Patent US3905709A successfully refreshed from Google Patents.
US3905709A
Expired / Lapsed
US
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Pen with injection system
Assignee: Individual
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Filing: 1974-02-05
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Granted: 1975-09-16
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Expires: 1994-02-05
Abstract
Abstract The present invention relates to a pen having a compressible free ink reservoir, a contained ink reservoir, a writing tip in communication with the contained ink reservoir, a manually operable injection system for transferring ink from the free ink reservoir to the contained ink reservoir which includes at least one ink injection channel extending downwardly from the lower end of the free ink reservoir to a position near the bottom of the contained ink reservoir, and a venting system extending upwardly from the lower end of the contained ink reservoir to the top thereof and beyond a cross venting channel which extends from an opening in the side wall of the contained ink reservoir.
Inventors
- 👤 Edward Bok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:07
CPC Classifications
B; B43; B43K; B43K8/00; B43K8/16; B43K8/18; B43K5/00; B43K5/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
A pen, comprising: a free ink reservoir, a contained ink reservoir beneath said free ink reservoir and provided with a pen tip in communication therewith, at least one ink injection channel positioned between said free ink reservoir and said contained ink reservoir, manually operable injection means for transferring ink from said free ink reservoir to said contained ink reservoir along said channel, and a venting system provided with venting passage means comprising a plurality of capillary ink buffer channels and a main venting channel of less capillarity than said ink buffer channels and in communication with a portion of said ink buffer channels, an opening within the wall of said contained ink reservoir and exposed to the atmosphere, and a cross venting channel connecting said opening to said venting passage means at a position intermediate the ends thereof such that a portion of said venting passage means extends upwardly beyond said cross venting channel.
Claim 2
Dependent Claim
154 words
A pen, comprising: a free ink reservoir, a contained ink reservoir beneath said free ink reservoir and provided with a pen tip in communication therewith, at least one ink injection channel positioned between said free ink reservoir and said contained ink reservoir, manually operable injection means for transferring ink from said free ink reservoir to said contained ink reservoir along said channel, and a venting system provided with venting passage means comprising a plurality of capillary ink buffer channels and a main venting channel of less capillarity than said ink buffer channels and in communication with a portion of said ink buffer channels, an opening within the wall of said contained ink reservoir and exposed to the atmosphere, and a cross venting channel connecting said opening to said venting passage means at a position intermediate the ends thereof such that a portion of said venting passage means extends upwardly beyond said cross venting channel.
Claim 3
Dependent Claim
53 words
A pen as in claim 1, wherein said ink injection channel extends downwardly from the lower end of said free ink reservoir to a position near the bottom of said contained ink reservoir, and wherein said pen tip is provided with a capillary ink feed in communication with said capillary ink buffer channels.
Claim 4
Dependent Claim
35 words
A pen as in claim 1, wherein said ink buffer channels extend upwardly from the lower end of said contained ink reservoir beyond said opening of said cross venting channel into said main venting channel.
Claim 5
Dependent Claim
28 words
A pen as in claim 3, wherein said ink buffer channels and said venting channel and said opening are located in different portions of said contained ink reservoir.
Claim 6
Dependent Claim
51 words
A pen as in claim 4, wherein a plurality of ink buffer channels are positioned in the side wall of said main venting channel and whereby said cross venting channel opens into that part of said side wall of said venting channel that is not occupied by said ink buffer channels.
Claim 7
Dependent Claim
20 words
A pen as in claim 5, whereby part of said ink buffer means is more capillary than the remainder thereof.
Claim 8
Dependent Claim
61 words
a pen as in claim 5, including a tampon structure, said buffer channels forming a part of said tampon structure, said capillary ink feed of said pen tip extending upwardly into said tampon structure, and wherein said ink injection channel is separated therefrom so as to introduce ink to said buffer channels at the lowermost portion of said contained ink reservoir.
Claim 9
Dependent Claim
29 words
A pen as in claim 7, wherein said upper ink feed extension is enclosed with an inlet openiNg in its top in capillary connection with said tampon buffer channels.
Claim 10
Dependent Claim
103 words
A pen as in claim 1, whereby said contained ink reservoir is part of a holder, and wherein an ink injection block is positioned in the upper compartment of said holder and by means of separation wall means is divided from said contained ink reservoir, said separation wall means urging against the inner side wall of said compartment, the upper end of said injection block connected with said free ink reservoir, the lower end of said injection block connected with the lower end of said contained ink reservoir, and wherein said free ink reservoir comprises a disposable ink cartridge secured to said holder.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |