IMPALEMENT HAZARD PROTECTIVE CAP
20230057280 · 2023-02-23
Inventors
Cpc classification
E04C5/161
FIXED CONSTRUCTIONS
International classification
Abstract
A protective cap to cover impalement hazards, by means of increasing the surface area associated with said hazard may include utilizing a metal plate embedded within a plastic/polymer cap, with a flat top and a receiving shaft housing below, with mechanical means of securing the cap to said hazard with a mechanical plunger. The mechanical plunger is driven from the exterior of the housing by means of rotating a threaded shaft to selectively engage the impalement hazard and compressively hold the protective cap to the impalement hazard.
Claims
1. A protective cap for impalement hazards, the cap comprising housing having a first, impact surface portion and a second, body portion having a void therein for receiving an impact hazard and a plunger movable within the void.
2. The protective cap for impalement hazards of claim 1, wherein the first, impact surface portion has a penetration resistant insert disposed therein.
3. The protective cap for impalement hazards of claim 1, wherein the second, body portion has a sidewall containing an insert.
4. The protective cap for impalement hazards of claim 1 wherein the plunger has a concave surface.
5. The protective cap for impalement hazards of claim 4, wherein the concave surface is rounded.
6. The protective cap for impalement hazards of claim 4, wherein the concave surface forms a portion of a triangle.
7. The protective cap for impalement hazards of claim 4, wherein the concave surface is frustoconical.
8. The protective cap for impalement hazards of claim 4, wherein the plunger has a plurality of flat surfaces adjacent the concave surface.
9. A protective cap for impalement hazards of claim 1, wherein a plurality of steps is formed within the second, body portion.
10. A protective cap for impalement hazards of claim 1, wherein the plurality of steps includes concave surfaces facing the plunger.
11. A protective cap for impalement hazards of claim 1 further comprising a bolt attached to the plunger such that rotation of the bolt moves the plunger within the second, body portion.
12. A protective cap for impalement hazards of claim 1, wherein the second, body portion includes a sidewall defining a generally rectangular area.
13. A protective cap for impalement hazards of claim 1, wherein the sidewall contains at least one channel extending outward from a generally rectangular area.
14. A protective cap for impalement hazards of claim 13, wherein a portion of the plunger is disposed in the at least one channel.
15. A protective cap for impalement hazards of claim 13, wherein the at least one channel is disposed opposite the plunger.
16. A protective cap for impalement hazards of claim 1, wherein the second, body portion is generally square in cross-section.
17. A protective cap for impalement hazards of claim 1, wherein the plunger is rotatably attached to the bolt which extends through a sidewall of the second, body portion such that rotation of the bolt moved the plunger toward or away from said sidewall without rotating the plunger.
18. A protective cap for impalement hazards of claim 17, further comprising a threaded insert disposed in the second, body portion and the bolt is disposed in the threaded insert.
19. A method for securing an impalement hazard, the method comprising: selecting an impalement hazard cap having a first, impact surface portion and a second, body portion defining a void; disposing an end of the impalement hazard within the void; and rotating a bolt to advance a plunger disposed in the void to engage the impalement hazard and push the impalement hazard into contact with an opposing side of the second, body portion to thereby compressively engage the impalement hazard between the plunger and the sidewall of the second, body portion.
20. The method of claim 19, wherein the method comprising rotating a bolt to advance the plunger within the housing.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Various embodiments of the present disclosure are shown and described in reference to the numbered drawings wherein:
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[0040] It will be appreciated that the drawings are illustrative and not limiting of the scope of the invention which is defined by the appended claims. The embodiments shown accomplish various aspects and objects of the invention. It will be appreciated that it is not possible to clearly show each element and aspect of the present disclosure in a single figure, and as such, multiple figures are presented to separately illustrate the various details of different aspects of the invention in greater clarity. Similarly, not all configurations or embodiments described herein or covered by the appended claims will include all the aspects of the present disclosure as discussed above.
