US3565218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodynamic decelerator
Assignee: Continental Teves AG and Co OHG
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Filing: 1968-12-18
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Granted: 1971-02-23
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Expires: 1988-12-18
Abstract
Abstract A hydrodynamic or hydrokinetic decelerator for a rotatable shaft has a rotor mounted on the shaft and a stator facing it and forming a fluid-circulating pump with it. This axially immobile stator is selectively decoupled from and coupled with the housing of the decelerator to be made stationary in the latter case, to allow braking action to take place, or rotates freely with the rotor when no braking is desired to minimize frictional power losses in the decelerator.
Inventors
- 👤 Kurt Franke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:04
CPC Classifications
F; F16; F16D; F16D57/00; F16D57/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
A hydrodynamic decelerator for a shaft rotatable relatively to a support in the power train of an automotive vehicle having a hydraulic brake system, said decelerator comprising a housing enclosing an axis and mounted on said support; a rotor rotatably entrained by said shaft and received in said housing; a stator received in said housing, said rotor including a sleeve received in said housing and extending axially there within to axiallyopposite housing walls and sealed at said walls with respect to said housing; a bearing mounted on said sleeve and rotatably carrying said stator, said stator and said rotor being mutually concave to define between them at least one pumping chamber, said stator and said rotor defining with said housing at least one fluid-receiving chamber, said stator being formed with openings communicating between said chambers and with a cylindrical outer periphery; a band-type brake surrounding said periphery and engageable therewith upon tightening of the brake; hydraulic cylinder means on said housing coupled with said band-type brake; means connecting said hydraulic cylinder with said hydraulic brake system for actuation thereby; and heat-exchanger means connected with said chambers for dissipating hydrodynamic braking energy converted to heat of a fluid received in said chambers.
Claim 2
Dependent Claim
201 words
A hydrodynamic decelerator for a shaft rotatable relatively to a support in the power train of an automotive vehicle having a hydraulic brake system, said decelerator comprising a housing enclosing an axis and mounted on said support; a rotor rotatably entrained by said shaft and received in said housing; a stator received in said housing, said rotor including a sleeve received in said housing and extending axially there within to axiallyopposite housing walls and sealed at said walls with respect to said housing; a bearing mounted on said sleeve and rotatably carrying said stator, said stator and said rotor being mutually concave to define between them at least one pumping chamber, said stator and said rotor defining with said housing at least one fluid-receiving chamber, said stator being formed with openings communicating between said chambers and with a cylindrical outer periphery; a band-type brake surrounding said periphery and engageable therewith upon tightening of the brake; hydraulic cylinder means on said housing coupled with said band-type brake; means connecting said hydraulic cylinder with said hydraulic brake system for actuation thereby; and heat-exchanger means connected with said chambers for dissipating hydrodynamic braking energy converted to heat of a fluid received in said chambers.
References Cited (Backward Citations)
US2748570A
Cited
US3467225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |