Patents by Inventor Johnn P. Knapp

Johnn P. Knapp 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: 4966514
    Abstract: A mechanism (20) for automatic dumping of standardized portable refuse containers (35) into a hopper (22) of a refuse collection vehicle (24). The mechanism includes an assembly (32) for clamping the protruding lip (33) of the container (35). The assembly (32) is then tilted over the hopper (22) by an actuator (54) that is connected to the assembly (32) via two links (40, 42). The components of the mechanism (20) are arranged to minimize the extent to which the mechanism (20) protrudes outwardly from the hopper (22).
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: October 30, 1990
    Inventor: Johnn P. Knapp
  • Patent number: 4673327
    Abstract: A dumping apparatus for roll-out cart waste receptacles employs a tipper plate which includes a lifting mechanism and a lock plate which includes a locking mechanism. The tipper and lock plates are mounted for pivotal movement about respective first and second pivot axes on a mounting support that is attachable to a waste collection vehicle. A hydraulic cylinder has a trunnion mounting to the mounting support and an extensible rod member that is pivotally attached at one end to the tipper plate. The hydraulic cylinder functions as a drive mechanism for moving the tipper plate about the first pivot axis. The pivotal movement of the tipper plate causes the lifting mechanism to engage the pick-up bar and thereby lift the receptacle to bring its lock bar into engagement with the locking mechanism of the lock plate. The lock plate at all times moves about the second pivot axis in cooperation with and in the same rotational sense as the driven pivotal movement of the tipper plate.
    Type: Grant
    Filed: October 9, 1985
    Date of Patent: June 16, 1987
    Assignee: Lear Siegler, Inc.
    Inventor: Johnn P. Knapp