Patents by Inventor Jack L. Hamm

Jack L. Hamm 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).

  • Collapsible abdominal exerciser
    Patent number: 5935049
    Abstract: An apparatus for facilitating abdominal exercise (10) which includes a frame (12) having a central portion (20) between left (14) and right (16) hand engaging portions, the left (14) and right (16) hand engaging portions extending forward from the central portion (20), the central portion and the left and right hand engaging portions being essentially co-planar. A receptacle (18) is attached to the central portion, the receptacle (18) having a concave back of a head receiving portion (50) and an elongate groove neck receiving portion (52) extending from the back of the head receiving portion (50), the receptacle (18) extending transverse the plane of the frame.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: August 10, 1999
    Assignee: LongBall Sports, Inc.
    Inventor: Jack L. Hamm
  • Air channeling golf club head
    Patent number: 5807187
    Abstract: A golf club head having a body having a ball impacting face, a club shaft receiving socket and a tail extending rearwardly from the ball impacting face. The body has at least one air passage extending between the ball impacting face and the tail to channel air through the ball impacting face and out the tail as the club head is swung with the ball impacting face leading.
    Type: Grant
    Filed: October 21, 1996
    Date of Patent: September 15, 1998
    Assignee: LongBall Sports
    Inventor: Jack L. Hamm
  • Golf club shaft
    Patent number: D529972
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: October 10, 2006
    Inventor: Jack L. Hamm
  • Golf club head
    Patent number: D592720
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: May 19, 2009
    Inventor: Jack L. Hamm
  • Golf club head
    Patent number: D402341
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: December 8, 1998
    Assignee: Long Ball Sports, Inc.
    Inventor: Jack L. Hamm
  • Golf club head with a perforated face and cavity back
    Patent number: D419214
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: January 18, 2000
    Assignee: LongBall Sports, Inc.
    Inventor: Jack L. Hamm