Patents by Inventor John R. Chamberlin

John R. Chamberlin 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: 4932703
    Abstract: A bed extension for a pick-up comprising a load-carrying beam substantially parallel to the rear of the truck bed supported outwardly of the truck bed by means of suspension cables. The suspension cables are attached to the load carrying beams at one end and to a rigid member of the truck body or frame at the other end and pass over vertical stakes which fit into existing or installed rear stake compartments of the pick-up. The load-carrying beam is stabilized by truss members which are secured at one end to the load-carrying beam and at the other end to the rear bumper or rear bumper support. The bed extension is removable or collapsible and is compactly secured together in its disasembled condition so as to be easily stored.
    Type: Grant
    Filed: August 21, 1984
    Date of Patent: June 12, 1990
    Inventors: John M. Chamberlin, John R. Chamberlin
  • Patent number: 4437481
    Abstract: A self-actuating drip valve for attachment to a standard faucet for the prevention of freezing of exposed water pipes. An elongated housing includes means for securing one end of the housing about the open end of the faucet. A valve seat is provided within the housing so that it is substantially adjacent to the faucet when the device is in use. Substantially concentric extendible walls extend between the elongated housing and a base plate. A valve stem, terminating in a valve tip, is secured to the base plate and extends within the extendible walls. The base plate may be adjusted by threadable means for moving the valve relative to the valve seat.
    Type: Grant
    Filed: May 20, 1982
    Date of Patent: March 20, 1984
    Inventors: John M. Chamberlin, John R. Chamberlin