Patent ID: 8839933

Claim:
An apparatus comprising: a PTO clutch assembly arrangement, comprising: an input end housing section, input twin ball bearings located in the input end housing section, a double lip seal located in the input end housing section, an output end housing section, output twin ball bearings located in the output end housing section, a one-way seal located in the output end housing section, an intermediate housing section, wherein the intermediate housing section is configured to hold lubrication fluid, wherein at least a part of the intermediate housing section extends intermediate the input end housing section and the output end housing section, angular contact ball bearings located in the intermediate housing section, a disc pack, a pressure plate, and a backplate located in the intermediate housing section, wherein the disc pack is located intermediate the pressure plate and the backplate, wherein the disc pack includes at least one friction disc and at least one separator disc, wherein the backplate includes an annular recess, an ion nitride-hardened rotatable shaft, wherein the shaft is structurally configured toward marine environment usage, wherein the shaft includes a shaft input end, a shaft output end, and an axis, wherein the shaft axially extends inside both the input end housing section and the intermediate housing section, wherein the shaft is rotationally guided by the input twin ball bearings, wherein the shaft engages the double lip seal at two axially spaced positions, wherein the shaft is rotationally guided by the angular contact ball bearings, wherein the shaft is connected to the at least one separator disc, a rotatable drive cup, wherein the drive cup is connected to the at least one friction disc, wherein the drive cup is rotationally guided by the output twin ball bearings, wherein the drive cup engages the one-way seal enabling the one-way seal to assist in preventing lubrication fluid leakage, wherein the drive cup includes a tooth bore, wherein the drive cup includes a plug at one end of the tooth bore, a piston movable in an axial direction, wherein activation of the piston is operative to cause the shaft to impart rotation to the drive cup through engagement between the at least one friction disc and the at least one separator disc, a lock arrangement fastening the shaft output end to the backplate, wherein the lock arrangement includes a threaded fastener, an end washer, and a locking washer, wherein the threaded fastener includes a fastener head, wherein the locking washer is located axially intermediate the fastener head and the end washer, wherein the end washer includes an axially extending annular projection configured to engagingly rest in the annular recess, wherein rotational tightening of the fastener head causes the locking washer to engagingly rotate the end washer relative to the backplate.