Patents by Inventor Daniel D. Caris

Daniel D. Caris 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).

  • Low pressure back-up valve for pool cleaner
    Patent number: 6158464
    Abstract: A backup valve for use with a pool cleaner coupled to a source of water under pressure, comprising: a housing having an inlet and at least one outlet; and a pressure inducing apparatus in the inlet to direct the flow of water into the housing at a greater pressure than that supplied by the water supply.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: December 12, 2000
    Assignee: Letro Products, Inc.
    Inventors: Sanford F. Campbell, Daniel D. Caris
  • Portable foldable hoist
    Patent number: 4334668
    Abstract: A portable hoist is provided and is adapted to be used for lifting and moving heavy objects or loads such as automobile engines, etc. The hoist is designed such that it is portable, in that it is fully foldable into a small, compact unit for storage or transport. The hoist is further mounted on rollable wheels, thereby permitting movement when loaded.
    Type: Grant
    Filed: February 17, 1980
    Date of Patent: June 15, 1982
    Inventor: Daniel D. Caris