US3743070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch with brake having torsional resilience
Assignee: Eaton Corp
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Filing: 1971-12-10
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Granted: 1973-07-03
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Expires: 1991-12-10
Abstract
Abstract A transmission is disclosed having a clutch brake for holding the transmission main shaft from rotation when the transmission main clutch is disengaged. The clutch brake includes a friction disc rotatable about the axis of te main shaft and interleaved between a pair of friction discs connected to the housing. A tab extending from the rotatable friction disc may engage the main shaft so that the shaft may not rotate when the rotatable friction disc is braked, but the tab does permit a certain amount of angular pivotal movement between the shaft and the rotatable friction disc. A torsional coiled wire spring resiliently connects the rotatable friction disc with the main shaft and biases the shaft toward a centered position relative to the disc tab so that the shaft may pivot slightly in either direction while brake from rotation to permit the various geared and splined components of the transmission to be shifted into engagement with their mating components regardless of the angular position at which the clutch brake stops the main shaft.
Inventors
- 👤 W Howard
- 👤 R Ratliff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:34
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/08; F16D25/082; F16D25/087
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
201 words
A transmission comprising: a housing, a rotatable torque input member, a rotatable torque receiving member mounted for rotation within said housing, main clutch means for selectively connecting said torque receiving member to be rotated by said torque input member, gear means carried by said torque receiving member for selective mating engagement with complementary gear means within said housing, brake means for braking the rotation of said torque receiving member upon operation of said main clutch means and comprising, a stationary friction member connected to said housing, a rotatable friction member adjacent said stationary friction member and rotatable about the axis of rotation of said torque receiving member, and means for resiliently connecting said rotatable friction member for rotation with said torque receiving member when the stationary and rotatable friction members are disengaged and for limited bidirectional rotation of the rotatable friction member relative to the torque receiving member when the stationary and rotatable friction members are engaged whereby said gear means and complementary gear means may operatively engage one another irrespective of the braked position of said torque receiving means, said resilient means also bidirectionally biasing said torque receiving member toward a selected angular position relative to said rotatable friction member.
Claim 2
Dependent Claim
201 words
A transmission comprising: a housing, a rotatable torque input member, a rotatable torque receiving member mounted for rotation within said housing, main clutch means for selectively connecting said torque receiving member to be rotated by said torque input member, gear means carried by said torque receiving member for selective mating engagement with complementary gear means within said housing, brake means for braking the rotation of said torque receiving member upon operation of said main clutch means and comprising, a stationary friction member connected to said housing, a rotatable friction member adjacent said stationary friction member and rotatable about the axis of rotation of said torque receiving member, and means for resiliently connecting said rotatable friction member for rotation with said torque receiving member when the stationary and rotatable friction members are disengaged and for limited bidirectional rotation of the rotatable friction member relative to the torque receiving member when the stationary and rotatable friction members are engaged whereby said gear means and complementary gear means may operatively engage one another irrespective of the braked position of said torque receiving means, said resilient means also bidirectionally biasing said torque receiving member toward a selected angular position relative to said rotatable friction member.
Claim 3
Dependent Claim
52 words
A transmission as set forth in claim 1 also including piston means and means for supplying a selected pressure to act upon said piston, said piston means urging one of said friction members into braking frictional engagement with the other said friction member when said selected pressure acts upon said piston means.
Claim 4
Dependent Claim
33 words
A transmission as set forth in claim 2 wherein said piston means includes a plurality of cylindrical bores disposed axially in said housing and a cylindrical piston slidably disposed within each said bore.
Claim 5
Dependent Claim
61 words
A transmission as set forth in claim 2 including main clutch disengaging means for disconnecting said torque receiving member from rotation with said torque input member, and wherein said means for supplying a selected pressure is responsive to said main clutch disengaging means so that said selected pressure is supplied to said piston means only when said main clutch is disengaged.
Claim 6
Dependent Claim
112 words
A transmission as set forth in claim 1 and including: a pump, main clutch disengaging means for selectively disconnecting said torque receiving member from rotation with said torque input member when said clutch disengaging means is acted upon by a first selected pressure, piston means for urging one of said friction members into braking frictional engagement with the other said friction member when said piston means is acted upon by a second pressure selected relative to said first selected pressure, fluid passage means connecting said pump with said clutch disengaging means and with said piston means, and valve means for varying the pressure supplied by said pump to said clutch disengaging means.
Claim 7
Dependent Claim
33 words
A transmission as set forth in claim 5 wherein said piston means includes a plurality of cylindrical bores disposed axially in said housing and a cylindrical piston slidably disposed within each said bore.
Claim 8
Dependent Claim
28 words
A transmission as set forth in claim 1 and including means for limiting the angular pivotal movement of said torque receiving member relative to said rotatable friction member.
Claim 9
Dependent Claim
33 words
A transmission as set forth in claim 7 wherein said limiting means includes a surface on said rotatable friction member adapted to abut a surface connected for rotation with said torque receiving member.
Claim 10
Dependent Claim
28 words
A transmission as set forth in claim 2 and including means for limiting the angular pivotal movement of said torque receiving member relative to said rotatable friction member.
Claim 11
Dependent Claim
28 words
A transmission as set forth in claim 5 and including means for limiting the angular pivotal movement of said torque receiving member relative to said rotatable friction member.
Claim 12
Dependent Claim
33 words
A transmission as set forth in claim 10 wherein said limiting means includes a surface on said rotatable friction member adapted to abut a surface connected for rotation with said torque receiving member.
Claim 13
Dependent Claim
30 words
A transmission as set forth in claim 5 wherein said resilient means is a torsional coiled wire spring connected to said rotatable friction member and to said torque receiving member.
Claim 14
Dependent Claim
33 words
A transmission as set forth in claim 11 wherein said limiting means includes a surface on said rotatable friction member adapted to abut a surface connected for rotation with said torque receiving member.
Claim 15
Dependent Claim
136 words
A transmission comprising: a housing, a rotatable torque input member, a rotatable torque receiving member mounted for rotation within said housing, main clutch means for selectively connecting said torque receiving member to be rotated by said torque input member, a stationary friction member connected to said housing, a rotatable friction member adjacent said stationary friction member and rotatable about the axis of rotation of said torque receiving member, and means connecting said rotatable friction member for rotation with said torque receiving member comprising a tab on one of said members loosely received in a slot in the other of said members, resilient means connected to normally center said tab in said slot, and, said connecting means permitting a selected amount of limited bi-directional angular pivotal movement between said rotatable friction member and said torque receiving member.
Claim 16
Dependent Claim
136 words
A transmission comprising: a housing, a rotatable torque input member, a rotatable torque receiving member mounted for rotation within said housing, main clutch means for selectively connecting said torque receiving member to be rotated by said torque input member, a stationary friction member connected to said housing, a rotatable friction member adjacent said stationary friction member and rotatable about the axis of rotation of said torque receiving member, and means connecting said rotatable friction member for rotation with said torque receiving member comprising a tab on one of said members loosely received in a slot in the other of said members, resilient means connected to normally center said tab in said slot, and, said connecting means permitting a selected amount of limited bi-directional angular pivotal movement between said rotatable friction member and said torque receiving member.
Claim 17
Dependent Claim
33 words
A transmission as set forth in claim 14 wherein said connecting means includes a surface on said rotatable friction member adapted to abut a surface connected for rotation with said torque receiving member.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |