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US 4,783,868 AGranted
Vane for underliquid cleaning device
OwnerJames S. O'Callaghaninventor
Life of this patent
Estimating the term…
Abstract
A swimming pool cleaning brush is disclosed having a pivotal vane that uses fluid dynamics for increasing contact pressure of the brush with the surfaces being cleaned during forward motion and then pivots to a nonimpeding position upon backward motion. The vane is designed to enable after market installation and is economically formed from two or three pieces of flat metal or plastic with necessary fasteners.
Claims12
An underliquid-brush vane assembly comprising:
- (a) a bracket assembly securable to an underliquid brush device for holding a vane plate in spaced relation to the back of said brush device;
- b) a vane plate pivotally secured to said bracket assembly at pivot points on said bracket assembly;
- and,
- (c) stops on said bracket assembly positioned assymetrically relative to said pivot points and limiting the rotational movement of said plate, whereby forward motion of a brush device, to which said bracket assembly is secured, in a liquid causes said plate to pivot to a position producing fluid pressure aiding contact of said brush with an adjacent surface while reverse motion of said brush causes said plate to pivot to a position of minimum impedance to movement.
1 more element
An underliquid surface cleaning device comprising:
- (a) an abrasion element;
- (b) a pole secured to said abrasion element for manipulation of the abrasion element against an underliquid surface;
- (c) a substantially rectangular vane element;
- (d) a bracket secured to said cleaning device and pivotally supporting said vane element in spaced relation to said cleaning device, said bracket having at least two stops limiting pivotal movement of said vane element such that forward motion of the cleaning device causes the vane element to pivot to a position where the liquid flow urges the abrasion element in contact with the surface to be cleaned while reverse motion of the cleaning device causes the vane element to pivot to a substantially nonimpeding position.
1 more element
Dependencies are inferred from the claim text.