Breathing equipment such as resuscitators
Patent 4077404 Issued on March 7, 1978. Estimated Expiration Date: 
March 7, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 7, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2764174 3009459 3063461 3473529 Velocity flow control valve for fluid line Patent #: 4010770 InventorAssigneeApplicationNo. 05/733755 filed on 10/19/1976US Classes:128/204.28, Bag or bellows included in control mechanism128/205.13, Respiratory gas supplied from expandable bag, bellows, or squeeze bulb128/205.24, Valve, or valve control, structure137/102Supply and exhaust typeExaminersPrimary: Michell, Robert W.Assistant: Recla, Henry J. Attorney, Agent or FirmAbstractBreathing equipment, for instance a resuscitator, adapted to supply ambient air or alternatively oxygen from a pressurized source, the equipment including non-rebreathing valve mechanism having inspiration and expiration ports, and arranged to assure automatic operation to effect oxygen "blow-by" under conditions of operation tending to close the expiration port, and thereby prevent undesirable build-up of pressure in the patient's lungs. | |
