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. 06, 2005
Filed:
Sep. 20, 2001
Hironobu Ichimaru, Chikugo, JP;
Hironobu Ichimaru, Chikugo, JP;
Ichimaru Giken Co., Ltd., Chikugo, JP;
Abstract
A direct-acting electric operated valve has a stem which reciprocates by an electric motor without using air pressure. In this direct-acting electric operated valve, as the stemvertically reciprocates, a first passageand a second passageare switched over. A cam mechanismis formed for converting rotary reciprocating motion of an eccentric camwhich rotary reciprocates by an electric motorinto vertical reciprocating motion. The eccentric cam is retained at an upper retaining position X which is slightly exceeding a top dead center Xand at a lower retaining position Y which is slightly exceeding a bottom dead center YIn a state in which an integral coil springwhich is previously held between an upper spring seatand a lower spring seatin its compressed state is mounted to a spring shaftwhich extends from a cam mechanism, the coil springis accommodated in a spring caseconnected to the stem.