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:
May. 09, 1995
Filed:
Jun. 23, 1994
Dennis C Giesler, Maple Grove, MN (US);
Parker-Hannifin Corporation, Cleveland, OH (US);
Abstract
A push-to-connect coupler including an interlocking three-way valve that enables coupling and uncoupling with respect to a mating nipple only when the coupler is in a vent mode. The coupler is characterized by a unique integration of a manually operated three-way ball valve that vents the coupler down to atmospheric or reduced pressure prior to coupling or uncoupling and preferably to a recovery line, a push-to-connect sleeve locking mechanism which interlocks with the manually operated handle of the three-way valve and whose operation is visibly obvious to the user, and an internal valve mechanism that prevents the free flow of media should the coupler become miscocked.