Window glaze cleaning
OwnerDaniel J. Gormaninventor
Life of this patent
Estimating the term…
Abstract
A window glaze cleaning device comprises an outer frame and an inner frame which have magnets attached so that when they are placed face-to-face on opposite glazings of a window, the outer frame can be moved, by movement of the inner frame, over the outer glazing. The frames have bearings, e.g. air bearings to reduce friction, and the outer frame, which is counter-weighted, has nozzles for spraying cleaning liquid on to the outer glazing, a scrubber which may be positioned for cleaning the outer glazing, and a wiper blade which may be positioned for removing the cleaning liquid therefrom as is done in conventional window cleaning. The outer frame is counter weighted by pulleys on rocker arms which move the outer frame away from the window when it is to be repositioned.
Claims5
A window glaze cleaning device, comprising:
- (a) an outer frame for, in operation, being placed on an outer, glazed surface of a window,
- (b) an inner frame for, in operation, being placed on an inner glazed surface of that window face-to-face with the outer frame,
- (c) at least three outer bearings attached to the outer frame for, in operation, holding the outer frame closely spaced from the outer glazed surface,
- (d) at least three inner bearings attached to the inner frame for, in operation, holding the inner frame closely spaced from the inner glazed surface,
- (e) first magnet means attached to the outer frame,
- (f) second magnet means attached to the inner frame and oriented to present opposite polarities when, in operation, placed face-to-face for magnetic attraction with the first magnet means, whereby the inner and outer frames will be held face-to-face, by the magnetic attraction, closely spaced from their respective glazed surfaces,
- (g) a wiper blade assembly attached to and extending across the outer frame for, in operation, wiping cleaning liquid from the outer glazed surface,
- (h) nozzle means attached to the outer frame for, in operation, attachment to a source of cleaning liquid and directing that cleaning liquid into the path of the wiper blade assembly, and
- (i) a support assembly for, in operation, supporting the weight of the outer frame for movement of the outer frame relative to the outer glazed surface by the magnetic attraction between the first and second magnet means when the inner frame is moved from position on the inner glazed surface to another position thereon.
Dependencies are inferred from the claim text.