Patent US3696899A successfully refreshed from Google Patents.
US3696899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak-proof fluid coupling
Assignee: Viewlex Inc
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Filing: 1970-12-09
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Granted: 1972-10-10
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Expires: 1990-12-09
Abstract
Abstract A driving rotor wheel is mounted on a shaft. The shaft and rotor are rotatably mounted in a relatively large hollow housing which comprises the driven part of the coupling. The housing has an annular interior recess into which the periphery of the driving wheel extends. The housing is only partially filled and the fluid drive coupling takes place between the wheel and the housing in the area of the recess. In operation, the fluid is urged by centrifigal force to the recessed area. There is never any fluid at the shaft-housing interface, and, therefore, there is no leakage.
Inventors
- 👤 Robert Michael Kongelka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:48
CPC Classifications
F; F16; F16D; F16D35/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
112 words
Fluid coupling means comprising: a wheel-like rotor having a shaft, a housing having an interior reservoir with an annular interior recess, said rotor shaft being rotatably mounted in said housing, the periphery of said rotor extending into said recess, a fluid fill hole located substantially below said shaft when said housing is in filling position, a viscous fluid in said reservoir, the amount of said fluid being determined by the position of said fill hole so as to partially fill said reservoir when said coupling is at rest, whereby no fluid is present at the interface of said housing and said shaft at any attitude of said fluid coupling, at any time.
Claim 2
Dependent Claim
112 words
Fluid coupling means comprising: a wheel-like rotor having a shaft, a housing having an interior reservoir with an annular interior recess, said rotor shaft being rotatably mounted in said housing, the periphery of said rotor extending into said recess, a fluid fill hole located substantially below said shaft when said housing is in filling position, a viscous fluid in said reservoir, the amount of said fluid being determined by the position of said fill hole so as to partially fill said reservoir when said coupling is at rest, whereby no fluid is present at the interface of said housing and said shaft at any attitude of said fluid coupling, at any time.
Claim 3
Dependent Claim
33 words
Apparatus as in claim 1 having a pair of plastic rings connected to said house to seal said reservoir from said shaft, said seals being recessed into said rotor with overlapping by rotor.
References Cited (Backward Citations)
US2629472A
Cited
US2954857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |