Patent US1574129A successfully refreshed from Google Patents.
Patent US3972657A successfully refreshed from Google Patents.
US3972657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slant axis rotary mechanism
Assignee: Caterpillar Inc
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Filing: 1975-11-12
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Granted: 1976-08-03
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Expires: 1995-11-12
Abstract
Abstract An improved slant axis rotary mechanism such as an engine, a compressor, pump, or the like. The mechanism includes a housing defining an operating chamber and a shaft is journalled within the housing. The shaft includes an angularly offset portion within the chamber, the angularly offset portion including an outwardly opening peripheral groove. A thrust collar is disposed in the groove and a rotor is journalled on the angularly offset portion. The rotor is formed of two rotor segments secured together with the rotor segments, at their interface, including complementary groove parts clampingly receiving the thrust collar.
Inventors
- 👤 John M. Clarke
- 👤 Paul J. Staebler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:18
CPC Classifications
F; F01; F01C; F01C9/00; F01C9/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
In a slant axis rotary mechanism, the combination of, a housing defining an operating chamber; a shaft journalled within said housing, said shaft including an angularly offset portion within said chamber; said angularly offset portion including an outwardly opening peripheral groove; a thrust collar disposed in said groove; and a rotor journalled on said angularly offset portion, said rotor being formed of two rotor segments secured together, said rotor segments, at their interface, including complementary groove parts clampingly receiving said thrust collar.
Claim 2
Dependent Claim
82 words
In a slant axis rotary mechanism, the combination of, a housing defining an operating chamber; a shaft journalled within said housing, said shaft including an angularly offset portion within said chamber; said angularly offset portion including an outwardly opening peripheral groove; a thrust collar disposed in said groove; and a rotor journalled on said angularly offset portion, said rotor being formed of two rotor segments secured together, said rotor segments, at their interface, including complementary groove parts clampingly receiving said thrust collar.
Claim 3
Dependent Claim
19 words
The slant axis rotary mechanism of claim 1 wherein said thrust collar is formed of at least two segments.
Claim 4
Dependent Claim
24 words
The slant axis rotary mechanism of claim 1 wherein said collar includes a radially outer, peripheral bulbous enlargement clampingly received between said rotor segments.
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) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |