Angle measuring device

• US 20080208522A1
• Filed: 02/19/2008
• Published: 08/28/2008
• Est. Priority Date: 02/22/2007
• Status: Active Grant

• Current Assignee: STAHLWILLE Eduard Wille GmbH & Co. KG
• Original Assignee: STAHLWILLE Eduard Wille GmbH & Co. KG
• Inventors: Lucke, Michael
• Granted Patent: US 7,841,100 B2
• Time in Patent Office: Days
• US Class Current: 702/151
• CPC Class Codes: B25B 23/1425 by electrical means
• CPC Class Codes: G01D 9/005 Solid-state data loggers
• CPC Class Codes: G01L 5/24 for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed

Abstract

The invention relates to a angle measuring device measuring the tightening angle of an operation tool for tightening screwed connections. The angle measuring device is releasabley mounted to the operating tool.

Claims

1. An angle measuring device adapted for measuring the tightening angle of an operating tool provided for tightening screwed connections, comprising;

a releasably mounted connection between said angle measuring device and said operating tool, wherein rotary angle sensors are provided for measuring a rotary angle electronically.

2. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 1, wherein said rotary angle sensors are formed as acceleration sensors.

3. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 1, wherein said rotary angle sensors are formed as gyroscopes.

4. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 1, wherein a display is provided showing the measured angles respectively.

5. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 1, wherein a connection is provided for using a power supply of said operating tool.

6. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 1, wherein a microprocessor-operated control unit with a memory is comprised, in particular for digitally storing measured rotary angle data.

7. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 1, wherein transmission means are provided for transmitting measured rotary angle data to an external processing unit.

8. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 7, wherein said transmission means are formed as a radio, infrared and/or wired connection.

9. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 1, wherein a data and control bus having an interface, in particular a wireless interface, to a microprocessor-operated control unit of said operating tool is provided.

10. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 1, wherein said operating tool and/or said angle measuring device comprise a trigger device transmitting a start and/or stop signal for a measurement to said angle measuring device.

11. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 1, wherein said operating tool comprises a release device releasing said operation tool at a predefined angle.

12. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 11, wherein said operating tool and/or said angle measuring device comprise a trigger device generating a signal for said release device releasing said operation tool.

13. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 2, wherein said angle measuring device comprises:

a display showing the measured angles respectively;

a connection for using a power supply of said operating tool;

a microprocessor-operated control unit with a memory, in particular for digitally storing measured rotary angle data;

transmission means for transmitting measured rotary angle data to an external processing unit;

a data and control bus, in particular a wireless interface, having an interface to a microprocessor-operated control unit of said operating tool; and

a trigger device transmitting a start and/or stop signal for a measurement to said angle measuring device.

14. The angle measuring device measuring the tightening angle of an operating tool for tightening screwed connections according to claim 13, wherein said operating tool and/or said angle measuring device comprise a trigger device generating a signal for a release device comprised by the said operating tool releasing the operation tool.