Patents by Inventor Charles R. Keller

Charles R. Keller 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: 6591823
    Abstract: An arrow guide and holder including a body having a pair of crossed, offset bores formed therethrough, a flexible, resilient, bendable arm installed in each bore so that the forward ends of the arms extend forwards of the body and the rearward ends extend rearwards of the body, and a coil spring connected between the rearward ends to bias the arms towards a rest position. The arms are complementary in shape for gripping the shaft of an arrow therebetween, and are movable from the rest position to permit free passage of the arrow fletching therethrough. The forward ends or the rearward ends of the arms, or both, may be at least partly covered by jackets.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: July 15, 2003
    Assignee: Keller Manufacturing, Inc.
    Inventor: Charles R. Keller
  • Patent number: 5454169
    Abstract: A back sight is illustrated for alignment with a front sight on a bow for use in compensating for improper torsional positioning of the bow having an arcuate housing (A) which includes a loop forming a frame for the back sight which is adjustably carried by a mounting bracket (B) upon the bow and accommodating a cross hair (C) for facilitating proper torsional adjustment of the bow in the hand of the archer when aligned with a compatible front sight.
    Type: Grant
    Filed: April 1, 1994
    Date of Patent: October 3, 1995
    Inventor: Charles R. Keller
  • Patent number: 4120096
    Abstract: A sight for use on a bow for aiding an archer in sighting on a target from both elevated and level shooting positions. The sight includes an elongated sighting element which has a plurality of sighting beads thereon. The elongated sighting element is pivotably mounted on a horizontally extending shaft and is balanced so that the top bead on the elongated sighting element pivots about said horizontal shaft as the bow is tilted for automatically determining the proper elevation of the bow when shooting from an elevated position. The elongated sighting element may be locked in various arcuate positions when shooting on the ground.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: October 17, 1978
    Inventor: Charles R. Keller