Work table

• US 20050082997A1
• Filed: 02/11/2003
• Published: 04/21/2005
• Est. Priority Date: 02/26/2002
• Status: Active Grant

• Current Assignee: Logicdata Electronic & Software Entwicklungs Gmbh
• Original Assignee: Walter Koch
• Inventors: Koch, Walter
• Granted Patent: US 6,977,476 B2
• Time in Patent Office: Days
• US Class Current: 318/280
• CPC Class Codes: A47B 9/00 Tables with tops of variable height lecterns with variable height A47B19/06; school forms or desks with variable height A47B39/02, A47B41/02; seats with variable height A47C3/20

Abstract

A work table is described, having a frame (2) which is adjustable especially with respect to its height and for the adjustment of which at least one electric motor (4) with a control device (7) is provided. In order to provide simple constructional conditions it is proposed that the control device (7) which is connected to transducer (10) for the motor load reverses the direction of rotation of the electric motor (4) depending on the determined variable and/or change of the motor load and cuts off the same after a thus caused reverse rotation.

Claims

1. A work table with a frame (2) which is adjustable especially with respect to its height and for the adjustment of which at least one electric motor (4) with a control device (7) is provided, wherein the control device (7) which is connected to transducer (10) for the motor load reverses the direction of rotation of the electric motor (4) depending on the determined variable and/or change of the motor load and cuts off the same after a thus caused reverse rotation.

2. A work table according to claim 1, wherein the transducer (10) for the motor load consists of a measuring device (12) for the motor current.

3. A work table according to claim 1, wherein, the control device (7) cuts off the electric motor (4) via a timer element (11) after the reversal of the direction of rotation.