Patents Assigned to Jerry M. Ball
  • Load balancing lifting apparatus
    Patent number: 5836632
    Abstract: Apparatus for balancing and lifting a load supported from opposite ends of a cable or chain and which includes a sheave engageable by the cable or chain and through which extends a pin member. The pin member is radially offset from the center of the sheave and is supported, at opposite ends thereof, by structural members which may be attached to a source of lifting power.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: November 17, 1998
    Assignee: Jerry M. Ball
    Inventor: Juan Rogelio Pompa