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:
Jun. 21, 1977
Filed:
May. 19, 1975
Jack Alan McMath, Fort Thomas, KY (US);
Paul R Wilder, Cincinnati, OH (US);
Larry Lee Alderson, Valley Center, KS (US);
Dover Corporation, New York, NY (US);
Abstract
A dry break coupler of a coupling device has an adapter connected thereto in an arrangement in which the adapter must be disposed within the coupler in the position in which it is locked to the coupler before a rotatable shaft can be rotated to initially lock the adapter to the coupler. The coupler has a poppet valve, which opens a valve in a passage in the adapter when the poppet valve is opened to provide communication therebetween, movable to its open position by the rotatable shaft only after the adapter has been locked to the coupler. The adapter cannot be released from the coupler until after the poppet valve has been moved from its open position to its closed position by rotation of the rotatable shaft in the opposite direction.