US3238889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston drive mechanism
Assignee: Aero Spray Inc
•
Filing: 1963-06-03
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Granted: 1966-03-08
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Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 Vincent J Huber
- 👤 James S Mccartney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:34
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/02; F04B9/04; F04B27/00; F04B27/02; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18024; Y10T74/18056; Y10T74/18248
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
AN APPARATUS INCLUDING A HOUSING HAVING AN ALIGNED CYLINDER CHAMBER AT EACH END, A PISTON ASSEMBLY IN SAID HOUSING INCLUDING A PISTON IN EACH CHAMBER AND A CONNECTING ROD OF SMALLER TRANSVERSE DIMENSION THAN THE DIAMETER OF THE PISTON CONNECTING SAID PISTONS AND DRIVE MEANS FOR AXIALLY RECIPROCATING SAID PISTONS AND COOPERABLE SURFACES ON SAID DRIVE MEANS AND THE INNER OPPOSED ENDS OF SAID PISTONS FOR ROTATING SAID PISTON ASSEMBLY ABOUT ITS AXIS.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |