Track ball unit
Latest Asea Aktiebolag Patents:
- Method for stirring and/or braking of melts and a device for carrying out this method
- System for bumpless changeover between active units and backup units by establishing rollback points and logging write and read operations
- Force-absorbing means in a furnace
- Rotor for a turbo-generator
- Control system for an industrial robot
Description
FIG. 1 is a top perspective view from one end of a track ball unit showing my new design.
FIG. 2 is a perspective view looking from the other end of the track ball unit.
There are no ornamental features on the bottom of the track ball unit.
Referenced Cited
Patent History
Patent number: D292600
Type: Grant
Filed: Oct 1, 1984
Date of Patent: Nov 3, 1987
Assignee: Asea Aktiebolag (Vaster.ang.s)
Inventor: Eric Wagner (Vaster.ang.s)
Primary Examiner: Melvin B. Feifer
Law Firm: Pollock, Vande Sande & Priddy
Application Number: 6/656,799
Type: Grant
Filed: Oct 1, 1984
Date of Patent: Nov 3, 1987
Assignee: Asea Aktiebolag (Vaster.ang.s)
Inventor: Eric Wagner (Vaster.ang.s)
Primary Examiner: Melvin B. Feifer
Law Firm: Pollock, Vande Sande & Priddy
Application Number: 6/656,799
Classifications
Current U.S. Class:
D21/48;
D13/32;
D14/114
