• US 3,753,292 A
  • Filed: 04/22/1971
  • Issued: 08/21/1973
  • Est. Priority Date: 04/22/1971
  • Status: Expired due to Term
First Claim
Patent Images

1. In a saliva ejector:

  • an elongate support frame having a curved portion at one end adapted to be placed in an oral cavity, said frame being formed with a longitudinal channel extending between end portions of the frame, said channel being open along one side including an outer peripheral side of said curved portion so as to laterally receive a flexible conduit through the open side into a seated position in the channel, a connection base at the other end of the frame comprising a tubular portion establishing a telescopic flow connection, with the adjacent end portion of said flexible conduit, means at said one end of the support frame for embracing the opposite end portion of said conduit and enabling adjusting movements of the conduit therein, said conduit being of a length to provide, when seated in said channel, a portion at said opposite end of said conduit extending beyond the embracing means so as to position an ejector tip thereon, outwardly of said embracing means, and enable adjusting movements to vary its operative position in accordance with said conduit adjusting movements, and upon movement of the tip towards the embracing means enabling distortion of the conduit outwardly away from its seated position through the open side of the channel, and cooperating stop means on said embracing means and said ejector tip to limit movement of said ejector tip toward the embracing means.

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