A multilayer wind spring for a display support and a lifting support thereof, the multilayer wind spring is formed by tightly attaching and winding multiple elastic metal sheets, each of the elastic metal sheets comprises: a stretching connection portion which is not involved in winding and unwinding and is always kept in an initial state, a movable sheet portion which is involved in winding and unwinding, and an unmovable wound portion which is not involved in stretching and is always kept in a wound state, the stretching connection portion, the movable sheet portion, and the unmovable wound portion are formed integrally and sequentially arranged in an unwinding direction, and the elastic metal sheets of the unmovable wound portions are arranged fixedly relative to one another.

A multilayer wind spring for a display support and a lifting support thereof, the multilayer wind spring is formed by tightly attaching and winding multiple elastic metal sheets, each of the elastic metal sheets comprises: a stretching connection portion which is not involved in winding and unwinding and is always kept in an initial state, a movable sheet portion which is involved in winding and unwinding, and an unmovable wound portion which is not involved in stretching and is always kept in a wound state, the stretching connection portion, the movable sheet portion, and the unmovable wound portion are formed integrally and sequentially arranged in an unwinding direction, and the elastic metal sheets of the unmovable wound portions are arranged fixedly relative to one another.

A torsion spring assembly according to the invention includes a torsion spring having a cylindrical spring body of wound spring wire and with a plurality of torsion spring windings, and having first and second torsion spring ends for taking up forces in a direction of rotation, and a damping spring abutting the torsion spring on the inner side and having a cylindrical spring body of wound spring wire and with a plurality of damping spring windings, and having first and second damping spring wire ends, wherein the damping spring windings have their outer sides extending partially into the space formed between two respectively adjacent torsion spring windings and abutting in particular rounded, round or beveled inner abutment areas of respectively adjacent torsion spring windings with substantially radially outwardly directed bias.

A torsion spring assembly according to the invention includes a torsion spring having a cylindrical spring body of wound spring wire and with a plurality of torsion spring windings, and having first and second torsion spring ends for taking up forces in a direction of rotation, and a damping spring abutting the torsion spring on the inner side and having a cylindrical spring body of wound spring wire and with a plurality of damping spring windings, and having first and second damping spring wire ends, wherein the damping spring windings have their outer sides extending partially into the space formed between two respectively adjacent torsion spring windings and abutting in particular rounded, round or beveled inner abutment areas of respectively adjacent torsion spring windings with substantially radially outwardly directed bias.

A full, one-piece, wrap around bumper for a crankshaft pendulum is disclosed. The pendulum includes two halves. Continuous, mirror-image bumper-receiving channels are formed in each pendulum half. When the two halves are attached, the bumper is captured between therebetween and is retained by a crush fit. Each pendulum half includes an elevated central area and a pair of recessed areas with each recessed area formed on one side of the elevated area. Side walls are formed at the intersections of the elevated area and the recessed areas. A base wall is formed along the lower edge of the elevated area. The continuous channel in each half is formed along portions of the side walls and along the entire length of the base wall. The elongated, one-piece bumper wraps around the side walls and the base wall and extends from the elevated area beyond the side and base walls.

A spring assembly with two or more springs, one inside another. The spring assembly can have two springs wherein one spring is located inside another spring, and the outer spring can be a helical ribbon spring and the inner spring can be a canted coil spring to provide support to the outer helical ribbon spring. Support is provided where the helical ribbon spring may have some limitations that the inner spring is able to overcome. Limitations of the helical ribbon spring may be a limited force versus deflection curve which the additional spring support of the secondary spring may overcome.

A spring assembly having at least two canted coil spring lengths nested together are disclosed. Two sections of coils of a canted coil spring length can each be positioned between two adjacent coils of another canted coil spring. Each section of the coils of the canted coil spring length includes at least one coil and up to several coils or a plurality of coils. The canted coil spring lengths are nested together to increase the deflection force of the overall spring assembly. The spring assembly having two or more nested spring lengths can be used in connector applications.

A spring assembly having at least two canted coil spring lengths nested together are disclosed. Two sections of coils of a canted coil spring length can each be positioned between two adjacent coils of another canted coil spring. Each section of the coils of the canted coil spring length includes at least one coil and up to several coils or a plurality of coils. The canted coil spring lengths are nested together to increase the deflection force of the overall spring assembly. The spring assembly having two or more nested spring lengths can be used in connector applications.

A joint for an orthopaedic device, in particular an orthosis or prosthesis, wherein the joint has a first element, at least one spring element and a second element, which is mounted so as to pivot on the first element against a force applied by the at least one spring element in at least one direction. The at least one spring element has at least two helical springs which in each case are wound from a spring strip having a longer cross-sectional side upright with respect to the spring axis and are screwed into one another in such a way that the longer cross-sectional side of at least one of the helical springs has an angle different from 90 relative to the spring and that the spring strips butt against one another.

A joint for an orthopaedic device, in particular an orthosis or prosthesis, wherein the joint has a first element, at least one spring element and a second element, which is mounted so as to pivot on the first element against a force applied by the at least one spring element in at least one direction. The at least one spring element has at least two helical springs which in each case are wound from a spring strip having a longer cross-sectional side upright with respect to the spring axis and are screwed into one another in such a way that the longer cross-sectional side of at least one of the helical springs has an angle different from 90 relative to the spring and that the spring strips butt against one another.