Patent US3679334A successfully refreshed from Google Patents.
US3679334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid power unit
Assignee: Individual
•
Filing: 1970-08-21
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Granted: 1972-07-25
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Expires: 1990-08-21
Abstract
Abstract A rotary, fixed displacement fluid motor or pump. In a particular embodiment, an axially short, compact fluid power unit is provided utilizing roller bearings integrally disposed in angular contact between the annular bearing surfaces of a central rotor and axially juxtaposed side plates. The rotating rim of the central rotor is exposed and designed to accept a tire tim on its periphery and to replace and fit within the space used by the conventional wheel hub and brake assembly of a vehicle. Alternatively, a pulley rim can be superannularly disposed on the central rotor rim. In another embodiment, the power unit components are encased in a housing and power is transmitted via a rotating shaft journaled in extensions through the housing.
Inventors
- 👤 Walter Keldrauk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:39
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0057; F04C15/0061; F03; F03C; F03C2/00; F03C2/08; F04C2/00; F04C2/08; F04C2/10; F04C2/101
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
179 words
A fluid power unit comprising: an integral annular rotor member formed with annular inwardly directed teeth, a superannular rim an annular side surface extending radially outwardly from said teeth and continuing as an annular bearing surface directed laterally outwardly of the remainder of said rotor side surface; a stationary member axially adjacent said rotor, formed with at least one fluid port therethrough and having an annular side surface in juxtaposition with said rotor side surface and continuing radially outwardly as an annular bearing surface directed laterally outwardly of said rotor member side surface, said stationary member bearing surface confronting said rotor bearing surface, said stationary member side surface continuing radially outwardly to enclose said rotor bearing surface and formed to allow access to the rim of said rotor: bearings disposed in angular contact between said rotor member and stationary member bearing surfaces; and means for displacing fluid in conjunction with rotary movement of said rotor comprising a second rotor formed with annular outwardly directed teeth in eccentric meshing relation with the inwardly directed teeth of said first mentioned rotor.
Claim 2
Dependent Claim
179 words
A fluid power unit comprising: an integral annular rotor member formed with annular inwardly directed teeth, a superannular rim an annular side surface extending radially outwardly from said teeth and continuing as an annular bearing surface directed laterally outwardly of the remainder of said rotor side surface; a stationary member axially adjacent said rotor, formed with at least one fluid port therethrough and having an annular side surface in juxtaposition with said rotor side surface and continuing radially outwardly as an annular bearing surface directed laterally outwardly of said rotor member side surface, said stationary member bearing surface confronting said rotor bearing surface, said stationary member side surface continuing radially outwardly to enclose said rotor bearing surface and formed to allow access to the rim of said rotor: bearings disposed in angular contact between said rotor member and stationary member bearing surfaces; and means for displacing fluid in conjunction with rotary movement of said rotor comprising a second rotor formed with annular outwardly directed teeth in eccentric meshing relation with the inwardly directed teeth of said first mentioned rotor.
Claim 3
Dependent Claim
13 words
The invention according to claim 1 in which said bearings are ball bearings.
Claim 4
Dependent Claim
21 words
The invention according to claim 1 in which said stationary member is formed with inlet and outlet ports for said fluid.
Claim 5
Dependent Claim
26 words
The invention according to claim 1 in which the rotational axis of said second rotor is spaced from the rotational axis of said first mentioned rotor.
Claim 6
Dependent Claim
35 words
The invention according to claim 1 including an annular sealing member on said rotor radially outwardly of said rotor bearing surface and means for urging said sealing member into slidable contact with said stationary member.
Claim 7
Dependent Claim
15 words
The invention according to claim 1 including a tire superannularly secured to said rotor rim.
Claim 8
Dependent Claim
16 words
The invention according to claim 1 including a pulley rim superannularly secured to said rotor rim.
Claim 9
Dependent Claim
31 words
The invention according to claim 1 including an axially central shaft rotatably journaled in extension through said stationary member whereby to provide external communication with the rotational movement of said rotors.
Claim 10
Dependent Claim
59 words
The invention according to claim 1 in which a pair of Said stationary members are axially juxtaposed on opposite sides of said rotor, said rotor is formed on each axial side with said annular bearing surfaces in confrontation with respective stationary member bearing surfaces, and said stationary members are formed with symmetrically positioned inlet and outlet fluid ports therethrough.
Claim 11
Dependent Claim
44 words
The invention according to claim 1 in which a pair of said stationary members are axially juxtaposed on opposite sides of said rotor, said rotor is formed on each axial side with said annular bearing surfaces in confrontation with respective stationary member bearing surfaces.
Claim 12
Dependent Claim
36 words
The invention according to claim 2 in which a fluid inlet port is formed through one of said pair of stationary members and a fluid outlet port is formed through the other of said stationary members.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |