Patent US3129538A successfully refreshed from Google Patents.
US3129538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective device for grinding machines
Assignee: Saint Gobain Abrasives Inc
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Filing: 1961-07-31
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Granted: 1964-04-21
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 William R Backer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:22
CPC Classifications
F; F16; F16P; F16P5/00; F16P5/005; B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q5/00; B23Q5/54; B23Q5/58; B24; B24B; B24B55/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A MACHINE HAVING A BASE WITH A WHEEL SLIDE SUPPORTED THEREON, A WHEEL ON THE SLID AND A HOOD HOUSING THE WHEEL; INTERLAPPING GUIDES, ONE OF WHICH IS ON THE SLIDE, AND MEANS CONNECTING THE OTHER GUIDE TO THE BASE, SAID MEANS SUPPORTING SAID OTHER GUIDE IN SPACED PARALLEL RELATION TO THE ONE SO THAT THEY DO NOT INTERFERE WITH FREE SLIDING MOVEMENT OF THE SLIDE ON THE BASE, AND SAID MEANS INCLUDING TENSION ELEMENTS OPERATING, BY DEFORMATION IN TENSION DUE TO ABNORMAL FORCES OPERATING TO LIFT THE SLIDE FROM THE BASE, TO DISSIPATE SAID FORCES AFTER THE SLIDE IS LIFTED SUFFCIENTLY FROM THE BASE TO BRING THE SPACED INTERLAPPING GUIDES INTO MUTUAL ENGAGEMENT.
Claim 2
Dependent Claim
115 words
IN A MACHINE HAVING A BASE WITH A WHEEL SLIDE SUPPORTED THEREON, A WHEEL ON THE SLID AND A HOOD HOUSING THE WHEEL; INTERLAPPING GUIDES, ONE OF WHICH IS ON THE SLIDE, AND MEANS CONNECTING THE OTHER GUIDE TO THE BASE, SAID MEANS SUPPORTING SAID OTHER GUIDE IN SPACED PARALLEL RELATION TO THE ONE SO THAT THEY DO NOT INTERFERE WITH FREE SLIDING MOVEMENT OF THE SLIDE ON THE BASE, AND SAID MEANS INCLUDING TENSION ELEMENTS OPERATING, BY DEFORMATION IN TENSION DUE TO ABNORMAL FORCES OPERATING TO LIFT THE SLIDE FROM THE BASE, TO DISSIPATE SAID FORCES AFTER THE SLIDE IS LIFTED SUFFCIENTLY FROM THE BASE TO BRING THE SPACED INTERLAPPING GUIDES INTO MUTUAL ENGAGEMENT.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |