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:
Apr. 24, 2001
Filed:
Feb. 15, 2000
Keitaro Yonezawa, Kobe, JP;
Tsutomu Shirakawa, Kobe, JP;
Kabushiki Kaisha Kosmek, Hyogo, JP;
Abstract
A main valve (,) has a first valve seat (,) to which a compression spring (,) urges a first closure member (,). A restricting passage (,) and an actuation chamber (,) for valve closing are arranged within the first closure member (,) in order. A valve-opening holding chamber (,) is formed from an inner space defined by a fitting wall (,) with which the first closure member (,) fits at a final time of its closing movement. The actuation chamber (,) communicates with a second valve seat (,) of a pilot valve (,). A pushing spring (,) brings a second closure member (,) into closing contact with the second valve seat (,). The second valve seat (,), the first valve seat (,), the actuation chamber (,) and the valve-opening holding chamber (,) have respective sectional areas (S), (T), (U) and (V) set to values enlarging one after the other in the mentioned order.