# US 2016/0250089 A1 · Electric actuator system

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- Number: US 2016/0250089 A1
- Document ID: US20160250089A1
- Status: Published application
- Kind: A1
- Application number: 15/148,675
- Filed: 2016-05-06
- Published: 2016-09-01
- Earliest claimed: 2011-04-12
- Applicants: Linak A/S
- Inventors: Karsten Westermann
- Web page: https://patentgrep.com/patent/US20160250089A1

## CPC

- A61G 7/018: Control or drive mechanisms
- A61G 7/002: having adjustable mattress frame
- A61G 7/0506: {Head or foot boards (head or foot boards for comfort or ergonomics A47C19/022)}
- F21V 23/0442: {activated by means of a sensor, e.g. motion or photodetectors}
- A61G 7/012: raising or lowering of the whole mattress frame (A61G7/005, A61G7/008 take precedence)
- A61G 7/015: divided into different adjustable sections, e.g. for Gatch position
- A61G 2203/32: for force
- A61G 2203/36: for motion
- A61G 2203/44: for weight
- A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00)
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR

## Abstract

An electric actuator system for hospital and care beds (1, 20) for adjusting e.g. the lying surface of the bed (1, 20). The actuator system is connected to one or more light sources (19, 23, 24), which may be switched on if a change in the patient's movement pattern and/or position in the bed (1, 20) is registered. The electric actuator system may thus help the patient navigate around the room.

## Claims

### Claim 1

An electric actuator system for hospital and care beds (1, 20) comprising at least one linear actuator (9, 10, 13, 14, 21, 22) for adjusting the bed (1, 20), a control box (15) and at least one control unit (17, 18), where the linear actuator (9, 10, 13, 14, 21, 22) and the control unit are connected to the control box (15) and where the linear actuator (9, 10, 13, 14, 21, 22) comprises means for registering a force on the linear actuator (9, 10, 13, 14, 21, 22) and relative changes therein, and one or more light sources (19, 23, 24) which may be activated if one or more changes in the force on the linear actuator (9, 10, 13, 14, 21, 22) is registered.

### Claim 2 (depends on 1)

The electric actuator system according to claim 1, including means for wireless connection between said control box and said one or more light sources (19, 23, 24).

### Claim 3 (depends on 1)

The electric actuator system according to claim 1, comprising a light source (19, 23, 24) which can be located on a bed (1, 20).

### Claim 4 (depends on 1)

The electric actuator system according to claim 1, wherein the control box (15) comprises at least a part of the control for the actuator system.

### Claim 5 (depends on 1)

The electric actuator system according to claim 1, wherein the control box (15) comprises a mains based power supply.

### Claim 6 (depends on 1)

The electric actuator system according to claim 1, wherein the control box (15) comprises a rechargeable battery pack.

### Claim 7 (depends on 1)

The electric actuator system according to claim 1, wherein said means for registering the force on the linear actuator (9, 10, 13, 14, 21, 22) comprises a load cell.

### Claim 8 (depends on 1)

The electric actuator system according to claim 1, including a junction box 16.

### Claim 9 (depends on 8)

The electric actuator system according to claim 8, wherein the junction box comprises a light source (19).

### Claim 10 (depends on 1)

A hospital or care bed comprising an electric actuator system according to claim 1.