B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
197/58
B41J 5/08 (2006.01) B41J 5/14 (2006.01) B41J 5/26 (2006.01)
Patent
CA 1130747
KEY MECHANISM HAVING A SNAP ACTION ABSTRACT OF THE DISCLOSURE A key mechanism arrangement for use in a keyboard of a business machine wherein a snap motion occurs in response to depression of a keylever. An elongated resilient member is pivotally supported intermediate its ends on a member. One end of the resilient member is coupled to the keylever for bias support thereof, while the free end cooperates with a restraining means, to first prevent its movement during initial keylever depression to store energy and then quickly released, causing the free end to snap against a member of a utilization apparatus. The resilient member restores the key mechanism arrangement to a rest position upon release of the keylever. Four embodiments are disclosed all having the same mode of operation. In three of the embodiments the restraining means includes a means of latching the free end of the resilient member and then selectively releasing that end actuated by further depression of the keylever. In the fourth embodiment the free end of the resilient member is held by a magnet until the accumulation of energy is sufficient to overcome the magnetic force. Structure is provided on the keylever for uniquely coupling one end of the resilient member to the keylever for movement there with.
337287
Gowling Lafleur Henderson Llp
Scm Corporation
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