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.

An oil pressure control device controls a supply pressure of oil supplied to an oil pressure chamber of a friction element having a first engagement board and a second engagement board engaged with or disengaged from each other between a non-engagement state and a non-sliding engagement state via a sliding engagement state. The oil pressure control device includes: an electromagnetic valve that controls the supply pressure using a spool which reciprocates according to an energizing amount; and a control part that defines a first oscillatory wave part in which the energizing amount is controlled by making a first waveform with a first frequency to superimpose on a second waveform with a second frequency higher than the first frequency during a first period while the sliding engagement state and an instruction value of the supply pressure are kept constant.

A quick release assembly for a side roll tarp has a roll-tube coupler connected to a roll-tube for rolling and unrolling the side roll tarp. A drive coupler is connected to a shaft of a motor, the drive coupler fitting within an opening in the roll-tube coupler. The drive coupler has a first groove and second groove circumferentially around an exterior of a circular shaft below a head portion of the driver coupler. A quick release pin traverses through a pair of tangential openings in the body of the roll-tube coupler to engage the first or second grooves of the drive coupler, wherein the driver coupler is engaged with the roll-tube coupler when in the first groove allowing the motor to drive the roll-tube and disengaged from the roll-tube coupler when in the second groove allowing the roll-tube to be rotated independently of the motor.

A quick release assembly for a side roll tarp has a roll-tube coupler connected to a roll-tube for rolling and unrolling the side roll tarp. A drive coupler is connected to a shaft of a motor, the drive coupler fitting within an opening in the roll-tube coupler. The drive coupler has a first groove and second groove circumferentially around an exterior of a circular shaft below a head portion of the driver coupler. A quick release pin traverses through a pair of tangential openings in the body of the roll-tube coupler to engage the first or second grooves of the drive coupler, wherein the driver coupler is engaged with the roll-tube coupler when in the first groove allowing the motor to drive the roll-tube and disengaged from the roll-tube coupler when in the second groove allowing the roll-tube to be rotated independently of the motor.

Fastener embodiments of the invention comprise a freely translatable collet body, which at least partially translates within an auxiliary structure, and further comprise a captive threaded screw for rotationally engaging with the collet body to transform rotational movement into translational movement through substantial arresting of collet body rotation by way of an anti-rotation means. The screw comprises a free-spin feature that functionally, but not physically, decouples a drive tool from the collet body.

An improved fastener with an annular sealing flange disposed above a lead-in base clip portion adapted for insertion into an acceptance opening in a panel or other structure. A heat-shrunk seal is disposed about the perimeter of the annular sealing flange in partial covering relation to upper and lower surfaces of the annular sealing flange to provide an enhanced sealing relation between the sealing flange and the panel.

Disclosed is a speaker unit which includes a speaker surface provided in a bottom surface of a cabinet section and a provisionally fastening mechanism provided on a side surface of the cabinet section. The provisionally fastening mechanism includes: an engagement section for provisionally fastening the speaker unit to the mounting part; an operating section exposed on a face side of a mounting part with the speaker unit provisionally fastened via the engagement section; and a non-shielded portion formed adjacent to the outer periphery of the speaker surface for allowing the operating section to be visible from a face side of the speaker surface. The non-shielded portion is an opening or a recess formed in a flange section projecting radially outward from the outer peripheral edge of the bottom surface of the cabinet section.

A fastener having a damping function with which at least a first and a second component can be connected via a screw connection. The fastener consists of the following components: an elastically deformable outer sleeve, a support sleeve arranged therein and a screw sleeve with telescopic portion arranged in the outer sleeve. When establishing the connection between the components, the outer sleeve folds, whereby the support sleeve and the screw sleeve are moved into each other.

This invention is a fastener. The fastener has a body, a clamper and a restraint. The body is provided with a coupling part, which comprises a discontinuous raised rib going around an outer surface of the coupling part; the clamper is fitted over the coupling part; a recess going around an inner surface of the clamper; the raised rib is fitted to the recess; the restraint is arranged to surround the clamper, so the restraint is capable of restricting the clamper in a certain position range of the body.

A fastener assembly for use with one or more workpieces. The fastener assembly can be a single-sided (i.e., blind) fastener assembly in which the fastener assembly is inaccessible from one side of the workpiece(s). In this regard, the workpiece(s) can make-up an enclosed component, for example. The fastener assembly can have a fastening end, such as a threaded stud, for securement with a distinct component that is otherwise detached from the fastener assembly. The workpiece(s) can be composed of a carbon fiber composite material, an aluminum material, or another type of material.