Impulse-forming and like machines
Abstract
Abstract AN IMPULSE-FORMING, FORGING OR LIKE MACHINE IS OF THE KING IN WHICH THE MOVING MEMBER IS MOVED BY PRESSURE OF A GAS, POSSIBLY AIR, APPLIED INITIALLY TO A SEALED PORTION OF THE OPERATING AREA OF A PISTON MEMBER ASSOCIATED WITH THE MOVING MEMBER, THE SEAL BEING BROKEN SUBSEQUENTLY TO ENABLE THE PRESSURISED GAS TO BE APPLIED SUDDENLY TO SUBSTANTIALLY THE FULL OPERATING AREA OF THE PISTON TO CAUSE SAID MOVING MEMBER TO BE IMPULSED, AND THE MACHINE IS ARRANGED FOR OPERATION WITH A SUBSTANTIALLY UPWARD IMPACTING STROKE OF THE MOVING MEMBER SO THAT GRAVITATIONAL FORCES PROVIDE AT LEAST PART OF THE EFFORT OF RETURNING THE MOVING MEMBER AND ITS PISTON MEMBER TO THEIR INITIAL SET POSITIONS. USE IS MADE POSSIBLE OF SO SHAPING THE PISTON MEMBER AS TO FORM OIL RESERVOIRS FOR LUBRICATING THE PIS- TON, DUCTS MAY BE PROVIDED, LEADING FROM SAID RESERVOIRS TO THE VICINITY OF THE PISTON RINGS.
Inventors
- 👤 Lin Tak Chan
- 👤 Stephen Albert Tobias
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |