Track ball mechanism and switch arrangement

Details Track ball mechanism and switch arrangement Track ball mechanism and switch arrangement

1995-06-07

1997-06-10

Peng, John K.

Coded data generation or conversion

Bodily actuated code generator

345157, 200 5A, H03M 1100

Patent

active

056380615

ABSTRACT:
A track ball mechanism is mounted on a cantilevered portion of a printed circuit board that is supported in a housing. A switch, mounted on the opposite side of the cantilevered portion of the printed circuit board, is operated when it engages a boss on the housing. The ball of the track ball mechanism is operated by a human digit in the usual manner and the switch is operated when pressure on the ball deflects the cantilevered portion of the printed circuit board which causes the switch to engage the boss. The boss is supported on a cantilevered portion of the housing which deflects under excessive loading to protect the switch and track ball mechanism.

REFERENCES:
patent: 4032729 (1977-06-01), Koistinen
patent: 4939508 (1990-07-01), Lawrence
patent: 5237311 (1993-08-01), Mailey
patent: 5367316 (1994-11-01), Ikezaki
patent: 5371553 (1994-12-01), Kawamura
patent: 5414471 (1995-05-01), Saitoh
patent: 5430263 (1995-07-01), English et al.
patent: 5448240 (1995-09-01), Morito
IBM, "Enlarged Curser Key With Trackball," IBM Technical Disclosure Bulletin, Feb. 1991, vol. 33, No. 9, pp. 428-430.

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