IP Library › Granted Patent US 12,421,925
Granted Patent B2
US 12,421,925 · App. 16/874,754 · Granted Sep 23, 2025

Method and assemblies for repair of plastic fuel lock ring and fuel supply line

Inventor: Eric Johnson (Flushing, MI)
F02M37/103F02M37/0017F02M37/0052F02M37/42
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Quick Facts
Patent No.
US 12,421,925
App. No.
16/874,754
Granted
Sep 23, 2025
Kind
B2
Abstract

A method of installation and kits for replacing a lock ring securing a fuel pump to a gas tank and a kit for replacing a fuel supply system of an automotive vehicle. The kit for replacing the lock ring including a circular body having a plurality through bores and a plurality of self-tapping fasteners. The kit for replacement of a fuel supply line including a fuel filter having circular beads on the inlet and outlet. The kit further including a pair of quick disconnect fittings for engaging the beads of the fuel filter.

Claims (12)

1. A method of replacing a fuel pump on a gas tank, the fuel pump being mounted to the gas tank by a lock ring engaging a plurality of tabs mounted to the gas tank, the method comprising the steps of:

removing the lock ring and tabs from the gas tank;

removing the old fuel pump from the tank;

installing the new fuel pump in an aperture in the fuel tank;

installing the lock ring having a top surface and a bottom surface, the top surface and the bottom surface extending between an outer edge and an inner edge, the bottom surface being planar in shape between the outer edge and the inner edge, the inner edge defining an aperture that receives a portion of the fuel pump, at least a portion of the fuel pump in communication with at least a portion of the inner edge of the ring or a portion of the bottom surface in communication with a portion of the fuel pump, a plurality of through bores extending from the top surface to the bottom surface;

inserting fasteners through the plurality of through bores in the lock ring, each of the fasteners having threads to extend through the through bores; and

driving the fasteners into the gas tank to secure the lock ring to the fuel tank.

2. The method of claim 1 wherein the fasteners are self-tapping fasteners which are screwed into the gas tank.

3. The method of claim 1 after the step of removing the old fuel pump including the step of securing an o-ring about an aperture of the fuel tank.

4. The method of claim 1 , wherein the bottom surface of the ring is configured to abut a flange of the fuel pump.

5. The method of claim 1 , wherein the top surface is planar in shape between the outer edge and the inner edge.

6. The method of claim 1 , wherein at least a portion of the bottom surface is configured to be in communication with the fuel tank.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 8, 2025
From: JOHNSON, ERIC
To: ERSON, INC.
Reel/Frame 072513/0262 →
Continuity (2)
Provisional Application 62849430 · May 17, 2019
Related Publication 20200362803A1 · Nov 19, 2020
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