Patents by Inventor Ronald N. Oliver

Ronald N. Oliver 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).

  • Drop-bolt door lock assembly
    Patent number: 4688409
    Abstract: A high security drop-bolt lock assembly for a door includes a cylinder lock carried by a guard plate positionable on the outside of the door with the cylinder lock within the door, and a drop-bolt assembly on the inside of the door. The drop-bolt assembly is connected to protected studs extending from the guard plate to make a strong unitary construction extremely difficult to defeat and protecting the cylinder lock behind the guard plate and within the door.
    Type: Grant
    Filed: June 6, 1986
    Date of Patent: August 25, 1987
    Assignee: Medeco Security Locks, Inc.
    Inventors: Ronald N. Oliver, Stevie C. Roop
  • Retained key double cylinder deadbolt
    Patent number: 4315420
    Abstract: A double cylinder lock bolt has a key for the inside lock cylinder which is retained by a latch operable from the outside locking cylinder. Three alternative means for preventing operation of the inside cylinder by the outside key are disclosed. The arrangement makes a double cylinder deadbolt more suitable for use in fire or panic situation without sacrificing security.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: February 16, 1982
    Inventor: Ronald N. Oliver
  • Dead-bolt lock
    Patent number: D285772
    Type: Grant
    Filed: May 11, 1984
    Date of Patent: September 23, 1986
    Assignee: Medeco Security Locks, Inc.
    Inventor: Ronald N. Oliver