Patents Assigned to Athletic Engineering Corporation
  • Ball throwing machine
    Patent number: 4579100
    Abstract: A machine for propelling a ball comprising an elongated barrel having an axially compressible coil spring therein that is controlled by an axially reciprocable screw disposed coaxially with and internally of said spring. A nut is threadably engaged on the screw whereby said screw is axially advanced and retracted. A coupling on the end of the screw first engages then releases said spring.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: April 1, 1986
    Assignee: Athletic Engineering Corporation
    Inventor: Lawrence D. Whitaker