Hospital bed with pressure chamber

Claim 1

IN A HOSPITAL BED FOR TREATMENT OF PATIENTS AT PRESSURES OTHER THAN ATMOSPHERIC, THE BED COMPRISING A RIGID LOWER PART, A RIGID UPPER PART CO-OPERATING WITH THE LOWER PART TO FORM THEREWITH A CLOSED CHAMBER FOR TOTALLY ENCLOSING A PATIENT WHO CAN RECEIVE TREATMENT THEREIN AT PRESSURES UP TO THREE ATMOSHPHERES, MEANS FOR SEALING AND HOLDING THE TWO PARTS TOGETHER, SAID SEALING MEANS INCLUDING A STRAP AROUND THE PERIPHERAL PORTION OF ONE OF SAID PARTS AND CO-OPERATING WITH THE PERIPHERAL PORTION OF THE OTHER PART TO PERMIT THE LATTER TO BE BROUGHT INTO CLOSED RELATIONSHIP WITH SAID ONE PART IN A FIRST POSITION OF THE STRAP AND TO CLAMP SAID PARTS IN A SECOND POSITION OF THE STRAP, MEANS ON THE OTHER OF SAID PARTS CO-OPERATING WITH THE STRAPS MEANS IN ITS SECOND POSITION, MEANS FOR SHIFTING SAID STRAP AROUND THE PERIPHERY OF SAID ONE PART FROM ONE POSITION TO THE OTHER AND VICE VERSA, A TRANSPARENT DOMED PORTION IN THE UPPER PART FOR ENABLING A PATIENT SEALED IN THE BED TO SIT UP AND SEE OUT, AND AN INLET IN ONE OF SAID PARTS FOR THE INTRODUCTION OF GAS INTO SAID CHAMBER.