Underwater device for ruffling still water
OwnerJoseph W. Yergerinventor
Life of this patent
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Abstract
A small, battery operated, electric motor contained in an underwater waterproof housing operates a submerged propeller in a stationary location for the purpose of creating ripples on the surface of still water. Such ripples in a decoy-spread simulate motion of the decoys to waterfowl flying overhead, and thus create a more lifelike and inviting attraction. The underwater motor may be operated by remote control.
Claims3
A means whereby still water is caused to have ripples on the surface to simulate waterfowl swimming, comprising a waterproof housing containing a battery, an electric motor connected to and powered by the battery and causing to rotate a rotatable shaft, a propeller connected to the rotatable shaft, a watertight seal around the shaft at the top of the housing, an electrical circuit connecting the motor and battery with an on-off switch mounted such that it is accessible from outside the housing, a watertight threaded screw-on removable bottom for the housing, and a means of positioning the motor assembly a distance below the surface of the water such that ripples simulating the appearance of motion of waterfowl swimming on the surface are created without causing either an audible or a visual signal that would alarm incoming waterfowl in flight, such positioning means comprising a stake of adjustable length attached to the bottom of the housing.
Dependencies are inferred from the claim text.