Patents by Inventor Geoffrey F. McKenzie

Geoffrey F. McKenzie 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: 4213728
    Abstract: This invention describes a container lifter which is economical where only occasional deliveries occur and the use of machines such as heavy fork lift or a straddle truck is unwarranted.The container lifter has an open U-shape chassis which is provided with two sliding rams at each end, each ram having a chain preferably of alloy steel construction, the chains being attached to twist locks which are adapted to fit into the bottom corners of a container.In a modification, the container lifter is provided with a second set of rams, the second set being mounted on arches above the frames so as to enable the container to be lifted to such a height that it can be placed on a truck.
    Type: Grant
    Filed: May 4, 1978
    Date of Patent: July 22, 1980
    Inventor: Geoffrey F. McKenzie