Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1988-10-31
1990-07-03
Oberley, Alvin
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340709, 74471XY, G06F 3033
Patent
active
049395084
ABSTRACT:
A point and select device is disclosed in which a sphere protruding from one major surface of a housing can serve as either a trackball or the moving element in a mouse. Actuators on either side of the device are selected according to the use of the device. The sense of motion for up/down is reversed between the two modes of operation.
REFERENCES:
patent: D291318 (1987-08-01), Kim
patent: 4129982 (1978-12-01), Cruz
patent: 4559532 (1985-12-01), Hosogoe
patent: 4562347 (1985-12-01), Hovey et al.
patent: 4804949 (1989-02-01), Faulkerson
Diaz Oscar R.
Erdmann, Jr. Robert E.
Lawrence James G.
Emtek Health Care Systems, Inc.
Oberley Alvin
Wille Paul F.
Wu Xigo
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