Plumbing fixture and system

摘要

A plumbing system includes a tub having a drain fixture lodged within a floor drain opening. The drain fixture comprises a body member beneath the floor and a drain cap member inserted into an exposed open inlet of the body member. The body member has a passageway extending between the open inlet and a downstream open outlet in communication with a sewer. A pipe connected to the body member between the inlet and outlet has one end in communication with the passageway and another end in communication with an overflow opening in the tub above the drain opening to vent the passageway. The drain cap member moves between a first position allowing liquid to flow through the passageway and a second position preventing the flow of liquid through the passageway.

主权项

1. A plumbing drain fixture comprising:
a body member including a passageway extending between an open inlet and an open outlet, the inlet having an internal thread; a pipe connected to the body member at a location between the inlet and outlet and in communication with the passageway, a section of the passageway between the location at which the pipe is connected to the body member and the outlet being configured to increase the velocity of liquid flowing through the passageway to produce within the passageway a Bernoulli effect; wherein the passageway has a first portion, a second portion extending towards the outlet from the first portion, and a third portion extending towards the outlet from the second portion; wherein the pipe is connected to the passageway at the first portion; wherein the first portion has a first diameter, wherein the passageway tapers in the second portion to a second diameter less than the first diameter, and wherein the passageway increases to a third diameter greater than the second diameter in the third portion; a cylindrical collar member having an open entrance end and an opposed open exit end, an externally threaded surface at the entrance end, and a predetermined inside diameter;wherein the externally threaded surface of the cylindrical collar member and the internal thread of the body member are separate components adapted to be screwed together at the inlet of the body member upon attachment of the fixture to a drain opening in a floor of a tub;
a drain cap member adapted to be inserted into the entrance end of the collar member;wherein the drain cap member includes a solid cover and a cylindrical wall member with at least one opening therein, the wall member extending from an underside of the solid cover into the passageway upon insertion of the drain cap member into the body member through the collar member screwed to the body member; andwherein the wall member has a predetermined diameter substantially equal to the predetermined inside diameter of the collar member yet with sufficient clearance for the drain cap member to move between a first position allowing liquid to flow through the opening into the passageway and a second position preventing the flow of liquid; and
a drain cap member actuator for the drain cap member having a portion thereof in the passageway and engaging the drain cap member upon insertion of the drain cap member into the passageway and another portion engaging a manual actuator accessible to a user while in the tub;wherein the drain cap member actuator is mounted to the body member to move the drain cap member between the first and second positions.