# US 10,504,671 B2 · Rotary actuator comprising a homogeneously illuminated display area

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- Number: US 10,504,671 B2
- Document ID: US10504671B2
- Status: Granted
- Kind: B2
- Application number: 15/537,149
- Filed: 2015-10-29
- Published: 2017-11-30
- Granted: 2019-12-10
- Earliest claimed: 2014-12-19
- Assignees: Siemens Aktiengesellschaft
- Applicants: Siemens Aktiengesellschaft
- Inventors: Jean Jacques Faurie
- Web page: https://patentgrep.com/patent/US10504671B2

## CPC

- H01H 19/025: {Light-emitting indicators}
- G02B 6/0008: {the light being emitted at the end of the fibre}
- G02B 6/0016: {Grooves, prisms, gratings, scattering particles or rough surfaces}
- H01H 9/182: {Illumination of the symbols or distinguishing marks (H01H9/181 takes precedence)}
- H01H 2219/06: Reflector
- H01H 2219/062: Light conductor
- H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A rotary actuator includes a cylindrical main body and an actuating handle which is placed on the cylindrical main body. The actuating handle includes a display area that can be illuminated. A light source is arranged in the cylindrical main body and emits light that is reflected via a first reflection surface onto a first section of the display area.

## Claims

### Claim 1

A rotary actuator, comprising:
a cylindrical main body extending in an axial direction;
an actuating handle placed on one axial end of the cylindrical main body and having an illuminatable display area with a first section and a second section;
a first reflection surface;
a second reflection surface,
wherein the first section of the display area extends transversely to the axial direction and the second section of the display area extends along the axial direction so that the first section and the second section extend at an angle of substantial 90 degrees in relation to one another,
wherein the cylindrical main body has two oval recesses formed therein and spaced from each other in a direction which is transverse to the axial direction and each having oval side edges situated closest to the display area and forming the first reflection area and the second reflection area correspondingly
wherein the first reflection surface is formed behind the second reflection surface when viewed from the display area and is spaced from the second reflection surface in a direction which is transverse to the axial direction; and
a light source arranged in the cylindrical main body, said light source emitting light which is reflected via the first reflection surface onto the first section of the display area and via the second reflection surface onto the second section of the display area.

### Claim 2 (depends on 1)

The rotary actuator of claim 1, further comprising a light guide for guiding the light from the light source to the display area.

### Claim 3 (depends on 2)

The rotary actuator of claim 2, further comprising a light guide guiding component configured to form the light guide, the first reflection surface, the second reflection surface and the display area.

### Claim 4 (depends on 3)

The rotary actuator of claim 3, wherein the light guide guiding component is constructed in the form of a transparent plastic part.

### Claim 5 (depends on 3)

The rotary actuator of claim 3, wherein the light guide guiding component is configured for insertion into the actuating handle from below.