초록 ▼

An improved floor drain for buildings, basements, exterior paved areas, and the like. The invention provides floor drain assemblies and floor drains providing improved drainage performance, particularly where drainage is an irregular occurrence, and having unprecedented simplicity and reliability. F

An improved floor drain for buildings, basements, exterior paved areas, and the like. The invention provides floor drain assemblies and floor drains providing improved drainage performance, particularly where drainage is an irregular occurrence, and having unprecedented simplicity and reliability. Floor drains according to the invention comprise side port drain valves adapted for disposition within floor drains, the drain valves generally comprising non-horizontal drain ports, one or more sealing surfaces disposed between the ports and a drain conduit, a stop adapted for sealing engagement of the sealing surface, and means to urge the stop into sealing engagement of the sealing surface. Floating, spring-loaded, or flexible elastic valves stops, among others, may be used; any of them may be tailored for opening under a selected hydrostatic pressure. Use of side port drains according to the invention permits drainage through the drain conduit while preventing back flow from the drain of undesirable or unwanted gasses. Drain assemblies according to the invention are preferably installable in existing drain structures, and easily removable for maintenance or replacement.

대표청구항 ▼

[ We claim:] [1.]1. A method for fabricating a side port floor drain apparatus for admitting liquid from a draining surface into a drain conduit, and for preventing discharge of waste gas from the drain conduit into the atmosphere in response to a higher pressure in the drain conduit than at the dra

[ We claim:] [1.]1. A method for fabricating a side port floor drain apparatus for admitting liquid from a draining surface into a drain conduit, and for preventing discharge of waste gas from the drain conduit into the atmosphere in response to a higher pressure in the drain conduit than at the draining surface, the fabrication method comprising the steps of:providing at least one drain port;providing each said drain port with a non-horizontal drain sealing surface;disposing a stop between the non-horizonital drain sealing surface and the drain conduit, the stop being adapted for sealing engagement of the drain sealing surface; andproviding a means to urge the stop into sealing engagement with the drain sealing surface, the means adapted to permit disengagement of the stop from the scaling surface as liquid enters the floor drain, reby drainage of the liquid through the drain port is permitted, and backflow of gasses from the drain conduit is prevented after liquid has drained.