US3681919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic-machine system
Assignee: Linde GmbH
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Filing: 1970-10-28
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Granted: 1972-08-08
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Expires: 1990-10-28
Abstract
Abstract A hydrostatic-machine system in which a plurality of hydrostatic machines, e.g., pumps or motors, are connected together in building block or modular relationship by bolting at complementary confronting faces thereof. Each machine has an outer housing of prismatic, preferably cubic, configuration. The faces of the prism, which are not employed for connection with other such machines, are provided with cover plates and/or ports which can be connected with hydrostatic machines of the assembly via ducts attached upon removal of the plates.
Inventors
- 👤 Franz Forster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:47
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/02; F16H57/033; F01; F01B; F01B3/00; F01B3/0082; F01B3/0091
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
172 words
A hydrostatic assembly comprising at least two piston-stroke hydrostatic machines, each having a respective shaft rotatable independently of the shaft of the other machine, each of said hydrostatic machines being formed with a respective closed housing having generally planar sides and being closed at all sides to enable independent operation of each machine, the shaft of each of said machines projectIng only through one side of the respective housing, means in other sides of each housing forming a fluid inlet and a fluid outlet for the respective machines, said sides of said housings defining geometrically similar confronting flanges, means for detachably securing said machines together with said housings in abutting relationship at said flanges, said flanges being constructed and arranged to enable hydrostatic machines of the same dimensions and configurations and hydrostatic machines of different dimensions and geometrically similar configurations to be affixed to either of the machines in the formation of the assembly, and removable conduit means attached to corresponding sides of said machines for interconnecting the inlets and outlets thereof.
Claim 2
Dependent Claim
172 words
A hydrostatic assembly comprising at least two piston-stroke hydrostatic machines, each having a respective shaft rotatable independently of the shaft of the other machine, each of said hydrostatic machines being formed with a respective closed housing having generally planar sides and being closed at all sides to enable independent operation of each machine, the shaft of each of said machines projectIng only through one side of the respective housing, means in other sides of each housing forming a fluid inlet and a fluid outlet for the respective machines, said sides of said housings defining geometrically similar confronting flanges, means for detachably securing said machines together with said housings in abutting relationship at said flanges, said flanges being constructed and arranged to enable hydrostatic machines of the same dimensions and configurations and hydrostatic machines of different dimensions and geometrically similar configurations to be affixed to either of the machines in the formation of the assembly, and removable conduit means attached to corresponding sides of said machines for interconnecting the inlets and outlets thereof.
Claim 3
Dependent Claim
44 words
The hydrostatic assembly defined in claim 1 wherein each of said housings is prismatic, at least one of said machines being provided within the respective housing with means receiving the projecting shaft of the other machine for coupling of said shafts for joint rotation.
Claim 4
Dependent Claim
25 words
The hydrostatic assembly defined in claim 1 wherein each of said machines has a plurality of geometrically identical flanges for interconnection of other machines thereto.
Claim 5
Dependent Claim
41 words
The hydrostatic assembly defined in claim 3 wherein at least some of said flanges of each machine lies in planes parallel to the axis of the respective shaft and another of said flanges lies in a plane perpendicular to said axis.
Claim 6
Dependent Claim
56 words
The hydrostatic assembly defined in claim 4 wherein at least some of said flanges comprise an outer planar surface formed with a central recess and an inner planar surface set back from said outer recess at the base of said recess, both said surfaces being formed with means for connecting hydrostatic devices to the respective flange.
Claim 7
Dependent Claim
37 words
The hydrostatic assembly defined in claim 5, further comprising ports formed within the recesses of at least some of said flanges in the housing of a respective one of said machines and defining said inlets and outlets.
Claim 8
Dependent Claim
23 words
The hydrostatic assembly defined in claim 6, further comprising a cover plate received in one of said recesses for closing the respective port.
Claim 9
Dependent Claim
35 words
The hydrostatic assembly defined in claim 6 wherein said conduit means includes at least one plate received in one of said recesses and formed with a duct communicating with the port of the corresponding recess.
Claim 10
Dependent Claim
27 words
The hydrostatic assembly defined in claim 8, further comprising means on at least one of said machines for securing a control device externally to the housing thereof.
Claim 11
Dependent Claim
34 words
The hydrostatic assembly defined in claim 8 wherein one of said machines is an axial piston pump and another of said machines is an axial piston motor whereby said assembly constitutes a hydraulic transmission.
Claim 12
Dependent Claim
15 words
The hydrostatic assembly defined in claim 6 wherein said port is coaxial with said recess.
Claim 13
Dependent Claim
33 words
The hydrostatic assembly defined in claim 6 wherein said ports are symmetrically located with respect to the corresponding flanges whereby the machines are interconnectable at said flanges in a plurality of different positions.
Claim 14
Dependent Claim
28 words
The hydrostatic assembly defined in claim 3 wherein the interconnected flanges of two such machines are provided with respective coaxial circular recesses and a ring interconnecting said recesses.
Claim 15
Dependent Claim
31 words
The hydrostatic assembly defined in claim 13 wherein said recesses are of different diameters and said ring is stepped with corresponding steps of the ring being reclined in the respective recesses.
Claim 16
Dependent Claim
39 words
The hydrostatic assembly defined in claim 13 wherein at least one of said recesses is coaxial with at least one further recess of a different diameter adapted to accommodate a ring of a different size on the corresponding flange.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |