# US 11,432,702 B2 · Domestic dishwasher having lifting mechanism for washing item receptacle

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- Number: US 11,432,702 B2
- Document ID: US11432702B2
- Status: Granted
- Kind: B2
- Application number: 16/616,996
- Filed: 2018-05-28
- Published: 2021-04-29
- Granted: 2022-09-06
- Earliest claimed: 2017-06-20
- Assignees: BSH Hausgeräte GmbH
- Applicants: BSH Hausgeräte GmbH
- Inventors: Martin Heinle; Florian Racs; Martin Rittner; Thomas Steck; Norbert Gerstner
- Web page: https://patentgrep.com/patent/US11432702B2

## CPC

- A47L 15/506: {Arrangements for lifting racks for loading or unloading purposes}
- A47L 15/507: {Arrangements for extracting racks, e.g. roller supports}
- A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08)

## Abstract

A household dishwasher includes a rinsing container, a washing item receptacle, a guide mechanism for moving the washing item receptacle from a starting state within the rinsing container to an end state outside the rinsing container and vice versa, and a lifting mechanism for raising the receptacle from a starting position to an end position and to lower it from the end position to the starting position. The lifting mechanism includes a lifting lever pivotably connected to the rinsing container and the guide mechanism and having a guide contour for arresting the receptacle in the end position when lifted from the starting position to the end position and in the end state when lowered from the end position to the starting position so that the receptacle is only movable from the starting state to the end state in the starting position and vice versa.

## Claims

### Claim 1

A household dishwasher, comprising:
a rinsing container;
a washing item receptacle for receiving an item to be washed, the washing item receptacle having a guide pin;
a guide mechanism configured to move the washing item receptacle from a starting state arranged within the rinsing container to an end state arranged outside of the rinsing container and vice versa; and
a lifting mechanism configured to raise the washing item receptacle from a starting position to an end position and to lower the washing item receptacle from the end position to the starting position, said lifting mechanism comprising;
a lifting lever connected in a pivotable manner to the rinsing container and the guide mechanism, the lifting lever including:
a plate-shaped base portion extending laterally therefrom, the plate-shaped base portion having a guide contour in which the guide pin is slid and guided, such that the guide contour is configured to arrest the washing item receptacle in the end position upon the washing item receptacle being lifted in a substantially linear manner from the starting position to the end position by pivoting of the lifting lever, and to arrest the washing item receptacle in the end state upon the washing item receptacle being lowered from the end position to the starting position by the pivoting of the lifting lever,
wherein the guide contour is configured to guide the guide pin such that the washing item receptacle is only movable from the starting state inside the rinsing container to the end state in the starting position completely outside of the rinsing container and vice versa, substantially horizontally.

### Claim 2 (depends on 1)

The household dishwasher of claim 1, wherein the guide contour is configured to guide the washing item receptacle when the washing item receptacle is raised from the starting position to the end position and when the washing item receptacle is lowered from the end position to the starting position such that a spacing between the rinsing container and the washing item receptacle is uniform.

### Claim 3 (depends on 1)

The household dishwasher of claim 1, wherein the guide contour defines a maximum withdrawal path of the washing item receptacle when the washing item receptacle is moved from the starting state to the end state.

### Claim 4 (depends on 1)

The household dishwasher of claim 1, wherein the guide contour has a first guide portion and a second guide portion connected to the first guide portion, said second guide portion being inclined at an angle of inclination relative to the first guide portion.

### Claim 5 (depends on 4)

The household dishwasher of claim 4, wherein the first guide portion is straight and the second guide portion is straight or curved.

### Claim 6 (depends on 4)

The household dishwasher of claim 4, wherein the first guide portion in the starting position is arranged parallel to the guide mechanism and in the end position is arranged perpendicular to the guide mechanism.

### Claim 7 (depends on 4)

The household dishwasher of claim 4, wherein the second guide portion is arranged in the starting position and in the end position at an incline relative to the guide mechanism, wherein in the starting position the second guide portion is inclined by 90° relative to an orientation in the end position.

### Claim 8 (depends on 1)

The household dishwasher of claim 1, wherein the guide contour has a first guide portion, a second guide portion connected to the first guide portion, a third guide portion connected to the second guide portion, and a fourth guide portion connected to the third guide portion.

### Claim 9 (depends on 8)

The household dishwasher of claim 8, wherein the first, second, third and fourth guide portions are configured to form a U-shaped or approximately U-shaped guide contour.

### Claim 10 (depends on 1)

The household dishwasher of claim 1, wherein in the starting state the guide pin is out of engagement with the guide contour, and wherein the guide pin is brought into positive engagement with the guide contour when the washing item receptacle is moved from the starting state to the end state.

### Claim 11 (depends on 10)

The household dishwasher of claim 10, wherein the guide contour has a lead-in chamfer for inserting the guide pin into the guide contour when the washing item receptacle is moved from the starting state to the end state.

### Claim 12 (depends on 1)

The household dishwasher of claim 1, wherein the guide contour has a first guide portion, a second guide portion connected to the first guide portion, and a latching geometry between the first guide portion and the second guide portion.

### Claim 13 (depends on 12)

The household dishwasher of claim 12, wherein the latching geometry is a latching lug.

### Claim 14 (depends on 1)

The household dishwasher of claim 1, further comprising a spring-loaded latching bolt which cooperates with the guide pin and is brought into engagement with the plate-shaped base portion of the lifting lever outside the guide contour.

### Claim 15 (depends on 1)

The household dishwasher of claim 1, further comprising a spring element supported against the guide contour and acting on the guide pin.

### Claim 16 (depends on 1)

The household dishwasher of claim 1, wherein the lifting mechanism comprises a first lifting lever having the guide contour and a second lifting lever arranged in spaced apart relation to the first lifting lever and pivotably connected to the rinsing container and the guide mechanism.

### Claim 17 (depends on 16)

The household dishwasher of claim 16, wherein the guide mechanism comprises a first guide mechanism and a second guide mechanism arranged on either side of the washing item receptacle, with one pair of the first and second lifting levers being pivotably connected to the first guide mechanism and another pair of the first and second lifting levers being pivotably connected to the second guide mechanism.

### Claim 18 (depends on 1)

The household dishwasher of claim 1, further comprising a first guide portion and a second guide portion connected to said first guide portion, wherein the first guide portion and the second guide portion intersect at an apex, and on condition that the guide pin bears against the apex of the guide contour, a maximum withdrawal path of the washing item receptacle is reached.