US3664128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission with internal power distribution
Assignee: Linde GmbH
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Filing: 1971-01-07
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Granted: 1972-05-23
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Expires: 1991-01-07
Abstract
Abstract This invention relates to a power transmission with a drive shaft and with an output shaft, and with branched internal power distribution consisting of a direct branch for transmission of mechanical drive and a hydrostatic power transmission in a power branch. The hydrostatic power transmission consists of a primary swash plate unit and a secondary swash plate unit which are disposed coaxially with respect to each other and rest against a common symmetrical control element.
Inventors
- 👤 Walter Heyl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:26
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/02; F16H39/00; F16H39/04; F16H39/06; F16H39/08; F16H39/10; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19037
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
104 words
A power transmission having a drive shaft and output shaft with internal power distribution paths therebetween including a hydrostatic transmission in one path, the hydrostatic transmission comprising hydraulically interconnected primary and secondary power units, each including a relatively rotatable cylinder drum having plural pistons axially reciprocal therein and a relatively rotatable swash plate in driving cooperation with said pistons, and a control unit including a relatively rotatable control element rotationally interconnecting said swash plates, the relatively rotatable element of one of said units being spatially fixed and the relatively rotatable elements of the remaining units being connected to said drive and output shafts, respectively.
Claim 2
Dependent Claim
104 words
A power transmission having a drive shaft and output shaft with internal power distribution paths therebetween including a hydrostatic transmission in one path, the hydrostatic transmission comprising hydraulically interconnected primary and secondary power units, each including a relatively rotatable cylinder drum having plural pistons axially reciprocal therein and a relatively rotatable swash plate in driving cooperation with said pistons, and a control unit including a relatively rotatable control element rotationally interconnecting said swash plates, the relatively rotatable element of one of said units being spatially fixed and the relatively rotatable elements of the remaining units being connected to said drive and output shafts, respectively.
Claim 3
Dependent Claim
22 words
A power transmission according to claim 1 wherein said spatially fixed element comprises the cylinder drum of one of said power units.
Claim 4
Dependent Claim
42 words
Power transmission according to claim 2 wherein said spatially fixed element is the cylinder drum of said primary unit, the cylinder drum of said other poWer unit being connected to said output shaft, said swash plates being connected to said drive shaft.
Claim 5
Dependent Claim
36 words
Power transmission according to claim 3 wherein said drive shaft is centrally disposed in said transmission, and the cylinder drum of said secondary unit is connected to said output shaft by means of a rotary housing.
Claim 6
Dependent Claim
67 words
Power transmission according to claim 3 wherein said control element and swash plates are disposed within a rotating housing, said housing being rotatably supported at one end by a coaxially disposed spatially fixed unit to which the cylinder drum of said primary unit is fixedly connected, and, on the other end by said output shaft to which the cylinder drum of the secondary unit is fixedly connected.
Claim 7
Dependent Claim
58 words
Power transmission according to claim 2 wherein said control element and swash plates are connected to a rotating housing supported on both ends by shafts fixedly connected to the cylinder drums of said power units, each of said last referred to shafts being selectively and alternately either braked to be spatially fixed or connected to said output shaft.
Claim 8
Dependent Claim
46 words
Power transmission according to claim 2 wherein said spatially fixed cylinder drum is the cylinder drum of said secondary unit, the cylinder drum of said other power unit being connected to said drive shaft, said swash plates and control element being connected to said output shaft.
Claim 9
Dependent Claim
30 words
Power transmission according to claim 7 wherein said secondary unit encompasses said drive shaft, and wherein a rotary housing encompassing the primary unit connects said control element and output shaft.
Claim 10
Dependent Claim
91 words
Power transmission according to claim 2 wherein the cylinder drum of said primary unit is connected to said drive shaft by means of a rotary housing, and comprising brake means selectively spatially fixing the cylinder drum of said secondary unit, a centrally arranged shaft connecting said control element and swash plates, clutch means selectively connecting said centrally arranged shaft to said output shaft, and brake means for selectively spatially fixing said centrally arranged shaft and clutch means for selectively connecting the cylinder drum of said secondary unit to said output shaft.
Claim 11
Dependent Claim
50 words
Power transmission according to claim 9 further comprising actuating members for said clutch and brake means and wherein an actuating member for at least one of said brake means and an actuating member for at least one of said clutch means are connected to each other for simultaneous actuation thereof.
References Cited (Backward Citations)
US3131580A
Cited
US3609973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |