Patent US3207277A successfully refreshed from Google Patents.
US3207277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acceleration control
Assignee: Spence Engineering Co Inc
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Filing: 1961-08-24
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Granted: 1965-09-21
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Expires: 1981-08-24
Abstract
No abstract record available.
Inventors
- 👤 L B Dexter
- 👤 O C Paulsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:29
CPC Classifications
F; F02; F02D; F02D29/00; F02D2700/00; F02D2700/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN COMBINATION, CLUTCHING MEANS FOR CONNECTING AND DISCONNECTING AN INTERNAL-COMBUSION ENGINE TO AND FROM A LOAD, SAID CLUTCHING MEANS INCLUDING FIRST FLUID-PRESSSURE RESPONSIVE OPERATING MEANS, A SOURCE OF FLUID PRESSURE AND A CONTROL COUPLED TO SAID OPERATING MEANS FOR DETERMINING THE ENGAGED OR DISENGAGED CONDITION OF SAID CLUTCHING MEANS, ENGINE-THROTTLING MEANS INCLUDING SECOND FLUID-PRESSURE RESPONSIVE OPERATING MEANS, CONNECTING MEANS COUPLING SAID SOURCE AND CONTROL TO SAID SECOND FLUID-PRESSURE RESPONSIVE MEANS, INCLUDING DELAY-OPERATED MEANS PRODUCING A DELAY IN OPENING OF SAID THROTTLING MEANS UPON ACTUATION OF SAID CLUTCHING MEANS TO ENGAGED POSITION, SAID CONNECTING MEANS FURTHER INCLUDING FLOW CONTROL MEANS PERMITTING SUBSTANTIALLY UNIMPEDED EXHAUSTING FLUID FLOW IN A FIRST DIRECTION AND SUBSTANTIALLY IMPEDED FLOW IN A SECOND DIRECTION TO EXHAUST SAID SECOND FLUID-PRESSURE RESPONSIVE OPERATING MEANS
Claim 2
Dependent Claim
125 words
IN COMBINATION, CLUTCHING MEANS FOR CONNECTING AND DISCONNECTING AN INTERNAL-COMBUSION ENGINE TO AND FROM A LOAD, SAID CLUTCHING MEANS INCLUDING FIRST FLUID-PRESSSURE RESPONSIVE OPERATING MEANS, A SOURCE OF FLUID PRESSURE AND A CONTROL COUPLED TO SAID OPERATING MEANS FOR DETERMINING THE ENGAGED OR DISENGAGED CONDITION OF SAID CLUTCHING MEANS, ENGINE-THROTTLING MEANS INCLUDING SECOND FLUID-PRESSURE RESPONSIVE OPERATING MEANS, CONNECTING MEANS COUPLING SAID SOURCE AND CONTROL TO SAID SECOND FLUID-PRESSURE RESPONSIVE MEANS, INCLUDING DELAY-OPERATED MEANS PRODUCING A DELAY IN OPENING OF SAID THROTTLING MEANS UPON ACTUATION OF SAID CLUTCHING MEANS TO ENGAGED POSITION, SAID CONNECTING MEANS FURTHER INCLUDING FLOW CONTROL MEANS PERMITTING SUBSTANTIALLY UNIMPEDED EXHAUSTING FLUID FLOW IN A FIRST DIRECTION AND SUBSTANTIALLY IMPEDED FLOW IN A SECOND DIRECTION TO EXHAUST SAID SECOND FLUID-PRESSURE RESPONSIVE OPERATING MEANS
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |