Patents by Inventor Ed Klamar

Ed Klamar 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: 4955756
    Abstract: Backfilling apparatus adapted to be moved along a trench by a tractor includes a chassis, a hitch attachable to the chassis on either side, hydraulic cylinder for varying the attitude of the chassis to the hitch, a hopper mounted on the chassis to receive backfilling material, a variable speed conveyor carrying backfilling material from the hopper to an elevated position, a shredder accepting material from the conveyor, an inclined vibrating screen receiving shredded material and discharging padding fill onto the pipe in the trench and oversize material onto the padding fill in the trench. A grizzly at the hopper mouth can be positioned to discharge large masses of fill on either side or the rear of the chassis.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: September 11, 1990
    Inventor: Ed Klamar