Patent US3749217A successfully refreshed from Google Patents.
US3749217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid clutch with self-contained pump
Assignee: Lipe Corp
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Filing: 1971-12-15
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Granted: 1973-07-31
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Expires: 1991-12-15
Abstract
Abstract A fluid clutch having a fluid pump contained within the clutch assembly. The pump is fixed against axial or rotational movement and is disposed in the assembly in concentric relation to the output shaft. The pump is driven by a direct connection from the clutch input means and operates whether the clutch friction members are engaged or not. The pump encircles a pull mechanism sleeve that is interposed between it and the output shaft, the sleeve being movable axially entirely independently of the pump to disengage the clutch friction members.
Inventors
- 👤 C Bush
- 👤 R Root
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:50
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/72
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
91 words
In a friction clutch assembly having power input means, a driven shaft and means for normally effecting a driving connection between the input means and shaft: means including a nonrotatable sleeve member operatively connected to the clutch and axially slidably mounted on the driven shaft for disengaging the driving connection, a pump encircling the nonrotatable sleeve member, the pump including a housing fixed against axial and rotational movement and rotatable pumping means in the housing, and means directly connecting the power input means with the pumping means to drive the latter.
Claim 2
Dependent Claim
91 words
In a friction clutch assembly having power input means, a driven shaft and means for normally effecting a driving connection between the input means and shaft: means including a nonrotatable sleeve member operatively connected to the clutch and axially slidably mounted on the driven shaft for disengaging the driving connection, a pump encircling the nonrotatable sleeve member, the pump including a housing fixed against axial and rotational movement and rotatable pumping means in the housing, and means directly connecting the power input means with the pumping means to drive the latter.
Claim 3
Dependent Claim
29 words
A clutch assembly as defined in claim 1 together with an intake conduit in the clutch for the pump, the pump housing being fixed against movement by the conduit.
Claim 4
Dependent Claim
155 words
In a friction clutch assembly having power input means, a driven shaft and normally engaged friction members for effecting a driving connection between the input means and shaft: a nonrotatable sleeve member mounted on the driven shaft for disengaging the friction members, the sleeve member being operable upon axial movement away from the friction members to effect the disengagement, a fluid pump disposed radially outwardly from the nonrotatable sleeve member in concentric relation thereto, the pump including a housing fixed against axial and rotational movement and rotatable pumping means in the housing, and means directly connecting the power input means with the pumping means to drive the latter, the last-named means comprising a plate and hub member disposed radially outwardly from the nonrotatable sleeve member in concentric relation thereto, the plate being secured to the power input means and the hub projecting into the pump housing and being operably connected to the pumping means therein.
Claim 5
Dependent Claim
155 words
In a friction clutch assembly having power input means, a driven shaft and normally engaged friction members for effecting a driving connection between the input means and shaft: a nonrotatable sleeve member mounted on the driven shaft for disengaging the friction members, the sleeve member being operable upon axial movement away from the friction members to effect the disengagement, a fluid pump disposed radially outwardly from the nonrotatable sleeve member in concentric relation thereto, the pump including a housing fixed against axial and rotational movement and rotatable pumping means in the housing, and means directly connecting the power input means with the pumping means to drive the latter, the last-named means comprising a plate and hub member disposed radially outwardly from the nonrotatable sleeve member in concentric relation thereto, the plate being secured to the power input means and the hub projecting into the pump housing and being operably connected to the pumping means therein.
Claim 6
Dependent Claim
15 words
A clUtch assembly as defined in claim 3 wherein the pump is a gerotor pump.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |