US3700340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicolor ball-point pen
Assignee: NIKKO PEN KK
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Filing: 1970-09-08
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Granted: 1972-10-24
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Expires: 1990-09-08
Abstract
Abstract The present invention relates to a ratchet-type multicolor ballpoint pen, the rotatable cylinder of which is rotated by vertical movement of an actuating stem and which cylinder is provided with an inclined surface, a vertical surface, and a notch between said surfaces, said notch and inclined surface being adapted to cooperate with the tops of a plurality of ink-reservoirs, and shift said reservoirs successively into the writing position in response to vertical movement of the actuating stem.
Inventors
- 👤 Shingan Terasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:13
CPC Classifications
B; B43; B43K; B43K24/00; B43K24/10; B43K24/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
226 words
A ratchet-type multicolor ball-point pen comprising: an elongated casing, a plurality of ink-reservoirs mounted in said casing for individual sliding movement longitudinally of said casing along substantially parallel lines between a retracted position and a writing position, first resilient means biassing each reservoir toward its retracted position, a unitary actuating member mounted for translational sliding movement longitudinally of said casing between a raised position in which one end thereof projects from said casing and a depressed position, second resilient means biassing said actuating member toward its raised position, and a rotor mounted in said casing between said actuating member and said reservoirs for rotation about an axis occupying a fixed position, the face of said rotor facing said actuating member being provided with ratchet teeth positioned to be engaged by said actuating member to rotate said rotor when said actuating member is depressed, and the face of said rotor facing said reservoirs being provided with a cam surface positioned to engage cooperating means carried by said reservoirs and shaped to successively advance a reservoir to its writing position as said rotor turns during depression of said actuating member, support said reservoir in said writing position when said actuating member is once depressed, and withdraw said support when said actuating member is next depressed, permitting said first resilient means to return said reservoir to its retracted position.
Claim 2
Dependent Claim
226 words
A ratchet-type multicolor ball-point pen comprising: an elongated casing, a plurality of ink-reservoirs mounted in said casing for individual sliding movement longitudinally of said casing along substantially parallel lines between a retracted position and a writing position, first resilient means biassing each reservoir toward its retracted position, a unitary actuating member mounted for translational sliding movement longitudinally of said casing between a raised position in which one end thereof projects from said casing and a depressed position, second resilient means biassing said actuating member toward its raised position, and a rotor mounted in said casing between said actuating member and said reservoirs for rotation about an axis occupying a fixed position, the face of said rotor facing said actuating member being provided with ratchet teeth positioned to be engaged by said actuating member to rotate said rotor when said actuating member is depressed, and the face of said rotor facing said reservoirs being provided with a cam surface positioned to engage cooperating means carried by said reservoirs and shaped to successively advance a reservoir to its writing position as said rotor turns during depression of said actuating member, support said reservoir in said writing position when said actuating member is once depressed, and withdraw said support when said actuating member is next depressed, permitting said first resilient means to return said reservoir to its retracted position.
Claim 3
Dependent Claim
56 words
A ball-point pen as claimed in claim 1 in which said cam surface is contoured to maintain one of said reservoirs in its advanced position while the other is retracted, when said rotor is in a first angular position, and to permit both reservoirs to be retracted when said rotor is in a second angular position.
Claim 4
Dependent Claim
169 words
A ball-point pen as claimed in claim 1 in which said cam surface comprises an inclined portion which engages said cooperating means as a reservoir is being advanced to its writing position and a notch at the end of said inclined portion having a sloping side adjacent said inclined portion, into which notch said cooperating means projects only part way when that reservoir is being supported in its writing position after said actuating member is depressed, said rotor being rotated by contact between said cooperating means and sloping notch side as said cooperating means moves further into said notch until it strikes the other side of said notch when said actuating member is released sufficiently to disengage said actuating member from said ratchet teeth, and the intersection between said sloping notch side and said inclined cam surface being so located relative to said ratchet teeth that the rotation of said rotor by said cooperating means brings a different ratchet tooth into alignment with the tooth-engaging portion of said stem.
Claim 5
Dependent Claim
32 words
A ball-point pen as claimed in claim 1 in which said stem is provided with a longitudinal rib, the lower end of which engages a ratchet tooth when said stem is depressed.
Claim 6
Dependent Claim
29 words
A ball-point pen as claimed in claim 1 in which the cooperatiNg means on each reservoir is a longitudinal, radially projecting rib carried by the cap of said reservoir.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |