Abstract: The invention relates to a linear motion actuator, comprising an operating member (12), which can be displaced from a basic position (14) in a control position (31) against the force of a spring member (28) using at least one actuating element (22), the operating member (12) being held in the basic position (14) by applying the force of the spring member (28) and the force of the spring member (28) acting on the operating member (12) being smaller than an actuating force of at least one actuating element (22) that is made of shape memory alloy, wherein the spring member (28) is configured as part of a carrier device (61), which comprises an operating member (12) or to which an operating member (12) may be attached.

Abstract: The invention relates to a device (12) which is used to press a pressure shoe (10) against a counter surface, comprising at least one at least partially flexible pressure body (16) which is supported on the bearing body (14), said pressure body comprising at least one cavity (18) which can be impinged upon by pressure fluid in order to produce a predetermined pressing force over a corresponding pressure body volume.

Abstract: A system for joining the end of a web of material (4) running off a first winding roll (17) with the beginning of a web on a new winding roll (1) interchanged with the first winding roll (17) on an unwinding machine comprising devices for cutting through the web (4) being wound off, for holding the end of the web so produced, and for pressing the end of the web against the periphery of an interchanged new winding roll (1), in order to produce an adhesive bond, has a splice element (6) which can be placed on the web being wound off (4), moved beyond the region of a full winding roll (1) and pressed against its periphery. The splice element (6) contains a web cutting element (15) and a holding element (16) which, when placed in contact with the web being wound off (4), is located behind the web-cutting element (15) in the direction of motion of the web.

Abstract: A measuring device for determining the pressure zone width and/or surface pressure between a web roll for a web and a further roll of a winding apparatus includes at least one reflex sensor emitting a radiation towards the web roll and receiving radiation reflected from the web roll. The reflex sensor is provided with a source emitting the radiation towards the web roll and a receiver which picks up beams reflected from the web roll. Source and receiver are embedded within the peripheral area of the further roll and are arranged adjacent to each other. During winding of the web, the reception of the radiation is interrupted when the web roll covers the source and/or the receiver. This interruption of the reception is a measure for the pressure zone width and in connection with other variables and constants for the roll firmness.