Silent wearable signalling device with tactile means to prevent false triggering
First Claim
1. A secret signaling device adapted to be carried on the body of a human operator, and built as a generally compact rigid unitary assembly, comprising:
- a base element;
a movable element disposed for displacement relative to said base element by a force exerted by such operator;
transmitting means with battery means to secretly transmit a signal;
switch means operably connected mechanically between said base and movable elements and connected to activate said transmitting means;
a series of detent means including a detent follower and being mechanically connected between said base and movable elements and associated with said switch means and adapted additionally to produce transient reaction forces felt by said operator upon engagement and disengagement to provide him with concealed information of such engagement and disengagement through his tactile sense, andreturn spring means connected between said base and movable elements and having a spring rate sufficient to disengage at least some of said engagements of said detent means;
at least one of said series of detent means being disposed to engage and disengage before the operation of said switch means to tactilly inform said operator of the approach of activation of said transmitting means.
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Accused Products
Abstract
A concealable signaling, e.g., radio alarm, device worn on the person and actuated by concealed switch means that include mechanical detents. The engagement of the detents provides secret tactile information back to the wearer. The presently preferred embodiment is a miniature radio alarm transmitter concealed in a device which also serves as a belt buckle. The wearer distends his waist to actuate the transmitter. Tension in the belt moves an element through one or more detent engagements before it activates the transmitter. These detent engagements make transient changes in the belt tension which are felt by the wearer; these inform the wearer of impending activation, so preventing false transmitter signals or alarms.
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Citations
14 Claims
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1. A secret signaling device adapted to be carried on the body of a human operator, and built as a generally compact rigid unitary assembly, comprising:
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a base element; a movable element disposed for displacement relative to said base element by a force exerted by such operator; transmitting means with battery means to secretly transmit a signal; switch means operably connected mechanically between said base and movable elements and connected to activate said transmitting means; a series of detent means including a detent follower and being mechanically connected between said base and movable elements and associated with said switch means and adapted additionally to produce transient reaction forces felt by said operator upon engagement and disengagement to provide him with concealed information of such engagement and disengagement through his tactile sense, and return spring means connected between said base and movable elements and having a spring rate sufficient to disengage at least some of said engagements of said detent means; at least one of said series of detent means being disposed to engage and disengage before the operation of said switch means to tactilly inform said operator of the approach of activation of said transmitting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification