Patents by Inventor Elferd L. Evans

Elferd L. Evans 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: 4781509
    Abstract: A stack loader (30), for picking up a stack (10) of thin metal sheets, moving the stack to a feed hopper (100) and lowering the stack into the feed hopper, is provided, the stack loader (30) having a fork support frame (31) and a stack retainer (32) telescopically received in the fork support frame, the stack retainer (32) being shaped to fit over the stack while leaving the back of the stack mostly exposed, the fork support frame (31) having lifting forks (41) mounted thereon which can fit under the stack (10) and lift it up into the stack retainer (32) so that sagging bottom sheets in the stack will not spill out of the stack loader (30) during movement of the stack (10) to the feed hopper (100). The forks (41) can be locked under the stack (10) and an automatic safety (92, 93) is provided to prevent unlocking of the forks during movement of the stack loader to the feed hopper.
    Type: Grant
    Filed: December 9, 1987
    Date of Patent: November 1, 1988
    Inventor: Elferd L. Evans
  • Patent number: 4018146
    Abstract: A strapping machine for palletized loads wherein probes are positioned and held against movement at the upper edges of the load. The strap which secures the load to the pallet is snubbed around the probes as the strap is tautened. After the strap has been tautened and clamped, the probes are removed so that the tautened strap engages the upper edges of the load.
    Type: Grant
    Filed: April 16, 1976
    Date of Patent: April 19, 1977
    Inventor: Elferd L. Evans