Title:
野球守備練習マシン
Document Type and Number:
Japanese Patent JP4404899
Kind Code:
B2
Abstract:
The present invention provides a baseball practice machine for propelling balls onto a practice field thereby providing simulated hits for use in fielding practice for ball players. The practice machine includes a ball hopper, a propulsion unit for propelling a ball toward a practice field, a movable barrel through which a ball is propelled. A barrel positioner is coupled to the propulsion unit and the movable barrel for adjusting the position of the barrel thereby controlling the trajectory of a propelled ball. A programmable control system controls the operation of the practice machine. Trajectory parameters for the propelled balls are selected from predetermined parameters defining the path of the ball to a location of a practice field where the ball is intended to land. Information defining the dimensions of a practice field are stored in a memory of the control system and used in determining the trajectory parameters.
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| JPS5932476 | PITCHING APPARATUS |
Inventors:
WILMOT,Thomas
Application Number:
JP2006513269A
Publication Date:
January 27, 2010
Filing Date:
April 23, 2004
Export Citation:
Assignee:
WILMOT,Thomas
International Classes:
A63B69/40; A63B69/00; F41B4/00; F41B15/00; A63B
Domestic Patent References:
| JP56045676A | ||||
| JP7227454A | ||||
| JP2000245887A | ||||
| JP58188079U |
Attorney, Agent or Firm:
Kunio Miura
Iwao Hirayama
Iwao Hirayama
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