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. 27, 1976
Filed:
Apr. 08, 1975
Applicant:
Inventor:
Syunshi Ogata, Koshigaya, JA;
Assignee:
Shoketsu Kinzoku Kogyo Kabushiki Kaisha, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
13762538 ; 13762569 ;
Abstract
In a spool-sleeve type electromagnetic change-over valve the dimension of the non-valving holes in the axial direction of the sleeve is made considerably larger than the comparable dimension of the valving holes and the total area of a row of the non-valving holes is similarly made much larger than a row of the valving holes so that the spool stroke is kept small while increasing the air flow capacity of the valve.