Patents by Inventor Darrell J. Scheffer

Darrell J. Scheffer 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: 5325839
    Abstract: An arrow rest for an archery bow having an arrow support arm that pivots in two directions from an initial arrow receiving position, on a generally horizontal plane, and automatically returns to the initial position after being displaced in either direction. Two springs cooperate to locate and maintain the arrow support arm in the initial position and act to cushion each other during operation. A first spring, of predetermined tension, returns the arrow support arm to said initial position after being displaced by an arrow being discharged from the bow and is cushioned upon return by a second spring, of higher tension, which then cooperates to locate the arrow support arm in said initial position. If the arrow support arm is accidently forced essentially backwards of normal rotation said second spring will return the arrow support arm to said initial position where said first spring will first cushion and then cooperate to locate the arrow support arm in said initial position.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: July 5, 1994
    Inventor: Darrell J. Scheffer
  • Patent number: 4754825
    Abstract: The game sled of the instant invention includes an elongate, game carrying box which has spaced apart, substantially parallel sides and a planar base. The forward end of the box is streamlined for easy movement over and around obstructions. The game sled is drawn over a surface by a powered winch which is mounted in the box and which includes a spool having a length of cable wound thereon. The cable is played off of the spool and attached to a fixed object. The winch is then used to draw the sled towards the fixed object. A cable is trained from the spool through a cable guide, located in a substantially V-shaped fairlead located at the front end of the box. The free ends of the fairlead are attached at the sides of the box such that the apex of the V, containing the cable guide, is vertically swingable to assist clearance of the box over and around obstacles as the sled is drawn over the surface.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: July 5, 1988
    Inventor: Darrell J. Scheffer