Patent US3333857A successfully refreshed from Google Patents.
US3333857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal grinding wheel chuck
Assignee: Individual
•
Filing: 1964-12-03
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Granted: 1967-08-01
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Expires: 1984-12-03
Abstract
No abstract record available.
Inventors
- 👤 George V Lindgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:42
CPC Classifications
B; B24; B24B; B24B45/00; B24D; B24D7/00; B24D7/16; Y; Y10; Y10T; Y10T279/00; Y10T279/19; Y10T279/1926; Y10T279/1986
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A GRINDING WHEEL CHUCK, COMPRISING: A CIRCULAR BODY HAVING A FLAT, CIRCULAR RECEIVING SURFACE FOR RECEIVING AN END OF A RIGHT CYLINDRICAL OBJECT, SAID BODY HAVING A PLURALITY OF RADIAL GROOVES FORMED THEREIN IN A PLANE PARALLEL TO SAID RECEIVING SURFACE; A PLURALITY OF RADIAL MOVEMENT GRIPPING JAWS EACH CORRESPONDING TO A SEPARATE ONE OF SAID GROOVES, SAID JAWS BEING SLIDABLE ALONG THE PLANE OF SAID CIRCULAR FLAT SURFACE AND EXTENSIBLE BEYOND THE CIRCUMFERENCE THEREOF; AND CONTINUOUSLY VARIABLE CAM MEANS COUPLED TO SAID BODY AND SAID JAWS FOR SIMULTANEOUSLY ADJUSTING THE RADIAL POSITION OF ALL OF SAID JAWS BY A SINGLE CONTINUOUS CONTROL MOTION, SAID CAM MEANS INCLUDING A ROTATABLE ANNULAR CAM MEMBER HAVING A PLURALITY OF SPIRALED CAM SLOTS FORMED THEREIN, AND A PLURALITY OF CAM FOLLOWER BLOCKS DISPOSED IN SAID GROOVES AND CONNECTED TO SAID JAWS AND ENGAGED BY SAID CAM MEMBER IN SAID CAM SLOTS, SAID CAM MEMBER BEING DISPOSED ON SAID BODY BEHIND AND CONCENTRIC WITH SAID CIRCULAR RECEIVING SURFACE, SAID JAWS BEING FORMED OF SPRING HARDENED MATERIAL AND HAVING CONCAVE GRIPPING SURFACE OF A LESSER RADIUS OF CURVATURE THAN THE CIRCUMFERENCE OF A CYLINDRICAL GRINDING WHEEL ADAPTED TO BE RECEIVED BY SAID CHUCK.
Claim 2
Dependent Claim
198 words
A GRINDING WHEEL CHUCK, COMPRISING: A CIRCULAR BODY HAVING A FLAT, CIRCULAR RECEIVING SURFACE FOR RECEIVING AN END OF A RIGHT CYLINDRICAL OBJECT, SAID BODY HAVING A PLURALITY OF RADIAL GROOVES FORMED THEREIN IN A PLANE PARALLEL TO SAID RECEIVING SURFACE; A PLURALITY OF RADIAL MOVEMENT GRIPPING JAWS EACH CORRESPONDING TO A SEPARATE ONE OF SAID GROOVES, SAID JAWS BEING SLIDABLE ALONG THE PLANE OF SAID CIRCULAR FLAT SURFACE AND EXTENSIBLE BEYOND THE CIRCUMFERENCE THEREOF; AND CONTINUOUSLY VARIABLE CAM MEANS COUPLED TO SAID BODY AND SAID JAWS FOR SIMULTANEOUSLY ADJUSTING THE RADIAL POSITION OF ALL OF SAID JAWS BY A SINGLE CONTINUOUS CONTROL MOTION, SAID CAM MEANS INCLUDING A ROTATABLE ANNULAR CAM MEMBER HAVING A PLURALITY OF SPIRALED CAM SLOTS FORMED THEREIN, AND A PLURALITY OF CAM FOLLOWER BLOCKS DISPOSED IN SAID GROOVES AND CONNECTED TO SAID JAWS AND ENGAGED BY SAID CAM MEMBER IN SAID CAM SLOTS, SAID CAM MEMBER BEING DISPOSED ON SAID BODY BEHIND AND CONCENTRIC WITH SAID CIRCULAR RECEIVING SURFACE, SAID JAWS BEING FORMED OF SPRING HARDENED MATERIAL AND HAVING CONCAVE GRIPPING SURFACE OF A LESSER RADIUS OF CURVATURE THAN THE CIRCUMFERENCE OF A CYLINDRICAL GRINDING WHEEL ADAPTED TO BE RECEIVED BY SAID CHUCK.
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |