Keybar keyboard
First Claim
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1. A keyboard comprising:
- a plurality of keybar actuators, said keybar actuators each comprising;
at least three keys interconnected one to the other and jointly movable in the same common direction about at least one common pivot upon depression of any key of a given keybar actuator, said remaining keybar actuators being independently pivoted to remain stationary during such movement of said given keybar actuator;
switch actuation means responsive to the movement in said common direction of any depressed key of said given keybar actuator to indicate which one of said at least three keys of said given keybar actuator was depressed upon movement of said given keybar actuator in said common direction.
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Accused Products
Abstract
A keyboard (61) includes plural keybar actuators (11) each including plural keys (19, 23, 27, 31) hingedly interconnected (25, 29, 33) and a sensing device (13). The keys of a keybar actuator are all actuated by a common finger (45) in touch typing and therefore are not jointly actuated. Depression of one key causes the keybar actuator (11) to pivot and the sensing device (13) indicates which key is depressed depending upon the amount of keybar actuator rotation. Alternate sensing devices include individual contact switches (79-81) associated with each key.
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Citations
6 Claims
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1. A keyboard comprising:
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a plurality of keybar actuators, said keybar actuators each comprising; at least three keys interconnected one to the other and jointly movable in the same common direction about at least one common pivot upon depression of any key of a given keybar actuator, said remaining keybar actuators being independently pivoted to remain stationary during such movement of said given keybar actuator; switch actuation means responsive to the movement in said common direction of any depressed key of said given keybar actuator to indicate which one of said at least three keys of said given keybar actuator was depressed upon movement of said given keybar actuator in said common direction. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification