US3274903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston motor
Assignee: Chicago Pneumatic Tool Co LLC
•
Filing: 1965-02-02
•
Granted: 1966-09-27
•
Expires: 1985-02-02
Abstract
No abstract record available.
Inventors
- 👤 Howard R Fischer
- 👤 Livio F Marcantonio
- 👤 Haem Marcel P D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:51
CPC Classifications
B; B26; B26B; B26B17/00; B26B17/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
A PNEUMATIC RECIPROCATING MOTOR COMPRISING A CYLINDER PROVIDING A PISTON CHAMBER OPENING THROUGH THE FRONT END OF THE CYLINDER, A CYLINDER HEAD SCREWABLE INTO THE FRONT END OF THE CYLINDER FOR A SELECTIVE DISTANCE, THE PISTON HAVING AN EXTENSION PROJECTING FORWARDLY AND BEING AXIALLY SLIDABLE WITHING THE CYLINDER FORWARDLY AND BEEXTENSION HAVING A PLURALITY OF LONGITUDINAL GROOVES IN ITS OUTER SURFACE, THE CYLINDER HEAD HAVING IN ITS INTERIOR SURFACE A PLURALITY OF LONGITUDINAL GROOVES, EACH REGISTERING WITH AND COMPLEMENTING AN ASSOCIATED GROOVE ON THE PISTON EXTENSION, A PLURALITY OF HELICAL COMPRESSION SPRINGS, EACH DISPOSED IN A PAIR OF SAID COMPLEMENTARY GROOVES AND INTERPOSED BETWEEN THE PISTON AND CYLINDER HEAD TO
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |