Patent US4589533A successfully refreshed from Google Patents.
US4589533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch and brake assembly
Assignee: Individual
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Filing: 1983-03-01
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Granted: 1986-05-20
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Expires: 2003-03-01
Abstract
Abstract A fluid operated clutch and brake assembly is adapted to be connected to a motor driven flywheel and a rotatable drive shaft for a press or the like. A fluid operated piston mounted on the flywheel simultaneously engages the clutch and disengages the brake. The brake is spring biased to automatically stop rotation of the shaft when the clutch is disengaged. A first portion of the assembly mounted for rotation with the flywheel includes a fluid cylinder, a piston and a pair of spring biased clutch plates which are axially displaceable by the piston. A second portion mounted for rotation on the drive shaft includes two spline plates and a brake plate and a double splined hub, the spline plates being axially slidable on the splines of the hub. The brake plate is normally biased into frictional engagement with a stationarily mounted brake. Actuation of the piston engages the clutch plates with the spline plates and disengages the brake plate.
Inventors
- 👤 Matteo E. Del Duca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:54
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/10; F; F16; F16D; F16D67/00; F16D67/02; F16D67/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
379 words
For use with a machine having a motor, a rotatable flywheel driven by said motor and a rotatable output shaft adapted to be driven by said flywheel, a clutch and brake assembly coupled between said flywheel and said shaft, said clutch and brake assembly having an engaged state for drivingly coupling said flywheel with said shaft and a disengaged state for disengaging said flywheel from said shaft, said clutch and brake assembly comprising: a cylinder secured on said flywheel for rotation therewith and adapted to be coupled with a source of pressurized fluid; a piston reciprocally mounted within said cylinder and adapted to be longitudinally displaced along the axis of said shaft by the pressure of fluid on said piston; a spline hub assembly mounted on said shaft for rotation therewith including (1) a first plate circumscribing said shaft, (2) a spline hub secured to said shaft and defining first and second splines on opposite sides of said first plate, said first plate being secured to said hub, (3) second and third plates respectively drivingly coupled with and axially slidable on said first and second splines, said first plate being disposed between said second and third plates, brake means stationarily mounted on said machine and disposed between said first and second plates for frictionally engaging said second plate; means for normally biasing said second plate into frictional engagement with said brake means when said clutch assembly is in said disengaged state thereof to prevent rotation of said shaft; clutch plate means driven by longitudinal displacement of said piston for frictionally coupling said piston with said spline hub assembly when said clutch assembly is in said engaged state thereof to drivingly connect said flywheel with said shaft; brake release means driven by longitudinal displacement of said piston for defeating said biasing means and disengaging said brake means from said second plate when said clutch assembly is in said engaged state; and means for mounting said clutch plate means for rotation with said cylinder and for longitudinal displacement relative to said cylinder, said mounting means including a plurality of guide pins slidably mounted on said cylinder, means for normally biasing said guide pins to slide relative to said cylinder and means for securing said clutch plate means on said guide pins.
Claim 2
Dependent Claim
379 words
For use with a machine having a motor, a rotatable flywheel driven by said motor and a rotatable output shaft adapted to be driven by said flywheel, a clutch and brake assembly coupled between said flywheel and said shaft, said clutch and brake assembly having an engaged state for drivingly coupling said flywheel with said shaft and a disengaged state for disengaging said flywheel from said shaft, said clutch and brake assembly comprising: a cylinder secured on said flywheel for rotation therewith and adapted to be coupled with a source of pressurized fluid; a piston reciprocally mounted within said cylinder and adapted to be longitudinally displaced along the axis of said shaft by the pressure of fluid on said piston; a spline hub assembly mounted on said shaft for rotation therewith including (1) a first plate circumscribing said shaft, (2) a spline hub secured to said shaft and defining first and second splines on opposite sides of said first plate, said first plate being secured to said hub, (3) second and third plates respectively drivingly coupled with and axially slidable on said first and second splines, said first plate being disposed between said second and third plates, brake means stationarily mounted on said machine and disposed between said first and second plates for frictionally engaging said second plate; means for normally biasing said second plate into frictional engagement with said brake means when said clutch assembly is in said disengaged state thereof to prevent rotation of said shaft; clutch plate means driven by longitudinal displacement of said piston for frictionally coupling said piston with said spline hub assembly when said clutch assembly is in said engaged state thereof to drivingly connect said flywheel with said shaft; brake release means driven by longitudinal displacement of said piston for defeating said biasing means and disengaging said brake means from said second plate when said clutch assembly is in said engaged state; and means for mounting said clutch plate means for rotation with said cylinder and for longitudinal displacement relative to said cylinder, said mounting means including a plurality of guide pins slidably mounted on said cylinder, means for normally biasing said guide pins to slide relative to said cylinder and means for securing said clutch plate means on said guide pins.
