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:
Jan. 11, 1983
Filed:
Oct. 08, 1980
Amos H Ramquist, Redmond, WA (US);
Other;
Abstract
The mechanism comprises a hydraulic circuit having a power driven pump; a reservoir for hydraulic fluid, and a motor for each wheel or two or more coaxial wheels of the carriage. The motor has a movable driven member therein and ports for the infeed and outfeed of fluid therethrough. There are connecting means between the pump, the reservoir and the ports whereby the fluid can be circulated through the motor to drive the driven member thereof. There is also a connection between the driven member of the motor and the corresponding wheel or wheels whereby the motion of one is directly transmitted to the other and vice versa, depending on which is being driven at faster speed. In addition, there are means in the hydraulic circuit for varying the speed of the driven member, and means whereby the vehicle operator can control the speed varying means to adjust the rotational speed of the respective wheel or wheels of the carriage in relation to the speed of the vehicle.