Elevator trench drain
AssigneeZurn Industries, LLC
InventorsKaram Ghazalah, Christopher J. Say
Life of this patent
Estimating the term…
Abstract
An elevator trench drain including a trench at least partially defining a drain volume, where the trench includes a base wall and at least one side wall extending from the base wall, a conduit coupled to the trench and open to the drain volume, and a grate coupled to the trench. The grate includes a top surface defining a periphery, at least one wall extending from a periphery of the top surface and configured to contact the base wall of the trench, and a support configured to selectively contact the base wall at a location inside the periphery of the top surface.
Claims25
An elevator trench drain comprising:
- a trench at least partially defining a drain volume, wherein the trench includes a base wall and at least one side wall extending from the base wall;
- a conduit coupled to the trench and open to the drain volume, wherein the conduit forms an opening in the base wall;
- and
- a grate coupled to the trench, wherein the grate includes:
- a top surface defining a periphery,
- at least one wall extending from a periphery of the top surface and configured to contact the base wall of the trench, and
- a support, wherein the support includes a contact surface configured to selectively contact the base wall at a location inside the periphery of the top surface, wherein the contact surface is spaced a distance from the periphery to form a gap therebetween where the contact surface does not selectively contact the base wall.
An elevator trench drain comprising:
- a trench having a base wall, wherein the trench at least partially defines a drain volume therein;
- a conduit open to the drain volume via an opening in the base wall, the conduit defining an axis extending therethrough;
- a grate including:
- a top surface having a periphery and defining at least one aperture therethrough,
- a bottom surface opposite the top surface, and wherein when the grate is installed on the trench a grate depth is defined between the bottom surface and the opening in the base wall taken parallel to the axis,
- a first wall extending from the periphery and configured to contact the base wall,
- a second wall extending from the periphery opposite the first wall and configured to contact the base wall, and
- a support configured to selectively contact the base wall at a location between the first wall and the second wall, the support extending parallel to the axis a length substantially equal to the grate depth.
An elevator trench drain comprising:
- a trench at least partially defining a drain volume, the trench including a base wall;
- a grate including a top surface defining at least one aperture therein;
- a conduit open to the drain volume, wherein the conduit includes an interior surface at least partially defining a channel with a channel axis extending therethrough, wherein the channel defines a cross-sectional area taken normal to the channel axis, and wherein the cross-sectional area smoothly and continuously reduces from an inlet towards an outlet of the conduit, wherein the cross-sectional area of the conduit at the inlet is greater than the cross-sectional area of the conduit at all locations between the inlet and the outlet, and wherein the inlet of the conduit is continuous with the base wall;
- and
- wherein the inlet defines an edge transitioning between the base wall and the interior surface, wherein the edge defines a cross-sectional first radius taken along a plane parallel to the channel axis, and wherein the interior surface of the conduit defines a cross-sectional second radius taken along a plane parallel to the channel axis, and wherein the second radius is greater than the first radius.
Dependencies are inferred from the claim text.