Patent ID: 8353305

Claim:
A denture treating apparatus comprising: a receptacle base forming a chamber with an open end, the receptacle base including a receptacle base peripheral lip extending around the open end with an upwardly facing surface on the receptacle base peripheral lip; a cover, securable to the receptacle base over the open end of the chamber, to close the chamber, the cover including a cover peripheral lip opposed to the receptacle base peripheral lip when the receptacle base is secured to the open end of the chamber; a seal positioned on the upwardly facing surface of the receptacle base peripheral lip between the receptacle base peripheral lip and the cover peripheral lip; wherein the cover can be rotated relative to the receptacle base to compress the seal to form a pressure tight chamber in which a denture can be cleaned; and wherein the receptacle base comprises a one-piece molded member including a cylindrical outer wall and a bottom wall, the bottom wall being narrower than the section of the cylindrical outer wall forming the receptacle base peripheral lip, and with the upwardly facing surface on which the seal is positionable having a minimum width that is greater than the thickness of the bottom wall, so that deformation under pressure occurs in the bottom wall and not in the vicinity of the seal to maintain seal integrity under pressure.