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:
Jan. 30, 1990
Filed:
May. 08, 1989
Peter J Malone, Elk Grove, IL (US);
Robert J Torrence, Addison, IL (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A solenoid operated refrigerant expansion valve, particularly for automotive air conditioning systems, having a center-post guided tubular armature which slides on the post to provide valving of cross-ports communicating with a hollow region in the post which communicates with the valve outlet. The tubular armature has a pair of sleeves disposed on the interior at opposite ends thereof which provide the sole sliding contact surfaces on the post for minimizing friction therebetween to reduce the tendency of the armature to seize on the post.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile