| 摘要 |
Seat Operated Switch and Warning System with an air cushion, an air tube leading from the air cushion to an air pressure switch, an electronic circuit to activate devices when a reduction in air pressure is sensed, a digital recordable message device, a radio frequency transmitting device, a housing to contain the pressure switch, digital message device and transmitting device, a matching radio frequency receiving device, and a portable housing to contain said receiving device said housing also containing an audio transducer that creates an audible warning sound activated by said receiving device. A preferred embodiment includes wherein when a person sits on said air cushion the pressure caused by the weight of the person causes said air pressure switch not to activate, but when said person exits off of said air cushion said air pressure switch causes said recorded message to play and causes said transmitter to send a signal to said receiver causing said audio transducer to produce a warning sound.
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