US3133408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thruster
Assignee: Individual
•
Filing: 1962-02-15
•
Granted: 1964-05-19
•
Expires: 1982-02-15
Abstract
No abstract record available.
Inventors
- 👤 Albert M Stott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:07
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/006; B; B64; B64C; B64C1/00; B64C1/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
IN A THRUSTER COMPRISING A CYLINDRICAL BODY, A PISTON AND PISTON ROD, A CARTRIDGE CASE IN SAID BODY, SAID CARTRIDGE CASE BEING CLOSED AT THE END FACING SAID PISTON ROD, SAID PISTON AND PISTON ROD BEING MOVABLE BY GAS PRESSURE FROM SAID CARTRIDGE CASE, A PROPELLANT WITHIN SAID CARTRIDGE CASE, AND MEANS FOR FIRING SAID PROPELLANT, THE COMBINATION THEREWITH OF THE IMPROVEMENT FOR HOLDING THE PISTON LOCKED WITH RESPECT TO SAID CYLINDRICAL BODY UNTIL THE PROPELLANT HAS BEEN FIRED WHEREBY THE DANGER OF THE THRUSTER BEING PREMATURELY UNLOCKED IS REDUCED AND SAID THRUSTER IS SIMPLIFIED IN CONSTRUCTION AND REDUCED IN WEIGHT, SAID IMPROVEMENT INCLUDING A FRAGIBLE PORTION OF SAID CARTRIDGE CASE ADJACENT SAID PISTON, SAID FRANGIBLE PORTION BEING DEFINED BY A CIRCUMFERENTIALLY THINNED WALL BETWEEN THE ENDS OF SAID CARTRIDGE CASE, A LOCKING KEY SUPPORTED BY THE PORTION OF SAID CARTRIDGE CASE FORWARD OF SAID FRANGIBLE PORTION AND ENGAGING WALLS OF A RECESS IN SAID PISTON AND SAID CYLINDRICAL BODY, SAID CARTRIDGE CASE PORTION FORWARD OF SAID FRANGIBLE PORTION BEING MOVABLE AXIALLY RELATIVE TO SAID PISTON AFTER RUP-
Claim 2
Dependent Claim
178 words
IN A THRUSTER COMPRISING A CYLINDRICAL BODY, A PISTON AND PISTON ROD, A CARTRIDGE CASE IN SAID BODY, SAID CARTRIDGE CASE BEING CLOSED AT THE END FACING SAID PISTON ROD, SAID PISTON AND PISTON ROD BEING MOVABLE BY GAS PRESSURE FROM SAID CARTRIDGE CASE, A PROPELLANT WITHIN SAID CARTRIDGE CASE, AND MEANS FOR FIRING SAID PROPELLANT, THE COMBINATION THEREWITH OF THE IMPROVEMENT FOR HOLDING THE PISTON LOCKED WITH RESPECT TO SAID CYLINDRICAL BODY UNTIL THE PROPELLANT HAS BEEN FIRED WHEREBY THE DANGER OF THE THRUSTER BEING PREMATURELY UNLOCKED IS REDUCED AND SAID THRUSTER IS SIMPLIFIED IN CONSTRUCTION AND REDUCED IN WEIGHT, SAID IMPROVEMENT INCLUDING A FRAGIBLE PORTION OF SAID CARTRIDGE CASE ADJACENT SAID PISTON, SAID FRANGIBLE PORTION BEING DEFINED BY A CIRCUMFERENTIALLY THINNED WALL BETWEEN THE ENDS OF SAID CARTRIDGE CASE, A LOCKING KEY SUPPORTED BY THE PORTION OF SAID CARTRIDGE CASE FORWARD OF SAID FRANGIBLE PORTION AND ENGAGING WALLS OF A RECESS IN SAID PISTON AND SAID CYLINDRICAL BODY, SAID CARTRIDGE CASE PORTION FORWARD OF SAID FRANGIBLE PORTION BEING MOVABLE AXIALLY RELATIVE TO SAID PISTON AFTER RUP-
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) | 1967-05-19 | 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 |