Patent ID: 8020786

Claim:
A shower head with a mechanism for varying the spray pattern of water exiting there from, said mechanism comprising: a driving assembly having a waterwheel that extracts hydropower from water flowing through the shower head, a driving gear connected to said waterwheel via a shaft such that when sufficient water flow is passing through said shower head said driving gear is rotated about a longitudinal axis of said shaft as a result of said hydropower; a rotatable nozzle plate having a plurality of holes of the same or different size and shapes through which water passes to generate different water spray patterns, said nozzle plate having a plurality of spaced apart apertures disposed at or near its periphery and a nozzle gear fixedly mounted thereto; and an actuation gear assembly having an actuating gear fixedly mounted to a pin and biasedly urged towards said nozzle plate via a spring, and said actuation gear assembly movable by a push button mechanism; and in a normal configuration said pin engages with one of said plurality of spaced apart apertures disposed on the periphery of said nozzle plate, thereby holding said nozzle plate stationary; and wherein when said push-button mechanism is depressed by a user, a lever actuates the actuating gear such that said pin disengages said nozzle plate thereby allowing said nozzle plate to rotate, and said actuating gear causing meshing engagement between said nozzle plate and said driving gear, so that the rotation of said driving gear via said hydropower rotates said nozzle plate.