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:
Nov. 25, 1980
Filed:
Jan. 03, 1978
Takayoshi Uno, deceased, late of Osaka, JP;
by Takaaki Uno, heir, Nara, JP;
by Yoshishige Uno, heir, Tokyo, JP;
by Hiroyoshi Uno, heir, Yao, JP;
Takashi Ida, Suita, JP;
Minoru Onaka, Osaka, JP;
Hayato Shigeta, Osaka, JP;
Tomoe Technical Research Company, Osaka, JP;
Abstract
A driving device for opening and closing a valve comprises a cylindrical body, an actuating cylinder, a spindle, a piston member, a transparent plate and a stop means for controlling the rotation of the spindle. Said stop means comprises a ring gear, a spring and a stop bar having a wedge-shaped head, said wedge head having a pair of surfaces forming an included angle which is bisected by the axis of the stop bar such that rotation of the spindle by fluid pressure on the valve is prevented but manual rotation of the spindle in either direction is permitted.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile