Patent US5102720A successfully refreshed from Google Patents.
US3886813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential
Assignee: Eaton Corp
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Filing: 1974-04-10
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Granted: 1975-06-03
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Expires: 1994-04-10
Abstract
Abstract A differential structure includes a differential case defining a differential gear chamber. The differential gearing is located in the gear chamber and includes a pair of side gears and pinion gears meshing with the side gears and which pinion gears are rotatable with the case. The side gears are output gears and a pair of output drives are connected with the respective side gears for driving respective loads. A lockup clutch mechanism is associated with one of the side gears for retarding rotation of the side gear relative to the case in response to a predetermined degree of relative rotation therebetween. The differential is constructed to deactivate the lockup clutch upon a predetermined torque being applied to the differential due to windup of the output drives.
Inventors
- 👤 Jerry F Baremor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:03
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/22; F16H48/06; F16H48/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
Apparatus comprising a pair of output drives, a differential interposed between said output drives and enabling differential rotation to occur between said output drives upon different loads being applied thereto, said differential comprising differential gearing drivingly connected with said output drives and including gears which are relatively rotatable to provide said differential rotation of said outputs, and means responsive to a predetermined degree of differEntiating action of said differential gearing to lock up said differential gearing and releasable upon a predetermined torque being applied to said differential gearing due to windup of said output drives when said differential gearing is locked up.
Claim 2
Dependent Claim
102 words
Apparatus comprising a pair of output drives, a differential interposed between said output drives and enabling differential rotation to occur between said output drives upon different loads being applied thereto, said differential comprising differential gearing drivingly connected with said output drives and including gears which are relatively rotatable to provide said differential rotation of said outputs, and means responsive to a predetermined degree of differEntiating action of said differential gearing to lock up said differential gearing and releasable upon a predetermined torque being applied to said differential gearing due to windup of said output drives when said differential gearing is locked up.
Claim 3
Dependent Claim
102 words
Apparatus comprising a pair of output drives, a differential interposed between said output drives and enabling differential rotation to occur between said output drives upon different loads being applied thereto, said differential comprising differential gearing drivingly connected with said output drives and including gears which are relatively rotatable to provide said differential rotation of said outputs, and means responsive to a predetermined degree of differEntiating action of said differential gearing to lock up said differential gearing and releasable upon a predetermined torque being applied to said differential gearing due to windup of said output drives when said differential gearing is locked up.
Claim 4
Dependent Claim
102 words
Apparatus comprising a pair of output drives, a differential interposed between said output drives and enabling differential rotation to occur between said output drives upon different loads being applied thereto, said differential comprising differential gearing drivingly connected with said output drives and including gears which are relatively rotatable to provide said differential rotation of said outputs, and means responsive to a predetermined degree of differEntiating action of said differential gearing to lock up said differential gearing and releasable upon a predetermined torque being applied to said differential gearing due to windup of said output drives when said differential gearing is locked up.
Claim 5
Dependent Claim
50 words
Apparatus as defined in claim 1 wherein said differential includes a gear case, said differential gearing comprises a pair of side gears and pinion gears meshing therewith and said lockup means comprises a disc pack cooperable to effect lockup of one of said side gears to the differential gear case.
Claim 6
Dependent Claim
66 words
Apparatus as defined in claim 2 further including a cam member interposed between the disc pack and the side gear and which is axially movable relative to the side gear to effect loading of the disc pack upon relative rotation between said side gear and said cam member, and further including an actuator means for effecting relative rotation between said cam member and said side gear.
Claim 7
Dependent Claim
40 words
Apparatus as defined in claim 3 wherein said disc pack and said cam member are biased forwardly toward the side gear by a suitable spring means against which the cam member is moved to effect loading of the disc pack.
Claim 8
Dependent Claim
102 words
Apparatus as defined in claim 4 wherein said cam member and said side gear have inclined teeth on the facing and engaging sides thereof and upon relative rotation therebetween the teeth effect a camming action for camming the cam member rearwardly relative to the side gear, and wherein said spring means enables further camming action to occur due to the torque applied to the differential by said outputs to cause the peaks of the teeth on the side gear and cam member to pass over each other to thereby provide for a release of the lockup upon said predetermined torque being experienced.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |