초록 ▼

A self-enclosed workstation box having side access ports with built-in sleeve guards, a removable viewing shield, a storage bin inside of the box with a holder on the bin cover for storing and supporting supplies thereon. The viewing shield can be hinged to the box for allowing access to the entire

A self-enclosed workstation box having side access ports with built-in sleeve guards, a removable viewing shield, a storage bin inside of the box with a holder on the bin cover for storing and supporting supplies thereon. The viewing shield can be hinged to the box for allowing access to the entire interior of the box. Arm rests can be located inside for supporting any one of the hands of the operators and users of the box. A bottom port can allow for noxious fumes and debris to be removed from the box by a fan, and a filter the latter of which can prevent the fumes from passing into the atmosphere outside of the box.

대표청구항 ▼

A self-enclosed workstation box having side access ports with built-in sleeve guards, a removable viewing shield, a storage bin inside of the box with a holder on the bin cover for storing and supporting supplies thereon. The viewing shield can be hinged to the box for allowing access to the entire

A self-enclosed workstation box having side access ports with built-in sleeve guards, a removable viewing shield, a storage bin inside of the box with a holder on the bin cover for storing and supporting supplies thereon. The viewing shield can be hinged to the box for allowing access to the entire interior of the box. Arm rests can be located inside for supporting any one of the hands of the operators and users of the box. A bottom port can allow for noxious fumes and debris to be removed from the box by a fan, and a filter the latter of which can prevent the fumes from passing into the atmosphere outside of the box. hich the other inlet port is connected to the outlet port. 16. The valve of claim 14, wherein the control circuitry has means for varying the speed of rotation of the shutter plate. 17. A valve for controlling gas flow to ventilator or physiotherapy apparatus, comprising a body having first and second inlet ports and an outlet port, and a single shutter plate rotatable with respect to the body and adapted selectively to interconnect the inlet ports to the outlet port, whereby the single shutter plate is operable on rotation in a single sense to connect alternately the first inlet port to the outlet port and the second inlet port to the outlet port, and the body comprises a first body portion defining the inlet ports and a second body portion defining the outlet port, and the first body portion defines two chambers, each in communication with a respective one of the inlet ports, each chamber having a respective opening, and the shutter plate cooperates with the openings to effect connection of the outlet port and the inlet ports, and the shutter plate is generally circular, has a central axis of rotation, and defines at least two plate openings for cooperation with the openings of the body, whereby communication between the outlet port is established with the inlet ports, and each plate opening substantially corresponds with each chamber opening. 18. A valve for controlling gas flow to ventilator or physiotherapy apparatus, comprising a body having first and second inlet ports and an outlet port and a shutter plate rotatable with respect to the body and adapted selectively to interconnect the inlet ports to the outlet port, with the shutter plate operable on rotation in a single sense to connect alternately the first inlet port to the outlet port and the second inlet port to the outlet port, and wherein upon one full rotation of the shutter plate, the first inlet port is coupled to the outlet port, the second inlet port is coupled to the outlet port, the first inlet port is coupled again to the outlet port and the second inlet port is coupled again to the outlet port, wherein the body comprises a first body portion defining the inlet ports and a second body portion defining the outlet port, wherein the first body portion defines two chambers, each in communication with a respective one of the inlet ports, each chamber having a respective opening, and the shutter plate cooperates with the openings to effect connection of the outlet port and the inlet ports, and wherein the shutter plate is generally circular, has a central axis of rotation, and defines at least two plate openings for cooperation with the openings of the body, with communication between the outlet port established with the inlet ports. 19. Apparatus for use in the ventilation of the lungs of a patient, comprising an enclosure for receiving at least the chest region of the patient's body, at least one blower and a valve for controlling gas flow to ventilator or physiotherapy apparatus, comprising a body having first and second inlet ports and an outlet port, and a single shutter plate rotatable with respect to the body, the body comprising a first body portion defining the inlet ports and a second body portion defining the outlet port, and the first body portion defining two chambers, each in communication with a respective one of the inlet ports, whereby the single shutter plate is operable on rotation in a single sense to alternately open the first inlet port and the second inlet port to the outlet port, and the single shutter plate is generally circular and has a central axis of rotation, characterized in that the single shutter plate defines at least two plate openings and each chamber has two further openings such that when the single shutter plate connects one inlet port to the outlet port, the single shutter plate connects the respective other inlet port to the outside of the valve. 20. An oscillator for producing a pressure waveform, comprising a waveform