Patent US3873248A successfully refreshed from Google Patents.
US3873248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valving means for a gerotor assembly
Assignee: Individual
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Filing: 1973-09-17
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Granted: 1975-03-25
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Expires: 1993-09-17
Abstract
Abstract A valving device for use with a gerotor assembly whether used as a pump or a motor which includes a valving disc placed adjacent to a gerotor face which will control the flow both into and out of the gerotor pockets. The movement of the valving disc is restrained from total rotation but moves in an orbit to open and close in sequential operation, feed and discharge ports such that the rotor will be provided with pressurizing fluid on one side of its extending arms and fluid from the opposite side of the arms will be free to exhaust through the adjacent exhaust port. The rotor is directly connected to an input or output shaft such that the unit may be utilized as a pump or motor and in a modified form of the invention a dual system is illustrated which will utilize a pair of control valving discs.
Inventors
- 👤 Oliver W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:44
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/103; F04C2/105; F01; F01C; F01C1/00; F01C1/08; F01C1/10; F01C1/104; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
175 words
A gerotor assembly including: a. a stationary, internally toothed stator; b. an externally toothed rotor having one less tooth than said stator and being received in said stator; c. a shaft connected to said rotor; d. an end plate on the end of said stator and rotor for sealing the same; e. a pair of flow passages including a fluid inlet and a fluid outlet arranged respectively on opposite sides of said internal teeth of said stator; f. a valving disc arranged on said rotor for movment therewith but arranged for rotation relative thereto, said disc having a plurality of apertures therethrough, said apertures being located and having dimension to control flow through said inlets and outlets and into and out of the areas between the internal and external teeth of said stator and rotor; and, g. means for restraining rotation of said valving disc such that one aperture will control each of said inlet and output pairs including tie rods joining said stator and said end plate and passing respectively through said disc apertures.
Claim 2
Dependent Claim
175 words
A gerotor assembly including: a. a stationary, internally toothed stator; b. an externally toothed rotor having one less tooth than said stator and being received in said stator; c. a shaft connected to said rotor; d. an end plate on the end of said stator and rotor for sealing the same; e. a pair of flow passages including a fluid inlet and a fluid outlet arranged respectively on opposite sides of said internal teeth of said stator; f. a valving disc arranged on said rotor for movment therewith but arranged for rotation relative thereto, said disc having a plurality of apertures therethrough, said apertures being located and having dimension to control flow through said inlets and outlets and into and out of the areas between the internal and external teeth of said stator and rotor; and, g. means for restraining rotation of said valving disc such that one aperture will control each of said inlet and output pairs including tie rods joining said stator and said end plate and passing respectively through said disc apertures.
Claim 3
Dependent Claim
27 words
The structure set forth in claim 1 and said rotor being provided with a bearing member generally centrally thereof, said valving disc being mounted for rotation thereon.
Claim 4
Dependent Claim
32 words
The structure set forth in claim 1 and one set of said flow passages being directed through said end plate, the other set of said flow passages being directed in said stator.
Claim 5
Dependent Claim
30 words
The structure set forth in claim 1 and one of said tie rods being provided for each of said teeth, each valving disc aperture received respectively about each such rod.
Claim 6
Dependent Claim
22 words
The structure set forth in claim 1 and said valving disc being arranged between said end plate and said stator and rotor.
Claim 7
Dependent Claim
30 words
The structure set forth in claim 2 and a spacer ring being arranged between said end plate and said stator, said valving disc being arranged for movement within said ring.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |