Tennis ball projector for training purposes

- Sony Corporation
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Description

FIG. 1 is a top plan view of a tennis ball projector for training purposes embodying my new design;

FIG. 2 is a front view;

FIG. 3 is a bottom plan view;

FIG. 4 is a left side view;

FIG. 5 is a right side view;

FIG. 6 is a rear view;

FIG. 7 is a perspective view.

Referenced Cited
U.S. Patent Documents
D212769 November 1968 Samuels
3905349 September 1975 Nielson et al.
4291665 September 29, 1981 Bash et al.
Foreign Patent Documents
2057893 April 1981 GBX
Other references
  • The Sporting Goods Dealer, May, 1975, p. 146, top right, Tennis Machine.
Patent History
Patent number: D269894
Type: Grant
Filed: Dec 15, 1980
Date of Patent: Jul 26, 1983
Assignee: Sony Corporation (Tokyo)
Inventors: Tsugio Hirabayashi (Tokyo), Michio Nakai (Ebina)
Primary Examiner: Melvin B. Feifer
Attorney: Lewis H. Eslinger
Application Number: 6/216,183
Classifications
Current U.S. Class: D21/210
International Classification: D2102;