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:
Aug. 15, 1989
Filed:
Jan. 21, 1988
Applicant:
Inventor:
Dusan J Hvolka, Salt Lake City, UT (US);
Assignee:
DJH Engineering Center, Inc., Salt Lake City, UT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ; F16H / ;
U.S. Cl.
CPC ...
74804 ; 7456 / ;
Abstract
The invention is a variable speed transmission for adjusting the output of a drive shaft. It comprises a journal mounted rotatable casing with an internal cyclical periodic track selectively pushed by a plurality of reciprocating push rods activated by a variably extendable cam mounted to a drive shaft. The torque ratios are directly proportional to the degree the push rods are extended by the extendable cam.