Baths – closets – sinks – and spittoons – Seat and lid – Hinges
Patent
1997-07-18
1999-03-23
Phillips, Charles E.
Baths, closets, sinks, and spittoons
Seat and lid
Hinges
0042461, A47K 1312, A47K 1310
Patent
active
058843426
ABSTRACT:
A toilet hinge apparatus that automatically initiates a regulated closing of the toilet lid and seat when the toilet is flushed providing a safety barrier for child and pet protection as well as for sanitary and aesthetic reasons. A pressure tee attached to the ballcock or tank valve thread at the water supply inlet to the toilet tank designed to amplify the difference between a low pressure when the toilet is flushed and the tank is filling and a high pressure when the tank is full and the tank valve is closed. An internal expanding brake mechanism that creates friction between the rotating parts of the hinge assembly relative to this pressure making the toilet seat and lid rotate easier at low tee pressure than at high tee pressure. A pair of independent torsion springs that force an open toilet lid and seat to close when the toilet is flushed and frictional braking is released with one spring providing torque to the toilet seat, counterbalancing it so that it will descent but not strike the china bowl unless assisted by the descending toilet lid and with the other spring partially counterbalancing the weight of the toilet lid. An internal displacement of a viscous dampening fluid to retard the opening and closing of the toilet lid. A check ball designed to seal the pressure tube and provide high pressure protection of the hinge assembly and prevent water leakage in the advent of a leak in the hinge assembly. An isolation bladder that prevents contamination of the water supply by the non-freezing fluid in the hinge assembly cavity that transfers the pressure to the expanding frictional brake surfaces that is volumetrically adjustable to establish the checking pressure for the check ball.
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