Mixing drum

Patent metadata

Field	Value
Publication number	US-11999078-B2
Application number	US-202017101540-A
Country	US
Kind code	B2
Filing date	Nov 23, 2020
Priority date	Sep 25, 2017
Publication date	Jun 4, 2024
Grant date	Jun 4, 2024

Abstract

A mixing drum includes a body defining a head aperture and a discharge aperture opposite the head aperture, a head coupled to the body and extending across the head aperture, and a mixing element positioned within the volume and coupled to the body. The head and the body define a volume. The body is formed from at least a first section and a second section. The first section overlaps the second section.

First claim

The invention claimed is:

1. A concrete mixing truck, comprising:
a chassis;
a plurality of tractive elements coupled to the chassis;
a cab coupled to the chassis; and
a mixing drum rotatably coupled to the chassis, the mixing drum including:
a body defining a head aperture and a discharge aperture opposite the head aperture, the body including an inner layer defining an interior surface of the body and an outer layer defining an exterior surface of the body;
a head coupled to the body, the head including a main body extending across the head aperture and a connecting flange extending between the inner layer and the outer layer of the body, wherein the head and the body define a volume; and
a mixing element positioned within the volume and coupled to the body,
wherein the body is formed from at least a first section and a second section, and wherein the first section overlaps the second section.

2. The concrete mixing truck of claim 1 , wherein the head is made from a first material, and wherein the body is made from a second material, and wherein the first material has a greater density than the second material.

3. The concrete mixing truck of claim 2 , wherein the first material is a metal and wherein the second material is at least one of a composite and a polymeric material.

4. The concrete mixing truck of claim 1 , wherein the outer layer defines a connecting flange of the first section, wherein the inner layer defines a connecting flange of the second section, and wherein the connecting flange of the first section overlaps the connecting flange of the second section.

5. The concrete mixing truck of claim 1 , wherein the mixing element is removably coupled to the body such that the mixing element can be removed from the volume.

6. The concrete mixing truck of claim 5 , wherein the mixing element is directly removably coupled to both the body and the head.

7. The concrete mixing truck of claim 6 , wherein the mixing element includes a base section, a lip section, and a web section extending between the base section and the web section, wherein the base section is positioned between the web section and the body, and wherein the base section and the lip section are wider than the web section.

8. The concrete mixing truck of claim 7 , wherein the mixing drum is configured to rotate about a longitudinal axis, wherein the lip section extends longitudinally beyond the web section toward the discharge aperture.

9. The concrete mixing truck of claim 8 , wherein the web section has a front surface that faces toward the head, and wherein the lip section is positioned entirely behind the front surface.

10. A concrete mixing truck, comprising:
a chassis;
a plurality of tractive elements coupled to the chassis;
a cab coupled to the chassis; and
a mixing drum rotatably coupled to the chassis, the mixing drum including:
a body defining a head aperture and a discharge aperture opposite the head aperture, the body including at least an inner layer of material and an outer layer of material coupled to one another, wherein the inner layer defines an interior surface of the body and the outer layer defines an exterior surface of the body;
a head coupled to the body, the head including a main body and a connecting flange extending from the main body and between the inner layer and the outer layer, wherein the head is positioned such that the head extends across the head aperture, and wherein the head and the body define a volume;
a mixing element positioned within the volume; and
an adhesive removably coupling the mixing element to the body such that the mixing element can be removed from the volume,
wherein the body is made from a first material, wherein the mixing element is made from a second material different than the first material, and wherein the head is made from a third material different from the first material; and
wherein the first material is at least one of a composite and a polymeric material, and wherein the third material is a metal having a greater density than the first material.

11. The concrete mixing truck of claim 10 , further comprising a driver coupled to the chassis, wherein the driver is configured to rotate the mixing drum relative to the chassis, and wherein the driver includes a drive shaft that engages the head to couple the mixing drum to the driver.

12. The concrete mixing truck of claim 10 , wherein the mixing element is directly removably coupled to both the body and the head.

13. The mixing drum of claim 12 , wherein the mixing element includes a base section, a lip section, and a web section extending between the base section and the web section, wherein the base section is positioned between the web section and the body, and wherein the base section and the lip section are wider than the web section.

14. The concrete mixing truck of claim 10 , wherein the body has an internal surface defining the volume, wherein the mixing element has a mounting surface that extends along the internal surface of the body, and wherein the adhesive extends between the internal surface and the mounting surface.

Assignees

• Oshkosh Corp

Inventors

• Rocholl Josh
• Tucke Terry
• Datema Bryan
• Harris Thomas
• Steffek Jillian
• Hathaway Bob
• Johnson Chadwick

Classifications

• B28C5/4272 Primary

  with rotating drum rotating about a horizontal or inclined axis, e.g. comprising tilting or raising means for the drum (B28C5/4279 takes precedence) · CPC title

• B01F29/401

  Receptacles, e.g. provided with liners · CPC title

• B01F29/40111

  Non-cylindrical sections, e.g. elliptical or irregular · CPC title

• B01F29/40221

  provided with baffles, plates or bars on the wall or the bottom · CPC title

• B01F29/4033

  inclined · CPC title