Typewriting machines – Key-board or key lever-actuating mechanism – Key-cap or key-stem structure
Patent
1998-08-05
2000-02-01
Yan, Ren
Typewriting machines
Key-board or key lever-actuating mechanism
Key-cap or key-stem structure
400490, 4004951, B41J 508
Patent
active
060195304
ABSTRACT:
The invention is directed to a keyboard where the keys are raised up from a retracted position upon the initialization of usage of the keyboard. An embedded airbag mechanism is self-inflatable to raise keys to the normal operating heights. The keys will be retracted when the airbag is deflated. The rising and retracting of the keys can also be controlled by hinge-like structure. The close and open of the cover of a laptop computer will activate the mechanism to raise and retract the keys on the keyboard.
REFERENCES:
patent: 4795888 (1989-01-01), MacFarlane
patent: 5163765 (1992-11-01), Levy
patent: 5220521 (1993-06-01), Kikinis
patent: 5459461 (1995-10-01), Crowley et al.
patent: 5595449 (1997-01-01), Vitkin
patent: 5694124 (1997-12-01), Wood
patent: 5812116 (1998-09-01), Malhi
Lanzetta Alphonso Philip
Lewis David Andrew
Mok Lawrence Shungwei
Whitehair Stanley Joseph
Chau Minh H.
International Business Machines - Corporation
Morris Daniel P.
Yan Ren
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