Granted Patent
B2
US 12,649,405 · App. 18/115,940 · Granted Jun 9, 2026
Cylindrical semi-trailer
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Abstract
A cylindrical cargo container is formed of longitudinal, extruded arcuate panels joined pairwise at abutting edges to form a cylindrical tube. The container is mountable on a separate wheeled chassis to form a semi-trailer or railcar, or a chassis integral with a truck. The container may be substantially smooth on inner and outer surfaces, to provide optimal aerodynamics and freedom of motion of cargo within the container. The panels may have inner and outer skins bridged by multiple webs. Such structure may provide protection from punctures to the outer or inner skins. The container is useful to transport waste including municipal or industrial waste, and may be part of a tipper trailer. The container, trailer, truck, or railcar may be used with a compactor for compacting the waste within the container.
Claims (20)
1 . An extruded panel for construction of a cylindrical cargo container, the extruded panel comprising an inner skin and an outer skin sandwiching a plurality of webs bridging a space between the inner skin and the outer skin, wherein a cross-section of the panel perpendicular to an extrusion axis of the panel has a curved shape wherein the panel describes an arc, the extruded panel further comprising a tongue provided at a first edge of the panel extending parallel to the extrusion axis and a groove at a second edge of the panel opposite the first edge and extending parallel to the extrusion axis, wherein the tongue and the groove are respectively sized and shaped to fittingly mate the tongue of a first instance of the extruded panel with the groove of a second instance of the extruded panel, and wherein a cross-section of the tongue in a plane perpendicular to the extrusion axis has a generally rectangular shape.
2 . The extruded panel according to claim 1 formed by extrusion with an extrusion profile being the cross-section having the curved shape.
3 . The extruded panel according to claim 1 formed by extrusion with an extrusion profile lacking the curved shape, and bent to provide the extruded panel having the cross-section having the curved shape.
4 . The extruded panel according to claim 1 formed of aluminum.
5 . The extruded panel according to claim 1 , wherein the outer skin has a thickness of at least 1 mm, the inner skin has a thickness of at least 2 mm, the webs each have a thickness of at least 1 mm, the outer skin and the inner skin are spaced by a gap of at least 30 mm, and the webs are spaced by a gap of at least 15 mm.
6 . The extruded panel according to claim 1 , wherein the outer skin has a thickness of about 2.5 mm, the inner skin has a thickness of about 3.5 mm, the webs each have a thickness of about 2.5 mm, the outer skin and the inner skin are spaced by a gap of about 38 mm, and the webs are spaced by a gap of about 25 mm.
7 . The extruded panel according to claim 1 , wherein the outer skin has a thickness of from 2 mm to 3 mm, the inner skin has a thickness of from 3 mm to 4 mm, the webs each have a thickness of from 2 mm to 3 mm, the outer skin and the inner skin are spaced by a gap of from 35 mm to 40 mm, and the webs are spaced by a gap of 20 mm to 30 mm.
8 . The extruded panel according to claim 1 , wherein the outer skin, the inner skin, and the webs form a channel.
9 . The extruded panel according to claim 8 , wherein the channel is configured to contain or to transport fluid.
10 . The extruded panel according to claim 8 , wherein the channel is configured to contain insulation.
11 . The extruded panel according to claim 8 , wherein the channel is configured to house electrical or plumbing lines.
12 . The extruded panel according to claim 1 comprising a rail integral with and extending along a length of the panel and configured for mounting to a support.
13 . The extruded panel according to claim 12 , wherein the support comprises landing gear, a fifth wheel, or a hitch.
14 . The extruded panel according to claim 12 , wherein at least one of the outer skin, the inner skin, or at least one of the webs, has a thickness, at or about a portion of the panel adjoining the rail, greater than a thickness of the outer skin, the inner skin, or at least one other one of the webs, other than at or about the portion.
15 . The extruded panel according to claim 1 , wherein a length of the panel extending along the extrusion axis is at least 5× an arc length of the curved shape of the panel.
16 . The extruded panel according to claim 1 , wherein a length of the panel extending along the extrusion axis is at least 10× an arc length of the curved shape of the panel.
17 . The extruded panel according to claim 1 , wherein a length of the panel extending along the extrusion axis is at least 20× an arc length of the curved shape of the panel.
18 . The extruded panel according to claim 1 , wherein a length of the panel extending along the extrusion axis is at least 30× an arc length of the curved shape of the panel.
19 . The extruded panel according to claim 1 , wherein the first edge has a first planar face perpendicular to the arc at the first edge, and opposing faces of the tongue extend perpendicularly from the first planar face of the first edge.
20 . The extruded panel according to claim 1 , wherein the tongue extends parallel to the extrusion axis at a first end of the curved shape of the cross-section of the panel in the plane perpendicular to the extrusion axis, and the groove extends parallel to the extrusion axis at a second end of the curved shape of the cross-section of the panel in the plane perpendicular to the extrusion axis opposite the first end of the curved shape.
Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded May 1, 2026
From: KLOEPFER, MICHAEL
To: TITAN TRAILERS INC.
Reel/Frame 074537/0192 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Mar 1, 2023
From: MAERTENS, ANDREW JOSEPH
To: KLOEPFER, MICHAEL; BULT, JAMES
Reel/Frame 062842/0344 →
Continuity (3)
Continuation
16471795
Provisional Application
62436960
· Dec 20, 2016
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