Joystick control unit

Details Joystick control unit Joystick control unit

1985-07-22

1987-08-11

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250229, G01B 1126, G01D 530

Patent

active

046863613

ABSTRACT:
The invention relates to a joystick control unit featuring a joystick shaft member with a reflective surface on its bottom portion which is parallel to the X-Y plane when the shaft is placed in a centered upright position. The reflective surface tilts as the shaft member is moved through the X-Y plane and reflects the radiant energy emitted from a source mounted beneath the shaft member and directs it towards a plurality of radiant energy detectors selectively arranged beneath the reflective surface. The shaft member includes a movable inner member with at least one aperture in an upstanding sidewall which selectively permits or prevents the transmission of radiant energy through the aperture for purposes of controlling a switch function.

REFERENCES:
patent: 3432671 (1969-03-01), Edmonds
patent: 3811047 (1974-05-01), Shragel
patent: 3881106 (1975-04-01), Pocker et al.
patent: 3886544 (1975-05-01), Narodny
patent: 4459022 (1984-07-01), Morey
patent: 4480184 (1984-10-01), Ely
"Miniature Two-Axis Joystick Controller"; Nasa Tech Briefs, Fall 1982.

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