Abstract: A positioning fixture for positioning a workpiece includes a base, a support mounted on the base and for receiving the workpiece, two toggle clamps mounted on two opposite sides of the base and the support and an upper cover placed on the support. The upper cover cooperates with the two toggle clamps to position the workpiece on the support.

Abstract: A machine for pipe maintenance, which travels forward through a pipeline and effectively removes foreign substances sticking to the inside of a pipeline, using friction members 70 that are moved along the inside of the pipeline by a rotator assembly 30 and rotated by rotating shaft assemblies 50, which come in contact with the inside of the pipeline is disclosed. Further, rotating shaft assemblies 50 and a rotator assembly 30 are respectively rotated by first and second rotating units 40, 60, such that it is possible to maximize the effect of removing foreign substances in the pipeline by smoothly rotating the friction members 70, and also improve durability by preventing an erroneous operation and damage due to load that is applied during the operation.

Abstract: Various embodiments of a vehicle jack include a base, an upright support mounted adjacent to and extending upwardly from the base, a toothed rack, a toothed bar pin, and a release handle. The toothed rack has a first end and a second end and defines a plurality of ratchet troughs therebetween, and the toothed rack is mounted adjacent the upright support. The ratchet assembly is adapted to move along a path defined by the upright support, and the toothed bar pin, which is mounted adjacent the ratchet assembly, is adapted to selectively engage a portion of the toothed rack adjacent one of the plurality of ratchet troughs as the ratchet assembly moves along the path. The release handle is mounted adjacent the second end of the toothed rack, and the release handle is adapted to selectively disengage the toothed bar pin from one of the plurality of ratchet troughs.

Abstract: An assembly comprises a platform including a first clamping surface, a track proximate to an edge of the first clamping surface, and a clamp mechanism including a second clamping surface. The clamp mechanism is configured to clamp a workpiece between the first clamping surface and the second clamping surface. The clamp mechanism is mounted to the track. The clamp mechanism is positionable at different locations along the track. The assembly may further comprise one or more adjustable spacer blocks mountable to the track to facilitate precisely positioning a workpiece proximate to the track at least two different spacings.

Abstract: A foldable toothbrush has a shell, a cover, a mounting sleeve, a handle and multiple bristles. The cover is mounted pivotally to the shell and selectively covers the top opening and part of the front opening of the shell. The mounting sleeve is mounted pivotally to the shell and is selectively pivoted into the shell. The handle is mounted in the mounting sleeve and is selectively rotatable and slidable in the mounting sleeve. The bristles are attached to the handle. With the handle being rotatable and slidable in the mounting sleeve, the whole length of the toothbrush is adjustable to selectively adapt for using or stowing. Furthermore, the cover keeps the handle and the bristles clean when stowing.

Abstract: An assembly for adjusting belt tension in a drain cleaning device is disclosed. The assembly includes an idler pulley assembly in which a pivotable idler pulley is urged against a belt by a tensioned spring. The tensile force exerted by the spring can be adjusted or otherwise changed by a rotatable spool engaged to the other end of the spring.

Abstract: A bolt brush includes a housing, a scraper and a ring plate. The housing has a holding space which is provided with an opening at an end and emplaces the scraper, an inner wall of the housing, close to that opening, is surrounded with a ring groove, and a side of the scraper is provided with plural brush hairs. The ring plate is locked in the ring groove, a side of the ring plate is an opening, and more than one pick-up member is formed close to that opening.