Patent ID: 6336374
Filing Date: 2002-01-08
Classification: B25J,Y10T

Abstract:
A device for relative displacement of two elements (1, 2) comprising: articulated links (4, 5) connected between the elements; first, second and third force-applying arrangements (6, 7, 8) for applying force to displace the elements, the articulated links forming at least one four-links system (FS1), at least one pivot arm arrangement (11), the four-links system and the pivot arm arrangement being mutually connected by means of a connection arranged (12), said first (6) of the force-applying arrangements pivoting links (4, 5) of the four-links system in first planes in order to change the shape of the four-links system, said third (8) of the force-applying arrangements pivoting the pivot arm arrangement (11) the pivot arm arrangement (11) being pivotable in planes which are at an angle to the first planes, in which the links (4, 5) of the four-links system (FS1) are pivotable in response to said force-applying arrangement, the four-links system (FS1) being arranged between the connection arrangement and the first element (1) formed as a base member, the pivot arm arrangement (11) being arranged between the second element (2) and the connection arrangement (12); the first and/or third force-applying arrangement (6, 8) comprising a force-exerting member having a stationary portion connected to the first element and a movable portion adapted to actuate the second element via a link arm arrangement (16, 34).