IP Library Granted Patent US 12,384,476
Granted Patent B2
US 12,384,476 · App. 18/665,874 · Granted Aug 12, 2025

Hydraulic actuated trailer flip-axle

Inventors: Jeremy James Sjovall (Burbank, SD); Scott Daniel Reithmeier (Missoula, MT); Madison Lee Gravel (Central City, IA); Timothy John McGreal (Manchester, IA)
Assignee: BULL MOOSE HEAVY HAUL, INC.
B62D61/125
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Quick Facts
Patent No.
US 12,384,476
App. No.
18/665,874
Granted
Aug 12, 2025
Kind
B2
Abstract

A system for moving a flip axle assembly relative to a trailer, includes a trailer pivotally connected to a flip axle assembly, where a rotation assembly moves the flip axle assembly between a ground-engaging position and a stowed position. The rotation assembly includes a first linkage connected to the flip axle assembly, and a second linkage pivotally connected to the first linkage, forming a second pivot connection. A hinge is connected to the trailer, with the hinge being pivotally connected to the second linkage forming a third pivot connection. A rotation mechanism is operably connected to the rotation assembly for moving the flip axle assembly between the ground-engaging position and the stowed position.

Claims (84)

1. An apparatus for moving a flip axle assembly relative to a trailer, comprising:

a first mounting bracket connected to the trailer;

a first attachment bracket pivotally connected to the first mounting bracket forming a first pivot connection, wherein the first attachment bracket is connected to the flip axle assembly;

a rotation assembly, comprising:

a first linkage connected to the first attachment bracket;

a second linkage pivotally connected to the first linkage, forming a second pivot connection; and

a hinge connected to the trailer, wherein the hinge is pivotally connected to the second linkage forming a third pivot connection; and

a rotation mechanism operably connected to the rotation assembly.

2. The apparatus of claim 1 , further comprising:

a second mounting bracket connected to the trailer;

a second attachment bracket pivotally connected to the second mounting bracket, wherein the second attachment bracket is connected to the flip axle assembly;

a crossbar connected to the first attachment bracket and the second attachment bracket; and

wherein the first linkage is connected to the first attachment bracket by the crossbar.

3. The apparatus of claim 1 , further comprising:

wherein the third pivot connection is below and rearward of the first pivot connection.

4. The apparatus of claim 1 , further comprising:

wherein the first linkage comprises:

an arm extending from a leg;

wherein the leg extends from the second pivot connection; and

wherein the arm and the leg connect at an angle.

5. The apparatus of claim 1 , further comprising:

wherein the rotation mechanism operably connected to the flip axle assembly.

6. The apparatus of claim 5 , further comprising:

wherein the rotation mechanism is an actuator;

wherein extension of the actuator moves the flip axle assembly to a stowed position; and

wherein retraction of the actuator moves the flip axle assembly to a deployed position.

7. The apparatus of claim 1 , further comprising:

a crossbar hinge operably connected to the first attachment bracket;

wherein the crossbar hinge forms a fourth pivot connection between the first linkage and the first attachment bracket; and

wherein an operable connection between the first linkage and the first attachment bracket is the fourth pivot connection.

8. The apparatus of claim 7 , further comprising:

a second mounting bracket connected to the trailer;

a second attachment bracket pivotally connected to the second mounting bracket, wherein the second attachment bracket is connected to the flip axle assembly;

a crossbar connected to the first attachment bracket and the second attachment bracket; and

wherein the crossbar hinge is connected to the crossbar.

9. The apparatus of claim 8 , further comprising:

wherein the crossbar hinge forms a crescent-shaped upper edge.

10. The apparatus of claim 1 , further comprising:

wherein the trailer includes wheels rotatable on an axle for supporting the trailer upon a surface; and

wherein the flip axle assembly includes wheels rotatable on an axle for supporting the flip axle assembly upon the surface.

11. An apparatus for moving a flip axle assembly relative to a trailer, comprising:

a first mounting bracket connected to the trailer;

a first attachment bracket pivotally connected to the first mounting bracket forming a first pivot connection, wherein the first attachment bracket is connected to the flip axle assembly;

a rotation assembly, comprising:

a first linkage, comprising:

a first side plate adjacent a second side plate; and

wherein the first linkage is connected to the first attachment bracket;

a second linkage pivotally connected to the first linkage, forming a second pivot connection, wherein the second linkage is received between the first linkage first side plate and second side plate; and

a hinge connected to the trailer, wherein the hinge is pivotally connected to the second linkage forming a third pivot connection; and

a rotation mechanism operably connected to the rotation assembly.

12. The apparatus of claim 11 , further comprising:

wherein the second linkage comprises a first side plate adjacent a second side plate.

13. The apparatus of claim 12 , further comprising:

wherein the hinge is connected to the second linkage between the second linkage first side plate and second side plate.

14. The apparatus of claim 11 , further comprising:

wherein the third pivot connection is below and rearward of the first pivot connection.

15. The apparatus of claim 11 , further comprising:

wherein the first linkage forms:

an arm extending from a leg;

wherein the leg extends from the second pivot connection; and

wherein the arm and the leg connect at an angle.

16. The apparatus of claim 11 , further comprising:

wherein the rotation mechanism operably connected to the flip axle assembly and rotation assembly.

17. The apparatus of claim 11 , further comprising:

a crossbar hinge operably connected to the first attachment bracket;

wherein the crossbar hinge forms a fourth pivot connection between the first linkage and the first attachment bracket; and

wherein an operable connection between the first linkage and the first attachment bracket is the fourth pivot connection.

18. The apparatus of claim 11 , further comprising:

wherein the trailer includes wheels rotatable on an axle for supporting the trailer upon a surface; and

wherein the flip axle assembly includes wheels rotatable on an axle for supporting the flip axle assembly upon the surface.

19. A trailer, comprising:

a flip axle assembly;

a first mounting bracket connected to the trailer;

a first attachment bracket pivotally connected to the first mounting bracket forming a first pivot connection, wherein the first attachment bracket is connected to the flip axle assembly;

a rotation assembly, comprising:

a first linkage, comprising:

a first side plate adjacent a second side plate; and

wherein the first linkage is connected to the first attachment bracket;

a second linkage pivotally connected to the first linkage, forming a second pivot connection, wherein the second linkage is received between the first linkage first side plate and second side plate; and

a hinge connected to the trailer, wherein the hinge is pivotally connected to the second linkage forming a third pivot connection;

wherein the third pivot connection is below and rearward of the first pivot connection; and

a rotation mechanism operably connected to the rotation assembly.

20. The trailer of claim 19 , further comprising:

wherein actuation of the rotation mechanism moves the flip axle assembly.

Assignments (2)
SECURITY INTEREST Recorded Jul 22, 2026
From: BULL MOOSE HEAVY HAUL, INC.
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 075351/0245 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 11, 2024
From: SJOVALL, JEREMY JAMES; REITHMEIER, SCOTT DANIEL; GRAVEL, MADISON LEE; MCGREAL, TIMOTHY JOHN
To: BULL MOOSE HEAVY HAUL, INC.
Reel/Frame 067968/0772 →
Continuity (2)
Provisional Application 63502526 · May 16, 2023
Related Publication 20240391543A1 · Nov 28, 2024
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Cited By (1)
US 12,528,550