Patent ID: 7567050
Filing Date: 2009-07-28
Classification: H01H

Abstract:
1. Arrangement for operating an electrically adjustable item of furniture for sitting and/or lying upon, with a device for isolating supply current from control devices that are connected to a first mains-operated voltage source for providing an operating potential for a servomotor, and with a first relay, which is located on the primary side of a mains transformer and in an “off”position when in non-excited state, and with an auxiliary voltage source that can be connected to the control input of the first relay, wherein a switching means with two, mutually independent switching contacts for simultaneous triggering of two switching processes, where the switching contacts can be actuated by one or two push-button switches and a first switching contact can be triggered to connect the auxiliary voltage source to the control input of the first relay, and a second switching contact to apply the operating potential to the servomotor and wherein the mains transformer comprises at least two secondary windings for generating the first mains-operated voltage source and a second mains-operated voltage source, connected to a control input of the first relay via a switch.