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:
Mar. 09, 1993
Filed:
Jul. 22, 1991
Applicant:
Inventor:
Dale I Havens, Addison, MI (US);
Assignee:
Tecumseh Products Company, Tecumseh, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
7460 / ; 7460 / ; 60487 ;
Abstract
A hydrostatic transmission includes a fan and pulley, attached to the input drive shaft, the fan and pulley being connected by a coupling device and including aligned air flow holes for drawing the air into the fan. The fan has several types of blades for directing the inflowing air downwardly and outwardly and in cooperation with radially curved fins cast in the transmission casing directly below the fan such that the helical air flow pattern developed by the fan and pulley is helically drawn over the transmission to effect efficient cooling thereof with fresh cool air.