# US 11,078,058 B2 · Overload clutch assembly for hoist > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,078,058 B2 - Document ID: US11078058B2 - Status: Granted - Kind: B2 - Application number: 16/368,435 - Filed: 2019-03-28 - Published: 2020-10-01 - Granted: 2021-08-03 - Earliest claimed: 2019-03-28 - Assignees: Goodrich Corporation - Applicants: Goodrich Corporation - Inventors: Bejan Maghsoodi - Web page: https://patentgrep.com/patent/US11078058B2 ## CPC - B66D 5/14: embodying discs - B64D 1/02: Dropping, ejecting, or releasing articles (jettisonable fuel reservoirs B64D37/12) - B66D 1/14: Power transmissions between power sources and drums or barrels {(including brakes, one-way brakes, one-way clutches, clutches activated alternately with brakes, fixed ratio gearing unless otherwise provided for in B66D1/16 - B66D1/24)} - B66D 1/22: Planetary or differential gearings (for actuating grab buckets B66D1/70 ){, i.e. with planet gears having movable axes of rotation} - B66D 3/22: with variable-speed gearings between driving motor and drum or barrel - F16D 7/027: {with multiple lamellae} - F16D 15/00: Clutches with wedging balls or rollers or with other wedgeable separate clutching members (freewheels, freewheel clutches F16D41/00) - F16D 43/30: Systems of a plurality of automatic clutches - F16H 1/28: with gears having orbital motion - F16D 2121/14: Mechanical - F16D 2125/38: with plural cam or ball-ramp mechanisms arranged concentrically with the brake rotor axis - F16D 2125/50: with parallel non-stationary axes, e.g. planetary gearing - B66D: CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS (winding or unwinding ropes or cables for feeding or storage purposes B65H; rope or cable winding or unwinding mechanisms for lifts B66B) - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - F16H: GEARING ## Abstract A clutch assembly for a hoist may comprise a first epicyclic gear train and a first set of friction disks rotationally coupled to the first epicyclic gear train. A second set of friction disks may be in operable communication with the first set of friction disks. Torque may be transferred between the first set of friction disks and the second set of friction disks by means of a friction coupling between the first set of friction disks and the second set of friction disks. A pinion may be rotationally coupled to the second set of friction disks. A splined portion of the pinion may form an output of the clutch assembly. ## Claims ### Claim 1 A clutch assembly for a hoist, comprising: a first epicyclic gear train including a stationary ring gear, a plurality of star gears configured to rotate about an inner circumference of the stationary ring gear, and a carrier coupled to the plurality of star gears; a first set of friction disks rotationally coupled to the first epicyclic gear train; a second set of friction disks in operable communication with the first set of friction disks, wherein torque is transferred between the first set of friction disks and the second set of friction disks via a friction coupling between the first set of friction disks and the second set of friction disks; a basket configured to transfer toque to the first set of friction disks; a ball ramp assembly rotationally coupling the carrier of the first epicyclic gear train to the basket; and a pinion rotationally coupled to the second set of friction disks, wherein a splined portion of the pinion forms an output of the clutch assembly. ### Claim 2 (depends on 1) The clutch assembly of claim 1, wherein the carrier defines an auxiliary gear. ### Claim 3 (depends on 2) The clutch assembly of claim 2, wherein a material of the carrier is different from a material of the plurality of star gears. ### Claim 4 (depends on 1) The clutch assembly of claim 1, further comprising a second epicyclic gear train rotationally coupled to the pinion, wherein the pinion forms a sun gear of the second epicyclic gear train. ### Claim 5 A hoist, comprising: a cable drum; a motor configured to rotationally drive the cable drum; a drive train rotationally coupled to the cable drum; and a clutch assembly rotationally coupled between the drive train and the motor, the clutch assembly comprising: a first epicyclic gear train rotationally coupled to the motor; a first set of friction disks rotationally coupled to the first epicyclic gear train; a second set of friction disks in operable communication with the first set of friction disks, wherein torque is transferred between the first set of friction disks and the second set of friction disks via a friction coupling between the first set of friction disks and the second set of friction disks; and a pinion rotationally coupled to the second set of friction disks and the drive train. ### Claim 6 (depends on 5) The hoist of claim 5, wherein the first epicyclic gear train comprises: a stationary ring gear; a plurality of star gears configured to rotate about an inner circumference of the stationary ring gear; a carrier coupled to the plurality of star gears; and a sun gear intermeshed with the plurality of star gears. ### Claim 7 (depends on 6) The hoist of claim 6, further comprising a housing located around the clutch assembly, wherein the stationary ring gear is coupled to at least one of the housing or the cable drum. ### Claim 8 (depends on 7) The hoist of claim 7, further comprising a shaft rotationally coupled to the motor and the sun gear. ### Claim 9 (depends on 8) The hoist of claim 8, further comprising a basket rotationally coupled to the carrier and the first set of friction disks. ### Claim 10 (depends on 9) The hoist of claim 9, further comprising a ball ramp assembly rotationally coupling the carrier to the basket. ### Claim 11 (depends on 10) The hoist of claim 10, wherein a material of the carrier is different from a material of the plurality of star gears. ### Claim 12 (depends on 5) The hoist of claim 5, wherein the drive train comprises a second epicyclic gear train, and wherein the pinion forms a sun gear of the second epicyclic gear train. ### Claim 13 A hoist for an aircraft, comprising: a cable drum; a motor configured to rotationally drive the cable drum; a clutch assembly in operable communication with the cable drum and the motor, the clutch assembly comprising: a first epicyclic gear train rotationally coupled to the motor, the first epicyclic gear train including a stationary ring gear, a plurality of star gears configured to rotate about an inner circumference of the stationary ring gear, a first sun gear intermeshed with the plurality of star gears, and a carrier coupled to the plurality of star gears, wherein the motor is configured to rotationally drive the first sun gear; a first set of friction disks rotationally coupled to the first epicyclic gear train; a second set of friction disks in operable communication with the first set of friction disks with torque being transferred between the first set of friction disks and the second set of friction disks via a friction coupling between the first set of friction disks and the second set of friction disks, wherein the second set of friction disks is rotationally coupled to the cable drum; and a pinion intermeshed with the second set of friction disks; and a second epicyclic gear train rotationally coupled to the clutch assembly, wherein the pinion forms a sun gear of the second epicyclic gear train. ### Claim 14 (depends on 13) The hoist of claim 13, wherein at least a portion of the clutch assembly is located within the cable drum. ### Claim 15 (depends on 13) The hoist of claim 13, wherein the carrier defines an auxiliary gear. ### Claim 16 (depends on 13) The hoist of claim 13, wherein a material of the carrier is different from a material of the plurality of star gears. ### Claim 17 (depends on 13) The hoist of claim 13, wherein the clutch assembly further includes: a basket rotationally coupled to the first set of friction disks; and a ball ramp assembly rotationally coupling the carrier to the basket.