Hospital signal device

Claim 1

HOSPITAL SIGNALLING APPARATUS COMPRISING: A BASE; A TUBE PROVIDED WITH A MOUTHPIECE AT ONE END THEREOF ADAPTED TO BE POSITIONED ADJACENT THE MOUTH OF A PATIENT; A PLATFORM SPACED ABOVE THE BASE AND SECURED THERETO, SAID PLATFORM HAVING AN APERTURE THERETHROUGH RECEIVING THE OTHER END OF SAID TUBE; AN INFLATABLE BAG RESTING ON THE PLATFORM AND IN FLUID COMMUNICATION WITH SAID OTHER END OF THE TUBE; A VERTICALLY RECIPROCABLE PLUNGER ATTACHED TO SAID BAG AND EXTENDING UPWARDLY THEREFROM; A GENERALLY U-SHAPED COVER HAVING A BIGHT AND A PAIR OF LEGS, SAID BIGHT OVERLYING THE BAG AND HAVING AN OPENING THERETHROUGH RECEIVING THE PLUNGER, THE LEGS BEING SECURED TO THE PLATFORM WITH OPPOSED SIDES OF THE BAG SLIDABLY ENGAGED WITH CORRESPONDING LEGS TO THEREBY PREVENT SUBSTANTIAL LATERAL EXPANSION OF THE BAG WHEN THE LATTER IS INFLATED; A STANDARD ON THE PLATFORM SPACED FROM SAID COVER;