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:
Jul. 22, 2003
Filed:
Aug. 08, 2001
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A solenoid valve includes an outlet tube and a plunger stop. A plunger is slidably disposed within the solenoid valve between the outlet tube and the plunger stop. The plunger is movable between a closed position wherein the plunger engages the outlet tube to block fluid flow there through and an open position wherein the plunger is distanced from the outlet tube to permit fluid flow there through. The plunger includes a plunger insert that forms a dome-shaped plunger stop cushion that, during opening of the valve at least partially contacts a flat plunger contact face formed by the plunger stop. The dome-shaped plunger stop cushion relatively effectively damps the impact between the plunger and the plunger stop by allowing the plunger insert material, e.g., rubber, to compress more and absorb more energy of the impact. Thus, signal noise caused by the solenoid valve is minimized.