# US 2014/0196860 A1 · Device for retaining doctor blades

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- Number: US 2014/0196860 A1
- Document ID: US20140196860A1
- Status: Published application
- Kind: A1
- Application number: 14/240,992
- Filed: 2012-08-14
- Published: 2014-07-17
- Earliest claimed: 2011-08-31
- Assignees: Joh. Clouth GmbH & Co. KG
- Inventors: Joachim Knopp; Axel Borgmann
- Web page: https://patentgrep.com/patent/US20140196860A1

## CPC

- D21G 3/00: Doctors
- D21G 3/005: {Doctor knifes}
- D21G: CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES (winders or rewinders for finished products, means for adjustment of wrinkles or lateral extensions B65H)

## Abstract

A device for retaining doctor blades a bottom plate and a top plate, said plates being pivotally connected together by means of a pivot bearing and the doctor blade is fixed to the top plate. An expandable tube is arranged respectively on both sides of the pivot bearing between the bottom plate and the top plate, said pivot bearing consisting of a radially supported bearing shaft and a receiving element for the bearing shaft. The bearing shaft is fixed either to the bottom plate or the top plate and the receiving element is fixed to either the top plate or the bottom plate.

## Claims

### Claim at position 1

1-7. (canceled)

### Claim 8

A device for retaining a doctor blade, the device comprising:
a bottom plate,
a top plate pivotally connected to the bottom plate via a pivot bearing, with the doctor blade being attached to the top plate, the top plate comprising a deflection plate pointing toward the bottom plate at a clamping location for the doctor blade,
an expandable pressure hose disposed between the bottom plate and the top plate on each side of the pivot bearing,
a radially supported bearing shaft attached to or formed on either the bottom plate or the top plate,
a receptacle for the bearing shaft attached to or formed on either the top plate or the bottom plate, with the bearing shaft and the receptacle forming the pivot bearing,
a piping guide chamber disposed on a side of the top plate facing the doctor blade,
a flexible seal attached on a side of the bottom plate facing the piping guide chamber and having a free end comprising a piping engaging in the piping guide chamber,
wherein the flexible seal and the deflection plate seal a gap formed between the bottom plate and the top plate, said gap extending in a longitudinal direction of the device.

### Claim 9 (depends on 8)

The device of claim 8, wherein the bottom plate is shaped as a trough with two side walls.

### Claim 10 (depends on 8)

The device of claim 8, wherein the bottom plate has a substantially W-shaped cross-section.

### Claim 11 (depends on 8)

The device of claim 8, wherein the bottom plate is formed by a bent sheet metal profile, into which the bearing shaft is integrated by forming.

### Claim 12 (depends on 8)

The device of claim 8, wherein the bearing shaft is substantially Ω-shaped.

### Claim 13 (depends on 12)

The device of claim 12, wherein the bearing shaft is reinforced by a tube or a rod.

### Claim 14 (depends on 8)

The device of claim 8, wherein the receptacle is C-shaped and is open toward the bottom plate.

### Claim 15 (depends on 8)

The device of claim 8, wherein the receptacle extends along an entire length of the top plate or along sections of the length of the top plate.