Mouth evacuator

Claim 1

A MOUTH EVACUATOR COMPRISING: A MAIN RIGID TUBULAR CONDUIT ADAPTED TO DEPEND FROM THE FRONT OF THE MOUTH WITH THE LOWER END THEREOF ADAPTED FOR CONNECTION TO A SUCTION LINE AND WITH THE UPPER END THEREOF EXTENDING OVER AND RESTING ON THE UPPER FRONT EDGE OF THE LOWER TEETH AND FORMED TO BE LOOSELY RESTRICTED AGAINST FORE AND AFT MOVEMENT RELATIVE TO THE TEETH, SAID CONDUIT HAVING THEREON A PAIR OF RELATIVELY SHORT LATERALLY EXTENDING TUBULAR STEMS DISPOSED FORWARD OF THE TEETH AND DIRECTED TO OPPOSITE SIDES OF THE MOUTH, SAID CONDUIT FURTHER HAVING A PAIR OF RELATIVELY SHORT LATERALLY EXTENDING TUBULAR STEMS DISPOSED INTERNALLY OF THE LOWER ROW OF TEETH AND DIRECTED TO OPPOSITE SIDES OF THE MOUTH; TUBULAR EXTENSIONS COMPOSED OF FLEXIBLE MATERIAL SUPPORTED ON THE STEMS, THE TUBULAR EXTENSIONS SUPPORTED ON THE LATERALLY DISPOSED STEMS FORWARD OF THE TEETH BEING ADAPTABLE TO SHAPE THEMSELVES TO THE OUTER CURVATURE OF THE LOWER ROW OF TEETH AND HAVING SPACED APART SUCTION OPENINGS THROUGHOUT THE LENGTH THEREOF, EACH OF THE TUBULAR EXTENSIONS ON THE STEMS PROJECTING INTERNALLY OF THE TEETH FORMED WITH A CONNECTING PORTION ADJACENT TO THE RESPECTIVE STEM, FROM THENCE TO A DOWNWARDLY INCLINED PORTION LYING ADJACENT THE FORWARD WALL OF THE MOUTH, AND FROM THENCE TO A REARWARDLY DIRECTED LATERAL PORTION LYING ON THE FLOOR OF THE MOUTH, THE LATTER PORTION HAVING SPACED APART SUCTION OPENINGS THROUGHOUT ITS LENGTH AND BEING ADAPTED TO FLEX RELATIVE TO THE INCLINED PORTION WHEREBY THE REARWARDLY DIRECTED PORTION WILL RISE AND FALL ACCORDING TO THE RISE AND FALL OF THE FLOOR OF THE MOUTH.