Patents by Inventor Richard L. Groendyke

Richard L. Groendyke 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).

  • Plug-in rechargeable battery unit
    Patent number: 5426358
    Abstract: A rechargeable power pack is shaped and dimensioned to be inserted in the battery compartment of an electrical device. The top of the power pack is exactly symmetrical with the battery compartment cover which it replaces. The power pack houses rechargeable power cells, and has a peripheral wall spaced apart from the sides of the battery compartment mounting the battery contact terminal. Flexible prongs project from the peripheral walls to provide a wiping contact with either a spiral spring negative terminal or a stationary positive terminal of the compartment. A top mounted connector allows recharging of the power pack even while in use on the electrical device. Baffles mounted astride each flexible prong avert damage to the prong during insertion of the power pack into the battery compartment.
    Type: Grant
    Filed: August 26, 1993
    Date of Patent: June 20, 1995
    Assignee: Steven G. Leiserson
    Inventors: Steven G. Leiserson, Richard L. Groendyke
  • Plug-in rechargeable battery unit
    Patent number: 5260636
    Abstract: A rechargeable power pack is shaped and dimensioned to be inserted in the battery compartment of an electrical device. The top of the power pack is exactly symmetrical with the battery compartment cover which it replaces. The power pack houses rechargeable power cells, and has a peripheral wall spaced apart from the sides of the battery compartment mounting the battery contact terminal. Flexible prongs project from the peripheral walls to provide a wiping contact with either a spiral spring negative terminal or a stationary positive terminal of the compartment. A top mounted connector allows recharging of the power pack even while in use on the electrical device. Baffles mounted astride each flexible prong avert damage to the prong during insertion of the power pack into the battery compartment.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: November 9, 1993
    Assignee: Steven G. Leiserson
    Inventors: Steven G. Leiserson, Richard L. Groendyke
  • Soil cap for vegetation sprinkler
    Patent number: 4752033
    Abstract: A soil cap for a vegetation water sprinkler which is removably secured to a sprinkler and said cap will prevent entry of soil or debris during installation of a ground sprinkler system yet has a yieldable portion to allow water therethrough for testing and purging the sprinkler system. The cap includes relatively shallow threads to engage sprinkler threads that will allow for easy finger removal yet will retain the cap in place during water pressure testing and purging.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: June 21, 1988
    Assignee: Champion Brass Manufacturing Co.
    Inventor: Richard L. Groendyke
  • Ashtray pocket insert
    Patent number: D470267
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: February 11, 2003
    Inventor: Richard L. Groendyke
  • Clamp-on cup holder
    Patent number: D476860
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: July 8, 2003
    Inventor: Richard L. Groendyke
  • Handlebar pocket assembly
    Patent number: D483717
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: December 16, 2003
    Inventor: Richard L. Groendyke