Patent US3760592A successfully refreshed from Google Patents.
US3138073A
Expired / Lapsed
US
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Precision stroke piston and cylinder
Assignee: CENTRE CIRCUITS Inc
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Filing: 1963-03-18
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Granted: 1964-06-23
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Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 Roger R Whitehouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:24
CPC Classifications
G; G01; G01B; G01B13/00; G01B13/12; F; F15; F15B; F15B11/00; F15B11/16; F15B11/18; F15B15/00; F15B15/08; F15B15/14; F15B15/1423; F15B15/1433; F15B15/1447; G01B3/00; G01B3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
GAGE MECHANISM COMPRISING A CYLINDER, A SLIDEABLE PISTON IN THE BORE THEREOF, A CYLINDER CAP CAPPING THE HEAD OF SAID BORE, SAID CYLINDER HAVING A CLOSED-END WALL DEFINING A FIXED, TRANSVERSE INTERIOR FACE ENGAGEABLE BY THE PISTON IN MOVING FROM SAID CAP IN ONE DIRECTION OF STROKE IN THE BORE OF SAID CYLINDER, AND MEANS FOR ADJUSTING SAID CYLINDER CAP WITH RESPECT TO SAID CYLINDER FOR CHANGING THE EFFECTIVE LENGTH OF THE BORE TO AFFORD A PREDETERMINED PISTON STROKE, SAID ADJUSTING MEANS BEING CARRIED BY THE CYLINDER AND HAVING CLEARANCE WITH RESPECT TO THE CYLINDER, SAID CAP DEFINING A SECOND, TRANSVERSE INTERIOR FACE ENGAGEABLE BY THE PISTON AT THE OPPOSITE END OF STROKE, SAID CAP HAVING A PILOTING PORTION, SAID PILOTING PORTION AND THE PISTON ARRANGED EACH ONE ENGAGED WITH THE SAME BORE, AND WITH THE PILOTING PORTION HAVING AN EXTENDED SURFACE AND EFFECTING TIGHT, METAL-TO-METAL CONTACT WITH THE BORE WHEREBY SAID TRANSVERSE INTERIOR FACES MAINTAIN PRECISE PARALLELISM WITH ONE ANOTHER IN ALL POSITIONS OF ADJUSTMENT OF SAID CAP.
Claim 2
Dependent Claim
169 words
GAGE MECHANISM COMPRISING A CYLINDER, A SLIDEABLE PISTON IN THE BORE THEREOF, A CYLINDER CAP CAPPING THE HEAD OF SAID BORE, SAID CYLINDER HAVING A CLOSED-END WALL DEFINING A FIXED, TRANSVERSE INTERIOR FACE ENGAGEABLE BY THE PISTON IN MOVING FROM SAID CAP IN ONE DIRECTION OF STROKE IN THE BORE OF SAID CYLINDER, AND MEANS FOR ADJUSTING SAID CYLINDER CAP WITH RESPECT TO SAID CYLINDER FOR CHANGING THE EFFECTIVE LENGTH OF THE BORE TO AFFORD A PREDETERMINED PISTON STROKE, SAID ADJUSTING MEANS BEING CARRIED BY THE CYLINDER AND HAVING CLEARANCE WITH RESPECT TO THE CYLINDER, SAID CAP DEFINING A SECOND, TRANSVERSE INTERIOR FACE ENGAGEABLE BY THE PISTON AT THE OPPOSITE END OF STROKE, SAID CAP HAVING A PILOTING PORTION, SAID PILOTING PORTION AND THE PISTON ARRANGED EACH ONE ENGAGED WITH THE SAME BORE, AND WITH THE PILOTING PORTION HAVING AN EXTENDED SURFACE AND EFFECTING TIGHT, METAL-TO-METAL CONTACT WITH THE BORE WHEREBY SAID TRANSVERSE INTERIOR FACES MAINTAIN PRECISE PARALLELISM WITH ONE ANOTHER IN ALL POSITIONS OF ADJUSTMENT OF SAID CAP.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |