Patent US3087737A successfully refreshed from Google Patents.
US3087737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm type chuck
Assignee: Individual
•
Filing: 1961-09-07
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Granted: 1963-04-30
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Expires: 1981-09-07
Abstract
No abstract record available.
Inventors
- 👤 Carl H Werth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:42
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/32; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1233; Y10T279/24; Y10T279/243; Y10T279/31; Y10T279/34; Y10T279/3487
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A DIAPHRAGM TYPE CHUCK HAVING A MOUNTING MEMBER AND A PLURALITY OF CIRCUMFERENTIALLY SPACED WORK RECEIVING JAWS; THE COMBINATION WITH SAID MEMBER AND JAWS OF A DIAPHRAGM PORTION CONNECTED THEREBETWEEN AND HAVING A PAIR OF GENERALLY RADIALLY EXTENDING, PARALLEL GROOVES STRADDLING AND GENERALLY PARALLELING EACH JAW SUCH THAT SAID JAWS ARE DEFLECTABLE AXIALLY WHILE THE AREA BETWEEN SAID GROOVES REMAINS SUBSTANTIALLY STATIONARY TO SERVE AS A WORK STOP SURFACE.
Claim 2
Dependent Claim
70 words
IN A DIAPHRAGM TYPE CHUCK HAVING A MOUNTING MEMBER AND A PLURALITY OF CIRCUMFERENTIALLY SPACED WORK RECEIVING JAWS; THE COMBINATION WITH SAID MEMBER AND JAWS OF A DIAPHRAGM PORTION CONNECTED THEREBETWEEN AND HAVING A PAIR OF GENERALLY RADIALLY EXTENDING, PARALLEL GROOVES STRADDLING AND GENERALLY PARALLELING EACH JAW SUCH THAT SAID JAWS ARE DEFLECTABLE AXIALLY WHILE THE AREA BETWEEN SAID GROOVES REMAINS SUBSTANTIALLY STATIONARY TO SERVE AS A WORK STOP SURFACE.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |