US3089291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding machine
Assignee: Heald Machine Co
•
Filing: 1961-11-02
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Granted: 1963-05-14
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Expires: 1981-11-02
Abstract
No abstract record available.
Inventors
- 👤 Norman S Humes
- 👤 Frederick A Hohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:13
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/18; B24B5/307; B24B5/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A GRINDING MACHINE FOR FINISHING A WORKPIECE HAVING AN EXTERNAL SURFACE OF REVOLUTION, COMPRISING MEANS FOR SUPPORTING THE WORKPIECE BY CONTACT WITH THE EXTERNAL SURFACE THEREOF, MEANS FOR ROTATING THE WORKPIECE ABOUT THE AXIS OF THE SAID SURFACE, A WHEELHEAD HAVING A SPINDLE AND AN ABRASIVE WHEEL MOUNTED ON THE SPINDLE, MEANS TO BRING ABOUT RELATIVE MOVEMENT BETWEEN THE WORKHEAD AND THE WHEELHEAD TO BRING ABOUT AN ABRADING ACTION BETWEEN THE WHEEL AND THE WORKPIECE, AND SHOES ASSOCIATED WITH THE SUPPORTING MEANS AND CONTACTING THE EXTERNAL SURFACE OF THE WORKPIECE, THE SAID SHOES BEING FORMED OF AN ELASTOMER MATERIAL OF HIGH ABRASIVE RESISTANCE.
Claim 2
Dependent Claim
103 words
A GRINDING MACHINE FOR FINISHING A WORKPIECE HAVING AN EXTERNAL SURFACE OF REVOLUTION, COMPRISING MEANS FOR SUPPORTING THE WORKPIECE BY CONTACT WITH THE EXTERNAL SURFACE THEREOF, MEANS FOR ROTATING THE WORKPIECE ABOUT THE AXIS OF THE SAID SURFACE, A WHEELHEAD HAVING A SPINDLE AND AN ABRASIVE WHEEL MOUNTED ON THE SPINDLE, MEANS TO BRING ABOUT RELATIVE MOVEMENT BETWEEN THE WORKHEAD AND THE WHEELHEAD TO BRING ABOUT AN ABRADING ACTION BETWEEN THE WHEEL AND THE WORKPIECE, AND SHOES ASSOCIATED WITH THE SUPPORTING MEANS AND CONTACTING THE EXTERNAL SURFACE OF THE WORKPIECE, THE SAID SHOES BEING FORMED OF AN ELASTOMER MATERIAL OF HIGH ABRASIVE RESISTANCE.
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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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |