Shock absorbing swim goggles with independently movable lenses and method of use

Abstract

This invention pertains to an improved design for goggles featuring a base frame with two generally cylindrical eye portions connected by a vertical support post. Each eye portion has an oval cross-section and includes a proximal opening fitted with a flexible oval eyepiece made from neoprene or similar material. The goggles incorporate hinge barrels and pins allowing for pivotable attachment of lens housings, which include distal windows and frustoconical seals to ensure a watertight fit. A magnetic support spacer mechanism provides stability and ease of use, enhancing the user experience in high-impact and aquatic environments by facilitating quick drainage of intruding water without removing the goggles.

Claims

1. A pair of swim goggles comprising: a first rigid oval eye portion; a second rigid oval eye portion, connected to the first rigid oval eye portion by a support post; a hinge barrel positioned on the support post; a first hinge pin, pivotally positioned in the hinge barrel; a second hinge pin, pivotally positioned in the hinge barrel; a first lens housing, rigidly fixed to the first hinge pin; a second lens housing, rigidly fixed to the second hinge pin; a first multi-surface annular seal releasably sealed to a first exterior of the first rigid oval eye portion and permanently sealed to a first interior of the first lens housing; a second multi-surface annular seal releasably sealed to a second exterior of the second rigid oval eye portion and permanently sealed to a second interior of the second lens housing; a first transparent lens fixed in the first lens housing; a second transparent lens fixed in the second lens housing; a first resilient oval eye piece fixed to a second interior of the first rigid oval eye portion; a second resilient oval eye piece fixed to a third interior of the second rigid oval eye portion; and wherein the first lens housing, independently from the second lens housing, may be rotated from a closed configuration, adjacent the first rigid oval eye portion, to an open configuration, away from the first rigid oval eye portion; wherein the second lens housing, independently from the first lens housing, may be rotated from the closed configuration, adjacent the second rigid oval eye portion, to the open configuration, away from the second rigid oval eye portion.

2. The pair of swim goggles of claim 1, further comprising: a strap adjustably attached to the first rigid oval eye portion and the second rigid oval eye portion.

3. The pair of swim goggles of claim 1, wherein: the first lens housing further comprises a first support spacer, extending horizontally toward the second lens housing, generally parallel to the hinge barrel; the second lens housing further comprises a second support spacer, extending horizontally toward the first lens housing, generally parallel to the hinge barrel; and the first support spacer slidingly engaged with the second support spacer.

4. The pair of swim goggles of claim 3, wherein: the first support spacer further comprises a first magnet; the second support spacer further comprises second magnet; and the first magnet is adjacent to and magnetically attracted to the second magnet, in the closed configuration.

5. The pair of swim goggles of claim 1, wherein: the first rigid oval eye portion further comprises a first clasp member and the first lens housing further comprises a second clasp member; the first clasp member mechanically engages the second clasp member in the closed configuration; the second rigid oval eye portion further comprises a third clasp member and the second lens housing further comprises a fourth clasp member; and the third clasp member mechanically engages the fourth clasp member in the closed configuration.

6. The pair of swim goggles of claim 1, wherein: the first multi-surface annular seal and the second multi-surface annular seal are made of a resilient rubber material; the first transparent lens is sealed to the first multi-surface annular seal and may move with respect to the first lens housing; and the second transparent lens is sealed to the second multi-surface annular seal and may move with respect to the second lens housing.

7. The pair of swim goggles of claim 1, wherein: the first rigid oval eye portion further comprises a first proximal end and a first distal end; the first resilient oval eye piece extends through the first proximal end and is bonded to the first rigid oval eye portion adjacent the first distal end; the second rigid oval eye portion further comprises a second proximal end and a second distal end; and the second resilient oval eye piece extends through the second proximal end and is bonded to the second rigid oval eye portion adjacent the second distal end.

8. The pair of swim goggles of claim 7, wherein: the first distal end further comprises a first arcuate rear surface; the second distal end further comprises a second arcuate rear surface; the first resilient oval eye piece further comprises a first frustoconical seal flange; the second resilient oval eye piece further comprises a second frustoconical seal flange; the first frustoconical seal flange is adjacent to an entirety of the first arcuate rear surface; and the second frustoconical seal flange is adjacent to an entirety of the second arcuate rear surface.

9. The pair of swim goggles of claim 8, wherein: the first frustoconical seal flange extends past the first arcuate rear surface by between about 2 mm and about 10 mm; and the second frustoconical seal flange extends past the second arcuate rear surface by between about 2 mm and about 10 mm.

10. The pair of swim goggles of claim 1, wherein: the first multi-surface annular seal further comprises a first lens support surface adjacent the first transparent lens; a first taper surface adjacent the first lens support surface; a first rear abutment surface, adjacent to the first taper surface, and removably sealed against the first rigid oval eye portion in the closed configuration; a first releasable seal surface, adjacent to the first rear abutment surface, and removably sealed against the first rigid oval eye portion in the closed configuration; a first converging top surface adjacent the first releasable seal surface; a first converging bottom surface adjacent the first converging top surface; a second fixed seal surface, adjacent a second converging bottom surface, and permanently bonded to the first lens housing; the second multi-surface annular seal further comprises a second lens support surface adjacent the second transparent lens; a second taper surface adjacent the second lens support surface; a second rear abutment surface, adjacent to the second taper surface, and removably sealed against the second rigid oval eye portion in the closed configuration; a second releasable seal surface, adjacent to the second rear abutment surface, and removably sealed against the second rigid oval eye portion in the closed configuration; a second converging top surface adjacent the second releasable seal surface; the second converging bottom surface adjacent the second converging top surface; and the second fixed seal surface, adjacent the second converging bottom surface, and permanently bonded to the second lens housing.

11. A method of use of a pair of swim goggles comprising: providing a first rigid oval eye portion; providing a second rigid oval eye portion, connected to the first rigid oval eye portion by a support post; providing a hinge barrel positioned on the support post; providing a first hinge pin, pivotally positioned in the hinge barrel; providing a second hinge pin, pivotally positioned in the hinge barrel; providing a first lens housing, rigidly fixed to the first hinge pin; providing a second lens housing, rigidly fixed to the second hinge pin; providing a first multi-surface annular seal releasably sealed to a first exterior of the first rigid oval eye portion and permanently sealed to a first interior of the first lens housing; providing a second multi-surface annular seal releasably sealed to a second exterior of the second rigid oval eye portion and permanently sealed to a second interior of the second lens housing; providing a first transparent lens fixed in the first lens housing; providing a second transparent lens fixed in the second lens housing; providing a first resilient oval eye piece fixed to a second interior of the first rigid oval eye portion; providing a second resilient oval eye piece fixed to a third interior of the second rigid oval eye portion; rotating the first lens housing from a closed configuration, adjacent the first rigid oval eye portion, to an open configuration, away from the first rigid oval eye portion; and rotating the second lens housing from the closed configuration, adjacent the second rigid oval eye portion, to the open configuration, away from the second rigid oval eye portion.

12. The method of claim 11, further comprising: providing a strap adjustably attached to the first rigid oval eye portion and the second rigid oval eye portion.

13. The method of claim 11, further comprising: providing the first lens housing with a first support spacer, extending horizontally toward the second lens housing, generally parallel to the hinge barrel; providing the second lens housing with a second support spacer, extending horizontally toward the first lens housing, generally parallel to the hinge barrel; and slidingly engaging the first support spacer with the second support spacer.

14. The method of claim 13, further comprising: providing the first support spacer with a first magnet; providing the second support spacer with second magnet; and whereby the first magnet is adjacent to and magnetically attracted to the second magnet, in the closed configuration.

15. The method of claim 11, further comprising: providing the first rigid oval eye portion with a first clasp member; providing the first lens housing with a second clasp member; mechanically engaging the first clasp member with the second clasp member in the closed configuration; providing the second rigid oval eye portion with a third clasp member; providing the second lens housing with a fourth clasp member; and mechanically engaging the third clasp member with the fourth clasp member in the closed configuration.

16. The method of claim 11, further comprising: providing the first multi-surface annular seal and the second multi-surface annular seal made of a resilient rubber material; sealing the first transparent lens with the first multi-surface annular seal; moving the first transparent lens with respect to the first lens housing; sealing the second transparent lens to the second multi-surface annular seal; and moving the second transparent lens with respect to the second lens housing.

17. The method of claim 11, further comprising: providing the first rigid oval eye portion with a first proximal end and a first distal end; wherein the first resilient oval eye piece extends through the first proximal end and is bonded to the first rigid oval eye portion adjacent the first distal end; and providing the second rigid oval eye portion further comprises a second proximal end and a second distal end; wherein the second resilient oval eye piece extends through the second proximal end and is bonded to the second rigid oval eye portion adjacent the second distal end.

18. The method of claim 17, further comprising: providing the first distal end with a first arcuate rear surface; providing the second distal end with a second arcuate rear surface; providing the first resilient oval eye piece with a first frustoconical seal flange; providing the second resilient oval eye piece with a second frustoconical seal flange; and wherein the first frustoconical seal flange is adjacent to an entirety of the first arcuate rear surface; wherein the second frustoconical seal flange is adjacent to an entirety of the second arcuate rear surface.

19. The method of claim 18, wherein: the step of providing the first frustoconical seal flange further comprises extending the first frustoconical seal flange past the first arcuate rear surface by between about 2 mm and about 10 mm; and the step of providing the second frustoconical seal flange further comprises extending the second frustoconical seal flange past the second arcuate rear surface by between about 2 mm and about 10 mm.

20. The method of claim 11, further comprising: providing the first multi-surface annular seal with a first lens support surface adjacent the first transparent lens; providing a first taper surface adjacent the first lens support surface; providing a first rear abutment surface, adjacent to the first taper surface, and removably sealed against the first rigid oval eye portion in the closed configuration; providing a first releasable seal surface, adjacent to the first rear abutment surface, and removably sealed against the first rigid oval eye portion in the closed configuration; providing a first converging top surface adjacent the first releasable seal surface; providing a first converging bottom surface adjacent the first converging top surface; providing a second fixed seal surface, adjacent a second converging bottom surface, and permanently bonded to the first lens housing; providing the second multi-surface annular seal with a second lens support surface adjacent the second transparent lens; providing a second taper surface adjacent the second lens support surface; providing a second rear abutment surface, adjacent to the second taper surface, and removably sealed against the second rigid oval eye portion in the closed configuration; providing a second releasable seal surface, adjacent to the second rear abutment surface, and removably sealed against the second rigid oval eye portion in the closed configuration; providing a second converging top surface adjacent the second releasable seal surface; providing the second converging bottom surface adjacent the second converging top surface; and providing the second fixed seal surface, adjacent the second converging bottom surface, and permanently bonded to the second lens housing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the detailed description of the preferred embodiments presented below, reference is made to the accompanying drawings.

(2) FIG. 1 is an isometric view of a preferred embodiment of the swim goggles.

(3) FIG. 2 is a front view of a preferred embodiment of the swim goggles.

(4) FIG. 3 is a rear view of a preferred embodiment of the swim goggles.

(5) FIG. 4 is a left side view of a preferred embodiment of the swim goggles.

(6) FIG. 5 is a right side view of a preferred embodiment of the swim goggles.

(7) FIG. 6 is a top view of a preferred embodiment of the swim goggles.

(8) FIG. 7 is a bottom view of a preferred embodiment of the swim goggles.

(9) FIG. 8 is an isometric view of a preferred embodiment of the swim goggles.

(10) FIG. 9 is an exploded view of a preferred embodiment of the swim goggles.

(11) FIG. 10A is a partial section view of a preferred embodiment of the swim goggles.

(12) FIG. 10B is a partial section view of a preferred embodiment of the swim goggles.

(13) FIG. 11 shows a preferred embodiment of the swim goggles in use.

(14) FIG. 12 is a flowchart of a preferred method of use of the swim goggles.

DETAILED DESCRIPTION OF THE INVENTION

(15) In the description that follows, like parts are marked throughout the specification and figures for the same numerals. The figures are not necessarily drawn to scale and may be shown in exaggerated or generalized form in the interest of clarity and conciseness. Unless otherwise noted, all tolerances and uses of the term about indicate plus or minus 20%.

(16) Referring then to FIGS. 1-9, a preferred embodiment of goggles 100 will be described.

(17) Goggles 100 include base frame 102. Base frame 102 comprises eye portion 104 and eye portion 106. Each eye portion is generally cylindrical about its central axis, having an oval cross-section. Eye portion 104 includes distal opening 104a and proximal opening 104b. Likewise, eye portion 106 includes distal opening 106a and proximal opening 106b. Base frame 102 is preferably a rigid plastic such as polypropylene or a suitable rigid acrylic resin.

(18) Proximal opening 104b assumes an arcuate shape. Likewise, proximal opening 106b assumes an arcuate shape. The arcuate proximal openings are complimentary mirror images of each other, and are designed to generally conform to the eye sockets of the wearer.

