IP Library Granted Patent US 8,752,404
Granted Patent B2
US 8,752,404 · App. 12/863,013 · Granted Jun 17, 2014

Drum for a laundry treatment machine

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Quick Facts
Patent No.
US 8,752,404
App. No.
12/863,013
Granted
Jun 17, 2014
Kind
B2
Abstract

A drum for a laundry treatment machine that is rotatably mounted within the housing of the laundry treatment machine, and wherein the drum includes a bottom disk and a jacket which are individually or jointly provided with a curved structure. The curved structure includes at least two rows of prism-type embossings that have substantially rectangular base, and the at least two rows encompass at least partially the drum. A surface of embossings that is directed in a circumferential direction of the drum is arranged at a steep angle to the jacket; an opposing surface of the embossings is arranged at a flat angle to the jacket; and lateral surfaces of the embossings are arranged at least nearly at a right angle to the jacket.

Claims (48)

1. A drum for a laundry treatment machine, the drum being rotatably mounted within a housing of the laundry treatment machine, and the drum comprising:

at least one bottom disk;

a jacket, the jacket provided with a curved structure;

wherein the curved structure includes at least two rows of prism-type embossings having a substantially rectangular base;

wherein the at least two rows at least partially encompass the drum;

wherein a surface of the prism-type embossings that is directed in a circumferential direction of the drum is arranged at a steep angle to the jacket;

wherein an opposing surface of the prism-type embossings is arranged at a flat angle to the jacket; and

wherein lateral surfaces of the prism-type embossings are arranged at least nearly at a right angle to the jacket.

2. The drum of claim 1 , wherein the prism-type embossings protrude from an exterior of the jacket.

3. The drum of claim 1 , wherein the prism-type embossings protrude from an interior of the jacket.

4. The drum of claim 1 , wherein the laundry treatment machine carries a liquid, and wherein the surface of the prism-type embossings that is arranged at a steep angle to the jacket contains flood holes.

5. The drum of claim 1 , wherein a width of the substantially rectangular base approximately equals a length of the substantially rectangular base.

6. The drum of claim 1 , wherein a width of the substantially rectangular base approximately equals twice a length of the substantially rectangular base.

7. The drum of claim 1 , wherein a width of the substantially rectangular base approximately equals four to five times a length of the substantially rectangular base.

8. The drum of claim 1 , wherein three to twelve rows of the prism-type embossings are arranged over a width of the jacket, depending on a width of the substantially rectangular base.

9. The drum of claim 1 , wherein the at least two rows are arranged around a circumference of the drum such that adjacent ones of the prism-type embossings are flush with one another.

10. The drum of claim 1 , wherein the at least two rows are arranged around a circumference of the drum such that adjacent ones of the prism-type embossings are offset relative to one another.

11. The drum of claim 1 , wherein the rectangular base has a length and a width and the longest of the length and the width is perpendicular to the circumferential direction.

12. The drum of claim 11 , wherein each of the prism-type embossings is aligned along a first edge in axial rows and along a second edge in circumferential rows, and

the first edge defines the length, and

second edge defines the width.

13. The drum of claim 1 , wherein each of the prism-type embossings is aligned along a first edge in axial rows and along a second edge in circumferential rows, and

the first edge defines the length, and

second edge defines the width.

14. A drum rotatably mounted within a housing of a laundry treatment machine, the drum comprising:

a bottom disk;

a cylindrical jacket joined to the bottom disk; and

at least two rows of prism-type embossings having a substantially rectangular base, the at least two rows being disposed circumferentially on the cylindrical jacket, wherein

a first surface of each of the prism-type embossings faces in a circumferential direction of the drum and is arranged at a first angle to the jacket,

a second surface of each of the prism-type embossings opposes the first surface and is arranged at a second angle to the jacket, the first angle being greater than the second angle; and

circumferentially aligned surfaces of each of the prism-type embossings are arranged at substantially a right angle to the jacket.

15. The drum of claim 14 , wherein the prism-type embossings protrude from an exterior of the jacket.

16. The drum of claim 14 , wherein the prism-type embossings protrude from an interior of the jacket.

17. The drum of claim 14 , wherein the laundry treatment machine carries a liquid, and wherein the first surface contains flood holes.

18. The drum of claim 14 , wherein the rectangular base has a length and a width and the longest of the length and the width is perpendicular to the circumferential direction.

19. The drum of claim 18 , wherein each of the prism-type embossings is aligned along a first edge in axial rows and along a second edge in circumferential rows, and

the first edge defines the length, and

second edge defines the width.

20. The drum of claim 14 , wherein each of the prism-type embossings is aligned along a first edge in axial rows and along a second edge in circumferential rows, and

the first edge defines the length, and

second edge defines the width.

21. A drum rotatably mounted within a housing of a laundry treatment machine, the drum comprising:

a bottom disk;

a cylindrical jacket joined to the bottom disk; and

at least two rows of embossings having a substantially rectangular base, the at least two rows being disposed circumferentially on the cylindrical jacket, wherein

a first surface of each of the embossings faces in a circumferential direction of the drum and is arranged at a first angle to the jacket,

a second surface of each of the embossings opposes the first surface and is arranged at a second angle to the jacket, the first angle being greater than the second angle; and

two opposing surfaces of each of the embossings facing in opposite axial directions of the drum are arranged at substantially a right angle to the jacket.

Assignments (3)
CORRECTIVE ASSIGNMENT TO REMOVE USSN 14373413; 29120436 AND 29429277 PREVIOUSLY RECORDED AT REEL: 035624 FRAME: 0784. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME. Recorded Jun 19, 2015
From: BSH BOSCH UND SIEMENS HAUSGERÄTE GMBH
To: BSH HAUSGERÄTE GMBH
Reel/Frame 036000/0848 →
CHANGE OF NAME Recorded May 11, 2015
From: BSH BOSCH UND SIEMENS HAUSGERÄTE GMBH
To: BSH HAUSGERÄTE GMBH
Reel/Frame 035624/0784 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 16, 2010
From: OERTEL, CHRISTOPH; RATFISCH, UWE; SOMMER, STEPHAN; WILDUNG, WILFRIED
To: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH
Reel/Frame 024694/0730 →