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:
May. 18, 1982
Filed:
Feb. 15, 1980
Kiyozumi Fukui, Gifu, JP;
Teijin Seiki Company Limited, Osaka, JP;
Abstract
A drive controlling mechanism comprises an operative block assembly securely connected with a motor housing accommodating therein a hydraulic motor and rotatably receiving a rotatary shaft of the hydraulic motor; a parking brake arrangement connected with the operative block assembly to brake and release a rotary shaft; a control valve arrangement provided to control of the hydraulic motor and actuation of the parking brake arrangement; a pair of inlet-outlet passages connecting the actuation ports of the hydraulic motor and the control valve arrangement; a control conduit arrangement having a shuttle valve permiting fluid under pressure to be introduced into the parking brake arrangement from the control valve arrangement and to be discharged from the parking brake arrangement; and a drain passage arrangement for discharging fluid under pressure from the parking brake arrangement through the shuttle valve to a drain chamber defined between the motor housing and the hydraulic motor.