(19) As can best be seen in FIGS. 1 and 3, eye portion 104 is rigidly connected to eye portion 106 through vertical support post 108. Vertical support post 108 includes connection bridge 108a. Connection bridge 108a, in use, is positioned above the nose bridge of the user and may include an arcuate indention 108b designed to conform to the nose bridge of the user.

(20) As can best be seen in FIG. 9, oval eyepiece 130 is positioned within proximal opening 104b. Likewise, oval eyepiece 132 is positioned within proximal opening 106b. Oval eyepiece 130 and oval eyepiece 132 are formed of a flexible rubber material such as neoprene or latex, at a nominal thickness of between about 3 mm and about 5 mm.

(21) As can be seen best from FIGS. 3, 8 and 9, oval eyepiece 130 further comprises a generally cylindrical structure having an oval cross section. Likewise oval eyepiece 132 is generally cylindrical having an oval cross section. The oval cross sections are sized to fit within the eye portions. Oval eyepiece 130 is fixed within eye portion 104 at its distal end by a suitable industrial waterproof adhesive ring 130b. Likewise, oval eyepiece 132 is fixed with the eye portion 106 at its distal end by a suitable industrial adhesive ring 132b. Oval eyepiece 130 further comprises seal flange 130a. Similarly, oval eyepiece 132 includes seal flange 132a. Each seal flange includes an arcuate rear surface which generally follows the arcuate proximal surfaces of the eye portions. The seal flanges are preferably integrally formed with the oval eyepieces and are designed to include a reduced cross-sectional width so as to be flexible to form fit to the face of the user.

(22) As can best be seen in FIG. 6, oval eyepiece 130 extends out of and beyond proximal opening 104b by a distance a. Similarly oval eyepiece 132 extends outward from proximal opening 106b by a distance B. In a preferred embodiment, a and B are equal distances of between about 2 mm and about 10 mm. The flexible nature of the eyepieces allows them to be compressed easily when subjected to axial impact loading. Hence, the oval eyepieces act as shock absorbers to reduce the transmission of impact loading from the base frame to the face of the wearer. This is helpful in situations where the goggles are used in high-impact sports or long-distance swimming, where impact fatigue is a problem. The position of the adhesive rings is important because it allows each eyepiece to be compressed more than if the adhesive bonded a more significant amount of surface area to the eye portions, thereby permitting each eyepiece to dissipate significant impacts.

(23) Eye portion 104 further includes strap flange 104c. Eye portion 106 further includes strap flange 106c. Strap flange 104c includes vertical slots 104d. Strap flange 106c includes vertical slots 106d. In use, strap 190 is threaded through the slots on the strap flanges and is used to adjustably hold the goggles against the face of the wearer.

(24) Vertical support post 108 further comprises hinge barrel 110 and hinge barrel 112. The hinge barrels have colinear central axes. Each hinge barrel is preferably integrally formed with the vertical support post. However, in other embodiments the hinge barrels may be affixed to the vertical support post by a rigid adhesive or acrylic resin. In another embodiment, the hinge barrels may be formed as a single cylinder spanning the width of the support post.

(25) As can best be seen from FIG. 9, goggles 100 further comprise lens housing 140 and lens housing 142. Lens housing 140 is generally cylindrical and has an oval cross section. Lens housing 142 is also generally cylindrical and has an oval cross section. The interior surfaces of the oval cross-sections are adapted to match the exterior of oval cross sections of the eye portions, but allow sufficient clearance for a sealing gasket, as will be further described. The central axis of lens housing 140 is collinear with the central axis of eye portion 104. Likewise, the central axis of lens housing 142 is collinear with the central axis of eye portion 106. Each lens housing is formed of a rigid plastic material such as polyvinyl chloride, polycarbonate, or poly(methyl methacrylate).

(26) Hinge barrel 110 further includes receiver hole 110a. Likewise, hinge barrel 112 includes receiver hole 112a. Receiver hole 110a and receiver hole 112a have generally colinear central axes.

