US3942384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swashplate machines
Assignee: PARKER SWASHPLATE Ltd
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Filing: 1974-09-17
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Granted: 1976-03-09
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Expires: 1994-09-17
Abstract
Abstract A Swashplate Machine having a non rotatable swash plate mounted so that rotation of a shaft causes oscillation of the swash plate and one or more baffles mounted in slots in the swash plate dividing the swash plate into portions which oscillate to cause the volume of chambers to vary.
Inventors
- 👤 Alfred Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:58
CPC Classifications
F; F01; F01C; F01C9/00; F01C9/005; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18336
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
213 words
A swash plate machine comprising a casing including two end members and a at least one member providing curved surfaces, a shaft mounted in at least one of said end members, a swash plate non-rotatably mounted in said casing, a bearing between said swash plate and part of said shaft so arranged that rotation of said part of said shaft causes oscillation of said swash plate within said casing, and at least one substantially parallel sided baffle, and seals between said casing, said baffle and said swash plate, said baffle operating in a slot in said swash plate so that the swash plate is divided into portions, each portion oscillating in a chamber defined by two side walls of said baffle, a part of said curved surface of said casing, a surface of said swash plate, a surface of one of said end members, and said seals, said swash plate when oscillating forming variable-volume chambers, at least one baffle being fixed at the edges in said casing and operating in a slot in said swash plate, the walls defining said slot on each side having a cylindrically-shaped central depression flanked on either side by bevelled faces with trunnions having cylindrical surfaces on one side of each shaped to engage said cylindrically-shaped central depression.
Claim 2
Dependent Claim
213 words
A swash plate machine comprising a casing including two end members and a at least one member providing curved surfaces, a shaft mounted in at least one of said end members, a swash plate non-rotatably mounted in said casing, a bearing between said swash plate and part of said shaft so arranged that rotation of said part of said shaft causes oscillation of said swash plate within said casing, and at least one substantially parallel sided baffle, and seals between said casing, said baffle and said swash plate, said baffle operating in a slot in said swash plate so that the swash plate is divided into portions, each portion oscillating in a chamber defined by two side walls of said baffle, a part of said curved surface of said casing, a surface of said swash plate, a surface of one of said end members, and said seals, said swash plate when oscillating forming variable-volume chambers, at least one baffle being fixed at the edges in said casing and operating in a slot in said swash plate, the walls defining said slot on each side having a cylindrically-shaped central depression flanked on either side by bevelled faces with trunnions having cylindrical surfaces on one side of each shaped to engage said cylindrically-shaped central depression.
Claim 3
Dependent Claim
22 words
A swash plate machine as claimed in claim 1 wherein said one baffle is provided fixed at the edges in said casing.
Claim 4
Dependent Claim
36 words
A swash plate as claimed in claim 1 wherein two baffles are provided fixed at the edges of said casing so as to lie substantially in the same plane and on opposite sides of said shaft.
Claim 5
Dependent Claim
27 words
A swash plate machine as claimed in claim 3 wherein two further baffles are provided pivotally mounted in said casing and disposed symmetrically between said fixed baffles.
Claim 6
Dependent Claim
17 words
A swash plate machine as claimed in claim 1 wherein seals are provided between relatively moving parts.
Claim 7
Dependent Claim
33 words
A swash Plate machine as claimed in claim 5 wherein the walls defining each said slot in said swash plate are cylindrical and a part trunnion engages said walls and said swash plate.
Claim 8
Dependent Claim
30 words
A swash plate machine as claimed in claim 1 wherein said swash plate has a spherically contoured central portion and said baffle is contoured to fit against said central portion.
Claim 9
Dependent Claim
29 words
A swash plate machine as claimed in claim 7 wherein said end members have walls defining spherically contoured depressions which bear against said central portion of said swash plate.
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) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |