US3982861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor construction for slant axis rotary mechanisms
Assignee: Caterpillar Inc
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Filing: 1975-12-12
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Granted: 1976-09-28
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Expires: 1995-12-12
Abstract
Abstract An improved slant axis rotary mechanism of the type including a housing, a shaft journalled in the housing, an angularly offset portion on the shaft and a rotor journalled on the angularly offset portion. The angularly offset portion includes a peripheral thrust collar and the rotor is formed of two pieces which sandwich the thrust collar. One of the rotor pieces includes a central cavity spaced from the angularly offset portion and a plurality of bolts are within the cavity and secure the pieces of the rotor together.
Inventors
- 👤 Myron R. Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:59
CPC Classifications
F; F01; F01C; F01C9/00; F01C9/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
In a slant axis rotary mechanism including a housing, a shaft journalled in the housing, an angularly offset portion on said shaft and including a peripheral thrust collar, and a two-piece rotor journalled on said angularly offset portion and sandwiching said thrust collar, said rotor having a spherical hub with a peripheral flange, the improvement wherein one of said rotor pieces includes a central cavity spaced from said angularly offset portion, and a plurality of angularly spaced bolts within said cavity and extending through said pieces to secure said pieces together.
Claim 2
Dependent Claim
91 words
In a slant axis rotary mechanism including a housing, a shaft journalled in the housing, an angularly offset portion on said shaft and including a peripheral thrust collar, and a two-piece rotor journalled on said angularly offset portion and sandwiching said thrust collar, said rotor having a spherical hub with a peripheral flange, the improvement wherein one of said rotor pieces includes a central cavity spaced from said angularly offset portion, and a plurality of angularly spaced bolts within said cavity and extending through said pieces to secure said pieces together.
Claim 3
Dependent Claim
30 words
The slant axis rotary mechanism of claim 1 wherein the other of said pieces includes a bore receiving a portion of said one piece, said pieces being press fitted together.
Claim 4
Dependent Claim
31 words
The slant axis rotary mechanism of claim 1 wherein said hub mounts piston seals at predetermined locations, the interface of said pieces extending through at least some of said predetermined locations.
Claim 5
Dependent Claim
61 words
The slant axis rotary mechanism of claim 1 wherein the other of said pieces includes a central bore, at least a portion of which is at least equal in diameter to said thrust collar, said one piece having an inner cylindrical section received in said bore portion, said bolts securing said pieces together at said cylindrical section and said bore portion.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |