Alarm
OwnerAlan Howard Benson, Warwick Jonathan David Campinventors
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Abstract
An alarm system comprising a resilient foam pad contained within a cover, said cover being provided with air flow detector arranged to detect air leaving the cover in response to the application of a weight to the foam pad, and/or air entering the cover in response to the removal of at least some of said weight, and signalling means responsive to said detector. This system is particular useful for monitoring the movements of patients including babies, in and out of their beds or cots.
Claims23
An alarm system comprising a resilient foam pad contained within a cover, said cover being provided with air flow detector arranged to detect air leaving the cover in response to the application of a weight to the foam pad, and/or air entering the cover in response to the removal of the said weight, and signalling means responsive to said detector.
An alarm system comprising a resilient foam pad contained within a gas-impermeable cover, said cover being provided with a non-return pressure release valve, arranged to allow air to be released from the cover when pressure is applied to the pad, and a pressure/vacuum switch arranged to open to allow air to enter the cover when the air pressure within the cover drops below ambient pressure, and signalling means responsive to the opening of the pressure/vacuum switch or the pressure release valve, or to the movement of air through said pressure/vacuum switch or pressure release valve.
Canceled.
Dependencies are inferred from the claim text.