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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.:

US 4691795 B1

PDFFull Text
Date of Patent:
Sep. 08, 1987

Filed:

Jun. 18, 1985

Vehicle fluidic drive circuit

Applicant:
Inventors:

Donald T Wehmeyer, Woodinville, WA (US);

Ronald W Barnhart, Elmhurst, IL (US);

Assignee:

Economy Engineering, Inc., Bensenville, IL (US);

Attorney:

White; Douglas B.

Primary Examiner:

John J Love

Assistant Examiner:

Mitchell J Hill

Int. Cl.
CPC ...
B62D / ; F16D / ;
U.S. Cl.
CPC ...
180-648 ; 91443 ; 91514 ; 91532 ; 137100 ; 13759616 ; 13762564 ; 137884 ; 180197 ; 180306 ;
Abstract

There is provided an improved fluidic drive circuit for a fluid powered vehicle arranged to limit flow to an unloaded drive wheel. A restricting orifice is mounted in parallel with a pressure sensitive control valve to provide fluid power to the motor. A trickle flow is provided through the restricting orifice to maintain a minimum pressure to the fluid motor. The control valve, sensitive to pressure at the fluid motor, provides full flow only when the pressure in the fluid motor is sufficient.

Find Patent Forward Citations

Wehmeyer, Donald. (1987). Vehicle fluidic drive circuit (U.S. Patent No. 4691795). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4691795

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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