Patents Assigned to Reading Door Closer Corporation
  • Soffit plate and limit stop for use with hydraulic door closer
    Patent number: 4069546
    Abstract: A resilient element coupled to a soffit plate provides a means for first resiliently and then non-resiliently limiting movement of a control arm associated with a hydraulic door closer, to thereby cushion and limit movement of a door to its extreme open position.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: January 24, 1978
    Assignee: Reading Door Closer Corporation
    Inventor: Stanley B. Reichlin
  • Piston assembly for door closer
    Patent number: 4019220
    Abstract: Hydraulic door closer apparatus comprises a cylinder and an elongated piston disposed in the cylinder, the piston being made of relatively easily machined material, but having associated with it a rack of harder, wear and impact-resistant material for transmitting forces and motion to and from the piston.
    Type: Grant
    Filed: January 13, 1976
    Date of Patent: April 26, 1977
    Assignee: Reading Door Closer Corporation
    Inventor: Sidney Lieberman