Patents by Inventor Andrew A. Schrock

Andrew A. Schrock 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).

  • Collapsible livestock ramp
    Patent number: 4037564
    Abstract: A livestock ramp which is pivotally connected at one end to a vehicle and which includes opposite side walls connected to opposite side edges of the platform. The platform is shiftable from an inclined position in which livestock may enter or leave the vehicle and an upright position in which the platform spans the door opening into the vehicle. Each of the side walls is pivotally connected to the platform so as to overlie the platform in folded fashion when the platform is in its upright position. The side walls assume an upright position enclosing the platform sides when the platform is in its inclined position.
    Type: Grant
    Filed: August 20, 1975
    Date of Patent: July 26, 1977
    Inventor: Andrew A. Schrock