Patent US3275376A successfully refreshed from Google Patents.
US3275376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retainer for coal cutter bits
Assignee: FRANK PROX CO Inc
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Filing: 1964-04-17
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Granted: 1966-09-27
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Expires: 1984-04-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert F Prox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:58
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/19; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17042; Y10T279/17085; Y10T403/00; Y10T403/60; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/21; Y10T74/2101; Y10T74/2102
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
IN COMBINATION; A SOCKET MEMBER, FIRST AND SECOND INTERSECTING PASSAGEWAYS EACH EXTENDING THROUGH SAID SOCKET MEMBER, AN INTERCONNECTING APERTURE FORMED BY THE INTERSECTING OF SAID PASSAGEWAYS, A CUTTER BIT, SAID CUTTER BIT HAVING A HEAD SECTION AND A SHANK SECTION, SAID SHANK SECTION BEING SLIDABLY FITTED THROUGH SAID FIRST PASSAGEWAY IN THE SOCKET MEMBER; DETENT MEANS; SAID DETENT MEANS BEING FIXED AGAINST ROTATION IN SAID SECOND PASSAGEWAY TO RELEASABLY SECURE SAID CUTTER BIT SHANK IN SAID FIRST PASSAGEWAY; SAID DETENT MEANS COMPRISING AN ELONGATED ESTOMERIC CYLINDER, A CUT-OUT SECTION MIDWAY ALONG SAID CYLINDER, NON-YIELDING ABUTTING MEANS, SAID ABUTTING MEANS BEING FIXED IN SAID CUT-OUT SO AS TO FORM A CONTIGUOUS SURFACE WITH THE ELASTOMERIC CYLINDER, SAID ABUTTING MEANS
Claim 2
Dependent Claim
118 words
IN COMBINATION; A SOCKET MEMBER, FIRST AND SECOND INTERSECTING PASSAGEWAYS EACH EXTENDING THROUGH SAID SOCKET MEMBER, AN INTERCONNECTING APERTURE FORMED BY THE INTERSECTING OF SAID PASSAGEWAYS, A CUTTER BIT, SAID CUTTER BIT HAVING A HEAD SECTION AND A SHANK SECTION, SAID SHANK SECTION BEING SLIDABLY FITTED THROUGH SAID FIRST PASSAGEWAY IN THE SOCKET MEMBER; DETENT MEANS; SAID DETENT MEANS BEING FIXED AGAINST ROTATION IN SAID SECOND PASSAGEWAY TO RELEASABLY SECURE SAID CUTTER BIT SHANK IN SAID FIRST PASSAGEWAY; SAID DETENT MEANS COMPRISING AN ELONGATED ESTOMERIC CYLINDER, A CUT-OUT SECTION MIDWAY ALONG SAID CYLINDER, NON-YIELDING ABUTTING MEANS, SAID ABUTTING MEANS BEING FIXED IN SAID CUT-OUT SO AS TO FORM A CONTIGUOUS SURFACE WITH THE ELASTOMERIC CYLINDER, SAID ABUTTING MEANS
Claim 3
Dependent Claim
78 words
A RESILIENT DETENT MEANS CONSISTING OF: A ELASTOMERIC CYLINDER, AN INTEGRAL FLANGE EXTENDING FROM THE SURFACE OF SAID CYLINDER PARALLEL TO THE AXIS THEREOF, A CUT-OUT SECTION MIDWAY, ALONG THE LENGTH OF THE CYLINDER OPPOSITE SAID FLANGE, A RIGID ABUTMENT MEANS, SAID ABUTMENT MEANS BEING SHAPED IDENTICALLY TO THE CUT-OUT IN THE CYLINDER, MEANS FIXING SAID ABUTMENT MEANS IN THE CUT-OUT IN THE CYLINDR AS TO FORM A CONTIGUOUS SURFACE INCLUDING THE ELASTOMERIC MATERIAL AND THE ABUTMENT MEANS.
Claim 4
Dependent Claim
78 words
A RESILIENT DETENT MEANS CONSISTING OF: A ELASTOMERIC CYLINDER, AN INTEGRAL FLANGE EXTENDING FROM THE SURFACE OF SAID CYLINDER PARALLEL TO THE AXIS THEREOF, A CUT-OUT SECTION MIDWAY, ALONG THE LENGTH OF THE CYLINDER OPPOSITE SAID FLANGE, A RIGID ABUTMENT MEANS, SAID ABUTMENT MEANS BEING SHAPED IDENTICALLY TO THE CUT-OUT IN THE CYLINDER, MEANS FIXING SAID ABUTMENT MEANS IN THE CUT-OUT IN THE CYLINDR AS TO FORM A CONTIGUOUS SURFACE INCLUDING THE ELASTOMERIC MATERIAL AND THE ABUTMENT MEANS.
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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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |