A bolt retention device is provided that includes a bolt having a shaft, a retention portion that includes a radial retention surface extending along the shaft, a sleeve having a cylindrical base with an inner bore, and at least one rib extending radially from the cylindrical base, wherein the retention portion has a diameter sized to receive the inner bore of the sleeve, and wherein the bolt is inserted into the sleeve to align the retention portion with the inner bore of the sleeve. The sleeve works to retain the bolt in a coupling aperture by applying a resistive force in the direction opposite the direction of motion. This resistive force is caused by physical interference created by the ribs against the inner bore of the coupling aperture. The ribs may vary in shape to create different desirable resistive characteristics.

A washer includes a single piece body made of a resilient and flexible material and having a split extending between an inner circumferential edge and a radially outer peripheral edge to provide the body with first and second ends. One end has circumferentially extending and radially spaced fingers, and the other end has circumferentially extending and radially spaced fingers. A joint structure is integrally formed with the first and second ends. The joint structure includes a first locking mechanism and a second locking mechanism. The second locking mechanism is only engageable after the first locking mechanism is fully engaged.

An arrangement includes a housing and a printed circuit board (PCB) arranged vertically above the housing. The housing includes: at least one protrusion attached to sidewalls and arranged on an outside of the housing at a lower end with at least one first through hole provided in the protrusion; holding devices each arranged inside a first through hole and/or between the PCB and the first through hole; and fastening elements configured to attach the housing to a heat sink or base plate. Each holding device is configured to clamp a corresponding fastening element such that the fastening elements are secured in defined positions, and to align each fastening element with a different first through hole. The PCB includes second through holes each arranged vertically above and aligned with a different fastening element. A diameter of each second through hole is less than the largest diameter of the respective fastening element.

A fastener for retaining a bolt in a hole in a structure, comprising a bushing integrally formed with and extending from the bottom surface of a retainer, the bushing being dimensioned for insertion into the hole in the structure and having a wall thickness ranging from about 0.005 inches to about 0.030 inches, wherein the bushing is configured to be expanded within the hole, thereby securely coupling the expanded bushing within the hole of the structure and anchoring the retainer to the surface of the structure surrounding the hole. A tool for installing a fastener, comprising a tapered mandrel configured for insertion within a fastener situated within a hole of the structure, a drive mechanism configured to retract the mandrel through the fastener and thereby expand the fastener, and a force sensor configured for measuring a force applied by the drive mechanism to retract the mandrel through the fastener.

The present invention relates to side tensioning assemblies for retaining screen media to the side plates of a vibrating-type screening machine. The side tensioning assembly includes a tensioning rail and at least one angle box mountable to a side plate. At least one bolt assembly provided for fastening the tensioning rail to the side plate and to angle box. Bolt assembly is provided with is a shoulder bolt that is secured to a terminal end of the bolt. The angle box includes an aperture sized to allow the bolt assembly passage therethrough, and a movable plate with a cutout. The cutout is sized larger than the bolt but smaller than a nut. The movable plate has a bolt-securing position and a bolt-releasing position to allow access to the aperture in the angle box such that the bolt assembly can be detached from the angle box without being disassembled.

A grommet is at least partially comprised of a clear, rigid material is disclosed. The body of the grommet tapers from a proximal end to a distal end, allowing the grommet to be guided into a hole in a post of a handrail system. The interior of the body includes an longitudinal cannulation open to the exterior of the grommet via a helical cut in the surface, allowing for a wire rope to pass through. The grommet can be installed whether or not a wire rope has previously been passed through a railing post.

A coupling mechanism is provided for coupling a supporting element to a frame, and includes a base member and a C-shaped retainer. The frame includes a frame body and a leg member that has a leg body extending downwardly from the frame body to terminate at an enlarged leg end. The base member defines therein a recess for the enlarged leg end therein. The supporting element is coupled to a lower major surface of the base wall. The C-shaped retainer extends to be disposed about the leg body, and is configured to be detachably coupled to a surrounding wall of the base member for retaining the enlarged leg end in the recess.

Provided is a stud system for connecting a first flange to a second flange of a tower, the flanges including arrangements of openings in the first flange corresponding to arrangements of threaded blind openings in the second flange, with a predefined opening-length and a predefined opening-diameter of the openings in the first flange and a predefined non-threaded length and a predefined threaded length of the threaded blind openings in the second flange, the stud system including: a stud bolt with a head end, a threaded end and an intermediate portion, and a spacer tube partly encompassing the stud bolt with an outer diameter bigger than the predefined opening-diameter, wherein the stud bolt includes stopping means at the head end, preventing the spacer tube from slipping over the head end. The spacer tube) constructed such that it can be removed laterally from the stud bolt.

A floating connection fastening system employs a semi-flexible floating bushing having a sleeve that may have an axial slot which captures a fastener having a head, an unthreaded shank portion and a threaded portion. The sleeve may have an outer primary surface and a plurality of protuberances that project outward from the outer primary surface. An offset cap mounts to the bushing/fastener assembly and receives a driver bit. The offset cap defines an offset clearance for installation of the fastener and bushing. The floating connection is installed by driving the fastener through a non-load bearing member so as to form a bore and threadably engage a load bearing member. The floating bushing has a flange which engages the surface of the non-load bearing member, and the sleeve is entirely received in the formed bore.

A fastener for retaining a bolt in a hole in a structure, comprising a bushing integrally formed with and extending from the bottom surface of a retainer, the bushing being dimensioned for insertion into the hole in the structure and having a wall thickness ranging from about 0.005 inches to about 0.030 inches, wherein the bushing is configured to be expanded within the hole, thereby securely coupling the expanded bushing within the hole of the structure and anchoring the retainer to the surface of the structure surrounding the hole. A tool for installing a fastener, comprising a tapered mandrel configured for insertion within a fastener situated within a hole of the structure, a drive mechanism configured to retract the mandrel through the fastener and thereby expand the fastener, and a force sensor configured for measuring a force applied by the drive mechanism to retract the mandrel through the fastener.