Ball game practice apparatus

• US 4,974,843 A
• Filed: 03/14/1989
• Issued: 12/04/1990
• Est. Priority Date: 10/10/1986
• Status: Expired due to Fees

• Current Assignee: Bo L. Henningsson
• Original Assignee: Bo L. Henningsson
• Inventors: Henningsson, Bo L.
• Primary Examiner(s): Brown, Theatrice
• Application Number:
  US07/339,616
• Time in Patent Office: 630 Days
• Field of Search: 273/26 A, 273/29 A, 273/179 R, 273/181 A, 273/182 R, 273/182 A, 273/396, 273/397, 273/398, 273/401, 273/402, 273/410, 273/127 C, 124/51 R, 124/11
• US Class Current: 473/431
• CPC Class Codes: A63B 47/025 Installations continuously collecting balls from the playing areas, e.g. by gravity, with conveyor belts
• CPC Class Codes: A63B 69/409 with pneumatic ball- or body-propelling means

Abstract

The invention relates to a ball game practice apparatus, particularly for tennis practice, comprising a ball catching assembly (2) and a ball collecting assembly (3), which in its turn comprises at least a first chute (30) beneath the ball catching assembly, said ball catching assembly being connected with a ball propulsion assembly (5) via a ball feeding assembly (4). A characteristic feature of the invention is that in the ball collecting assembly (3) between the chute (30) and the ball catching assembly (2) there is a damping device (32), through which the balls must pass and which damps the falling speed of the balls to prevent them from leaving the ball collecting assembly (3) by rebounding from the bottom (33) of the chute. Another characteristic feature of the invention is further that the bottom of said at least first chute (30) consists of a plane, preferably sloping only in the longitudinal direction of the chute.

Claims

1. A ball game practice apparatus, suitable for tennis practice, said apparatus comprising:

a ball catching assembly;

a ball collecting assembly comprising first elongated chute means disposed beneath said ball catching assembly, said chute means having a bottom surface;

a ball feed means associated with said ball collecting assembly;

a ball propulsion assembly connected to said ball collecting assembly via said ball feeding assembly;

ball damping means extending between said first chute means and said ball catching assembly for damping the speed of balls and preventing said balls from leaving said ball collecting assembly as a result of rebounding from said bottom surface of said chute means, said chute means conveying balls toward said ball propulsion assembly after passing said damping means.

2. An apparatus according to claim 1, wherein said bottom surface of said first chute means comprises an inclined gradient plane.

3. An apparatus according to claim 2, wherein said inclined gradient plane extends longitudinally of said first chute means.

4. An apparatus according to claim 1, wherein said bottom surface of said first chute means is rigid.

5. An apparatus according to claim 1, wherein said bottom surface of said first chute means has a breadth which is between 3 and 12 diameters of a regulation tennis ball.

6. An apparatus according to claim 5, wherein said breadth is between 4 and 12 diameters of a regulation tennis ball.

7. An apparatus according to claim 1, wherein said ball damping means comprises a net extending over said surface of said first chute means said net having a mesh larger than the diameter of a regulation tennis ball.

8. An apparatus according to claim 1, wherein said first chute means defines a path which extends towards a second chute means, said second chute extending towards said propulsion assembly for conveying a ball towards said ball propulsion assembly.

9. An apparatus according to claim 8, wherein said second chute means has arcuate shaped bottom surface.

10. An apparatus according to claim 8, wherein said propulsion assembly includes a ball projector and said second chute means is inclined towards said ball projector.

11. An apparatus according to claim 10, and further comprising a ball accumulator disposed between and connected to said ball feed means and said second chute, said feed means being connected to said ball projector for feeding balls thereto one-by-one.

12. An apparatus according to claim 11, wherein said ball accumulator is a sloping tube.

13. An apparatus according to claim 11, wherein said ball projector includes a blowing fan connection to a ball collecting chamber and a propulsion tube connected to said chamber, balls being propelled from said propulsion tube by means of air pressure in said chamber produced by said blowing fan.

14. An apparatus according to claim 11, and further comprising means for feeding balls one by one from said second chute means to said ball accumulator and for feeding balls one by one to said ball feed means.

15. An apparatus according to claim 8, wherein said first chute means is longer than said second chute means.

16. An apparatus according to claim 8, wherein said first and second chute means slope in opposite directions and said damping means is above said first and second chute means.

17. An apparatus according to claim 1, wherein said ball catching assembly comprises an inclined canvas disposed above said ball collecting assembly.

18. An apparatus according to claim 17, wherein said canvas has an upper portion and a lower portion, means provided on said upper portion of said catching assembly for directing balls which hit said canvas at a high level down towards said collecting assembly.