Patents by Inventor David M. Alcorn

David M. Alcorn 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: 5535521
    Abstract: A guard for a portable chain saw is provided that will prevent injury from saw "kick-back" and will assist in preventing injuries from a moving saw blade. The chain saw guard can be easily adapted to conventional chain saws by the use of ordinary hand tools and includes a motor housing bracket and blade bridge, which is slidably directed along the saw blade by a pair of attached rods that are slidably mounted to the housing bracket. A slotted blade guide bar receives a bridge guide to stabilize a vertical bridge component, and a resilient spring returns the bridge to its original, extended posture along the blade.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: July 16, 1996
    Inventor: David M. Alcorn
  • Patent number: 4831763
    Abstract: A holder for receiving the handle of a fishing rod includes a container having a plate which applies pressure to the rod handle. The container is pivotally attached to a base and by pivoting the container in one direction, pressure is applied to the handle and when the container is pivoted in the opposite direction, the plate withdraws from the rod handle allowing the user to easily extract the fishing rod from the holder.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: May 23, 1989
    Inventor: David M. Alcorn