Patents by Inventor Robert D. Boehlow

Robert D. Boehlow 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: 7389661
    Abstract: A deadbolt door lock assembly operates a deadbolt between an unlocked and locked position. It generally comprises an actuator, a ring, and a biasing member. The ring contacts the actuator and rotates it in either a clockwise or counter-clockwise direction to lock the deadbolt. Once the deadbolt is locked, the biasing member urges the ring out of contact with the actuator. In one aspect, the assembly is operable in either the clockwise or counter-clockwise direction without disconnecting the biasing member. In another aspect, the biasing member includes different portions to urge the ring out of contact with the actuator depending on whether ring operation is in a clockwise or counter-clockwise direction. The assembly may include a backstop to indicate rotational direction of the ring to lock the deadbolt. The assembly may also include a stabilizing bridge to inhibit transverse rotation of mounting screws that secure the assembly to a door.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: June 24, 2008
    Inventors: Robert J. Viviano, Robert D. Boehlow
  • Patent number: 6601420
    Abstract: A device allowing engagement of a conventional keyed deadbolt lock tumbler assembly without use of a key is provided. The device is assembled around the tumbler assembly and is fitted into a standard:door lock cut-out. The device includes a rotatable ring extending substantially around the periphery of the device. At rest the rotatable ring is biased in an original starting position. Upon overcoming the bias, the rotatable ring is moved to a second engaging position. Upon release of the rotatable ring the ring is biased back to the original position, while at the same time the deadbolt remains engaged. The biasing back of the device prevents the lock from binding or jamming.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: August 5, 2003
    Inventor: Robert D. Boehlow
  • Patent number: 5813261
    Abstract: a device allowing engagement of a conventional keyed deadbolt lock tumbler assembly without use of a key is provided. The device is assembled around the tumbler assembly and is fitted into a standard door lock cut-out. The device includes a rotatable ring extending substantially around the periphery of the device. At rest the rotatable ring is biased in an original starting position. Upon overcoming the bias, the rotatable ring is moved to a second engaging position in which the deadbolt is projected into an engaged position. Upon release of the rotatable ring the ring is biased back to the original position, while at the same time the deadbolt remains engaged. The biasing back of the device prevents the lock from binding or jamming.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: September 29, 1998
    Inventor: Robert D. Boehlow
  • Patent number: RE40193
    Abstract: A device allowing engagement of a conventional keyed deadbolt lock tumbler assembly without use of a key is provided. The device is assembled around the tumbler assembly and is fitted into a standard:door lock cut-out. The device includes a rotatable ring extending substantially around the periphery of the device. At rest the rotatable ring is biased in an original starting position. Upon overcoming the bias, the rotatable ring is moved to a second engaging position. Upon release of the rotatable ring the ring is biased back to the original position, while at the same time the deadbolt remains engaged. The biasing back of the device prevents the lock from binding or jamming.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: April 1, 2008
    Assignee: Safety By Design LLC
    Inventor: Robert D. Boehlow