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:
Dec. 08, 2020
Filed:
Dec. 10, 2019
Rinnai Corporation, Aichi, JP;
Kotaro Kuzuya, Nagoya, JP;
RINNAI CORPORATION, Aichi, JP;
Abstract
An electrically operated gas flow regulating valve causes a needle valve body to move axially by the rotation of an electric motor through a motion conversion mechanism. The mechanism includes: a rotating body rotated by the electric motor; a cylindrical cam body prevented from rotating; a cam pin which is engaged with a spiral cam groove formed in the cam body and which is fixed to the needle valve body. The cam body is divided into two parts of a forward-side half part and backward-side half part with the cam groove serving as a boundary. The backward-side half part is urged by a coil spring in the forward direction such that the cam pin is pinched between the forward-side side edge of cam groove formed in the forward-side half part and the backward-side side edge of cam groove formed in the backward-side half part, thereby restraining the occurrence of hysteresis.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile