US3588296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Center housing for a rotary piston engine
Assignee: Mazda Motor Corp
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Filing: 1969-09-08
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Granted: 1971-06-28
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Expires: 1989-09-08
Abstract
Abstract THE CENTER HOUSING OF A ROTARY PISTON ENGINE HAS SPACED INNER AND OUTER WALL PORTIONS FACILITATING AXIAL FLOW OF COOLING FLUID AND HAS SOME OF THE BOLT BOSSES AND RIBS WHICH NORMALLY CONNECT THE WALL PORTIONS ARE INTEGRALLY FORMED WITH THE OUTER WALL PORTION BUT UNCONNECTED TO THE INNER WALL PORTION SO THAT THE INNER WALL PORTION ADJACENT TO THE IGNITION PLUG RECEIVING HOLE IS RELATIVELY FLEXIBLE.
Inventors
- 👤 Yoji Toyama
- 👤 Yutaka Hirose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:43
CPC Classifications
F; F02; F02B; F02B55/00; F02B55/08; F02B55/10; F02B53/00; F02B2053/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |