Patent US3613847A successfully refreshed from Google Patents.
US3613847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid drive coupling
Assignee: Aisin Corp
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Filing: 1969-12-12
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Granted: 1971-10-19
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Expires: 1989-12-12
Abstract
Abstract A fluid-coupling device of temperature responsive type for automotive use, wherein fluid chamber means constituted by an output member is divided by a partition plate supported by the output member into a fluid-working chamber carrying an input member therein and a fluid reservoir or storage chamber, the partition plate radially outward comprising an impact portion, a discharge hole in front thereof and an inlet opening in back thereof relative to the direction of the inlet hole or discharge opening and being covered by a valve arm disposed axially and operated thermostatically so as to control the volume of viscous fluid supplied to the driving rotor.
Inventors
- 👤 Hiroto Masai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:21
CPC Classifications
F; F16; F16D; F16D35/00; F16D35/02; F16D35/021; F16D35/023
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
236 words
A fluid-coupling device comprising a first rotatable member defining a fluid chamber, a second rotatable member rotatably mounted on said fluid chamber, said first and second rotatable members having spaced opposed surface portions defining a shear space therebetween and cooperable with a fluid shear medium within said shear space to provide a shear-type fluid drive between said rotatable members, a partition member securely mounted on said first rotatable member and dividing said fluid chamber into a working chamber and a reservoir chamber, an impact element projecting into said working chamber, said partition member being provided with an inlet opening and a discharge opening disposed circumferentially on opposite sides of said impact element, said inlet and discharge openings being disposed behind and in front of said impact element respectively with respect to the rotational dIrection of movement of said rotatable members, a valve plate means disposed within said reservoir chamber and slidably movable on the surface of said partition member to control the flow of fluid to and from said working chamber through said openings, temperature responsive means operatively connected to said valve plate means, whereby said inlet opening is closed by said valve plate means when the atmospheric temperature is relatively low and whereby said discharge opening is closed when the atmospheric temperature is relatively high, the fluid shear medium flowing between said working chamber and said reservoir chamber in response to changes in atmospheric temperature.
Claim 2
Dependent Claim
236 words
A fluid-coupling device comprising a first rotatable member defining a fluid chamber, a second rotatable member rotatably mounted on said fluid chamber, said first and second rotatable members having spaced opposed surface portions defining a shear space therebetween and cooperable with a fluid shear medium within said shear space to provide a shear-type fluid drive between said rotatable members, a partition member securely mounted on said first rotatable member and dividing said fluid chamber into a working chamber and a reservoir chamber, an impact element projecting into said working chamber, said partition member being provided with an inlet opening and a discharge opening disposed circumferentially on opposite sides of said impact element, said inlet and discharge openings being disposed behind and in front of said impact element respectively with respect to the rotational dIrection of movement of said rotatable members, a valve plate means disposed within said reservoir chamber and slidably movable on the surface of said partition member to control the flow of fluid to and from said working chamber through said openings, temperature responsive means operatively connected to said valve plate means, whereby said inlet opening is closed by said valve plate means when the atmospheric temperature is relatively low and whereby said discharge opening is closed when the atmospheric temperature is relatively high, the fluid shear medium flowing between said working chamber and said reservoir chamber in response to changes in atmospheric temperature.
Claim 3
Dependent Claim
19 words
A fluid-coupling device as claimed in claim 1 wherein said impact element is formed integrally with said partition member.
Claim 4
Dependent Claim
42 words
A fluid-coupling device as claimed in claim 1 wherein said inlet and discharge openings are formed by a circumferentially elongated slot in said partition member and said impact element is mounted on said valve plate means to be movable within said slot.
Claim 5
Dependent Claim
24 words
A fluid-coupling device according to claim 1 wherein said valve plate means is an arm extending radially of the axis of said rotatable members.
Claim 6
Dependent Claim
48 words
A fluid-coupling device as claimed in claim 1 wherein said temperature responsive means is a bimetal strip connected with said first rotatable member at its one end and connected with said valve plate means at its other end to cause the sliding movement of said valve plate means.
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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |