Elevator trench drain

Patent metadata

Field	Value
Publication number	US-11674320-B2
Application number	US-202117228448-A
Country	US
Kind code	B2
Filing date	Apr 12, 2021
Priority date	Feb 22, 2016
Publication date	Jun 13, 2023
Grant date	Jun 13, 2023

Abstract

A trench drain includes a trench, a grating seat and a grating hingedly connected to the trench. The trench has a base wall with peripheral side walls extending upwardly therefrom and an outwardly-extending peripheral flange. The grating seat is configured to receive the grating. The peripheral side walls of the trench have a pair of opposing elongated slots formed therein and the grating has a pair of posts on opposing ends thereof. Each of the pair of posts on the grating are received in a respective one of the pair of opposing elongated slots of the trench to establish an axis of rotation.

First claim

What is claimed is:

1. An elevator trench drain comprising:
a trench including:
a base wall,
a drain passageway extending downwardly from the base wall to define a distal end opposite the base wall, wherein the drain passageway includes an upper section defining a first diameter proximate the base wall and a lower section defining a second diameter proximate the distal end, and wherein the ratio of the first diameter to the second diameter is between 1.3 to 1.7,
a plurality of side walls extending upwardly from the base wall to define a first end,
a plurality of secondary walls extending outwardly from the first end of at least a portion of the plurality of side walls to form a grate seat, and

wherein the base wall, plurality of side walls, and plurality of secondary walls together at least partially define a trench volume; and
a grate at least partially positionable within the trench volume, wherein the grate is configured to rest on and be supported by the plurality of secondary walls.

2. The elevator trench drain of claim 1 , wherein the distal end of the drain passageway is configured to be coupled to a 4 inch drain pipe, and wherein the drain passageway is configured to permit the flow of at least 100 gallons per minute of water therethrough.

3. The elevator trench drain of claim 1 , wherein the elevator trench drain is configured to flow at least 100 gallons per minute therethrough.

4. The elevator trench drain of claim 1 , wherein the grate includes a first plurality of bars.

5. The elevator trench drain of claim 1 , wherein the plurality of side walls include a first side wall, a second side wall opposite the first side wall, and a pair of end walls extending between the first side wall and the second side wall, and wherein the plurality of secondary walls extend outwardly from the first side wall and the second side wall.

6. The elevator trench drain of claim 5 , wherein the first wall is longer than at least one end wall of the pair of end walls.

7. The elevator trench drain of claim 5 , wherein the first side wall and the second side wall are parallel one another.

8. The elevator trench drain of claim 1 , wherein the ratio of the first diameter to the second diameter is between 1.4 to 1.6.

9. The elevator trench drain of claim 1 , wherein the upper section and the second section are both cylindrical in shape.

10. The elevator trench drain of claim 1 , further comprising an intermediate section extending between the upper section and the lower section, and wherein the intermediate section includes an approximately 45 degree taper.

11. An elevator trench drain for use adjacent the threshold of an elevator, the elevator trench drain comprising:
a trench including:
a base wall,
a drain passageway extending downwardly from the base wall to define a distal end opposite the base wall, wherein the drain passageway includes an upper section defining a first diameter proximate the base wall, a lower section defining a second diameter proximate the distal end, and an intermediate section extending between the upper section and the lower section, wherein the first diameter is greater than the second diameter, and wherein the axial length of the upper section is greater than the axial length of the lower section,
a first wall extending from the base wall to produce a first distal edge,
a second wall extending from the base wall opposite the first wall to produce a second distal edge,
a pair of end walls extending from the base wall and extending between the first wall and the second wall,
a first grate seat extending outwardly from the first distal edge,
a second grate seat extending outwardly from the second distal edge, and wherein the base wall, the first wall, the second wall, the pair of end walls, the first grate seat, and the second grate seat at least partially define a trench volume; and

a grate at least partially positionable within the trench volume, wherein the grate is configured to rest on and be supported by the first grate seat and the second grate seat.

12. The elevator trench drain of claim 11 , wherein the trench volume forms an open top at an opening height, and wherein the grate defines a top surface, and wherein when the grate is supported by the first grate seat and the second grate seat the top surface is at the opening height.

13. The elevator trench drain of claim 11 , wherein the grate includes a plurality of parallel bars.

14. The elevator trench drain of claim 11 , further comprising one or more anchor straps extending outwardly from the trench proximate the base wall.

15. The elevator trench drain of claim 11 , wherein the axial length of the upper section is greater than the axial length of the intermediate section.

Assignees

• Zurn Ind Llc

Inventors

• Gomo David M
• Diplacido Robert A
• Plachotnik Jaroslaw J
• Morris Jason E

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

• E03F2005/061

  hinged to the body of the gully · CPC title

• E03F5/06

  Gully gratings · CPC title

• E04F17/005

  Lift shafts · CPC title