Patent US3133472A successfully refreshed from Google Patents.
US3133472A
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Impact device control system
Assignee: ELECTRO MECHANICS Inc
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Filing: 1961-09-05
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Granted: 1964-05-19
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Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Henry Zollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:58
CPC Classifications
B; B25; B25D; B25D9/00; B25D9/14; B25D9/26; F; F16; F16H; F16H39/00; F16H39/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A CONTROL SYSTEM FOR AN IMPACT DEVICE HAVING AN IMPACT PISTON MOVABLE WITHIN A CYLINDER BETWEEN A RETRACTED POSITION AND AN IMPACT POSITION, COMPRISING; A FIRST PRESSURIZED AIR SOURCE, A SECOND PRESSURIZED AIR SOURCE, THE PRESSURE OF SAID SECOND SOURCE BEING GREATER THAN THE PRESSURE OF SAID FIRST SOURCE, A FIRST CONDUIT CONNECTING THE FIRST SOURCE, TO ONE END OF THE CYLINDER TO URGE THE PISTON TO THE IMPACT POSITION, A SECOND CONDUIT CONNECTING THE SECOND SOURCE TO THE OTHER END OF THE CYLINDER TO URGE THE PISTON TO THE RETRACTED POSITION, AND CONTROL MEANS INCLUDING MEANS RESPONSIVE TO THE POSITION OF THE PISTON WITHIN THE CYLINDER PERIODICALLY CONNECTING SAID OTHER END OF THE CYLINDER TO EXHAUST.
Claim 2
Dependent Claim
117 words
A CONTROL SYSTEM FOR AN IMPACT DEVICE HAVING AN IMPACT PISTON MOVABLE WITHIN A CYLINDER BETWEEN A RETRACTED POSITION AND AN IMPACT POSITION, COMPRISING; A FIRST PRESSURIZED AIR SOURCE, A SECOND PRESSURIZED AIR SOURCE, THE PRESSURE OF SAID SECOND SOURCE BEING GREATER THAN THE PRESSURE OF SAID FIRST SOURCE, A FIRST CONDUIT CONNECTING THE FIRST SOURCE, TO ONE END OF THE CYLINDER TO URGE THE PISTON TO THE IMPACT POSITION, A SECOND CONDUIT CONNECTING THE SECOND SOURCE TO THE OTHER END OF THE CYLINDER TO URGE THE PISTON TO THE RETRACTED POSITION, AND CONTROL MEANS INCLUDING MEANS RESPONSIVE TO THE POSITION OF THE PISTON WITHIN THE CYLINDER PERIODICALLY CONNECTING SAID OTHER END OF THE CYLINDER TO EXHAUST.
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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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |