Disclosed is a resilient fastening arrangement (200) for construction of a vibration damping assembly (100) comprising at least a first structure (110) and a second structure (120). The resilient fastening arrangement (200) comprises a first part (210) for fixation to the first structure (110) of the assembly (100) and a second part (220) for engagement with the second structure (120) of the assembly (100). The arrangement (200) further comprise a third part (230) arranged to resiliently connect the first part (210) to the second part (220) along an arrangement axis (D). The third part (230) comprises a resilient member arranged to at least partially extend within a hole (125) of the first structure (110) and/or of the second structure (120) of the assembly (100). Further resilient fastening arrangement (200), vibration damping assemblies (100) and a method for constructing a vibration damping assembly (100) are disclosed.

An anti-loose structure includes a head, a body and an anti-loose member. The head includes an engaging portion for assembling with a first object or a second object. The body is joined with the head. The anti-loose member is provided between the head and the body or between the head and the first object, and can be abutted against the head and the body or abutted against the head and the first object to prevent loosening of or to tighten the engaging portion assembled at the first object or the second object. Thus, once the engaging portion is engagingly connected to the first object or the second object, the engaging portion assembled at the first object or the second object is tightened by using the anti-loose member, so as to prevent loosening or moving of the first object or second object, thus achieving an effect of secure joining.

A heat sink mounting configuration is provided that is configured to prevent the heat sink from damaging ball grid arrays (BGA) of an application specific integrated circuit (ASIC) mounted on a printed circuit board (PCB) when the line card is subjected to vibrations and shocks. The heat sink mounting configuration may include a set of screws configured to be at least partially disposed within the apertures of the heat sink to secure the heat sink to the PCB. The mounting configuration includes a resilient member and a spacer disposed around the screws proximate to the apertures. The resilient members are configured to bias the heat sink against the ASIC to maintain the heat sink in contact with the ASIC. The spacers are configured to prevent the heat sink from impacting the ASIC with forces large enough to damage the BGA when the line card is subjected to vibrations and shocks.

A tolerance compensation fastening apparatus (1) for fastening a first vehicle component (200) to a second vehicle component (300) by way of a bolt (100), the fastening apparatus being set up to compensate for a tolerance within a tolerance compensation range. A fastening system including such a fastening apparatus, as well as to a method for fastening a first vehicle component to a second vehicle component by way of a bolt.

A connection apparatus for attaching a first truss to a second truss has first and second connection segments, a bolt and an optional spring. The first connection segment has an aperture dimensioned to receive a threaded end and shank of the bolt. The aperture is also dimensioned to prevent the head end of the bolt and the threaded end from passing through. The aperture comprising a recess for receiving the second end of the spring. The first connection segment has a side opening, open to the aperture, dimensioned to receive the shank of the bolt. The first connection segment has a shoulder portion within the aperture dimensioned to closely fit around the shank and prevent the threaded end of the bolt from passing therethrough. The second connection segment for attaching to the second truss has a threaded hole dimensioned to fixably receive the threaded end of the bolt.

A flooring substrate system that uses one of three substrate components upon which various types of finish flooring may be attached above a deck structure. The deck structure may be open lumber framed or may be a waterproofed planar surface. Affixation of the flooring system may be by direct connection or by gravitational placement. Height and slope adjustable components interlock through a plunge, twist and locking teeth arrangement to form supporting members beneath the substrate components. A special fastening system is utilized between two of the substrate components to provide lateral stability to the top reversible structural panel.

This disclosure relates to a mounting assembly including a screw, an elastic component and a first base. The screw includes a head part, a neck part and an engaging part. The head part and the engaging part are respectively connected to two opposite sides of the neck part which is disposed through the elastic component. The elastic component includes a first side and a second side opposite to each other. The first side presses against the head part. The first base includes a first screw hole. The neck part is disposed through the first screw hole. The head part and the engaging part are respectively located at tow opposite sides of the first base. The second side of the elastic component presses against the first base. In addition, a largest outer diameter of the engaging part is larger than a smallest inner diameter of the first screw hole.

A control device includes a head portion and a body portion. The body portion is movably fitted to the head portion. Lateral buoyancy level, vertical buoyancy level or rotational buoyancy level between the head portion and the body portion enables the shifting, tightening, restrictive abutment or rotational abutment between the head portion and the body portion. Therefore, the body portion of the control device is fitted to a body portion of a first object, and the head portion of the control device engages or removes a second object, so as to achieve the coupling and separating of the first and second objects. Hence, the control device can couple together and separate the first and second objects repeatedly and rapidly.

An apparatus to expand and collapse planar board provided. The apparatus includes two planar boards and provides resistance to expansion and collapse.

A connection apparatus for attaching a first truss to a second truss has a first and second connection segment, a bolt and an optional spring. The first connection segment has an aperture dimensioned to receive the threaded end and the shank of the bolt. The aperture is also dimensioned to prevent the head end of the bolt and the threaded end from passing through, and the aperture comprising a recess for receiving the second end of the spring. The first connection segment also has a side opening, open to the aperture, dimensioned to receive the shank of the bolt. The first connection segment also has a shoulder portion within the aperture dimensioned to closely fit around the shank of the bolt and prevent the threaded end of the bolt from passing therethrough. The second connection segment for attaching to the second truss has a threaded hole dimensioned to fixably receive the threaded end of the bolt.