Claim 3
Dependent Claim
71 words
The clutch and brake assembly of claim 1, wherein said clutch plate means includes first and second clutch plates, said first clutch plate being disposed between said piston and said third plate and including surface areas for frictionally engaging said third plate, said second clutch plate being disposed between said first and third plates and including surface areas on opposite sides thereof for respectively frictionally engaging said first and third plates.
Claim 4
Dependent Claim
32 words
The clutch and brake assembly of claim 2, wherein said securing means includes a plurality of bushings respectively secured to said first and second clutch plates and sleeved over said guide pins.
Claim 5
Dependent Claim
334 words
For use with a machine having drive means including a motor and a rotatable output shaft adapted to be rotated by said drive means, a combination clutch and brake apparatus actuable from a first state wherein said clutch is disengaged and said brake is engaged to prevent rotation of said shaft to a second state in which said clutch is engaged and said brake is disengaged to allow said shaft to be rotated by said drive means, said apparatus comprising: a first portion secured to said drive means for rotation by the latter, including (1) a motor member having a drive member axially shiftable relative to said shaft, (2) first and second spaced apart clutch plates, (3) means for mounting said first and second clutch plates for axial movement relative to said shaft, at least one of said clutch plates being drivingly connected with said drive member, said mounting means including a plurality of guide pins slidably mounted on said motor member, said first and second clutch plates being mounted on said guide pins; a second portion stationarily mounted on said machine and having frictionally engagable surfaces; a third portion mounted on said shaft for rotation therewith, including (1) a hub secured to said shaft, (2) a first plate secured to said hub and adapted to frictionally engage said second clutch plate when said apparatus is in said second state thereof to drivingly couple said drive means with said third portion, (3) a second plate including surface areas adapted to frictionally engage said second portion and being axially slidable on said hub between a first position engaging said second portion when said apparatus is in said first state thereof to prevent rotation of said third portion and a second position disengaged from said second portion when said apparatus is in said second state thereof to allow rotation of said third portion with said first portion; and means extending through said first plate for shifting said second plate between said first and second positions thereof.
Claim 6
Dependent Claim
334 words
For use with a machine having drive means including a motor and a rotatable output shaft adapted to be rotated by said drive means, a combination clutch and brake apparatus actuable from a first state wherein said clutch is disengaged and said brake is engaged to prevent rotation of said shaft to a second state in which said clutch is engaged and said brake is disengaged to allow said shaft to be rotated by said drive means, said apparatus comprising: a first portion secured to said drive means for rotation by the latter, including (1) a motor member having a drive member axially shiftable relative to said shaft, (2) first and second spaced apart clutch plates, (3) means for mounting said first and second clutch plates for axial movement relative to said shaft, at least one of said clutch plates being drivingly connected with said drive member, said mounting means including a plurality of guide pins slidably mounted on said motor member, said first and second clutch plates being mounted on said guide pins; a second portion stationarily mounted on said machine and having frictionally engagable surfaces; a third portion mounted on said shaft for rotation therewith, including (1) a hub secured to said shaft, (2) a first plate secured to said hub and adapted to frictionally engage said second clutch plate when said apparatus is in said second state thereof to drivingly couple said drive means with said third portion, (3) a second plate including surface areas adapted to frictionally engage said second portion and being axially slidable on said hub between a first position engaging said second portion when said apparatus is in said first state thereof to prevent rotation of said third portion and a second position disengaged from said second portion when said apparatus is in said second state thereof to allow rotation of said third portion with said first portion; and means extending through said first plate for shifting said second plate between said first and second positions thereof.
Claim 7
Dependent Claim
21 words
The apparatus of claim 4, including means for biasing said first and second clutch plates to slide relative to said cylinder.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |