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. 16, 1979
Filed:
Mar. 17, 1977
Makoto Watanabe, Izumi, JP;
Kubota, Ltd., , JP;
Abstract
A work vehicle with a fluid pressure circuit system comprising an actuator pump, a work equipment mounted on the vehicle and adapted to swivel on a vertical axis, a fluid pressure circuit connected to the actuator pump to actuate the work equipment, and a drive for swivelling the whole of the work equipment. A fluid pressure circuit portion of the fluid pressure circuit is connected to the actuator pump and to the drive to actuate the drive and a control valve is provided on the fluid pressure circuit for actuating the drive. A by-pass route is connected to a supply route and a discharge route of the circuit, at a portion of the fluid pressure circuit between the control valve and the drive. The arrangement is adapted to permit part of the fluid supplied by the actuator pump to short-circuit by way of the by-pass route and smooth the operation of the work equipment.