IP Library Granted Patent US 11,179,656
Granted Patent B2
US 11,179,656 · App. 17/074,413 · Granted Nov 23, 2021

Integrated latch/hold-open system for Nefco launder covers

Inventor: Thaddeus J. Knowles (Stuart, FL)
Assignee: NEFCO Systems, Inc.
B01D21/02B01D21/0003B01D21/0006B01D21/2444
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Quick Facts
Patent No.
US 11,179,656
App. No.
17/074,413
Granted
Nov 23, 2021
Kind
B2
Abstract

A system is provided for covering a launder channel of a clarifier tank, the launder channel having a tank wall and launder channel wall. The system comprises a mounting section connected to the launder channel wall, a hinge, and an openable cover panel, movable between a closed and open position. The mounting section includes an angled resting structure for supporting the cover panel, when in the open position, away from the mounting section.

Claims (22)

1. A system for covering a launder channel of a clarifier tank, the launder channel having a tank wall and launder channel wall, said system comprising:

a mounting section connected to said launder channel wall;

a hinge;

an openable cover panel, movable between a closed and open position;

wherein said mounting section includes an angled resting structure, said angled resting structure for supporting said cover panel, when in the open position, away from said mounting section.

2. The system as claimed in claim 1 , wherein said angled resting structure has a locking post configured to be passed through a receiving hole to support said cover panel in said open position.

3. The system as claimed in claim 2 , wherein said locking post has a transverse locking pin.

4. The system as claimed in claim 1 , wherein said angled resting structure has a spring-loaded locking post configured to be passed through a receiving hole to support said cover panel in said open position.

5. The system as claimed in claim 4 , wherein said spring loaded locking post, has a rotatable handle connected by a pin to a shaft and, in turn to a spring, said shaft passing through a barrel, such that said handle can be either in a linear arrangement with said barrel in an open position, and where said handle can be rotated perpendicular to said barrel in a locked position.

6. The system as claimed in claim 1 , wherein said angled resting structure is disposed at an angle away from said mounting section.

7. The system as claimed in claim 6 , wherein said resting structure is angled at 30 degrees from said mounting section.

8. The system as claimed in claim 6 wherein said resting structure is angled to support said cover panel such that it supports said cover panel at the point when said hinge is unfolded to approximately 90°.

9. The system as claimed in claim 6 wherein said resting structure is angled to support said cover panel such that it supports said cover panel at a position that would contact said cover panel when the center of gravity just allows said cover panel to fall towards said mounting section.

10. A system for covering a launder channel of a clarifier tank, the launder channel having a tank wall and launder channel wall, said system comprising:

a mounting section connected to said launder channel wall;

a hinge;

an openable cover panel, movable between a closed and open position;

wherein said mounting section includes a locking post configured to be passed through a receiving hole to support said cover panel in said open position.

11. The system as claimed in claim 10 , wherein said locking post a spring-loaded locking post configured to be passed through a receiving hole to support said cover panel in said open position.

12. The system as claimed in claim 11 , wherein said spring loaded locking post, has a rotatable handle connected by a pin to a shaft and, in turn to a spring, said shaft passing through a barrel, such that said handle can be either in a linear arrangement with said barrel in an open position, and where said handle can be rotated perpendicular to said barrel in a locked position.

13. The system as claimed in claim 10 , wherein said mounting section includes an angled resting structure on which said locking post is mounted, said angled resting structure for supporting said over panel, when in the open position, away from said mounting section.

14. The system as claimed in claim 13 , wherein said angled resting structure is disposed at an angle away from said mounting section.

Assignments (8)
SECURITY INTEREST Recorded May 7, 2026
From: NORTH AMERICAN FILTRATION HOLDINGS LLC; NAF WATER FILTRATION ENTERPRISES LLC; NAF WATER FILTRATION LLC; NAF WATER SOLUTION ENTERPRISES LLC; CHEMTRAC LLC; NAF AQUATICS LLC
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 074586/0152 →
NUNC PRO TUNC ASSIGNMENT Recorded Nov 26, 2025
From: NEFCO SYSTEMS, INC.
To: NAF CONTRCO LLC
Reel/Frame 073041/0957 →
NUNC PRO TUNC ASSIGNMENT Recorded Nov 26, 2025
From: NAF CONTRCO LLC
To: NORTH AMERICAN FILTRATION HOLDINGS LLC
Reel/Frame 073042/0288 →
NUNC PRO TUNC ASSIGNMENT Recorded Nov 26, 2025
From: NORTH AMERICAN FILTRATION HOLDINGS LLC
To: NORTH AMERICAN FILTRATION ENTERPRISES LLC
Reel/Frame 073042/0447 →
NUNC PRO TUNC ASSIGNMENT Recorded Nov 26, 2025
From: NAF WATER FILTRATION ENTERPRISES LLC
To: NAF WATER FILTRATION LLC
Reel/Frame 073042/0701 →
RELEASE OF SECURITY INTEREST Recorded Nov 3, 2025
From: LIVE OAK BANKING COMPANY
To: NORTH AMERICAN FILTRATION HOLDINGS LLC; NAF WATER FILTRATION ENTERPRISES LLC; NAF AQUATICS ENTERPRISES LLC; NAF AQUATICS LLC; CHEMTRAC LLC; NAF WATER SOLUTIONS ENTERPRISES LLC; NAF WATER FILTRATION LLC
Reel/Frame 072760/0571 →
SECURITY INTEREST Recorded Apr 6, 2022
From: NORTH AMERICAN FILTRATION HOLDINGS LLC; NAF WATER FILTRATION ENTERPRISES LLC; NAF WATER SOLUTIONS ENTERPRISES LLC; NAF AQUATICS ENTERPRISES LLC; NAF WATER FILTRATION LLC; CHEMTRAC LLC; NAF AQUATICS LLC
To: LIVE OAK BANKING COMPANY
Reel/Frame 059509/0921 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 22, 2020
From: KNOWLES, THADDEUS J.
To: NEFCO SYSTEMS, INC.
Reel/Frame 054836/0846 →
Continuity (2)
Provisional Application 62972097 · Feb 10, 2020
Related Publication 20210245076A1 · Aug 12, 2021