Patents by Inventor David Jesse Rawlins

David Jesse Rawlins has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5641399
    Abstract: A swimming pool cleaning system 2 is provided which provides both water suction and compressed air to a pool cleaning device. A pump 20 draws water form a swimming pool P through the pool cleaning device, an attached vacuum hose 14 and a suction line 12. An air inlet port 10 enters the suction line 12 adjacent the pump 20. The pump 20 then compresses the air A and pumps the water to a higher pressure simultaneously. The pump 20 is followed by a main pool filter 40 in which the water is filtered and returned to the pool P and the compressed air A is separated. A compressed air outlet 50 draws the compressed air A out of the main pool filter 40 and delivers the compressed air A to the pool cleaning device along a compressed air supply line 58. The air inlet port 10 includes a hollow inner tube segment 60 partially surrounded by a resilient outer sleeve 70.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: June 24, 1997
    Inventor: David Jesse Rawlins