Hose coupling for a suction cleaner
US4017937A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 1975 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | May 14, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/242
- WIPO fieldFurniture, games
- WIPO sectorOther fields
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in one of the flange portions so that the end of the hose can be rotated to its initial insertion position and then withdrawn axially from the suction inlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.