A tension-mounted pole for mounting between two substantially parallel surfaces includes a central tubular body, a first telescoping tubular body having a telescoping first end coupled with the central tubular body and a free second end, and a second tubular body having a telescoping first end coupled with the central tubular body and a free second end. An extension mechanism is mounted to the central tubular body. The extension mechanism is configured to be manually actuated and has a toothed rack and pinion arrangement configured to simultaneously move the first and second tubular bodies in opposite directions relative to the central tubular body.

A one-touch type coupler for longitudinally interconnecting iron bars of the present disclosure includes a coupler housing, on both sides of which an iron bar fitting hole into which an iron bar is inserted is formed; a spring member, one side of which is seated on the inside of the iron fitting hole to apply elastic force and the radius of which is decreased gradually toward the insertion direction of the iron bar; a propping member which is seated on an upper end of the spring member and is composed of a seating part introduced toward an inner side of the spring member and a seating surface extending toward the outer radial direction from the upper circumference of the seating part by a predetermined length; a plurality of joining pieces which are seated on the propping member to surround the iron bar inserted into the inside of the iron bar fitting hole and a tapered first inclined surface is formed on an outer peripheral surface thereof; and a coupler cap, on the inside of which a tapered second inclined surface corresponding to the first inclined surface formed on the joining piece is formed and the inner diameter of which is decreased gradually toward the insertion direction of the iron bar, wherein a plurality of lengthwise grooves with a predetermined depth are formed on an inner peripheral surface of the joining pieces in a longitudinal direction of the joining piece at a predetermined interval so as to induce the surface contact with the lengthwise ribs formed on the iron bar, and a plurality of separation prevention protrusions, each of which is inclined at a predetermined angle are formed in the same direction with the direction of inserting the iron bar so as to induce the insertion of the iron bar between each of the plurality of lengthwise grooves and prevent the separation of the iron bar.

A telescopic device including an outer pipe, an inner pipe fitted in the outer pipe, and a sleeve disposed between the outer pipe and the inner pipe. The telescopic device contains a lock mechanism, containing two bosses, and located between the inner pipe and the outer pipe. A tripod is also provided.

A bolt arrangement that includes a bolt having an outer circumferential peripheral surface extending in a longitudinal direction of the bolt, and a sleeve providing an outer circumferential peripheral surface and an inner circumferential peripheral surface extending in a longitudinal direction of the sleeve. The inner peripheral surface has a tapering profile in its longitudinal direction. A portion of the outer peripheral surface of the bolt provides a corresponding tapering profile matching the tapering profile of the inner peripheral surface of the sleeve. Furthermore, the inner peripheral surface of the sleeve further includes a groove. A coupling arrangement and a method of dismounting a coupling arrangement is also provided.

A locking mechanism for a tripod.

A tension-mounted pole for mounting between two substantially parallel surfaces includes a central tubular body, a first telescoping tubular body having a telescoping first end coupled with the central tubular body and a free second end, and a second tubular body having a telescoping first end coupled with the central tubular body and a free second end. An extension mechanism is mounted to the central tubular body. The extension mechanism is configured to be manually actuated and has a toothed rack and pinion arrangement configured to simultaneous move the first and second tubular bodies in opposite directions relative to the central tubular body.

A vehicle shifter mechanism comprises a shift control member configured with an outer threaded portion proximate an upper end, and an inwardly tapered bore proximate the upper end. A shift lever is configured with an outwardly extending annular shoulder proximate a lower end. The annular shoulder has a tapered lower portion configured to register with the tapered bore of the shift control member. A locking nut is configured to fit over the shift lever and to mate with the threaded portion of the shift control member to compress the tapered lower portion of the annular shoulder to the tapered bore to fix the shift control member to the shift lever.

A locking mechanism for a tripod.

A steering device for small vehicles has a transverse control arm which is situated on a height-adjustable handlebar formed form two telescopic tubes. The inner tube has at least two openings or grooves which are formed at different heights and into which a latching element mounted in the outer tube can latch into position. A height-adjustment and locking device in the form of a clamping sleeve surrounds the two tubes at their connection point and is displaceable along the inner tube in the direction of the outer tube against the force of a spring. The locking device is provided, on its inner side, with a conically tapering end portion which engages around the outer tube and, in the relaxed state of the spring, acts on an outer surface of the latching element, which protrudes radially outward through an opening in the outer tube, and presses the latching element radially inward.

A telescoping device including an upper tubular body, a lower tubular body, and a fixing unit that releasably fixes the lower tubular body with respect to the upper tubular body. The fixing unit includes an operation body and a fixation body. The fixation body consists of an outer member, an upper inner member, and a lower inner member. On the outer member, inner peripheral upward inclined surfaces and inner peripheral downward inclined surfaces are formed. On the upper inner member, outer peripheral downward inclined surfaces are formed, and on the lower inner member, outer peripheral upward inclined surfaces are formed.