Patent ID: 7350630

Claim:
A drive apparatus comprising: a housing; first and second axles mounted in the housing; a ring gear located within the housing; a first brake clutch mechanism located within the housing and comprising: a first drive clutch assembly for selectively coupling the first axle to the ring gear; a first brake assembly for selectively coupling the first axle to the housing; a first cam block located between the first drive clutch assembly and the first brake assembly and movable with respect to the housing, wherein the first cam block engages the first drive clutch assembly when the first cam block is moved in a first direction, thereby coupling the first axle to the ring gear, and wherein the first cam block engages the first brake assembly when the first cam block is moved in a second direction, thereby coupling the first axle to the housing; and a first cam shaft rotatably mounted in the first cam block and extending out of the housing; and a second brake clutch mechanism located within the housing and comprising: a second drive clutch assembly for selectively coupling the second axle to the ring gear; a second brake assembly for selectively coupling the second axle to the housing; a second cam block located between the second drive clutch assembly and the second brake assembly and movable with respect to the housing, wherein the second cam block engages the second drive clutch assembly when the second cam block is moved in a first direction, thereby coupling the second axle to the ring gear, and wherein the second cam block engages the second brake assembly when the second cam block is moved in a second direction, thereby coupling the second axle to the housing; and a second cam shaft rotatably mounted in the second cam block and extending out of the housing.