Cleaning and liquid contact with solids – Apparatus – For work having hollows or passages
Patent
1989-09-06
1991-01-08
Coe, Philip R.
Cleaning and liquid contact with solids
Apparatus
For work having hollows or passages
15 17, E04H 416
Patent
active
049827545
ABSTRACT:
This invention concerns automatic swimming pool cleaner accessories which may be used to prevent such pool cleaners from following a substantial fixed pattern over a submerged surface to be cleaned and consists of a collar shaped to firmly engage the flexible hose used with a pool clenar, the collar having a plurality of projections extending radially from the collar. The projections may be stems terminating in spherical members at their outer ends.
REFERENCES:
patent: 1762065 (1930-06-01), Lally
patent: 3041089 (1962-06-01), Purues
patent: 3820172 (1974-06-01), Kane
patent: 3939861 (1976-02-01), Thompson
patent: 4356582 (1982-11-01), Stephenson
patent: 4776954 (1988-10-01), Brooks
BPH Patent Holding AG
Coe Philip R.
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