A coupling element includes at least one coupling member having a first end and a second end, wherein the coupling member has a flat face on a first side thereof, at least one barb extending in cantilever manner from the flat face and depending away from the first end so as to hinder or prevent the removal of the coupling element from a bore in a surface of a first article into which the coupling member has been inserted from the first end.

A coupling element includes at least one coupling member having a first end and a second end, wherein the coupling member has a flat face on a first side thereof, at least one barb extending in cantilever manner from the flat face and depending away from the first end so as to hinder or prevent the removal of the coupling element from a bore in a surface of a first article into which the coupling member has been inserted from the first end.

A dowel includes a body having a composition of polystyrene and possible glass filling or other material compositions Such a body further has a chamber with an axial bore extended along an entire longitudinal length thereof. A first slot begins from a proximal end of the body and terminates at approximately a midpoint of the longitudinal length of the body. A second slot begins from a distal end of the body and terminates at approximately the midpoint of the longitudinal length of the body. The first and second linear slots are axially offset to improve chamber compression and a series of ridges outer surface is provided to improve connectivity between to objects.

A dowel includes a body having a composition of polystyrene and possible glass filling or other material compositions Such a body further has a chamber with an axial bore extended along an entire longitudinal length thereof. A first slot begins from a proximal end of the body and terminates at approximately a midpoint of the longitudinal length of the body. A second slot begins from a distal end of the body and terminates at approximately the midpoint of the longitudinal length of the body. The first and second linear slots are axially offset to improve chamber compression and a series of ridges outer surface is provided to improve connectivity between to objects.

A hardware mounting bracket is provided with a bracket body adapted to be mounted to a support surface. A rigid retainer is provided on one end of the bracket body to receive hardware supported thereon. At least one elongate biasing retainer is provided on another end of the bracket body spaced apart from the rigid retainer, to engage hardware supported thereon and to provide a loaded surface contact with hardware supported thereon. A hardware mounting assembly, hardware for mounting to a support surface, and method for mounting hardware are also provided.

A fixing is described with a head portion (2), preferably formed as a headed stud (8, 9), and a dowel portion (1). The dowel portion (1) has a generally polygonal, preferably square, cross-section, and on each face is formed a series of barbs (4). The fixing is designed to be hammered into a hole of internal diameter corresponding to the external size of the shaft. Once inserted, the barbs (4) prevent easy extraction, e.g. from a chipboard or mdf-based furniture component. The fixing may have an axial hole (12) through which a secondary fixing, such as a headed screw, may pass, in order to render the force needed to pull the fixing out even greater.

A fixing is described with a head portion (2), preferably formed as a headed stud (8, 9), and a dowel portion (1). The dowel portion (1) has a generally polygonal, preferably square, cross-section, and on each face is formed a series of barbs (4). The fixing is designed to be hammered into a hole of internal diameter corresponding to the external size of the shaft. Once inserted, the barbs (4) prevent easy extraction, e.g. from a chipboard or mdf-based furniture component. The fixing may have an axial hole (12) through which a secondary fixing, such as a headed screw, may pass, in order to render the force needed to pull the fixing out even greater.

A load balancing arm for a medical device support system. The load balancing arm includes a proximal hub, an adjustable bearing element, a support arm, a spring and a link. A distal end of the support arm is configured to support a medical device load and a proximal end is pivotably mounted to a main bearing element for pivotable movement about a main pivot axis. The spring extends within a cavity of the support arm and is mounted to exert a biasing force between the main pivot axis and a distal end of the spring. The link has a proximal end pivotably mounted to the adjustable bearing element for pivotable movement about an adjustable pivot axis, and a distal end pivotably mounted to the distal end of the spring such that the biasing force exerted by the spring is transmitted through the link to the adjustable bearing element.

A fastener device, adapted to be installed on a wall through an aperture of the wall, has an inner stud that is sized to fit through the aperture of the wall, and an outer stud that engages the inner stud. The inner stud has a securing mechanism on an outer surface of the inner stud. A spiral structure has an inner diameter that is sized to receive the inner stud, wherein the inner diameter engages with the securing mechanism of the inner stud. The outer fastener engages the inner stud to compress the spiral structure into a washer-like structure.

A fastener device, adapted to be installed on a wall through an aperture of the wall, has an inner stud that is sized to fit through the aperture of the wall, and an outer stud that engages the inner stud. The inner stud has a securing mechanism on an outer surface of the inner stud. A spiral structure has an inner diameter that is sized to receive the inner stud, wherein the inner diameter engages with the securing mechanism of the inner stud. The outer fastener engages the inner stud to compress the spiral structure into a washer-like structure.