US3187640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-stroke actuator
Assignee: Motors Liquidation Co
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Filing: 1962-04-24
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Granted: 1965-06-08
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Expires: 1982-04-24
Abstract
No abstract record available.
Inventors
- 👤 Kenneth W Young
- 👤 James H Flatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:43
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/126; F16K31/1268; B; B60; B60H; B60H1/00; B60H1/00421; B60H1/00435; B60H1/00442; F15; F15B; F15B11/00; F15B11/08; F15B11/12; F15B11/121; F15B11/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A VACUUM ACTUATOR COMPRISING, CASING MEANS, FIRST AND SECOND DIAPHRAGMS SECURED TO SAID CASING MEANS AND MOVABLE RELATIVE THERETO, A FIRST CHAMBER DEFINED BY SAID FIRST DIAPHRAGM AND SAID CASING MEANS, A SECOND CHAMBER DEFINED BY SAID FIRST AND SECOND DIAPHRAGMS, A GUIDE MEMBER SHIFTABLE WITH SAID FIRST DIAPHRAGM SLIDABLY SUPPORTED BY SAID CASING MEANS, A SHAFT MEMBER SECURED TO SAID SECOND DIAPHRAGM AND PASSING THROUGH AN OPENING FORMED IN SAID GUIDE MEMBER, SAID GUIDE MEMBER AND SHAFT MEMBER HAVING A PREDETERMINED CLEARANCE PROVIDING PASSAGE MEANS FOR SAID SECOND CHAMBER THAT IS CONNECTED TO AN AREA EXTERIOR OF SAID FIRST CHAMBER, AND MEANS PROJECTING FROM SAID SHAFT MEMBER AND ENGEGEABLE WITH SAID GUIDE MEMBER WHEREBY SAID GUIDE MEMBER AND SHAFT MEMBER ARE SHIFTED TOGETHER WHEN SAID FIRST DIAPHRAGM IS SHIFTED IN ONE DIRECTION.
Claim 2
Dependent Claim
133 words
A VACUUM ACTUATOR COMPRISING, CASING MEANS, FIRST AND SECOND DIAPHRAGMS SECURED TO SAID CASING MEANS AND MOVABLE RELATIVE THERETO, A FIRST CHAMBER DEFINED BY SAID FIRST DIAPHRAGM AND SAID CASING MEANS, A SECOND CHAMBER DEFINED BY SAID FIRST AND SECOND DIAPHRAGMS, A GUIDE MEMBER SHIFTABLE WITH SAID FIRST DIAPHRAGM SLIDABLY SUPPORTED BY SAID CASING MEANS, A SHAFT MEMBER SECURED TO SAID SECOND DIAPHRAGM AND PASSING THROUGH AN OPENING FORMED IN SAID GUIDE MEMBER, SAID GUIDE MEMBER AND SHAFT MEMBER HAVING A PREDETERMINED CLEARANCE PROVIDING PASSAGE MEANS FOR SAID SECOND CHAMBER THAT IS CONNECTED TO AN AREA EXTERIOR OF SAID FIRST CHAMBER, AND MEANS PROJECTING FROM SAID SHAFT MEMBER AND ENGEGEABLE WITH SAID GUIDE MEMBER WHEREBY SAID GUIDE MEMBER AND SHAFT MEMBER ARE SHIFTED TOGETHER WHEN SAID FIRST DIAPHRAGM IS SHIFTED IN ONE DIRECTION.
References Cited (Backward Citations)
FR999277A
Cited
US1956977A
Cited
US2197075A
Cited
US2658525A
Cited
US3080890A
Cited
US3077186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |