Patents by Inventor Andrew William Palm

Andrew William Palm 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).

  • Post hole digger
    Patent number: 6725950
    Abstract: A post hole digger has a frame attached to three-point linkage of a tractor. A boom has its proximal end pivotally connected to the frame, and an auger is pivotally mounted to the distal end of the boom. The boom is formed by a pair of laterally spaced arms, each of which is an integrally formed angled arm. The boom arms are bent from straight lengths of steel in a cold working process, to reduce manufacturing time and cost.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: April 27, 2004
    Inventor: Andrew William Palm
  • Post hole digger
    Publication number: 20030146021
    Abstract: A post hole digger (10) has a frame (11) attached to a three-point linkage of a tractor (12). A boom (20) has its proximal end pivotally connected to the frame (11), and an auger (31) is pivotally mounted to the distal end of the boom (20). The boom (20) is formed by a pair of laterally spaced arms (21), each of which is an integrally formed angled arm. The boom arms (21) are bent from straight lengths of steel in a cold working process, to reduce manufacturing time and cost.
    Type: Application
    Filed: February 5, 2002
    Publication date: August 7, 2003
    Applicant: Andrew W. Palm, Michelle Frances Rewell (trustee) and Megan Jane Morris
    Inventor: Andrew William Palm