Z-axis sensing pointing stick with base as strain concentrator

Details Z-axis sensing pointing stick with base as strain concentrator Z-axis sensing pointing stick with base as strain concentrator

1996-11-25

1999-10-12

Swarthout, Brent A.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

74471XY, 345168, G09G 508

Patent

active

059661178

ABSTRACT:
A pointing stick for controlling the positioning, movement and operation of a cursor on the display screen. Strain gages 30 are mounted on the sides of the stick 12 and are made of pressure sensitive strips 32, for electrically changing the resistance of the material in response to the amount of strain applied thereto. A conductive contact bridge 34 for electrically connecting the two strips 32, and conductive contact pads 36 for making electrical contact to electronic circuitry (not shown) are also mounted on the sides of the stick 12. The stick 12 extends through a hole 38 in the base 4 in a Z-axis oriented direction 39, and is held in place by an adhesive bond epoxy 40. Cable 18 is positioned within cavity 16 and adhesively bonded to the cavity wall via adhesive 42. Cable 18 has electrical traces 44 and input/output (I/O) pads 46 mounted thereon. Contact pads 36 are bonded to I/O pads 46 by any suitable bond material 50.

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