Patents by Inventor L. Rodger Calder

L. Rodger Calder 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).

  • Valve box locking lid and method therefor
    Patent number: 6763967
    Abstract: A locking lid and method for a valve box. The locking lid has a closure and surrounding external seal, which fit into the valve box opening and close/seal it. The locking mechanism of the locking lid preferably consists of an actuator spindle that extends through the closure, and that is received in an actuator follower positioned therebelow. The actual follower is in pivotal engagement with a plurality of locking pawls, such that turning of the actuator spindle causes movement of the actuator follower and thus pivoting of the locking pawls—moving the locking pawls into a locked or unlocked position relative to a lid seat within the valve box.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: July 20, 2004
    Inventor: L. Rodger Calder
  • Valve box locking lid and method therefor
    Publication number: 20030201269
    Abstract: A locking lid and method for a valve box. The locking lid has a closure and surrounding external seal, which fit into the valve box opening and close/seal it. The locking mechanism of the locking lid preferably consists of an actuator spindle that extends through the closure, and that is received in an actuator follower positioned therebelow. The actual follower is in pivotal engagement with a plurality of locking pawls, such that turning of the actuator spindle causes movement of the actuator follower and thus pivoting of the locking pawls—moving the locking pawls into a locked or unlocked position relative to a lid seat within the valve box.
    Type: Application
    Filed: April 29, 2003
    Publication date: October 30, 2003
    Inventor: L. Rodger Calder