US3254640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propulsion device
Assignee: Vernco Corp
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Filing: 1963-05-20
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Granted: 1966-06-07
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Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 Verner E Sprouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:03
CPC Classifications
F; F41; F41B; F41B7/00; F41B7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROPULSION DEVICE, COMPRISING AN ELONGATED HOUSING, A COIL SPRING CARRIED IN SAID HOUSING AND HAVING ONE OF ITS ENDS FIXEDLY CONNECTED THERETO, A COUPLING SLIDABLY CARRIED IN THE HOUSING, SAID COUPLING BEING FIXEDLY CONNECTED TO THE OPPOSITE END OF THE SPRING AND TO A PLUNGER SLIDABLY MOUNTED IN THE HOUSING AND PROJECTING OUTWARDLY FROM ONE END THEREOF, AND A TRIGGER ASSEMBLY MOUNTED ON SAID HOUSING AND ENGAGEABLE WITH THE OUTWARDLY PROJECTING END OF THE PLUNGER, SAID TRIGGER ASSEMBLY RELEASABLY RETAINING SAID PLUNGER IN AN EXTENDED POSITION AND SAID SPRING IN TENSION WHEREBY UPON RELEASE OF THE PLUNGER THE TENSION OF SAID SPRING WILL PROPEL THE HOUSING LONGITUDINALLY IN THE DIRECTION OF THE OUTWARDLY PROJECTING END OF THE PLUNGER.
Claim 2
Dependent Claim
119 words
A PROPULSION DEVICE, COMPRISING AN ELONGATED HOUSING, A COIL SPRING CARRIED IN SAID HOUSING AND HAVING ONE OF ITS ENDS FIXEDLY CONNECTED THERETO, A COUPLING SLIDABLY CARRIED IN THE HOUSING, SAID COUPLING BEING FIXEDLY CONNECTED TO THE OPPOSITE END OF THE SPRING AND TO A PLUNGER SLIDABLY MOUNTED IN THE HOUSING AND PROJECTING OUTWARDLY FROM ONE END THEREOF, AND A TRIGGER ASSEMBLY MOUNTED ON SAID HOUSING AND ENGAGEABLE WITH THE OUTWARDLY PROJECTING END OF THE PLUNGER, SAID TRIGGER ASSEMBLY RELEASABLY RETAINING SAID PLUNGER IN AN EXTENDED POSITION AND SAID SPRING IN TENSION WHEREBY UPON RELEASE OF THE PLUNGER THE TENSION OF SAID SPRING WILL PROPEL THE HOUSING LONGITUDINALLY IN THE DIRECTION OF THE OUTWARDLY PROJECTING END OF THE PLUNGER.
References Cited (Backward Citations)
US1727812A
Cited
US2495460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |