US3834164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic torque converter
Assignee: KOPAT Gesellschaft fur Konstruktion Entwicklung und Patent Verwertung mbH and Co KG
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Filing: 1973-01-24
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Granted: 1974-09-10
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Expires: 1993-01-24
Abstract
Abstract A hydrostatic torque converter which comprises a joint housing, an axial piston-pump to constitute a pump part and an axial piston-motor to constitute a motor part with variable feedingand absorption-volume, respectively, within the joint housing, in particular for the use as a drive controlled in accordance with the output requirement for the drive of a generator operating with a comparatively high number of revolutions variable at a ratio of about 1:5 by means of an internal combustion engine with an essentially lower number of revolutions variable in turn at a ratio of about 1:6. The volume ratio of the pump part and the motor part of the converter amounts to about more than 1:1. The pump part and the motor part have swinging bodies rotatably mounted in the housing. A servo setting cylinder, a piston reciprocating therein, and a rod mechanism are coupled together. The swinging bodies are controlled by the servo cylinder with the piston by means of said mechanism such, that the output speed of the converter corresponds with the desired generator driving output which is maintained by variation of the feeding quantity of the axial piston-pump and for the absorption quantity of the axial piston-motor independent from the input speed of the converter.
Inventors
- 👤 K Ritter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:44
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/46; F16H39/00; F16H39/04; F16H39/06; F16H39/08; F16H39/10; F16H39/14; F16H61/42; F16H61/421; F16H61/431
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
208 words
A hydrostatic torque converter comprising a joint housing, an axial piston-pump constituting a pump part and an axial piston-motor constituting a motor part with variable feeding and absorption-volume, respectively, within said joint housing, in particular for the use as a drive controlled in accordance with the output requirement for the drive of a generator operating with a comparatively high number of revolutions variable within a range of under substantially 12,000 rpm by means of an internal combustion engine with an essentially lower number of revolutions than that of said generator and variable in turn under substantially 5,000 rpm, the volume ratio of said pump part and said motor part of said converter amounting to between 1.5:1 and 2:1, said pump part and said motor part having swinging bodies rotatably mounted in said housing, a servo setting cylinder, a piston reciprocating therein, and a rod mechanism, coupled together, said swinging bodies being controlled by said servo cylinder with said piston by means of said rod mechanism such, that the output speed of said converter corresponds with the desired generator driving speed maintained by variation of the feeding quantity of said axial piston-pump and for the absorption quantity of said axial piston-motor independent of the input speed of said converter.
Claim 2
Dependent Claim
208 words
A hydrostatic torque converter comprising a joint housing, an axial piston-pump constituting a pump part and an axial piston-motor constituting a motor part with variable feeding and absorption-volume, respectively, within said joint housing, in particular for the use as a drive controlled in accordance with the output requirement for the drive of a generator operating with a comparatively high number of revolutions variable within a range of under substantially 12,000 rpm by means of an internal combustion engine with an essentially lower number of revolutions than that of said generator and variable in turn under substantially 5,000 rpm, the volume ratio of said pump part and said motor part of said converter amounting to between 1.5:1 and 2:1, said pump part and said motor part having swinging bodies rotatably mounted in said housing, a servo setting cylinder, a piston reciprocating therein, and a rod mechanism, coupled together, said swinging bodies being controlled by said servo cylinder with said piston by means of said rod mechanism such, that the output speed of said converter corresponds with the desired generator driving speed maintained by variation of the feeding quantity of said axial piston-pump and for the absorption quantity of said axial piston-motor independent of the input speed of said converter.
Claim 3
Dependent Claim
72 words
The hydrostatic torque converter, as set forth in claim 1, wherein said rod mechanism engages said swinging body of said axial piston pump with a larger lever arm than said swinging body of said axial piston motor, and said rod mechanism leading to the latter is variable relative to its length such, that its system length is capable of being shortened automatically, upon reaching the largest swinging angle limited by abutment means.
Claim 4
Dependent Claim
54 words
The hydrostatic torque converter, as set forth in claim 1, wherein said pump part and said motor part are designed in ''''back-to-back'''' arrangement, a control slide, a joint control disc for both of said parts, and said servo setting cylinder and said control slide are disposed substantially in the plane of said control disc.
Claim 5
Dependent Claim
39 words
The hydrostatic torque converter, as set forth in claim 1, wherein said control disc closes said joint housing on one sIde, and said pump part and said motor part are disposed on the same side of said control disc.
Claim 6
Dependent Claim
60 words
The hydrostatic torque converter, as set forth in claim 4, which includes a generator having connecting means on said housing and being disposed in the plane of and parallel to said pump part and said motor part, and said generator is connected with said output shaft of said motor part by means of a traction drive transmitted into high speed.
Claim 7
Dependent Claim
39 words
The hydrostatic torque converter, as set forth in claim 1, which includes two filling pumps, one of said filling pumps is driven by said input shaft, and the other of said filling pumps is driven by said output shaft.
Claim 8
Dependent Claim
40 words
The hydrostatic torque converter, as set forth in claim 1, which includes a discharge valve controlled by a centrifugal force and disposed in said output shaft for the filling liquid for an automatic limitation of the maximum number of revolutions.
Claim 9
Dependent Claim
33 words
The hydrostatic torque converter, as set forth in claim 1, wherein the bottom part of said housing constitutes an oil container, and includes a plurality of channels for feeding a cooling liquid therethrough.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |