Patents by Inventor Mark W. Rawlins

Mark W. 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: 4925138
    Abstract: A collapsible hammock stand comprises a main body frame having a pair of opposed frame sections, each such section having a longitudinally extending upper rail interconnected with a pair of parallel spaced lower rails, the sections being pivotally interconnected at inner ends of their lower rails to permit pivotal movement between open and closed positions. A pair of support arms, each of which is also pivotal between open and closed position is also provided. A pair of support legs removably connectable with outer ends of the frame sections provides upright support for the stand when the frame sections are in their open position and a pair of coupling means removably connectable with upper ends of the support arms is provided for holding a hammock between the support arms.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: May 15, 1990
    Inventor: Mark W. Rawlins
  • Patent number: 4675936
    Abstract: The use of liquid aspirators which are connected to conventional vacuum cleaners is known. In this invention the body exists of two separate body parts which are held together by a filter cartridge. The said rear body piece is provided with an extended tube in which a hose from a conventional vacuum cleaner inserts. Also said rear body piece holds a cartridge containing a filter and filter support where liquid is filtered through. The front said body piece acts as the liquid reservoir and is provided with a tube connected to the front nozzle of said body part extending along the top of said body part and protruding through the filter cartridge to the back of rear body part. The liquid aspirated by suction of vacuum cleaner is discharged to the rear of assembled unit.
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: June 30, 1987
    Inventor: Mark W. Rawlins