US3792931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing instrument
Assignee: PENN CORP
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Filing: 1972-02-11
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Granted: 1974-02-19
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Expires: 1992-02-11
Abstract
Abstract A retractable writing implement includes relatively rotatable upper and lower barrel sections and a writing element advancing mechanism including a first tubular member fixed in the upper barrel section and having an inclined bottom cam edge extending partially around the tubular member. A second tubular member includes an upper portion telescoping the first tubular member and having a pair of opposite vertical slots and a pair of top shoulder elements engaging a peripheral shoulder on the first tubular member inside face and a lower portion of greater diameter than the top portion and with a top peripheral shoulder abutting the first tubular member bottom face. A chuck engaging a spring retracted writing element has one follower engaging one of the slots and the cam and another follower engaging the other slot.
Inventors
- 👤 W Ganz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:14
CPC Classifications
B; B43; B43K; B43K24/00; B43K24/02; B43K24/06; B63; B63C; B63C9/00; B63C9/02; B63C9/04; B63C2009/042; B63C2009/044
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
151 words
A retractable writing implement comprising a barrel member including relatively rotatable upper and lower coaxial sections, a writing element disposed in said barrel member and longitudinally movable between a retracted position and an advanced position projecting through the bottom of said barrel member, a spring engaging said writing element and urging it toward a retracted position, and a writing element advancing mechanism including a pair of relatively rotatable telescoping first and second tubular members respectively rotatable with said upper and lower barrel sections, said first tubular member having an inclined cam defining peripheral edge and said second tubular member having a longitudinally extending slot, and a chuck longitudinally slidably disposed in said tubular members and engaging said writing element and urged thereby toward a retracted position and having a follower element slidably engaging said slot and said cam, said first and second tubular members having a length greater than said chuck.
Claim 2
Dependent Claim
151 words
A retractable writing implement comprising a barrel member including relatively rotatable upper and lower coaxial sections, a writing element disposed in said barrel member and longitudinally movable between a retracted position and an advanced position projecting through the bottom of said barrel member, a spring engaging said writing element and urging it toward a retracted position, and a writing element advancing mechanism including a pair of relatively rotatable telescoping first and second tubular members respectively rotatable with said upper and lower barrel sections, said first tubular member having an inclined cam defining peripheral edge and said second tubular member having a longitudinally extending slot, and a chuck longitudinally slidably disposed in said tubular members and engaging said writing element and urged thereby toward a retracted position and having a follower element slidably engaging said slot and said cam, said first and second tubular members having a length greater than said chuck.
Claim 3
Dependent Claim
64 words
The writing implement of claim 1 wherein said slot is vertical and said second tubular member has a second slot formed therein parallel to and diametrically opposite said first slot, said chuck having a second follower disposed thereon slidably engaging said second slot and terminating at a point short of the inner face of said first tubular member, said cam edge being downwardly directed.
Claim 4
Dependent Claim
16 words
The writing implement of claim 2 wherein said first follower is longer than said second follower.
Claim 5
Dependent Claim
41 words
The writing implement of claim 1 including a sleeve member having an upper portion engaging the lower inside face of said second tubular member and a lower portion of enlarged outside diameter engaging the inside face of said lower barrel section.
Claim 6
Dependent Claim
31 words
The writing implement of claim 1 wherein said cam edge is positioned above the bottom-most edge of said first tubular member and has a recess formed therein proximate its lower end.
Claim 7
Dependent Claim
21 words
The writing implement of claim 5 wherein said depending stop defining shoulders are movable into alternative abutment with said follower element.
Claim 8
Dependent Claim
182 words
A retractable writing implement comprising a barrel member including relatively rotatable upper and lower coaxial sections, a writing element disposed in said barrel member and longitudinally movable between a retracted position and an advanced position, spring means urging said writing element to a retracted position, and a writing element advancing mechanism including a pair of relatively rotatable telescoping first and second tubular members, said first tubular member being rotatable with said barrel upper section and having an inclined peripheral edge defining a downwardly directed cam, said second tubular member being rotatable with said lower barrel section and having a longitudinally extending slot and including an upper portion disposed in said first tubular member and a lower portion disposed below and of greater outside diameter than said upper portion and delineated from said upper portion by a peripheral shoulder, a portion of the bottom edge of said first tubular member being horizontal and slidably engaging said shoulder, and a chuck slidably disposed in said tubular members and engaging said writing element and haVing a follower element slidably engaging said slot and said cam.
Claim 9
Dependent Claim
182 words
A retractable writing implement comprising a barrel member including relatively rotatable upper and lower coaxial sections, a writing element disposed in said barrel member and longitudinally movable between a retracted position and an advanced position, spring means urging said writing element to a retracted position, and a writing element advancing mechanism including a pair of relatively rotatable telescoping first and second tubular members, said first tubular member being rotatable with said barrel upper section and having an inclined peripheral edge defining a downwardly directed cam, said second tubular member being rotatable with said lower barrel section and having a longitudinally extending slot and including an upper portion disposed in said first tubular member and a lower portion disposed below and of greater outside diameter than said upper portion and delineated from said upper portion by a peripheral shoulder, a portion of the bottom edge of said first tubular member being horizontal and slidably engaging said shoulder, and a chuck slidably disposed in said tubular members and engaging said writing element and haVing a follower element slidably engaging said slot and said cam.
Claim 10
Dependent Claim
50 words
The writing implement of claim 7 wherein said first tubular member has an upwardly directed peripheral shoulder formed in the inner face thereof and said second tubular member has an outwardly directed downwardly facing shoulder proximate its upper edge slidably engaging said upwardly directed shoulder of said first tubular member.
Claim 11
Dependent Claim
22 words
The writing implement of claim 7 wherein said slot extends from said shoulder to the upper edge of said second tubular member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |