IP Library Granted Patent US 10,132,070
Granted Patent B2
US 10,132,070 · App. 15/142,368 · Granted Nov 20, 2018

Flexible modular trench

Inventors: Eric Madler (Wexford, PA); Collin Mangan (Chambersburg, PA); Jason E. Morris (Erie, PA)
Assignee: Zurn Industries, LLC
E03F5/046E01C11/227E02B13/00E02D17/08E03F3/046E03F2005/0412
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Quick Facts
Patent No.
US 10,132,070
App. No.
15/142,368
Granted
Nov 20, 2018
Kind
B2
Abstract

A flexible modular trench includes an open-faced channel extending along a central axis between a pair of axial ends. The open-faced channel includes a pair of axially-extending shelves connected by a trench wall. The trench wall has a smooth inner surface and a corrugated outer surface. The corrugated outer surface has corrugations extending along a plane perpendicular to the central axis to allow for increased flexibility such that the flexible modular trench is bendable in a direction perpendicular to the central axis.

Claims (16)

1. A flexible modular trench comprising:

an open-faced channel extending along a central axis between a pair of axial ends and including a pair of axially-extending shelves connected by a trench wall, the trench wall having a smooth inner surface and a corrugated outer surface; and

wherein the corrugated outer surface has corrugations extending along a plane perpendicular to the central axis to allow for increased flexibility such that the flexible modular trench is bendable in a direction perpendicular to the central axis and each of the pair of axially-extending shelves include a plurality of support webs, which establish a support plane, and a lip extending away from the support plane.

2. The flexible modular trench of claim 1 , wherein the smooth inner surface has a profile perpendicular to the central axis that remains constant from a first axial end of the pair of axial ends to a second axial end of the pair of axial ends.

3. The flexible modular trench of claim 1 , wherein a trench wall thickness between the smooth inner surface and the corrugated outer surface fluctuates between a maximum thickness and a minimum thickness from a first axial end of the pair of axial ends to a second axial end of the pair of axial ends.

4. The flexible modular trench of claim 3 , wherein the trench wall thickness fluctuates between the maximum thickness and the minimum thickness repetitively from the first axial end to the second axial end.

5. The flexible modular trench of claim 1 , wherein the lip on each of the pair of axially-extending shelves has a corrugated outer lip surface.

6. The flexible modular trench of claim 1 wherein the pair of axially-extending shelves includes multiple pairs of opposing lockdown bar slots.

7. The flexible modular trench of claim 1 , further including a plurality of supports integrally formed with the corrugated outer surface of the trench wall.

8. The flexible modular trench of claim 1 , wherein the smooth inner surface is integral with the corrugated outer surface, such that the smooth inner surface and the corrugated outer surface are a single unitary component.

9. The flexible modular trench of claim 1 , wherein the trench wall has a smooth profile perpendicular to the central axis defined by a continuous curve.

10. The flexible modular trench of claim 1 , wherein the trench wall has a concave profile perpendicular to the central axis defined at least in part by a plurality of angled flat portions.

11. The flexible modular trench of claim 1 , wherein the trench wall has a substantially flat bottom surface.

12. The flexible modular trench of claim 1 , wherein the trench wall has a pointed bottom surface.

13. The flexible modular trench of claim 1 , wherein the flexible modular trench is made of a polymeric material.

14. The flexible modular trench of claim 13 , wherein the polymeric material is at least one of high density polyethylene and polypropylene.

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 Jun 2, 2016
From: MADLER, ERIC; MANGAN, COLLIN; MORRIS, JASON E.
To: ZURN INDUSTRIES, LLC
Reel/Frame 038787/0423 →
Continuity (1)
Related Publication 20170314251A1 · Nov 2, 2017
Cited By (3)
US 12,385,204 US 12,534,899 US 12,546,102