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:
Sep. 24, 2002
Filed:
Nov. 16, 2000
Applicant:
Inventor:
Edward L. Simonds, Adel, IA (US);
Assignee:
Thermal Dynamics, Inc., Adel, IA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L 3/302 ;
U.S. Cl.
CPC ...
F01L 3/302 ;
Abstract
A motor comprising a shaft with four racks which translate linear actuation of the racks to rotational motion of the shaft through pinions secured to sprag clutch assemblies. Motion of the rack assemblies is preferably offset to maintain a substantially constant rotation of the shaft during operation of the motor. The motor uses a pair of primary fluid expansion chambers to generate linear actuation of a first pair of racks, and a pair of secondary expansion chambers to generate linear actuation of the remaining racks.