Tensioning eyewear are disclosed having expandable elastic and padded bands arrange and secured to the frame and truncated temples members to compliment rotation movement of the hinge assemblies wherein the said hinge assemblies provides the rotation movement of frame and temple members and expandable elastic and padded bands members provide the tension. When the eyewear is being worn by the user, the temples members are pivoted outwardly from the frame members and the expandable elastic and pad...

A tensioning assembly comprising a housing having a first sidewall and a second sidewall, and a ratchet mechanism disposed between the first sidewall and the second sidewall. The ratchet mechanism includes a tension release assembly biased in a first direction for lateral engagement with the ratchet mechanism, and lateral disengagement of the ratchet mechanism when pressure is applied to the tension release assembly in a second direction opposite to the first direction, is described herein. The ...

A device for tensioning a drive belt extending between a vehicle power source and its driven attachment is provided. The device includes first and second members slideably coupled together and adapted to extend between and operably engage a first powered shaft member and a second shaft member carried on the attachment. A compression spring is coupled with the slideable members for urging them apart and tensioning a belt entrained around pulleys carried on the two shaft members. An overcenter loc...

A belt (3) can be pulled out from a spring biased retractor reel (2) when a ratchet mechanism (16) is released. The belt (3) is entrained around a movable shoe (4) before being led to a fastening point. When fastened, the spring bias in the reel (2) takes up the slack. Operation of an actuator, such as by depression of a pedal (10), first causes the ratchet mechanism (16) to engage and then shifts the shoe (4) to stretch and tension the belt between the reel (2) and the fastening point. The peda...

A hinge assembly enables the setting of elements attached to the hinge assembly to any angle within the range of motion of the hinge assembly without the use of other mechanisms or parts.

A traction mechanism, in particular for driving the camshafts of an internal combustion engine, is provided. The mechanism includes a drive wheel, a driven wheel, a traction element and first and second tensioner slide rails. One slide rail can be subjected to a clamping force by a first clamping device that is supported both on the slide rail and externally. The first slide rail is connected to the second slide rail in a manner that transmits a defined force or displacement.

A tensioning unit for a strapping machine serves for tensioning and sealing a band guided around an item to be strapped. It has a tensioning head and housing. The tensioning head includes a tensioning device and clamping and sealing subassembly. Toward the end of a tensioning operation, the head can be displaced relative to the housing in a band-running direction, counter to tensioning direction. Also provided in the housing is a band guide arranged downstream of the clamping and sealing member,...

A tensioning arrangement is provided for applying a tensioning force to a strapping band. The tensioning arrangement includes a guide for the strapping band, a transporting device which can move the strapping band, and a drive for the transporting device, such that a predetermined tensioning force can be applied to the band. The arrangement is developed by a clamping device for fixing a section of the band during a tensioning phase, and by the transporting device, which can move the clamping dev...

A tensioning assembly for connecting an outer component to a shaft. The tension assembly includes a double conical ring with a cylindrical circumferential surface and two oppositely inclined conical surfaces, and also includes two further conical clamping rings with each conical clamping ring having a conical circumferential surface which interacts with one of the conical surfaces of the double conical ring. Axial tensioning screws and axial forcing screws are uniformly distributed over the circ...

A strap tensioning apparatus having a U-shaped housing with two upstanding walls, each all provided with an opening for rotatably supporting a rigid elongated bolt having a head at one end and threaded at the other end to threadedly engage a nut. A washer is secured on the bolt shank proximal to the head. Radial ratchet protrusions are coined on the washer surface and complementary ratchet engaging surfaces are formed on one wall of the U-shaped housing to provide one-way rotation of the bolt th...