DETAILED DESCRIPTION
[0041] Various aspects of the invention and accompanying drawings will now be discussed in reference to the numerals provided therein so as to enable one skilled in the art to practice the present invention. The skilled artisan will understand, however, that the apparatus and methods described below can be practiced without employing these specific details, or that they can be used for purposes other than those described herein. Indeed, they can be modified and can be used in conjunction with products and techniques known to those of skill in the art in light of the present disclosure. The drawings and the descriptions thereof are intended to be exemplary of various aspects of the invention and are not intended to narrow the scope of the appended claims. Furthermore, it will be appreciated that the drawings may show aspects of the invention in isolation and the elements in one figure may be used in conjunction with elements shown in other figures.
[0042] Reference in the specification to “one embodiment,” “one configuration,” “an embodiment,” or “a configuration” means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment, etc. The appearances of the phrase “in one embodiment” in various places may not necessarily limit the inclusion of a particular element of the invention to a single embodiment, rather the element may be included in other, or all embodiments discussed herein.
[0043] Furthermore, the described features, structures, or characteristics of embodiments of the present disclosure may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details may be provided, such as examples of products or manufacturing techniques that may be used, to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that embodiments discussed in the disclosure may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations may not be shown or described in detail to avoid obscuring aspects of the invention.
[0044] Before the present invention is disclosed and described in detail, it should be understood that the present invention is not limited to any particular structures, process steps, or materials discussed or disclosed herein, but is extended to include equivalents thereof as would be recognized by those of ordinarily skill in the relevant art. More specifically, the invention is defined by the terms set forth in the claims. It should also be understood that terminology contained herein is used for the purpose of describing particular aspects of the invention only and is not intended to limit the invention to the aspects or embodiments shown unless expressly indicated as such. Likewise, the discussion of any particular aspect of the invention is not to be understood as a requirement that such aspect is required to be present apart from an express inclusion of that aspect in the claims.
[0045] It should also be noted that, as used in this specification and the appended claims, singular forms such as “a,” “an,” and “the” may include the plural unless the context clearly dictates otherwise. Thus, for example, reference to “a bracket” may include an embodiment having one or more of such brackets, and reference to “the target plate” may include reference to one or more of such target plates.
[0046] As used herein, the term “substantially” refers to the complete or nearly complete extent or degree of an action, characteristic, property, state, structure, item, or result to function as indicated. For example, an object that is “substantially” enclosed would mean that the object is either completely enclosed or nearly completely enclosed. The exact allowable degree of deviation from absolute completeness may in some cases depend on the specific context, such that enclosing nearly all of the length of a lumen would be substantially enclosed, even if the distal end of the structure enclosing the lumen had a slit or channel formed along a portion thereof. The use of “substantially” is equally applicable when used in a negative connotation to refer to the complete or near complete lack of an action, characteristic, property, state, structure, item, or result. For example, structure which is “substantially free of” a bottom would either completely lack a bottom or so nearly completely lack a bottom that the effect would be effectively the same as if it completely lacked a bottom.
[0047] As used herein, the term “generally” refers to something that has characteristics of a quality without being exactly that quality. For example, a structure said to be generally vertical would be more vertical than horizontal, i.e., would extend greater than 45 degrees from horizontal. Likewise, something said to be generally circular may be rounded like an oval but need not have a consistent diameter in every direction.
[0048] As used herein, the term “about” is used to provide flexibility to a numerical range endpoint by providing that a given value may be “a little above” or “a little below” the endpoint while still accomplishing the function associated with the range.
[0049] As used herein, a plurality of items, structural elements, compositional elements, and/or materials may be presented in a common list for convenience. However, these lists should be construed as though each member of the list is individually identified as a separate and unique member.
[0050] Concentrations, amounts, proportions, and other numerical data may be expressed or presented herein in a range format. It is to be understood that such a range format is used merely for convenience and brevity and thus should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. As an illustration, a numerical range of “about 1 to about 5” should be interpreted to include not only the explicitly recited values of about 1 to about 5, but also include individual values and sub-ranges within the indicated range. Thus, included in this numerical range are individual values such as 2, 3, and 4 and sub-ranges such as from 1-3, from 2-4, and from 3-5, etc., as well as 1, 2, 3, 4, and 5, individually. This same principle applies to ranges reciting only one numerical value as a minimum or a maximum. Furthermore, such an interpretation should apply regardless of the breadth of the range, or the characteristics being described.
[0051] Turning now to
[0052] The first, impact surface portion 8 is preferably between 3 and 6 inches across. More preferably the first, impact surface portion is between 4 and 5 inches across, with a most common size being about 4.5 inches. Such a size dramatically increases the cross-sectional area which a body may engage and dramatically reduced the risk of a person being impaled if they run into or fall onto the first, impact surface portion 8. While shown in most views as being an octagon shape, it will be appreciated that the first, impact surface can be other shapes as well, including generally square or rounded as shown in
[0053] The first, impact surface portion 8 will typically be approximately ⅛.sup.th to ½ inch thick. A more preferred range is between about ¼.sup.th inch and ⅜ths of an inch. It will be appreciated that a preferred thickness may depend on the specific materials being used to construction. For example, if a steel insert is being used, the first, impact surface may be thinner than if an insert such as aluminum or Teflon is being used as the insert. Additionally, the overhang on the flange 12 is preferably between about ½ of an inch and 1¼ of an inch, with about ⅞.sup.th of an inch beyond the widest part of the second, body portion 16 being presently preferred.
[0054] As shown in
[0055] A second metallic insert 22 forming a portion of at least one sidewall of the second, body portion 16 may be used to provide strength to the at least one side wall of the second, body portion. The second metallic insert 22 may be a single insert on one portion of the body portion, may be multiple inserts around the body portion, or may be a tubular structure so that a single insert is disposed along the entire sidewall of the second, body portion 16.
[0056] The second, body portion 16 may include a void 24 into which an end of an impalement hazard may be placed. As shown in
[0057] As shown in
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[0059] For example, one of the most common impalement hazards on a construction sight is rebar. In order to prevent impalement, a piece of rebar 50 may be disposed in the void 24. Advancing the plunger 26 enables the rebar to be captured between the face 26b of the plunger and the alcove 42 or the opposing wall of the second, body portion 16. The triangular recess or depression 26b in the face 26c of the plunger 26 and the channel 42 in the wall of the second, body portion 16 allows the rebar 50 to be engaged securely and the cap 4 retained on the rebar by rotating the bolt 30 and the plunger. The more compressive the engagement applied by the plunger, the better the rebar 50 is held so that the cap 4 does not come off, and even preventing the cap from rotating around the rebar.
[0060] The two triangular recesses formed by the plunger at 26b and the channel 42 in the second, body portion helps to center and hold rebar of various thicknesses, as well as impalement hazards which may be of a more squared in cross-section. The flat portions 44 along the wall and on the face 26c of the plunger help hold pieces having a longer, flatter cross-sectional area.
[0061] The face 26c of the plunger 26 also allows the same cap 4 to be used on an impalement hazard which is more rectangular, such as a stake for concrete forms which has a rectangular cross-section. This is advantageous, as a single impalement hazard protective cap 4 can be used for a wide variety of different impalement hazards—minimizing the inventory of caps which must be taken to a job sight.
[0062] In one representative example, the shape of the second, body portion 16 and the plunger 26 allows for the cap 4 to be utilized both on round shaped elements, up to approximately 1½″ in diameter, as well as rectangular objects, up to approximately 1¾″×⅝″ in thickness. These objects may include but are not limited to:
a. Reinforcing steel bars
b. Miscellaneous reinforcing steel associated with concrete work
c. Rigid conduit
d. Steel Flat formwork stakes/Rebar pins
e. Steel round formwork stakes
f. Wooden formwork stakes
g. Wooden stakes
h. Anchor bolts
i. Miscellaneous metal/steel edges that fit within the shaft housing
j. Concrete formwork rod ends
k. Fence pickets
l. All-thread ends
m. Rigid copper piping
n. Electrical grounding rods
o. Rolling scaffold corner supports
p. Uni-strut support ends
q. Steel fence u-post.
