IP Library Granted Patent US 10,570,628
Granted Patent B2
US 10,570,628 · App. 16/271,324 · Granted Feb 25, 2020

Elevator trench drain

Inventors: David M. Gomo (Lake City, PA); Robert A. DiPlacido (Erie, PA); Jaroslaw J. Plachotnik (Jamestown, NY); Jason E. Morris (Erie, PA)
Assignee: ZURN INDUSTRIES, LLC
E04F17/00B66B13/301E03F5/0407E03F5/06E03F2005/061E04F17/005
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Quick Facts
Patent No.
US 10,570,628
App. No.
16/271,324
Granted
Feb 25, 2020
Kind
B2
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.

Claims (20)

1. An elevator trench drain comprising:

a trench having a base wall with peripheral side walls extending upwardly therefrom and an outwardly-extending peripheral flange;

a grating seat disposed between an upper peripheral lip and the base wall; and

a grating hingedly connected to the trench;

wherein the grating seat is configured to receive the grating and 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 and wherein 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, and

wherein the axis of rotation is movable relative to the trench; and

wherein the trench includes a drain passageway extending downwardly therefrom, and wherein the drain passageway is configured to permit the flow of 100 gallons per minute or more of water therethrough.

2. The elevator trench drain of claim 1 , wherein axial twisting of the axis of rotation aligns the posts relative to the slots for a hinged connection between the grating and the trench.

3. The elevator trench drain of claim 2 , wherein the grating is opened at the hinged connection.

4. The elevator trench drain of claim 1 , wherein the grating and the grating seat are rectangularly shaped.

5. The elevator trench drain of claim 1 , wherein the grating includes a grid having a plurality of lengthwise extending bards joined to a plurality of widthwise extending supports.

6. The elevator trench drain of claim 5 , wherein the grid includes a plurality of shapes formed by the lengthwise extending boards and the widthwise extending supports.

7. The elevator trench drain of claim 1 , wherein the grating is made of a stainless steel wire grating.

8. The elevator trench drain of claim 1 , wherein the grating includes an open area of grating.

9. The elevator trench drain of claim 8 , wherein the open area is 64.9 square inches per linear foot of grating.

10. The elevator trench drain of claim 8 , wherein the open area is 35.9 square inches per linear foot of grating.

11. The elevator trench drain of claim 1 , wherein the grating has a height of 29/32 inches.

12. The elevator trench drain of claim 1 , wherein the grating has a width of 11.375 inches.

13. The elevator trench drain of claim 1 , wherein the elongated slots are sized so that the posts can be inserted into and removed from the slots by moving the axis of rotation relative to the trench.

14. The elevator trench drain of claim 1 , wherein the trench defines a trench volume, and wherein the slots are at least partially positioned within the trench volume.

Assignments (8)
NOTICE OF SUCCESSION OF AGENCY OF REEL/FRAME 057893/0121 Recorded Feb 20, 2026
From: UBS AG, STAMFORD BRANCH, AS PRIOR AGENT (F/K/A CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH)
To: JPMORGAN CHASE BANK, N.A., AS SUCCESSOR AGENT
Reel/Frame 074945/0935 →
NOTICE OF SUCCESSION OF AGENCY OF REEL/FRAME 066293/0879 Recorded Feb 20, 2026
From: UBS AG, STAMFORD BRANCH, AS PRIOR AGENT (F/K/A CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH)
To: JPMORGAN CHASE BANK, N.A., AS SUCCESSOR AGENT
Reel/Frame 074947/0479 →
CONVERSION Recorded Jan 16, 2024
From: ZURN INDUSTRIES, LLC
To: ZURN INDUSTRIES, LLC
Reel/Frame 066336/0603 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 16, 2024
From: ZURN INDUSTRIES, LLC
To: ZURN WATER, LLC
Reel/Frame 066337/0918 →
RELEASE OF INTELLECTUAL PROPERTY SECURITY INTEREST IN PATENTS AT REEL 057893, FRAME 0121 Recorded Dec 19, 2023
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
To: ZURN INDUSTRIES, LLC (F/K/A ZURN INDUSTRIES, INC.)
Reel/Frame 066067/0937 →
PATENT SECURITY AGREEMENT Recorded Dec 18, 2023
From: ZURN WATER, LLC
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
Reel/Frame 066293/0879 →
SECURITY INTEREST Recorded Oct 8, 2021
From: AMERICAN DRYER LLC; GREEN TURTLE AMERICAS LTD.; WORLD DRYER CORPORATION; ZURN PEX, INC.; ZURN INDUSTRIES, LLC
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
Reel/Frame 057893/0121 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 8, 2019
From: GOMO, DAVID M.; DIPLACIDO, ROBERT A.; PLACHOTNIK, JAROSLAW J.; MORRIS, JASON E.
To: ZURN INDUSTRIES, LLC
Reel/Frame 048282/0162 →
Continuity (4)
Continuation 15689896 · Aug 29, 2017
Continuation 15262179 · Sep 12, 2016
Provisional Application 62298159 · Feb 22, 2016
Related Publication 20190169860A1 · Jun 6, 2019
Cited By (7)
US 1,070,024 US 1,070,025 US 1,070,026 US 1,070,027 US 12,404,683 US 12,534,899 US 12,546,102