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Bird Forrest Morton, Pohndorf Henry Louis: Respiratory apparatus. June 15, 1971: US3584621 (62 worldwide citation)

Respiratory apparatus having a patient adapter in the form of a mouthpiece and a servocontrol valve assembly and exhaust valve assembly mounted on the mouthpiece and carried by the mouthpiece for controlling the inhalation phase and the exhalation phase of the respiratory apparatus.


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Bird Forrest Morton, Pohndorf Henry Louis: Apparatus for mixing gases. April 17, 1973: US3727627 (12 worldwide citation)

A method and apparatus for mixing gases from separate pressurized gas circuits for use in applications such as medical respirators. The pressures of the gases in the two circuits are accurately balanced to provide an equal pressure drop across a differential mixing valve for precise control of the r ...


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Bird Forrest Morton, Pohndorf Henry Louis: Improvements in or relating to mechanical ventilators for the lungs. Bird F M, Pohndorf Henry Louis, November 18, 1970: GB1212529-A (3 worldwide citation)

1,212,529. Artificial respiration. F. M. BIRD and H. L. POHNDORF. 16 Feb., 1968 [28 Feb., 1967], No. 7630/68. Heading AST. A mechanical respiratory ventilator comprises an adapter 124 to supply gas to a patient and connected to a bellows 28, means for delivering gas to the bellows, means 91 for nebu ...


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Bird Forrest Morton, Pohndorf Henry Louis: Improvements in or relating to anesthesia apparatus and resuscitators. Bird F M, Pohndorf Henry Louis, November 18, 1970: GB1212528-A (1 worldwide citation)

1,212,528. Respiratory apparatus. F. M. BIRD and H. L. POHNDORF. 7 Dec., 1967 [14 Dec., 1966], No. 55619/67. Heading A5T. A breathing bag assembly 28 comprises an inner bag 31 inside a flexile outer bag 32, the inner bag having an opening for connection with the patient and the outer bag having an o ...


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Bird Forrest Morton, Pohndorf Henry Louis: Improvements in or relating to lung ventilating apparatus. Bird F M, Pohndorf Henry Louis, November 18, 1970: GB1212527-A

1,212,527. Lung ventilators. F. M. BIRD and H. L. POHNDORF. 7 Dec., 1967 [14 Dec., 1966], No. 55618/67. Heading A5T. A lung ventilating assembly in which the expiratory and inspiratory times are each con trolled by a metering valve 52 supplying fluid to a fluid-operated means (e.g. a diaphragm 33) c ...


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Bird Forrest Morton, Pohndorf Henry Louis: Manual positive pressure breathing device. Bird F M, Pohndorf Henry Louis, May 24, 1972: GB1275687-A

1275687 Respiratory apparatus F M BIRD and H L POHNDORF 22 July 1970 [22 Aug 1969] 35482/70 Heading A5T [Also in Division F2] A device forming part of a respiratory apparatus comprises a venturi assembly 21 having a venturi passage 27 having at one end passages 31 open to the atmosphere and a jet no ...