Fluid vacuum apparatus and filter bag for cleaning swimming pool

Details Fluid vacuum apparatus and filter bag for cleaning swimming pool Fluid vacuum apparatus and filter bag for cleaning swimming pool

1991-05-02

1992-08-04

Dawson, Robert A.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Check valve

15 17, 92128, 210169, 2104162, B01D 3502

Patent

active

051356473

ABSTRACT:
A cylindrical housing mounts a piston therewithin, wherein the piston is reciprocatable relative to the housing, wherein the housing includes a "T" shaped junction, with a first check valve mounted to the "T" shaped junction at a first exhaust conduit to project debris into a flexible porous bag. A second check valve mounted at a lower terminal end of the housing permits directing of fluid into the housing for projection into the bag during use. The bag is formed with reinforcing plates for maintaining the bag in alignment relative to the exhaust conduit. The piston includes discs alternating with flexible membranes, and is secured by easily removable locking pins allowing easy piston maintenance. The apparatus can be used to remove debris from swimming pools.

REFERENCES:
patent: 93810 (1869-08-01), Crouse
patent: 695492 (1902-03-01), Robertson
patent: 1297603 (1919-03-01), Smith
patent: 2250419 (1941-07-01), Johnston et al.
patent: 3158104 (1964-11-01), Hutchinson
patent: 3360129 (1967-12-01), Powers
patent: 3549015 (1970-12-01), Willinger
patent: 3630364 (1971-12-01), Johnston
patent: 3820182 (1974-06-01), Vockroth
patent: 4565506 (1986-01-01), Williams
patent: 4807318 (1989-02-01), Kallenbach
patent: 4944101 (1990-07-01), Goble

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