US3626786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston-crank mechanisms
Assignee: Yamaha Motor Co Ltd
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Filing: 1970-01-26
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Granted: 1971-12-14
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Expires: 1990-01-26
Abstract
Abstract A PISTON-CRANK MECHANISM OF THE TYPE COMPRISING A PISTON DISPOSED IN A CYLINDER FOR RECIPROCAL MOTION THEREIN, A CRANK SHAFT ROTATABLY MOUNTED WITHIN A CRANK CASE AND A CONNECTING ROD CONNECTING SAID PISTON WITH SAID CRANK SHAFT. AN INTERNAL GEAR IS FFIXED IN THE CRANK CASE AND A SMALL GEAR HAVING A NUMBER OF TEETH ONE HALF OF THAT OF THE INTERNAL GEAR IS ROTATABLY MOUNTED ON THE CRANK PIN OF THE CRANK SHAFT. THE CONNECTING ROD HAS ONE END PIVOTALLY CONNECTED TO THE PISTON AND THE OTHER END PIVOTALLY CONNECTED TO THE SMALL GEAR.
Inventors
- 👤 Haruo Kinoshita
- 👤 Isao Shirayanagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:10
CPC Classifications
F; F01; F01B; F01B9/00; F01B9/02; F16; F16F; F16F15/00; F16F15/22; F16F15/26; F16F15/264; F16H; F16H21/00; F16H21/10; F16H21/16; F16H21/18; F16H21/36; F16H21/365; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20528; Y10T74/2054; Y10T74/21; Y10T74/2173; Y10T74/2183; Y10T74/2184
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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |