The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 17, 1998
Filed:
Aug. 28, 1997
Applicant:
Inventors:
Grzegorz Janiszewski, Angered, SE;
Kjell A Bergstrom, Gothenburg, SE;
Assignee:
AB Volvo, Gothenburg, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
475204 ; 475198 ; 475223 ;
Abstract
Vehicle transmission consisting of a basic gearbox (1) and a supplemental gearbox (11), comprising a planetary gear set (23) with a direct drive mode and a crawl mode, a differential (31) between two front wheel drive axles (35,36) and an angle gear set (39,41) for transmitting torque to a rear axle differential. Shifting between direct drive mode and crawl mode is achieved with an axially displaceable engagement sleeve (17) which, in direct drive mode, transmits torque from the basic gearbox directly to the differential between the front axles and in the crawl mode transmits torque to the sun gear (26) of the planetary gear set.