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:
Apr. 19, 1977
Filed:
May. 14, 1975
William E Hanold, Bloomington, IL (US);
National Union Electric Corporation, Greenwich, CT (US);
Abstract
A hose coupling for detachably connecting one end of a cleaning tool hose to the suction inlet of a suction cleaner. The coupling includes a female coupling portion comprising a pair of circumferentially spaced, diametrically arranged flange portions on the margin of the suction inlet, and a male coupling portion comprising diametrically-spaced lug means on the end of the hose. The lug means are axially shiftable through recesses in the flange portions when the end of the hose is positioned for initial insertion into the inlet. After initial insertion, the end of the hose is rotated through a predetermined number of degrees to a locked, operative position in the inlet. A spring biased detent holds the end of the hose in its locked operative position, and a manually actuated push-button permits a user to disengage the detent from a receiving notch in one of the flange portions so that the end of the hose can be rotated to its initial insertion position and then withdrawn axially from the suction inlet.