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US 4,285,469 AGranted
Apparatus for cleaning surfaces having an upright orientation
OwnerPaul Hammelmanninventor
Life of this patent
Estimating the term…
Abstract
A water-spraying device for cleaning ship's hull and other upright surfaces has a horizontally movable carriage from which an outrigger extends towards the surface to be cleaned, and carries a water-spraying device. The carriage has a longitudinally extending water reservoir and a water supply conduit extends along its path of movement and has valves which are opening by a device in the carriage when the water in the reservoir drops below a predetermined level.
Claims9
Apparatus for cleaning surfaces having an upright orientation, particularly ship hulls, comprising an elongated carriage movable horizontally along a support having an upright wall;
- a multi-partite pivotable arm projecting from said carriage and having a free end portion provided with a water-discharging device;
- a reservoir mounted on and extending along said carriage so as to be located laterally adjacent said wall, said reservoir having an upper portion provided with a water inlet opening which is located at a side facing said wall and is substantially coextensive with the length of said reservoir;
- a water supply conduit mounted at said wall extending along the path of movement of said carriage and having a plurality of longitudinally spaced water discharge valves positioned to discharge water through said inlet opening into the reservoir;
- and means responsive to the water level in the reservoir for opening said valves during movement of the reservoir when the water level therein drops below a predetermined lower limit.
1 more element
Dependencies are inferred from the claim text.