Swivel coupling for a pool cleaner
US6220636A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2000 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Jan 31, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L27/023
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved swivel coupling is provided for use with a pool cleaner, particularly for use in connecting a pool cleaner of the type powered by a suction or vacuum source to a flexible vacuum hose which is connected in turn to the suction side of conventional pool water filtration equipment. The swivel coupling comprises outer and inner part-spherical ball segments adapted for respective connection to the vacuum hose and to a water flow port on the pool cleaner, wherein the outer ball segment defines a socket for rotationally receiving and supporting the inner ball segment in a manner to accommodate substantial angular and rotational swivel displacement therebetween. A plurality of generally axially extending ribs are formed within the socket for rotationally supporting the inner ball segment with minimal contact area, and to define therebetween a plurality of axially elongated recessed channels. The socket further includes an annular and relatively narrow width seal ring disposed generally at a distal end thereof for normally engaging the inner ball segment to restrict ingestion of debris and grit to the interface between the outer and inner ball segments. Any ingested grit and debr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.