Trackball for computer

Info

Patent number: D326261
Type: Grant
Filed: Mar 8, 1991
Date of Patent: May 19, 1992
Assignee: Microsoft Corporation (Redmond, WA)
Inventors: Stuart Ashmun (Seattle, WA), Charlie Garthwaite (Kirkland, WA), Bridget Cameron (Seattle, WA), Allan H. Stephan (Seattle, WA), Michael D. Nelson (Seattle, WA), Mike M. Paull (Seattle, WA), Paul Bradley (Woodside, CA), James R. Yurchenco (Palo Alto, CA), Elinor J. Fulton (Kennington, CA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Freda S. Nunn
Law Firm: Seed and Berry
Application Number: 7/666,397

Description

Description

FIG. 1 is a top front and left side isometric view of a trackball for computer showing our new design;

FIG. 2 is a bottom front and right side isometric view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a rear elevational view thereof;

FIG. 8 is a top front and left side isometric view of a second embodiment of our new design;

FIG. 9 is a top plan view thereof;

FIG. 10 is a top front and right side isometric view of a third embodiment of our new design;

FIG. 11 is a bottom front and left side isometric view thereof;

FIG. 12 is a bottom plan view of the second embodiment shown in FIG. 8;

FIG. 13 is a rear elevational view thereof;

FIG. 14 is a right side elevational view thereof; and,

FIG. 15 is a front elevational view thereof.

The cord is shown in broken lines in the figures for illustrative purposes only and forms no part of the claimed design and the rear elevational view of the third embodiment is similar to the rear elevational view of the second embodiment shown in FIG. 13.