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:
Dec. 02, 2003
Filed:
Nov. 09, 2001
Ojars Maldavs, Lincoln, NE (US);
Parker Hannifan Corporation, Cleveland, OH (US);
Abstract
A quick disconnect female coupler comprises, inter alia, a wiper seal retained in a radially opening annular groove and including at its rear side an annular recess that allows rearward rolling of the wiper seal in the annular groove when the wiper seal is subjected to a surge of high pressure fluid from the main cavity to the back side of the piston, whereby the wiper seal moves out of the way of the high pressure fluid surge to avoid being forced out of the annular groove; a tubular spacer in the female housing bore the forms therewith an outer flow passage and which serves as a guide for an axially movable valve body, the spacer having an annular land and a rear end post press-fitted in the housing bore and a housing counterbore, respectively, for retaining and aligning the spacer in the housing; a poppet valve provided with orifices in an angled shoulder thereof for avoiding interference with flow previously caused by coil springs used to bias the poppet valve; and an annular protection shield which performs the dual functions of retaining a collar spring in a locking collar chamber and providing a barrier to entry of foreign material into the locking collar chamber.