IP Library Granted Patent US 11,390,549
Granted Patent B2
US 11,390,549 · App. 16/491,820 · Granted Jul 19, 2022

Manual filter press with displaceable follower stop

Inventors: Chad Massel (Caledonia, MI); Jason Letherby (Muskegon, MI)
Assignee: Evoqua Water Technologies LLC
C02F11/122B01D25/12B01D25/19B01D25/21B01D2201/202
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Quick Facts
Patent No.
US 11,390,549
App. No.
16/491,820
Granted
Jul 19, 2022
Kind
B2
Abstract

A filter press includes a plurality of filter plates, a hydraulic cylinder, a follower plate through which the hydraulic cylinder is configured to apply pressure to the plurality of filter plates, and a spacer rod configured to transfer force from the hydraulic cylinder to the follower plate. The spacer rod is coupled to the follower plate by a moveable support that is displaceable between a home position in which the spacer rod is aligned with the hydraulic cylinder and a disengaged position in which the spacer rod is unaligned with the hydraulic cylinder.

Claims (13)

1. A filter press comprising:

a plurality of filter plates;

a hydraulic cylinder;

a follower plate through which the hydraulic cylinder is configured to apply pressure to the plurality of filter plates; and

a spacer rod configured to transfer force from the hydraulic cylinder to the follower plate, the spacer rod being coupled to the follower plate by a moveable support including a swing arm coupled to a face of the follower plate by a pivot, the swing arm configured to rotate about the pivot in a plane defined by the face of the follower plate and to be displaceable between a home position in which the spacer rod is aligned with the hydraulic cylinder and a disengaged position in which the spacer rod is unaligned with the hydraulic cylinder.

2. The filter press of claim 1 , further comprising an extension rod mounted in alignment with the hydraulic cylinder.

3. The filter press of claim 2 , wherein the spacer rod is aligned with the extension rod and disposed between the extension rod and the follower plate when the swing arm is disposed in the home position.

4. The filter press of claim 2 , wherein the extension rod is supported by one or more carrier plates.

5. The filter press of claim 4 , wherein the spacer rod is unaligned with the extension rod and disposed in a position above one of the one or more carrier plates most proximate the follower plate when the swing arm is disposed in the disengaged position.

6. The filter press of claim 1 , further comprising a handle disposed on an opposite end of the swing arm from the spacer rod.

7. The filter press of claim 1 , wherein the moveable support includes a retention element configured to hold the moveable support in at least one of the home position and the disengaged position.

8. The filter press of claim 1 , further comprising a manually operated hand pump configured to pressurize the hydraulic cylinder.

9. The filter press of claim 2 , wherein the extension rod is mounted between the hydraulic cylinder and the follower plate.

Assignments (2)
RELEASE OF SECURITY INTEREST Recorded May 26, 2023
From: JPMORGAN CHASE BANK N.A., AS COLLATERAL AGENT
To: EVOQUA WATER TECHNOLOGIES LLC; NEPTUNE BENSON, INC.
Reel/Frame 063787/0943 →
SECURITY INTEREST Recorded Apr 7, 2021
From: EVOQUA WATER TECHNOLOGIES LLC; NEPTUNE BENSON, INC.
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 055848/0689 →