Compact convertible writing instrument with interchangeable multi-functional components

Abstract

A convertible writing instrument can be put into either a compact capped configuration, 3 to 4 inches in length, or an extended writing configuration, 5 to 6 inches in length. A relatively elongated cap, which covers most of the relatively shortened pen member in the compact configuration, can be re-attached to the back of the pen, so as to lengthen the instrument in preparation for writing. Multiple interchangeable caps and rear modules can be coupled to the pen member to provide a variety of appearances and functions.

Claims

1. A writing apparatus, comprising: a pen member, comprising a proximal end and a distal end, and further comprising, between the proximal end and the distal end, a tubular or tapered tubular pen barrel, containing a tubular ink reservoir axially disposed within the pen barrel, wherein the ink reservoir fluidly communicates with a conical writing tip at the proximal end of the pen member, and further comprising a first coupling means and a second coupling means proximate to the distal end of the pen member; wherein the pen member further comprises a longer forward stem, having a forward stem length and extending from the proximal end to the first coupling means, and a shorter rear stem, having a rear stem length and extending from the distal end to the second coupling means; multiple interchangeable cap members, each cap member comprising an open proximal end and closed distal end, and further comprising, between the proximal end and the distal end, a tubular or tapered tubular cap body, wherein the cap body has a length that is approximately equal to the forward stem length; wherein the proximal end of each cap member contains a third coupling means, which is configured to removably and conjugately attach alternately to either the first coupling means or the second coupling means of the pen member; wherein each cap member is configured to receive axially within the cap body the entire forward stem of the pen member when the third coupling means is attached to the first coupling means, so that the writing apparatus is put into a compact capped configuration adapted to storage and/or transport; and wherein each cap member is configured to receive axially within the cap body the entire rear stem of the pen member when the third coupling means is attached to the second coupling means, so that the writing apparatus is put into an extended writing configuration adapted to manual manipulation for writing purposes.

2. The writing apparatus of claim 1, wherein each of the interchangeable cap members incorporates one or more indicia, materials, textures, colors, and/or graphic designs, whereby the writing apparatus is adaptable to various uses, events, occasions, enterprises, entities and/or organizations that are identified with specific indicia, materials, colors, textures and/or graphic designs.

3. The writing apparatus of either of claim 1 or 2, wherein each of the interchangeable cap members incorporates one or more cap attachment means, whereby the writing apparatus is adaptable to being secured to one or more external objects or structures for purposes of storage and/or transport.

4. The writing apparatus of either of claim 1 or 2, wherein each of the interchangeable cap members incorporates one or more non-attachment functional elements means, which are operable to perform various non-writing tasks.

5. The writing apparatus of claim 3, wherein each of the interchangeable cap members incorporates one or more non-attachment functional elements means, which are operable to perform various non-writing tasks.

6. The writing apparatus of either of claim 1 or 2, wherein the writing apparatus further comprises multiple interchangeable rear modules, which are removably and conjugately attachable to the second coupling means, when the writing apparatus is in the compact capped configuration, and wherein each of the interchangeable rear modules incorporates one or more rear module attachment means and/or one or more non-attachment functional elements means, which are operable to perform various non-writing tasks.

7. The writing apparatus of claim 3, wherein the writing apparatus further comprises multiple interchangeable rear modules, which are removably and conjugately attachable to the second coupling means, when the writing apparatus is in the compact capped configuration, and wherein each of the interchangeable rear modules incorporates one or more rear module attachment means and/or one or more non-attachment functional elements means, which are operable to perform various non-writing tasks.

8. The writing apparatus of claim 4, wherein the writing apparatus further comprises multiple interchangeable rear modules, which are removably and conjugately attachable to the second coupling means, when the writing apparatus is in the compact capped configuration, and wherein each of the interchangeable rear modules incorporates one or more rear module attachment means and/or one or more non-attachment functional elements means, which are operable to perform various non-writing tasks.

9. The writing apparatus of claim 5, wherein the writing apparatus further comprises multiple interchangeable rear modules, which are removably and conjugately attachable to the second coupling means, when the writing apparatus is in the compact capped configuration, and wherein each of the interchangeable rear modules incorporates one or more rear module attachment means and/or one or more non-attachment functional elements means, which are operable to perform various non-writing tasks.

