# US 2010/0167633 A1 · Protective device

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- Number: US 2010/0167633 A1
- Document ID: US20100167633A1
- Status: Published application
- Kind: A1
- Application number: 12/377,657
- Filed: 2007-09-07
- Published: 2010-07-01
- Earliest claimed: 2006-10-23
- Inventors: Ulrich Mueller-Boysen; Cornelius Boeck; Joachim Schadow; Juergen Wiker; Siegfried Keusch; Markus Meier
- Web page: https://patentgrep.com/patent/US20100167633A1

## CPC

- B24B 55/052: {with rotating tools}
- B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS

## Abstract

The invention originates from a safety device, in particular for hand-held power tools, with a disk-shaped and rotating tool, and with a base body (12). It is recommended that the safety device include an energy-absorbing element (14) arranged on the base body (12).

## Claims

### Claim 1

A safety device, in particular for hand-held power tools which include a disk-shaped, rotating tool, and a base body (12), characterized by an energy absorption element (14) which is located on the base body (12).

### Claim 2 (depends on 1)

The safety device as recited in claim 1,
wherein
the energy absorption element (14) is at least partially composed of a material that is softer than that of the base body (12).

### Claim 3 (depends on 1)

The safety device as recited in claim 1,
wherein
the energy absorption element (14) is at least partially composed of a material that is harder than that of the base body (12).

### Claim 4 (depends on 1)

The safety device as recited in claim 1,
wherein
a thickness (44) of the energy absorption element (14) is designed to be at least partially greater than a thickness (58) of the base body (12).

### Claim 5 (depends on 1)

The safety device as recited in claim 1,
wherein
the energy absorption element (14) is composed of a foam.

### Claim 6 (depends on 5)

The safety device as recited in claim 5,
wherein
the foam is a metal foam.

### Claim 7 (depends on 6)

The safety device as recited in claim 6,
wherein
the metal foam is a light metal foam.

### Claim 8 (depends on 7)

The safety device as recited in claim 7,
wherein
the light metal foam is an aluminum foam.

### Claim 9 (depends on 6)

The safety device as recited in claim 6,
wherein
the metal foam is a steel foam.

### Claim 10 (depends on 1)

The safety device as recited in claim 1,
wherein
the energy absorption element (14) has an open-pored design.

### Claim 11 (depends on 1)

The safety device as recited in claim 1, characterized by a carrier element (16) which is undetachably connected to the energy absorption element (14).

### Claim 12 (depends on 11)

The safety device as recited in claim 11,
wherein
the carrier element (16) is undetachably connected to the base body (12).

### Claim 13 (depends on 1)

The safety device as recited in claim 1,
wherein
the energy absorption element (14) is designed as an edge (18).

### Claim 14 (depends on 13)

The safety device as recited in claim 13,
wherein
the energy absorption element (14) is tailored to an edge of the base body (12).

### Claim 15 (depends on 1)

The safety device as recited in claim 1,
wherein
the energy absorption element (14), together with the base body (12), extends around an angular range of a tool of 180°.

### Claim 16 (depends on 1)

A method for manufacturing a safety device as recited in claim 1,
wherein
a foamable aluminum alloy (20) is plated onto a carrier element (16).