Patents by Inventor Philip Denman

Philip Denman 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).

  • Security cap for fastener devices
    Patent number: 5827029
    Abstract: A device for restricting access to the head (10) of a fastener (9) has a first part (18) including an attaching flange (26) adapted to be captive between the head (10) and a member 14 in which the shank (12) of the fastener is to be received. The first part (18) has a recess (13) which the head (10) is accommodated and the second part of the device (20) is dimensioned to be slidingly received in the recess to close the recess without engaging the head (10). The first and second parts (18, 20) have formations (30, 38) which cooperate when the second part 20 is sufficiently inserted into the recess (30), to prevent withdrawing of the second part (20) from engagement with the first part (18), whereby to prevent access to the fastener. The first and second parts comprise frustroconical external surfaces (22, 24), which in use taper in a direction away from the member (14) to which the device is to be secured in use.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: October 27, 1998
    Inventor: Philip Denman
  • Vehicle wheel lock
    Patent number: D440859
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: April 24, 2001
    Inventor: Philip Denman
  • Wheel clamp
    Patent number: D348197
    Type: Grant
    Filed: April 14, 1993
    Date of Patent: June 28, 1994
    Inventor: Philip Denman
  • Security unit
    Patent number: D434686
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: December 5, 2000
    Inventor: Philip Denman