US3276434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: TRU POINT PRODUCTS Inc
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Filing: 1965-07-26
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Granted: 1966-10-04
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Expires: 1985-07-26
Abstract
No abstract record available.
Inventors
- 👤 Virgil D Dorstewitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:01
CPC Classifications
B; B43; B43L; B43L23/00; B43L23/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A REPLACEABLE ABRASIVE ASSEMBLY FOR A PENCIL POINTER WITH A BODY MEMBER HAVING A CHAMBER OPEN AT ITS OUTER END, AND A POST DISPOSED IN SAID CHAMBER AND SUPPORTEDLY CONNECTED TO THE BOTTOM OF SAID BODY MEMBER, SAID ASSEMBLY COMPRISING AN OUTWARDLY OPENING ANNULAR ABRASIVE ELEMENT HAVING A TRANSVERSELY TURNED FLANGE AT ITS INNER END, SAID ABRASIVE ELEMENT HAVING AN OPENING IN ITS INNER END, AN ANNULAR HOLDER MEMBER HAVING A PLURALITY OF RADIALLY EXTENDING AND ANGULARLY SPACED COUPLING MEMBERS WITH WHICH SAID ABRASIVE ELEMENT MAY BE ENGAGED AND DISENGAGED BY RELATIVE ROTATION OF SAID ABRASIVE ELEMENT AND HOLDER MEMBER, AND A SPRING SEAT ON SAID HOLDER MEMBER, SAID FLANGE ON SAID ABRASIVE ELEMENT BEING SUPPORTINGLY ENGAGEABLE WITH SAID COUPLING MEMBERS AND HAVING NOTCHES THEREIN SPACED TO PASS SAID COUPLING MEMBERS, SAID HOLDER MEMBER HAVING A RECESS FORMED THEREIN TO NON-ROTATABLY RECEIVE A PORTION OF A SPRING ENGAGED WITH SAID SEAT.
Claim 2
Dependent Claim
151 words
A REPLACEABLE ABRASIVE ASSEMBLY FOR A PENCIL POINTER WITH A BODY MEMBER HAVING A CHAMBER OPEN AT ITS OUTER END, AND A POST DISPOSED IN SAID CHAMBER AND SUPPORTEDLY CONNECTED TO THE BOTTOM OF SAID BODY MEMBER, SAID ASSEMBLY COMPRISING AN OUTWARDLY OPENING ANNULAR ABRASIVE ELEMENT HAVING A TRANSVERSELY TURNED FLANGE AT ITS INNER END, SAID ABRASIVE ELEMENT HAVING AN OPENING IN ITS INNER END, AN ANNULAR HOLDER MEMBER HAVING A PLURALITY OF RADIALLY EXTENDING AND ANGULARLY SPACED COUPLING MEMBERS WITH WHICH SAID ABRASIVE ELEMENT MAY BE ENGAGED AND DISENGAGED BY RELATIVE ROTATION OF SAID ABRASIVE ELEMENT AND HOLDER MEMBER, AND A SPRING SEAT ON SAID HOLDER MEMBER, SAID FLANGE ON SAID ABRASIVE ELEMENT BEING SUPPORTINGLY ENGAGEABLE WITH SAID COUPLING MEMBERS AND HAVING NOTCHES THEREIN SPACED TO PASS SAID COUPLING MEMBERS, SAID HOLDER MEMBER HAVING A RECESS FORMED THEREIN TO NON-ROTATABLY RECEIVE A PORTION OF A SPRING ENGAGED WITH SAID SEAT.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |