1. A linear actuator comprising: a first mounting fixture for mounting of a rear end of the actuator, an electric motor, a transmission, at least one spindle, with a spindle nut, where the electric motor through the transmission drives the spindle, so that the rotationally secured spindle nut displaces itself back and forth along the spindle depending on the rotational direction of the motor, and by moving the spindle and the spindle nut in relation to each other axial forces are exerted, and where the spindle nut alternatively the spindle has a connection for a longitudinally displaceable activation element, and a squeeze protection device comprising a piezo element, so that dynamic deviations of the load on the actuator are reflected in the read-out from the piezo element, wherein the squeeze protection device is arranged directly or indirectly in connection with an end of the electric motor.
2. The linear actuator according to claim 1, wherein the squeeze protection device is designed as a module consisting of a housing, a spring and a piezo element.
3. The linear actuator according to claim 1, wherein the squeeze protection device is arranged between a first unyielding part in the actuator and a second unyielding part in connection with a mounting fixture.
4. The linear actuator according to claim 3, wherein between the two unyielding parts is a compressible part, which is compressed due to the load on the actuator, for which reason a squeezing in one direction or the other of the actuator will cause a dynamic compression of the compressible part, where the compressible part further functions as a mechanical noise damper of the construction.
5. The linear actuator according to claim 4, wherein the compressible part is equipped with a hollow for insertion of the squeeze protection.
6. The linear actuator according to claim 1, wherein the forces of a squeezing pass from the first unyielding part to the second unyielding part and distribute themselves between the compressible part and the squeeze protection device, so that the spring affects the piezo element for indication of a squeezing.
7. The linear actuator according to claim 6, wherein the compressible part together with the gearing in the spring is dimensioned to limit the dynamic range of the mechanical deflection of the piezo element, by which it is ensured that the piezo element is not deflected in a destructive manner.
8. The linear actuator according to claim 1, wherein the squeeze protection device is equipped with snap-locking means, which with cooperative snap-locking means designed in connection with the first unyielding part in the form of a motor fixture retains the device in connection with the motor.
9. The linear actuator according to claim 1, wherein the piezo element rests on a rim on the motor rear fixture, so that a part of the piezo element is in connection with the motor rear fixture and over the spring to the housing is connected to the top flange.
10. The linear actuator according to claim 9, wherein the piezo element is equipped with a cable connection, which preferably over a plug connection is connected to a printed circuit board in the actuator.
11. The linear actuator according to claim 1 constructed as a telescopic lifting column with at least two mutually telescopic tubular members.
12. An article of furniture with at least two mutually adjustable parts where adjustment is performed by means of a linear actuator as defined in claim 1, where the actuator with one end is secured to one part of the article of furniture and with the other end is secured to the other part of the article of furniture.
13. The article of furniture according to claim 12, designed as a height-adjustable table.
14. The article of furniture according to claim 13, wherein the two telescopic lifting columns are oriented with the thinnest member facing upwards.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A base plate for an ostomy collection device, the base plate comprising a cover layer whereon an adhesive layer is at least partly disposed, a through-going hole extending axially through the base plate, wherein the base plate further comprises an inner area which encircles the through-going hole, and wherein the cover layer extends beyond the adhesive layer in a radial direction toward the through-going hole, thereby providing an overlap.
2. A base plate according to claim 1, wherein at least a part of the cover layer is a backing layer formed of a sheet material.
3. A base plate according to claim 2, wherein the backing layer is formed of a polyurethane film.
4. A base plate according to claim 1, wherein the cover layer in the inner area is a foam.
5. A base plate according to claim 1, wherein the overlap is between 5 and 15 mm.
6. A base plate according to claim 1, wherein the adhesive layer comprises at least two different adhesives disposed radially with respect to each other, and wherein the adhesive in the inner area is formed of a soft adhesive.
7. A base plate according to claim 6, wherein the radial extent of the soft adhesive in the inner area is between 4 and 10 mm, preferably 5 mm.
8. A base plate according to claim 1, wherein the adhesive layer in the inner area has swelling properties.
9. A base plate according to claim 4, wherein the foam is an open-celled foam.
10. A base plate according to claim 4, wherein the foam is a visco-elastic polyurethane foam.