Track ball

- HAL Laboratory Inc.
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Description

FIG. 1 is a perspective view of a track ball showing my new design.

FIG. 2 is a front elevational view of the track ball embodying the design.

FIG. 3 is a plan view of the track ball, as shown in FIG. 2.

FIG. 4 is a bottom view of the track ball, as shown in FIG. 2.

FIG. 5 is an end elevational view of the track ball as appearing from the rightward end in FIG. 2.

FIG. 6 is an end elevational view of the track ball as appearing from the leftward end in FIG. 2.

FIG. 7 is a rear elevational view of the track ball, as shown in FIG. 2.

FIG. 8 is a perspective view showing the track ball, a TV display unit and a processing unit being shown with associated connecting cables in broken lines for illustrative purposes only.

Referenced Cited
U.S. Patent Documents
D272921 March 6, 1984 Kim
D289306 April 14, 1987 Burnstein et al.
D291318 August 11, 1987 Kim
Other references
  • Hong Kong Toys, 1982, p. 10, bottom left, TF-503, Electronic Decision Maker.
Patent History
Patent number: D301256
Type: Grant
Filed: Mar 7, 1986
Date of Patent: May 23, 1989
Assignee: HAL Laboratory Inc. (Tokyo)
Inventor: Satoru Iwata (Tokyo)
Primary Examiner: Melvin B. Feifer
Law Firm: Flynn, Thiel, Boutell & Tanis
Application Number: 6/842,045
Classifications
Current U.S. Class: D21/48