Patent US3233368A successfully refreshed from Google Patents.
US3233368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual pressure work rest
Assignee: Landis Tool Co
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Filing: 1962-05-03
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Granted: 1966-02-08
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Expires: 1982-05-03
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:51
CPC Classifications
B; B24; B24B; B24B41/00; B24B41/06; B24B41/065
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
IN A GRINDING MACHINE, A GRINDING WHEEL SUPPORT, A GRINDING WHEEL ON SAID WHEEL SUPPORT, FEEDING MEANS FOR ADVANCING SAID GRINDING WHEEL TOWARD A WORKPIECE FOR A GRINDING OPERATION, A WORK REST FOR SUPPORTING A WORKPIECE AGAINST SAID GRINDING WHEEL, A WORK REST SHOE ON SAID WORK REST FOR ENGAGING AND SUPPORTING A WORKPIECE, A FREE CAM ENGAGING AND SUPPORTING A WORKPIECE, RELATION WITH ONE END OF SAID CAM FOR SHIFTING SAID CAM AND ADVANCING SAID SHOE AGAINST SAID WORKPIECE, A FLUID PRESSURE ACTUATED PISTON IN ABUTTING RELATION WITH THE OTHER END OF SAID CAM, AND MEANS TO APPLY A LOW BACK PRESSURE TO SAID PISTON DURING PART OF A GRINDING OPERATION AND TO APPLY A HIGH BACK PRESSURE ON SAID PISTON DURING ANOTHER PART OF THE GRINDING OPERATION.
References Cited (Backward Citations)
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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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |