IP Library Granted Patent US 12661944
Granted Patent B2
US 12661944 · App. 19/196,608 · Granted Jun 23, 2026

Single axle suspension system and associated methods

Inventors: Yanfeng Cui (Bellingham, WA); Kelly Zuoer Cui (Bellingham, WA)
Assignee: Good RV Equipment INC
B60G3/04B60G13/003B60G2206/91B60G2300/04
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Quick Facts
Patent No.
US 12661944
App. No.
19/196,608
Granted
Jun 23, 2026
Kind
B2
Abstract

A suspension system for a trailer and associated methods are provided. In some embodiments, the suspension system includes (1) one or more first shock-absorbing components; (2) a second shock-absorbing component; and (3) a connecting member configured to position and connect the first shock-absorbing components and the second shock-absorbing component. The connecting member includes a supporting base configured to support the first shock-absorbing component. The connecting member includes a contacting surface member configured to be in contact with the second shock-absorbing component.

Claims (27)

1 . A trailer comprising:

a platform structure;

a wheel coupled to the platform structure; and

a suspension system coupled to the wheel and the platform structure, wherein the suspension system comprises:

one or more first shock-absorbing components having a first shape;

a second shock-absorbing component having a second shape different from the first shape; and

a connecting member configured to position and directly connect the first shock-absorbing components with the second shock-absorbing component,

wherein the connecting member includes a supporting base configured to support the first shock-absorbing component; and

wherein the connecting member includes a contacting surface member configured to be in contact with the second shock-absorbing component.

2 . The trailer of claim 1 , wherein the suspension system comprises a first housing element connected to the one or more first shock-absorbing components.

3 . The trailer of claim 2 , wherein the first housing element is connected to a platform structure of the trailer.

4 . The trailer of claim 3 , wherein the suspension system comprises a hydraulic component configured to connect with the first housing element and the platform structure of the trailer.

5 . The trailer of claim 2 , wherein the first housing element includes a first alignment member and a second alignment member configured to secure and position the contacting surface member of the connecting member.

6 . The trailer of claim 2 , wherein the first housing element includes a first surface, and wherein the one or more first shock-absorbing components is positioned between the first surface and the supporting base of the connecting member.

7 . The trailer of claim 6 , wherein the first surface of the first housing element includes a slant surface.

8 . The trailer of claim 6 , wherein the first housing element includes a second surface, and wherein the second shock-absorbing component is positioned between the second surface and the contacting surface member of the connecting member.

9 . The trailer of claim 8 , wherein the second surface of the first housing element includes a vertical surface.

10 . The trailer of claim 2 , the suspension system comprises a second housing element configured to be coupled with the first housing element.

11 . The trailer of claim 10 , wherein the second housing element includes a sleeve component configured to accommodate an alignment member of the first housing element.

12 . The trailer of claim 10 , wherein the second housing element includes an opening configured to enable a wheel hub assembly to pass though such that a wheel is connected to a platform structure of the trailer.

13 . The trailer of claim 12 , wherein at least one of the one or more first shock-absorbing components includes a center portion and an external portion.

14 . The trailer of claim 13 , wherein the center portion and the external portion include a same elastic material.

15 . The trailer of claim 13 , wherein the center portion and the external portion include at least two different elastic materials.

16 . The trailer of claim 12 , wherein the one or more first shock-absorbing components include two stacked modular first shock-absorbing components.

17 . The trailer of claim 12 , wherein at least one of the one or more first shock-absorbing components includes a first slant surface and a second slant surface.

18 . The trailer of claim 12 , wherein at least one of the one or more first shock-absorbing components includes a connecting member.

19 . The trailer of claim 12 , wherein the second shock-absorbing component has a spherical shape and includes a truncated surface.