Patents by Inventor Albert B. Crabb, Jr.

Albert B. Crabb, Jr. 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: 3957643
    Abstract: An extractor unit of relatively small size includes a motor-basket assembly consisting of an electric motor with suitable protective housing and a projecting drive shaft, and an open ended, generally cylindrical basket nonrotatably coupled to the drive shaft in axial relation. This motor-basket assembly is freely suspended from one or more overhead members of a support frame by one or more suspension links which are elastic and flexible, with such links being secured to the motor housing. The point of attachment to the motor housing in relation to the center of mass of the motor-basket assembly will determine whether the assembly is supported horizontally, vertically or otherwise. The unit is enclosed in a protective housing which, in one form, closely encloses the motor-basket assembly and defines a part of the assembly suspended by the frame; and, in another form, is secured to the frame enclosing the entire unit including the frame and the suspended motor-basket assembly.
    Type: Grant
    Filed: August 12, 1974
    Date of Patent: May 18, 1976
    Inventors: Frederick W. Belz, Albert B. Crabb, Jr.