Matches 51 - 77 out of 77 < 1 2


Match Document Document Title
3971368 Combined oxygen mask and smoke goggle apparatus with automatic flush valve  
Combined oxygen mask and smoke goggle apparatus particularly adapted for use by members of flight crews is provided in which a valve having a shiftable actuating element and including means...
3834384 SURGICAL MASK WITH ADHESIVE VAPOR BARRIER  
The invention provides an improved surgical mask which provides a vapor barrier between the mouth and nostrils which are covered by the mask during the use of the same, and the area proximate the...
3721236 DIVING MASK WITH TRANSPARENT FACE PLATE  
This invention relates to diving masks with a snorkel wherein an exhaling tube is led from the mouth through the snorkel to the end of the snorkel to prevent fogging inside the mask.
3716053 BREATHING APPARATUS  
A breathing apparatus having a breathing mask which consists of an outer mask provided with eye pieces and an inner mask enclosing the mouth and the nose. A gas chamber is connected with the mask...
3680555 PROTECTIVE MASK WITH ANNULAR FLUSHING CHAMBER  
A protective mask includes a double sealing rim or frame which defines a passageway for exhaled air which extends around the periphery of the face of the wearer to a space, for example, defined at...
3680556 DIVING HELMET  
A diving helmet comprising a plastic or elastomeric hood having open cellular foam for conformance to a diver's lateral facial configuration, and connected to a rigid shell having a viewing port,...
3667460 VENTILATION SYSTEM FOR INFLATABLE PRESSURE GARMENTS  
An improved ventilation system for a space suit or other inflatable pressure garment assembly, such as used by astronauts and by pilots of high altitude vehicles operating in an environment having...
3602219 RESPIRATOR HAVING SOUND DIAPHRAGM PROTECTIVE CAVITY  
A respirator or gas mask includes an inlet with an inlet check valve permitting flow of inhalation air in the mask body past a front viewing window. An inner auxiliary mask is formed within the...
3563236 FACE PIECES FOR PROTECTIVE MASKS  
A face piece for a protective mask is made from a natural or synthetic rubber or a plastic material and has a solid sealing rib projecting from the inner side of the face piece to engage the...
3550588 PROTECTIVE MASKS  
3480033 INHALATION-EXHALATION VALVE  
3293659 High altitude helmet  
3276034 Protective shield attachment for face masks  
3227159 Mask for the protection against poison gases  
3185149 Protective gear  
3181531 Rubber gas mask  
3024341 Heated face plate for pilot's helmet  
3020911 Mask  
2910979 Canisterless gas mask  
2908272 Gas mask breathing resistance  
2898908 Field protective mask  
2891540 Respiratory face mask  
2888920 Face mask  
2835250 Mask for breathing apparatus  
2810386 Oxygen masks embodying means for ventilating goggles  
2800901 Protective hood  
2792000 Face mask for use in dust-laden or other contaminated conditions  

Matches 51 - 77 out of 77 < 1 2