Patents by Inventor Jack S. Haller

Jack S. Haller 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).

  • Portable ball throwing machine having oscillatory feature
    Patent number: 4168695
    Abstract: A portable ball throwing macine employs a battery operated motor for projecting tennis balls for practice purposes. The balls are fed from a bin by means of a ball fence and agitator to a tube which conveys the ball to a ball track. A spring biased arm is cocked by the motor and released at the correct point in the cycle by operation of a cam gear and pawl. The arm then strikes the ball projecting it from the machine. Included in the device is an arrangement for oscillating the device from side to side to vary the pattern of balls projected from the machine and a gate mechanism to index balls onto the ball track.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: September 25, 1979
    Assignee: Rallymaster, Inc.
    Inventors: Jack S. Haller, Robert L. Moore
  • Ball throwing machine
    Patent number: D251029
    Type: Grant
    Filed: July 21, 1977
    Date of Patent: February 6, 1979
    Assignee: Rallymaster, Inc.
    Inventors: Jack S. Haller, Robert L. Moore