US3142006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnetic chuck
Assignee: Taft Peirce Manufacturing Co
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Filing: 1960-10-07
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Granted: 1964-07-21
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Expires: 1980-10-07
Abstract
No abstract record available.
Inventors
- 👤 Stead Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:40
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/15; B23Q3/154; B23Q3/1546
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A PERMANENT MAGNETIC CHUCK, A BODY MEMBER HAVING VERTICAL SIDE WALLS AND UPPER BARS EXTENDING TRANSVERSELY BETWEEN THE SIDE WALLS AND INTEGRAL THEREWITH, SAID BARS BEING SPACED LATERALLY FROM EACH OTHER FORMING TRANSVERSE CHANNELS OPEN AT EACH END, AND AN INSERTED TRANSVERSE BAR MOUNTED IN EACH OF SAID CHANNELS BETWEEN SAID INTEGRAL BARS AND SEPARATED THEREFROM AND SUPPORTED IN EACH CASE BY SOLID CAST NON-MAGNETIC MATERIAL, SAID INTEGRAL AND INSERTED BARS EACH COMPRISING A POLE PIECE AND EACH HAVING AN UPPER SURFACE LOCATED IN A COMMON PLANE AND FORMING THE TOP SURFACE OF A WORK PLATE.
Claim 2
Dependent Claim
97 words
IN A PERMANENT MAGNETIC CHUCK, A BODY MEMBER HAVING VERTICAL SIDE WALLS AND UPPER BARS EXTENDING TRANSVERSELY BETWEEN THE SIDE WALLS AND INTEGRAL THEREWITH, SAID BARS BEING SPACED LATERALLY FROM EACH OTHER FORMING TRANSVERSE CHANNELS OPEN AT EACH END, AND AN INSERTED TRANSVERSE BAR MOUNTED IN EACH OF SAID CHANNELS BETWEEN SAID INTEGRAL BARS AND SEPARATED THEREFROM AND SUPPORTED IN EACH CASE BY SOLID CAST NON-MAGNETIC MATERIAL, SAID INTEGRAL AND INSERTED BARS EACH COMPRISING A POLE PIECE AND EACH HAVING AN UPPER SURFACE LOCATED IN A COMMON PLANE AND FORMING THE TOP SURFACE OF A WORK PLATE.
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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |