US3094103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball-point pen insert
Assignee: Schneider Gebr GmbH
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Filing: 1960-06-01
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Granted: 1963-06-18
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Expires: 1980-06-01
Abstract
No abstract record available.
Inventors
- 👤 Trefzer Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:24
CPC Classifications
B; B43; B43K; B43K1/00; B43K1/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
A BALL-POINT PEN INSERT FOR USE WITH INK HAVING A VISCOSITY DECREASING UPON AN INCREASE IN TEMPERATURE, COMPRISING, IN COMBINATION, A SOCKET CONSISTING OF METAL; AND A BALL POSITIONED IN AND PARTLY SURROUNDED BY SAID SOCKET WITH RELATIVELY SMALL CLEARANCE SO AS TO BE RETAINED THEREBY, SAID BALL BEING MADE OF A MATERIAL HAVING A COEFFICIENT OF THERMAL EXPANSION SEVERAL TIMES AS HIGH AS THAT OF SAID METAL OF SAID SOCKET, WHEREBY SAID CLEARANCE BETWEEN SAID BALL AND SOCKET WILL DECREASE UPON AN INCREASE IN TEMPERATURE AND VICE VERSA SO AS TO COMPENSATE FOR CORRESPONDING CHANGES IN SAID VISCOSITY OF SAID INK.
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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |