Granted Patent B2

US 12,320,087 · App. 17/859,051 · Granted Jun 3, 2025

Inventors: Samuel Tze-Han Wu (Monrovia, CA); Matthew Allen Zolnowsky (Rapid City, SD)

E02B1/006B01D35/0273

Abstract

Claims (26)

1. A fish screen for a suction strainer, comprising:

at least one first plate having a central opening formed therethrough;

a second plate;

a helical spring having opposed first and second ends, the first end being secured to the at least one first plate and the second end being secured to the second plate, the helical spring having first and second portions positioned respectively adjacent to the first and second ends, and wherein the second portion of the helical spring has a smaller diameter than a diameter of the first portion of the helical spring; and

a mesh bag for releasably covering and receiving the at least one first plate, the second plate and the helical spring,

whereby the second portion of the helical spring is sized and shaped for releasably holding a free end of a suction strainer received within an interior of the helical spring through the central opening of the at least one first plate.

2. The fish screen for a suction strainer as recited in claim 1 , wherein each of the at least one first plate and the second plate has a circular contour.

3. The fish screen for a suction strainer as recited in claim 1 , wherein the first portion of the helical spring has a constant first diameter, and the second portion of the helical spring has a constant second diameter.

4. The fish screen for a suction strainer as recited in claim 1 , wherein the helical spring has a tapered contour.

5. The fish screen for a suction strainer as recited in claim 1 , wherein the mesh bag has a drawstring for releasably sealing an opening of the mesh bag about a hose attached to the suction strainer.

6. A fish screen for a suction strainer, comprising:

at least one first plate having a central opening formed therethrough;

a second plate;

a helical spring having opposed first and second ends, the first end being secured to the at least one first plate and the second end being secured to the second plate, the helical spring having first and second portions positioned respectively adjacent to the first and second ends, wherein the first portion of the helical spring has a constant first diameter and the second portion of the helical spring has a constant second diameter, the second diameter being smaller than the first diameter; and

a mesh bag for releasably covering and receiving the at least one first plate, the second plate and the helical spring,

whereby the second portion of the helical spring is sized and shaped for releasably holding a free end of a suction strainer received within an interior of the helical spring through the central opening of the at least one first plate.

7. The fish screen for a suction strainer as recited in claim 6 , wherein each of the at least one first plate and the second plate has a circular contour.

8. The fish screen for a suction strainer as recited in claim 6 , wherein the mesh bag has a drawstring for releasably sealing an opening of the mesh bag about a hose attached to the suction strainer.

9. A fish screen for a suction strainer, comprising:

at least one first plate having a central opening formed therethrough;

a second plate;

a helical spring having opposed first and second ends, the first end being secured to the at least one first plate and the second end being secured to the second plate, the helical spring having first and second portions positioned respectively adjacent to the first and second ends, wherein the helical spring has a tapered contour such that a diameter of the second portion is less than a diameter of the first portion; and

a mesh bag for releasably covering and receiving the at least one first plate, the second plate and the helical spring,

whereby the second portion of the helical spring is sized and shaped for releasably holding a free end of a suction strainer received within an interior of the helical spring through the central opening of the at least one first plate.

10. The fish screen for a suction strainer as recited in claim 9 , wherein each of the at least one first plate and the second plate has a circular contour.

11. The fish screen for a suction strainer as recited in claim 9 , wherein the mesh bag has a drawstring for releasably sealing an opening of the mesh bag about a hose attached to the suction strainer.

Assignments (1)

Continuity (2)

References Cited (400)

Cited By (2)

US 12,427,449 US 12,442,148