Patents Assigned to Richard H. Davey, Inc.
  • Dispensing pump with deformable pump wall and positive shut-off
    Patent number: 6755327
    Abstract: A container-mounted dispensing pump incorporates an elastically deformable pump wall and elastomeric valves for controlling the flow into and from the pump chamber. A mechanism at the movable end of the deformable pump wall engages the outlet valve to effect positive closure thereof when the actuator is disposed in an extended, shipping position. With the pump actuator placed in the shipping position, the close outlet valve will preclude leakage of the container contents though the pump.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: June 29, 2004
    Assignee: Richard H. Davey, Inc.
    Inventors: Robert E. Hazard, Frederick R. Handren