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:
Oct. 04, 1994
Filed:
Aug. 27, 1993
Applicant:
Inventor:
Takeshi Saito, Shizuoka, JP;
Assignee:
Bailey Japan Co., Ltd., Tagata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
13762512 ; 1376253 ; 13762539 ; 13762549 ; 251127 ;
Abstract
A high differential pressure control valve having a plurality of stages of high resistance ports forming a high resistance passage and one or more low resistance ports forming a low resistance passage in a cage. The number of stages of low resistance ports is smaller than that of the high resistance ports so that a fluid at the side of an inlet passage is introduced into the high resistance passage under a low open degree range and into both the low resistance passage and the high resistance passage under a medium and a high open degree ranges.