Patents by Inventor Richard H. Darwent

Richard H. Darwent 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).

  • Corner post platform assembly
    Patent number: 4249640
    Abstract: A corner post platform assembly for supporting an elevator cab having door openings in two adjacent wall portions, including a safety brake assembly, a support frame, and a floating platform. The safety assembly includes mounting plate members at its opposite ends, upon which the support frame is mounted, and the floating platform is connected to the support frame via resilient spacer and mounting devices.
    Type: Grant
    Filed: May 2, 1979
    Date of Patent: February 10, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Richard H. Darwent, George R. Phillips, Herman S. Karol
  • Elevator system
    Patent number: 4230205
    Abstract: An elevator system including an elevator car and counterweight, hoist roping, and chain compensation for the weight of the hoist roping. A chain wheel spaces and guides the compensating chain. Vibration in the elevator car, and airborne noise due to the chain, are substantially reduced by a mounting assembly for the chain wheel which mounts the chain wheel on springs. The springs are adjustably biased to partially support the weight of the chain wheel, to reduce the loading on the compensating chain.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: October 28, 1980
    Assignee: Westinghouse Electric Corp.
    Inventor: Richard H. Darwent