Patents by Inventor Ralph T. Asp

Ralph T. Asp 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).

  • Door lock jamb plate and assembly
    Patent number: 4580824
    Abstract: A jamb plate used to anchor the door locking bolt member in a door lock set. The plate is securely mounted intermediate a stud and the door jamb portion itself with a reinforced striker edge provided. The fastening system for the plate operator operates to distribute applied breaking or opening stresses over a large area of the plate.
    Type: Grant
    Filed: January 20, 1984
    Date of Patent: April 8, 1986
    Inventor: Ralph T. Asp
  • Latch for sliding glass door
    Patent number: 4407539
    Abstract: A locking device for maintaining a sliding door in one of a number of locked positions along the length of its track. The locking device includes a spring-biased and pivotal lever having a toothed end urged toward a biting frictional contact with the track. The device is preferably mounted on the leading edge of the sliding door near its upper end for cooperative locking engagement with the upper track. The lever further includes a pair of bumpers mounted proximate its forward and rearward edges for providing a yieldable limit to the opening movement of the sliding glass door.
    Type: Grant
    Filed: August 28, 1981
    Date of Patent: October 4, 1983
    Inventor: Ralph T. Asp