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. 19, 1988
Filed:
Nov. 25, 1986
Asi Perach, Farmington Hills, MI (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A control valve assembly 10 having a pair of axially opposed seats 54, 56 is disclosed. A poppet 66 is disposed in a control chamber 58 between the seats. The poppet is movable between the seats to establish an average pressure in the control chamber. The poppet is a portion of an armature 28. In one embodiment, the armature is urged in a first direction by a solenoid and in the opposite direction by a spring 76 which extends between the armature and a housing of the valve. In another embodiment, means 310, such as diaphragms 312 or 314 or the slidable engagement 318, 320 between the housing 224 and the first end 251 of the armature are provided for radially positioning the armature as the armature is moved between the seats. In still another embodiment, the armature 228 is formed of a first section 416 and a second section 418 which are jointed by a shaft 434 which is slidable with respect to the first section.