10. A writing apparatus, comprising: a pen member, comprising a proximal end and a distal end, and further comprising, between the proximal end and the distal end, a tubular or tapered tubular pen barrel, containing a tubular ink reservoir axially disposed within the pen barrel, wherein the ink reservoir fluidly communicates with a conical writing tip at the proximal end of the pen member, and further comprising a first coupling means and a second coupling means proximate to the distal end of the pen member; wherein the pen member further comprises a longer forward stem, having a forward stem length and extending from the proximal end to the first coupling means, and a shorter rear stem, having a rear stem length and extending from the distal end to the second coupling means; one or more cap members, each cap member comprising an open proximal end and closed distal end, and further comprising, between the proximal end and the distal end, a tubular or tapered tubular cap body, wherein the cap body has a length that is approximately equal to the forward stem length; wherein the proximal end of each cap member contains a third coupling means, which is configured to removably and conjugately attach alternately to either the first coupling means or the second coupling means of the pen member; wherein each cap member is configured to receive axially within the cap body the entire forward stem of the pen member when the third coupling means is attached to the first coupling means, so that the writing apparatus is put into a compact capped configuration adapted to storage and/or transport; wherein each cap member is configured to receive axially within the cap body the entire rear stem of the pen member when the third coupling means is attached to the second coupling means, so that the writing apparatus is put into an extended writing configuration adapted to manual manipulation for writing purposes; and wherein the first coupling means comprises an annular first groove, having a proximal side and a distal side and containing a first O-ring, having an O-ring diameter, wherein the first groove has an axial first groove width, and wherein an annular first distal shoulder, which tapers toward the first groove, is located adjacent to the distal side of the first groove and has an axial width less than the axial first groove width, and wherein an annular first proximal shoulder, which tapers away from the first groove, is located adjacent to the proximal side of the first groove and has an axial width greater than the axial first groove width.

11. The writing apparatus of claim 10, wherein the second coupling means comprises an annular second groove, having a proximal side and a distal side and containing a second O-ring, having the O-ring diameter, wherein the second groove has an axial second groove width, and wherein an annular second proximal shoulder, which tapers toward the second groove, is located adjacent to the proximal side of the second groove and has an axial width less than the axial second groove width, and wherein an annular second distal shoulder, which tapers away from the second groove, is located adjacent to the distal side of the second groove and has an axial width greater than the axial second groove width.

12. The writing apparatus of claim 11, further comprising an annular stop ring, which has a ring diameter, a proximal side and a distal side, wherein the first distal shoulder is located adjacent to the proximal side of the stop ring and has a diameter less than the ring diameter, and wherein the second proximal shoulder is located adjacent to the distal side of the stop ring and has a diameter less than the ring diameter.

13. The writing apparatus of claim 12, wherein the third coupling means comprises an O-ring detent, which has a proximal side and a distal side and is sized and configured to snuggly accept alternately either the first O-ring or the second O-ring, wherein a shorter shoulder ramp is located adjacent to the proximal side of the O-ring detent and is sized and configured to snuggly interface alternately with either the first distal shoulder of the first coupling means or the second proximal shoulder of the second coupling means, and wherein a longer shoulder ramp is located adjacent to the distal side of the O-ring detent and is sized and configured to snuggly interface alternately with either the first proximal shoulder of the first coupling means or the second distal shoulder of the second coupling means.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1A is a profile view of one embodiment of the writing instrument in the compact capped configuration;

(2) FIG. 1B is a magnified cross-section view of the writing instrument of FIG. 1A, taken along the line A-A;

(3) FIG. 2 is a perspective view of one embodiment of the writing instrument in the compact capped configuration, with a rear module containing a hole attachment means;

(4) FIG. 3A is a profile view of one embodiment of the writing instrument in the extended writing configuration;

(5) FIG. 3B is a cross-section view of the writing instrument of FIG. 3A, taken along the line F-F;

(6) FIG. 4 is a perspective view of one embodiment of the writing instrument in the extended writing configuration;

(7) FIG. 5 is a detail profile view of the first and second coupling means of the pen member;

(8) FIG. 6 is a detail profile view of the third coupling means of the cap member(s);

(9) FIGS. 7A-7F are perspective views of six exemplary interchangeable cap members incorporating alternative cap attachment means;

(10) FIGS. 8A-8E are perspective views of five exemplary interchangeable cap members incorporating alternative non-attachment functional elements;

(11) FIGS. 9A-9E are perspective views of five exemplary interchangeable rear modules incorporating alternative non-attachment functional elements; and

(12) FIGS. 10A-10F are perspective views of six exemplary interchangeable rear modules incorporating alternative rear module attachment means.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(13) FIGS. 1A and 1B depict an exemplary writing instrument in its compact capped configuration 10. The pen member 11 comprises a tapered tubular pen barrel 12, having within its hollow interior a replaceable ink cartridge 13 with a conical writing tip 14 and a tubular ink reservoir 15. Near its distal end, the instrument has dual O-ring couplers, comprising a first O-ring coupler 16, nearer the proximal end of the pen member 11, and a second O-ring coupler 17, nearer the distal end of the pen member 11.

(14) One of multiple interchangeable cap members 18 is shown conjugately connected, by means of a detent 19 near its open end, to the first O-ring coupler 16. The cap member 18 has a clip attachment 20 near its closed end. The overall length of the exemplary writing instrument in its compact capped configuration 10 will typically range from 3 to 4 inches. Referring to FIG. 2, the compact capped configuration 10 is shown with one of multiple rear modules 21 connected, by means of a conjugate detent, to the second O-ring coupler 17. The exemplary rear module 21 contains a hole 22 to accommodate attachment of the compact capped writing instrument 10 to a key ring or lanyard (not shown).

(15) FIGS. 3A and 3B depict an exemplary writing instrument in its extended writing configuration 23. One of the interchangeable cap members 18 is shown conjugately connected, by means of its detent 19, to the second O-ring coupler 17. The overall length of the exemplary writing instrument in its extended writing configuration 23 will typically range from 5 to 6 inches. FIG. 4 presents a perspective view of the writing instrument in its extended writing configuration 23.

(16) Referring to FIG. 5, an exemplary embodiment of the first and second O-ring couplers 16 17 is illustrated (for greater clarity, the O-rings themselves are not shown). Each O-ring coupler 16 17 comprises an O-ring groove 24 adjoined on either side by a shorter shoulder 25 and a longer shoulder 26. Midway between the two shorter shoulders 25 is a central stop ring 27, which separates the two couplers 16 17, so that the cap members 18 can dock with only one coupler at a time.

(17) Referring to FIG. 6, an exemplary conjugate detent coupler 19 of one of the cap members 18 is shown. The O-ring detent 19 is adjoined on the proximal side by a shorter shoulder ramp 28, which is sized and configured to snuggly interface alternately with either of the shorter shoulders 25 of the first or second O-ring couplers 16 17. The O-ring detent 19 is adjoined on the distal side by a longer shoulder ramp 29, which is sized and configured to snuggly interface alternately with either of the longer shoulders 26 of the first or second O-ring couplers 16 17.

(18) FIGS. 7A-7F depict six exemplary interchangeable cap members 18 incorporating alternative cap attachment means 30, consisting of a clip 31 (FIG. 7A), a hole 32 (FIG. 7B), a hook 33 (FIG. 7C), a magnet 34 (FIG. 7D), a suction cup 35 (FIG. 7E), and a hook-and-loop fastener 36 (FIG. 7F). The cap attachment means 30 allow the writing instrument 10 to be secured to external objects or structures for purposes of storage and/or transport.

(19) FIGS. 8A-8E depict five exemplary interchangeable cap members 18 incorporating alternative non-attachment functional elements 37, consisting of a stylus 38 (FIG. 8A), a flash-drive 39 (FIG. 8B), a flashlight 40 (FIG. 8C), a laser pointer 41 (FIG. 8D), and an eraser 42 (FIG. 8E), which enable the instrument 10 to perform non-writing tasks.

(20) FIGS. 9A-9E depict five exemplary interchangeable rear modules 21 incorporating alternative functional elements 37, consisting of a stylus 38 (FIG. 9A), a flash-drive 39 (FIG. 9B), a flashlight 40 (FIG. 9C), a laser pointer 41 (FIG. 9D), and an eraser 42 (FIG. 9E), which enable the instrument 10 to perform non-writing tasks.

(21) FIGS. 10A-10F depict six exemplary interchangeable rear modules 21 incorporating alternative rear module attachment means 43, consisting of a clip 31 (FIG. 10A), a hole 32 (FIG. 10B), a hook 33 (FIG. 10C), a magnet 39 (FIG. 10D), a suction cup 35 (FIG. 10E), and a hook-and-loop fastener 36 (FIG. 10F). The rear module attachment means 43 allow the writing instrument 10 to be secured to external objects or structures for purposes of storage and/or transport.

(22) Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that many additions, modifications and substitutions are possible, without departing from the scope and spirit of the present invention as defined by the accompanying claims.