Elevator trench drain

Patent metadata

Field	Value
Publication number	US-11795703-B2
Application number	US-202117239466-A
Country	US
Kind code	B2
Filing date	Apr 23, 2021
Priority date	Feb 4, 2021
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

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.

First claim

The invention claimed is:

1. 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.

2. The elevator trench drain of claim 1 , wherein the top surface of the grate is defined by a plate defining at least one aperture therein.

3. The elevator trench drain of claim 1 , wherein the top surface of the grate is defined by a plurality of louvers.

4. The elevator trench drain of claim 1 , wherein the support is configured to selectively contact the base wall at a location spaced a distance from the wall.

5. The elevator trench drain of claim 1 , wherein the support includes a substantially planar baffle extending between the top surface and the base wall.

6. The elevator trench drain of claim 1 , wherein the grate defines a major axis, and wherein the support is substantially parallel to the major axis.

7. The elevator trench drain of claim 1 , wherein the wall is a first wall, the elevator trench drain further comprising a second wall extending from the periphery of the top surface opposite the first wall, and wherein the support selectively contacts the base wall between the first wall and the second wall.

8. The elevator trench drain of claim 1 , wherein the top surface defines a plurality of apertures therein, wherein the top surface defines a major axis, wherein the top surface forms a central spine region extending the entire length of the major axis, and wherein the top surface includes at least one reinforcing region extending between an edge of the periphery and the central spine region.

9. The elevator trench drain of claim 1 , wherein the trench drain can flow 100 GPM.

10. The elevator trench drain of claim 1 , wherein the grate is at least partially positionable within the drain volume.

11. The elevator trench drain of claim 1 , wherein the support is configured to selectively transmit forces between the grate and the base wall.

12. 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.

13. The elevator trench drain of claim 12 , wherein the support includes a central support having a first foot configured to selectively contact the base wall and a second foot configured to selectively contact the base wall, and wherein the central support is positioned so it at least partially extends across an inlet of the conduit.

14. The elevator trench drain of claim 13 , wherein the inlet of the conduit defines an inlet diameter, wherein the first foot is spaced a first distance from the second foot, and wherein the first distance is greater than the inlet diameter.

15. The elevator trench drain of claim 12 , further comprising a plurality of supports each configured to transmit forces between the grate and the base wall, wherein each support includes a foot configured to selectively contact the base wall, and wherein the supports are distributed such that at least two feet fall into a 3.5″ reference circle placed anywhere within the periphery of the top surface.

16. The elevator trench drain of claim 15 , wherein the trench drain can flow 100 GPM.

17. The elevator trench drain of claim 12 , wherein the grate is at least partially positionable within the drain volume.

18. The elevator trench drain of claim 12 , wherein the support is configured to selectively transmit forces between the grate and the base wall.

19. 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.

20. The elevator trench drain of claim 19 , wherein the interior surface has a convex cross-sectional shape taken parallel to the channel axis.

21. The elevator trench drain of claim 19 , wherein the interior surface is parallel to the channel axis proximate the outlet.

22. The elevator trench drain of claim 21 , wherein the interior surface is not parallel to the channel axis proximate the inlet.

23. The elevator trench drain of claim 19 , wherein the trench defines a trench height, and wherein the trench height is no greater than 2.5 inches.

24. The elevator trench drain of claim 19 , wherein the trench drain can flow at least 100 GPM.

25. The elevator trench drain of claim 1 , wherein the conduit includes an opening that is formed by the base wall of the trench.

Assignees

• Zurn Ind Llc

Inventors

• Ghazalah Karam
• Say Christopher J

Classifications

• E04F17/00 Primary

  Vertical ducts; Channels, e.g. for drainage (pipes in general F16L; pipe-line systems F17D {; drainage devices in floors E03F5/04; roof drainage E04D13/04}) · CPC title

• B66B13/301

  Details of door sills · CPC title

• E04F19/10 Primary

  Built-in gratings, e.g. foot-scrapers · CPC title