(27) Hinge pin 144 is a rigid cylindrical rod which is fixed to lens housing 140 or, may be integrally formed with lens housing 140. Similarly, hinge pin 146 is a rigid cylindrical rod which is fixed to or integrally formed with lens housing 142. Hinge pin 146 fits within receiver hole 110a. Hinge pin 146 fits within receiver hole 112a. Hinge pin 144 is maintained in receiver hole 110a through a friction fit with friction ring 144a. Likewise, hinge pin 146 is maintained in receiver hole 112a via friction fit with friction ring 146a. Hinge pin 144 further comprises stop ring 144b. Hinge pin 146 further comprises stop ring 146b. The stop rings limit the travel of the hinge pins into the receiver holes. The friction fit of each hinge pin allows it to rotate within the hinge barrel, about its axis, in order to raise and lower each lens housing away from its adjacent eye portion, as will be further described. An appropriate silicon grease can be positioned between the hinge pin and the hinge cylinder to allow free rotation.

(28) Lens housing 140 further comprises generally rectangular support spacer 149 fixed to its exterior surface and directed toward lens housing 142. Likewise, lens housing 142 includes a generally rectangular support spacer 150 rigidly fixed to its exterior surface and directed toward lens housing 140. In the closed configuration, the support spacers touch each other, so as to offer horizontal stability to the eyepieces, but may slide past each other so as not interfere with the individual rotation of the lens housings.

(29) Support spacer 149 further includes embedded magnet 149a. Support spacer 150 further includes embedded magnet 150a. The magnets are preferably encapsulated in the support spacers. Preferably, each of the magnets is comprised of a neodymium material. Each of the magnets is positioned with opposite poles facing each other so that an attractive force between them is generated when the lens housings are in the closed position, as will be further described.

(30) Frustoconical seal 145 is positioned within lens housing 140, adjacent distal opening 140a. Frustoconical seal 148 is positioned in eye portion 106, adjacent distal opening 142a. The frustoconical seals are preferably made from a pliable, waterproof, synthetic rubber or neoprene material. Each of the frustoconical seals is held in position its by a suitable watertight industrial adhesive. The frustoconical seals are sized to form an interference fit between each eye portion and its adjacent lens housing so as to prevent ingress of water into the goggles when the lens housings are in the closed position.

(31) As can also be seen in FIG. 10A, frustoconical seal 145 further comprises lens support surface 145a. Lens support surface 145a is generally planar and is bonded to distal window 151. In other preferred embodiments, distal window 151 may also be bonded to lens housing 140.

(32) Lens support surface 145a is directly adjacent to taper surface 145b. In a preferred embodiment, taper surface 145b is generally arcuate. In other embodiments, taper surface 145b may be frustoconical.

(33) Taper surface 145b terminates adjacent rear abutment surface 145c. Rear abutment surface 145c is generally parallel to lens support surface 145a and distal opening 104a. In the closed configuration, rear abutment surface 145c is pressed against distal opening 104a by the mechanical connection of protrusion 140e and indention 104e as well as the magnetic attraction between magnet 149a and magnet 150a.

(34) Rear abutment surface 145c is adjacent releasable seal surface 145d. Releasable seal surface 145d impinges on the exterior of eye portion 104 adjacent distal opening 104a and forms an annular seal with eye portion 104 in a closed configuration.

(35) Converging top surface 145e is adjacent releasable seal surface 145d. Likewise, converging bottom surface 145f is adjacent converging top surface 145e. In use, the converging top and converging bottom surface are sufficiently flexible to allow frustoconical seal 145 to give way as the lens housing is moved to and from the open and closed configurations, thereby facilitating a watertight seal between releasable seal surface 145d and eye portion 104.

(36) Fixed seal surface 145g is adjacent converging bottom surface 145f and lens support surface 145a. In a preferred embodiment, fixed seal surface 145g is permanently adhered to lens housing 140 by a suitable waterproof industrial adhesive.

(37) As can also be seen in FIG. 10B, frustoconical seal 148 further comprises lens support surface 148a. Lens support surface 148a is generally planar and is bonded to distal window 152. In other preferred embodiments, distal window 152 may also be bonded to lens housing 142.

(38) Lens support surface 148a is directly adjacent to taper surface 148b. In a preferred embodiment, taper surface 148b is generally arcuate. In other embodiments, taper surface 148b may be frustoconical.

(39) Taper surface 148b terminates adjacent rear abutment surface 148c. Rear abutment surface 148c is generally parallel to lens support surface 148a and distal opening 106a. In the closed configuration, rear abutment surface 148c is pressed against distal opening 104a by the mechanical connection of protrusion 142e and indention 106e as well as the magnetic attraction between magnet 149a and magnet 150a.