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[0065] Turning now to
[0066] One item shown in
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[0069] The steps 60 allow a wide variety of impalement hazards to be held by a single protective cap 4. For example, small pieces of rebar 50 can be held between the plunger 26 and the uppermost step (i.e., innermost sidewall) 60a. In contrast, a substantially wider structure, such as a form stake 64, can be held between the plunger 26 and the bottom step (i.e., outermost sidewall having the largest interior distance from the opposing sidewall) 60d.
[0070] The plunger 26 shown in
[0071] As shown in bottom view of
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[0073] It will be appreciated that it is preferred that the plunger be allowed to advance and retract without rotating with the rotations of the bolt. This can be accomplished in several ways. The bolt 30 may have a flange which fits into a void in the back of the plunger, or with a rivet 70 or other structure may extend into the bolt as to attach the bolt to the plunger while allowing them to rotate with respect to one another as shown in
[0074] Turning now to
[0075] The impalement hazard protective cap 4 may include a body 6 which includes the first, impact surface portion 8, which may include a flange 12, and a second body portion 16 which defines a void 24 into which an impalement hazard may be inserted. A plunger 26 may be disposed in the void 24 and a bolt 30 may have and end 30a which engages the plunger to move it forward or backward within the void depending on the rotation of bolt. The housing 16 may be threaded, or a threaded collar 30b may be provided so rotation of the bolt 30 moves the plunger 26 in the void 24 toward or away from the opposing wall 44 (
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[0078] It will be appreciated that the present disclosure discloses multiple embodiments and combinations, and which can be used to form an impalement hazard protective cap, which may include a protective cap for impalement hazards which includes a housing having a first, impact surface portion and a second, body portion having a void therein for receiving an impact hazard and a plunger movable within the void. The cap's the first, impact surface portion may have a penetration resistant insert disposed therein or may be made exclusively of a polymer or plastic material. The second body portion may have a sidewall containing an insert.
[0079] The plunger of the protective cap may have a concave surface. The concave surface may be rounded or may form a portion of a triangle. The concave surface may be frustoconical. The plunger may also have a plurality of flat surfaces adjacent the concave surface.
[0080] The protective cap may have a second, body portion with a plurality of steps formed within the second, body portion so that the void in the second, body portion has a void with areas having different cross-sectional areas. The steps may include concave surfaces facing the plunger which provide two or more areas within the void having different cross-sectional areas.
[0081] The protective cap may include a bolt attached to the plunger such that rotation of the bolt moves the plunger within the second, bod portion. The second, body portion may include a sidewall defining a generally rectangular area. The cap may include a sidewall contains at least one channel extending outward from a generally rectangular area and a portion of the plunger may be disposed in the at least one channel. The at least one channel may include a channel disposed opposite the plunger. The second, body portion may be generally square in cross-section. The plunger may be rotatably attached to the bolt which extends through a sidewall of the second, body portion such that rotation of the bolt moved the plunger toward or away from said sidewall without rotating the plunger. The cap may include a threaded insert or collar disposed in the second, body portion and the bolt is disposed in the threaded insert.
[0082] A method for securing an impalement hazard, may include selecting an impalement hazard cap having a first, impact surface portion and a second, body portion defining a void; disposing an end of the impalement hazard within the void; and rotating a bolt to advance a plunger disposed in the void to engage the impalement hazard and push the impalement hazard into contact with an opposing side of the second, body portion to thereby compressively engage the impalement hazard between the plunger and the sidewall of the second, body portion. The method may include rotating a bolt to advance the plunger within the housing.
[0083] Thus, there is disclosed an impalement hazard protective cap. It will be appreciated that multiple modifications can be made to the disclosed embodiments which would be obvious to one of ordinary skill in the art in light of the present disclosure and the appended claims are intended to cover such modifications.
[0084] This application hereby incorporates by references U.S. Provisional Patent Application No. 63236177 filed Aug. 23, 2021.