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:
Feb. 28, 1989
Filed:
Sep. 25, 1987
Applicant:
Inventor:
John M Loeffler, Toledo, OH (US);
Assignee:
Dana Corporation, Toledo, OH (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ; F16H / ;
U.S. Cl.
CPC ...
74745 ; 74331 ; 74333 ;
Abstract
A multi-speed twin countershaft transmission having a floating main shaft with no internal or external bearings or other support device at or adjacent its ends. The main shaft is positioned only by gears carrying the torque. At the forward end of the main shaft, positioning and support takes place by engagement of the main shaft gear to the main shaft and the two counter shaft gears driving it. Positioning and support at the output end of the main shaft is obtained by the self positioning of a range drive gear on the main shaft between two input driven gears on a pair of range countershafts. A true 50-50 torque split is obtained.