(40) Rear abutment surface 148c is adjacent releasable seal surface 148d. Releasable seal surface 148d impinges on the exterior of eye portion 106 adjacent distal opening 106a and forms an annular seal with eye portion 106 in a closed configuration.

(41) Converging top surface 148e is adjacent releasable seal surface 148d. Likewise, converging bottom surface 148f is adjacent converging top surface 148e. In use, the converging top and converging bottom surfaces are sufficiently flexible to allow frustoconical seal 148 to give way as the lens housing is moved to and from the open and closed configurations, thereby facilitating a watertight seal between releasable seal surface 148d and eye portion 106.

(42) Fixed seal surface 148g is adjacent converging bottom surface 148f and lens support surface 148a. In a preferred embodiment, fixed seal surface 148g is permanently adhered to lens housing 142 by a suitable waterproof industrial adhesive.

(43) As can also be seen in FIG. 9, distal window 151 is positioned in distal opening 140b adjacent frustoconical seal 145. Distal window 152 is positioned in proximal opening 142b adjacent to and sealed against frustoconical seal 148. Distal window 151 and distal window 152 are both a transparent acrylic plastic which is shatter resistant such as Lucite, Plexiglas, Acrylate or a polycarbonate material. In a preferred embodiment, the distal windows are fixed to their adjacent frustoconical seals with a suitable adhesive. Importantly, fixing the windows to the seals, and not the lens housings, allows the windows to move with respect to the housings by compressing the seals, which allows the seals to absorb impact forces imposed on the windows from water or other causes, thereby reducing the impact transmitted to the face of the wearer.

(44) As can best be seen in FIG. 11, lens housing 140 further comprises clasp flange 140d. Clasp flange 140d is preferably integrally formed with lens housing 140. Clasp flange 140d includes protrusion 140e on its underside. Clasp flange 140d further comprises of outwardly facing tab 140f. Protrusion 140e is sized to fit within indention 104e. Lens housing 142 includes clasp flange 142d. Clasp flange 142d is preferably integrally formed with lens housing 142. Clasp flange 142d includes outwardly facing tab 142f. On its underside, clasp flange 142d includes protrusion 142e. Clasp flange 140d includes protrusion 140e. Protrusion 142e is sized to fit within indention 106e. In the closed configuration, each of the protrusions fits into a receiving indention in order to hold the lens housings in the closed position through an interference fit. In order to release each lens housing to move to the open position, each tab is rotated upward, which bends each clasp flange slightly, thereby removing its protrusion from the corresponding indention to releasing the lens housing.

(45) Referring then to FIG. 12, method of use 1200 of a preferred embodiment of the goggles will be further described.

(46) At step 1202, the method begins with both lens housings in the closed configuration.

(47) At step 1204, the goggles are positioned on the wearer by placing the eyepieces over the eyes and adjusting the head strap behind the head of the wearer.

(48) At step 1206, the wearer and the goggles are submerged for a length of time sufficient to allow water to intrude into the goggles within one or another of the eyepieces and lens housings.

(49) At step 1208, the wearer and the goggles surface above water.

(50) At step 1210, one or both of the tabs on either lens housings is grasped. It should be understood that the method applies equally to either or both of the lens housings, which may be opened and closed independently with respect to the other lens housing.

(51) At step 1212, the adjacent clasp flange is deformed downward.

(52) At step 1214, the protrusion is released from the indention.

(53) At step 1216, the lens housing is unsealed from the eye portion. This results in moving the frustoconical seal away from the eye portion.

(54) Referring also to FIG. 11, at step 1218, the lens housing is rotated away from the eye portion by pivoting the hinge pin in the hinge barrel and disassociating the magnets in the support spacers, thereby allowing rotation of the lens housing upward, in direction A, to the open configuration.

(55) At step 1220, water is drained from the inside of the lens housing while the lens housing is in its open configuration.

(56) At step 1222, to reposition the lens housing in the closed configuration, the lens housing is rotated downward toward the eye portion, in direction B.

(57) At step 1224, the clasp flange is bent to allow the lens housing to be positioned on the eyepiece.

(58) At step 1226, the protrusion is lodged into the indention.

(59) At step 1228, the frustoconical seal is sealed to the exterior of the eye portion, thereby placing the lens housing in the closed configuration.

(60) At step 1230, the method concludes.