US3801206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball point pen structure
Assignee: Individual
•
Filing: 1973-03-15
•
Granted: 1974-04-02
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Expires: 1993-03-15
Abstract
Abstract A ball point pen body includes a pair of oppositely disposed ink cartridges. An aperture is formed at each end of the body and segments of the body are forced together to simultaneously project a ball point end of each cartridge through one of the apertures. The base end of each ink cartridge is fixed to a separate body segment by engagement with a self seating split ring retainer. Relative movement of the body segments toward or away from each other is guided by a track formed in a telescoping sleeve which frictionally holds the body segments in their selected relative positions with the ball points either projecting from the apertures for writing or retracted into the body.
Inventors
- 👤 N Poritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:17
CPC Classifications
B; B43; B43K; B43K27/00; B43K27/08; B43K27/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
199 words
A writing implement comprising a body, the body including a first segment and a second segment, means forming an aperture at the end of the second segment, a writing cartridge, the cartridge having a writing tip, the cartridge being positioned within the body with the writing tip in registry with the aperture, means fixing the position of the cartridge relative to the first segment, the first segment being movable with respect to the second segment from a first position wherein the writing tip is contained within the second segment to a second position wherein the writing tip extends from the aperture, means for guiding the first segment with respect to the second segment between said positions and fixing the first segment with respect to the second segment at a selected position against separating forces transmitted through the cartridge during writing, said guiding and fixing means comprising a sleeve telescoping from one of the segments into the other segment, the sleeve being biased radially outward to a diameter greater than that of the other segment to thereby frictionally retain the segments at a selected position whereby a writing tip may be easily extended to or retracted from a writing position.
Claim 2
Dependent Claim
199 words
A writing implement comprising a body, the body including a first segment and a second segment, means forming an aperture at the end of the second segment, a writing cartridge, the cartridge having a writing tip, the cartridge being positioned within the body with the writing tip in registry with the aperture, means fixing the position of the cartridge relative to the first segment, the first segment being movable with respect to the second segment from a first position wherein the writing tip is contained within the second segment to a second position wherein the writing tip extends from the aperture, means for guiding the first segment with respect to the second segment between said positions and fixing the first segment with respect to the second segment at a selected position against separating forces transmitted through the cartridge during writing, said guiding and fixing means comprising a sleeve telescoping from one of the segments into the other segment, the sleeve being biased radially outward to a diameter greater than that of the other segment to thereby frictionally retain the segments at a selected position whereby a writing tip may be easily extended to or retracted from a writing position.
Claim 3
Dependent Claim
25 words
A writing implement constructed in accordance with claim 1 wherein the sleeve includes means forming a slot to facilitate the frictional engagement between the segments.
Claim 4
Dependent Claim
25 words
A writing implement constructed in accordance with claim 1 wherein the first segment comprises a pen cap and the second segment comprises a pen barrel.
Claim 5
Dependent Claim
53 words
A writing implement constructed in accordance with claim 1 wherein the means fixing the position of the cartridge relative to the first segment comprises a retainer, frictional means securing the retainer at a selected position in the first segment, the retainer further including post means, the cartridge being secured over the post means.
Claim 6
Dependent Claim
22 words
A writing implement constructed in accordance with claim 4 wherein the post means includes a plurality of flukes extending into the cartridge.
Claim 7
Dependent Claim
42 words
A writing implement constructed in accordance with claim 4 wherein the retainer includes a split ring, the ring being biased radially outward to a diameter greater than that of the first segment at the selected position to thereby removably secure the retainer.
Claim 8
Dependent Claim
80 words
A writing implement constructed in accordance with claim 1 further including means forming an aperture at the end of the first segment, a second writing cartridge, the second cartridge having a writing tip, the second cartridge being positioned within the body with its tip in registry with the aperture in the first segment, means fixing the position of the second cartridge relative to the second segment, whereby two writing tips may be simultaneously extended to or retracted from writing positions.
Claim 9
Dependent Claim
38 words
A writing implement constructed in accordance with claim 7 wherein the means fixing the positions of the cartridges relative to the respective segments includes a pair of retainers, frictional means securing each retainer in one of the segments.
Claim 10
Dependent Claim
41 words
A writing implement constructed in accordance with claim 1 further including means forming a track in the sleeve, means forming a protuberance in the other segment, the protuberance extending into the track whereby relative movement of the two segments is guided.
Claim 11
Dependent Claim
38 words
A writing implement constructed in accordance with claim 9 wherein the track includes an operating zone, the protuberance being engaged in the operating zone when the first segment is in both its first position and its second position.
Claim 12
Dependent Claim
43 words
A writing implement constructed in accordance with claim 9 wherein the operating zone of the track includes means frictionally engaging the protuberance when the first segment is in its second position whereby an additional restraint against inadvertent movement of the segments is provided.
Claim 13
Dependent Claim
54 words
A writing implement constructed in accordance with claim 4 wherein the post means includes an arcuately curved wall, the wall being biased radially outward to a diameter greater than the inner diameter of the cArtridge, the post extending into the cartridge with the wall being inwardly flexed, whereby the post tightly engages the cartridge.
References Cited (Backward Citations)
US3158138A
Cited
US3288116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |