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:
Nov. 09, 1993
Filed:
Nov. 02, 1989
Akira Suzuki, Aichi, JP;
Aisin AW Co., Ltd, , JP;
Abstract
The disclosed pressure control valve includes a valve sleeve, a spool valve slidably mounted in the valve sleeve, an electromagnet including a core having a flange portion formed at one end, a push rod, a coil assembly, and a case. A tapered portion is formed on an end surface of at least one of a flange formed on the valve sleeve or the flange portion of the core. Since only the peripheries of the flange portions contact, concentricity of the spool valve and the push rod can be readily obtained at the time of assembling the valve sleeve and the core. The case has an annular recess formed on its inner surface for receiving a part of the electromagnet, for example the coil assembly or the flange portion of the core. An end portion of the case is locked into an annular stepped portion formed on the flange portion of the valve sleeve. Therefore, the length of the assembled electromagnet portion can be shortened by the depth of the annular step. A ring made of unwoven fabric is interposed between the flange portion of the core and the coil assembly to prevent looseness and to remove foreign matter from the hydraulic oil.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile