Calling aids
First Claim
1. An emergency-call transmission system, comprising:
- a. a plurality of similar indirectly-coupled transmission sub-systems which each include a portable transmitter to be carried by an individual person at risk, and a stationary sited receiver,each said transmitter having a housing and an actuator mechanism which includes a switch part and a cover part integrally associated with said housing, said cover part being movable between a first position in which it covers the switch part and renders the same non-actuable and another position in which it exposes the switch part for actuation,each said transmitter including a transmission signal generator of multi-element code sequence form,each said receiver including a detector for said code sequence of the respective sub-system transmitter, andeach said receiver being separately located to define an individual zone of effectiveness for said respective transmitter; and
b. a stationary sited monitor unit including a plurality of first call indicators respectively directly connected to said receivers and operable therewith in response to said respective transmitters.
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Accused Products
Abstract
A pocket-size portable transmitter in an emergency call transmission system for geriatric persons has an actuator including a simple switch part such as a push button and a simple cover part movable between a normal closed position covering the switch to prevent accidental actuation and an open position exposing the switch for actuation. In a preferred system a plurality of transmitters are inductively coupled with respective receivers distributed to determine separate areas for use of the transmitters, the transmitters producing multi-element code sequence signals to avoid false alarms from outside interference, and the receivers having wired connections to a central alarm indicator assembly.
43 Citations
6 Claims
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1. An emergency-call transmission system, comprising:
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a. a plurality of similar indirectly-coupled transmission sub-systems which each include a portable transmitter to be carried by an individual person at risk, and a stationary sited receiver, each said transmitter having a housing and an actuator mechanism which includes a switch part and a cover part integrally associated with said housing, said cover part being movable between a first position in which it covers the switch part and renders the same non-actuable and another position in which it exposes the switch part for actuation, each said transmitter including a transmission signal generator of multi-element code sequence form, each said receiver including a detector for said code sequence of the respective sub-system transmitter, and each said receiver being separately located to define an individual zone of effectiveness for said respective transmitter; and b. a stationary sited monitor unit including a plurality of first call indicators respectively directly connected to said receivers and operable therewith in response to said respective transmitters. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification