Abstract: A two speed gear box including a casing that is rotatably supported by a central planetary gear carrier. The two speed gear box further includes a central mounted planetary gear assembly with a ring gear controlled by a low speed clutch and a sun gear controlled by a high speed clutch that cooperate to provide three modes of operation for the output shaft with respect to a drive axle. The three modes of operation include a neutral mode, a high speed mode and a low speed mode. Selective engagement and disengagement of the low speed and high speed clutches provide for selection of one of the modes of operation.
Type:
Grant
Filed:
August 30, 2002
Date of Patent:
August 30, 2005
Assignee:
Darwin Industries, Inc.
Inventors:
Dusan J. Hvolka, Steve G. Pitts, Cary D. Pitts
Abstract: A two speed gear box including a casing that is rotatably supported by a central planetary gear carrier. The two speed gear box further includes a central mounted planetary gear assembly with a ring gear controlled by a low speed clutch and a sun gear controlled by a high speed clutch that cooperate to provide three modes of operation for the output shaft with respect to a drive axle. The three modes of operation include a neutral mode, a high speed mode and a low speed mode. Selective engagement and disengagement of the low speed and high speed clutches provide for selection of one of the modes of operation.
Type:
Application
Filed:
August 30, 2002
Publication date:
December 30, 2004
Applicant:
Darwin Industries, Inc.
Inventors:
Dusan J. Hvolka, Steve G. Pitts, Cary D. Pitts