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.

Construction is achieved of a cam device that is able to effectively prevent a drive-side cam from rotating relative to a driven-side cam in a locked state. Tip-end butt sections 63 are provided on the outer-diameter side portions of tip-end surfaces 41a (40a) of convex sections of one of drive-side convex sections 34a of the drive-side cam surface 31a and driven-side convex sections 36a of the driven-side cam surface 32a, and tip-end concave sections 64 that are further recessed in the axial direction than the tip-end butt sections 63 are provided on the inner-diameter side portions of the one convex sections. In the locked state, only the tip-end butt sections 63 come in contact with the tip-end surfaces 40a (41a) of the other convex sections of the drive-side convex sections 34a and the driven-side convex section 36a.

This clamping device includes a clamping collar intended to surround an element to be clamped and open so as to have two ends able to come closer to one another in order to grip the element to be clamped. This device also includes a lever, mounted tilting on the ends of the collar around a tilting axis perpendicular to a central axis of the collar, and connected to the collar by a cam system able to be actuated by tilting the lever. The cam system includes at least one pair associating a cam surface and a counter-cam surface, which are each globally helical and which are respectively connected in rotation to the collar and the lever. The cam surface of each pair includes a first surface portion, against which the counter-cam surface is pressed when the lever is in an open position and is tilted from the open position to a closed position, and a second surface portion, which is connected to the first portion and against which the counter-cam surface is pressed when the lever is in the closed position and tilted from the closed position toward the open position. The counter-cam surface includes a main part, which is helical, while being centered on the tilting axis and having a constant pitch, and which is pressed along the tilting axis against the second surface portion of the associated cam surface when the lever is in the closed position. Furthermore, the cam surface defines a bearing helix at which the bearing stresses are applied between the cam and counter-cam surfaces, this bearing helix winding around the tilting axis and extending at least partially over the first and second portions. In order to improve this clamping device, in particular for its use on rental cycles, the bearing helix of the cam surface has a helix angle that is larger on the first portion than on the second portion of the cam surface, while this second portion of the cam surface has a pitch that is substantially equal to the constant pitch of the main part of the associated counter-cam surface.

A method and apparatus for a curtain rod bracket and cam lock. A tension rod assembly includes a tension rod, a first curtain rod bracket assembly, the first curtain rod bracket assembly including a first bracket base, a first bracket arm and a first friction pad, the first bracket base including a first bracket base front, a first bracket base rear and defining a first friction pad mounting opening that communicates the first bracket base front with the first bracket base rear, and a second curtain bracket assembly, the second curtain rod bracket assembly including a second bracket base, a second bracket arm and a second friction pad, the second bracket base including a second bracket base front, a second bracket base rear and defining a second friction pad mounting opening that communicates the second bracket base front with the second bracket base rear.

A telescoping rod is adjustable to a range of household environments and includes a first tubular member defining a primary axis. A cam body is secured to an end of the first tubular member, and the cam body defines ramped outer surfaces that vary in distance from the primary axis as a function of angular position about the axis. A second tubular member is sized to slide over the first tubular member and the cam body. The rod also includes a first cam sleeve and a second cam sleeve disposed about the ramped outer surfaces of the cam body. Rotation of the second tubular member about the primary axis relative to the cam body causes the first and the second cam sleeves to exert outward forces against an inner surface of the second tubular member that are applied at substantially different angles relative to each other.

A tube device includes a first tube, a second tube sleeved to the first tube, and a locking member assembled in a sleeve connection position between the first tube and the second tube and received in the second tube. The first tube is received in the second tube. When the first tube is rotated, the first tube drives the locking member to abut against an inner wall of the second tube until the first tube and the second tube are in a locking position.

A telescopic assembly, particularly suited to a tripod or monopod, having a plurality of telescopically arranged tube assemblies. Each tube assembly has a support tube, a locking assembly, and an actuating tube operatively engaged with, and slidably movable within, the locking assembly. The support tube telescopically receives a further locking assembly and an end of a corresponding further support tube of another of the plurality of support tubes and the actuating tube telescopically receives an end of a corresponding further actuating tube of another of the plurality of actuating tubes. Advantageously, all segments of the telescopic assembly can be unlocked, extended or retracted, and locked with a single actuator.

A method and apparatus for a curtain rod bracket and cam lock. A tension rod assembly includes a tension rod, a first curtain rod bracket assembly, the first curtain rod bracket assembly including a first bracket base, a first bracket arm and a first friction pad, the first bracket base including a first bracket base front, a first bracket base rear and defining a first friction pad mounting opening that communicates the first bracket base front with the first bracket base rear, and a second curtain bracket assembly, the second curtain rod bracket assembly including a second bracket base, a second bracket arm and a second friction pad, the second bracket base including a second bracket base front, a second bracket base rear and defining a second friction pad mounting opening that communicates the second bracket base front with the second bracket base rear.

The baton stand is a training device that is configured for use with a baton that is used in the relay race events of a track and field competition. The baton stand is a container within which a baton can be placed or removed as a runner passes by the baton stand. The baton stand is adjustable such that the baton stand will simulate the angle and height the baton should be in during the acceptance or hand off of the baton. To use the baton stand, a runner runs past the baton stand and, depending on the objective of the training exercise, will place the baton into or remove the baton from the baton stand. The baton stand comprises a telescopic stanchion, a stand, a basket, and a locking hinge. The stand attaches to the telescopic stanchion. The locking hinge attaches the basket to the telescopic stanchion.

A telescopic tripod with linkage locking is provided, which includes a support base, and three sets of first support tubes are hinged on the support base along a circumferential direction, wherein a sliding seat is slidably installed on the first support tube, a second support tube is fixedly installed on a lower side of the sliding seat, an installation seat is installed at a lower end of the second support tube, and a third support tube is slidably installed inside the installation seat. The sliding seat is provided with a first compression member controlled by a locking member, the installation seat is provided with a second compression member connected to the locking member through a first steel cable, and the second compression member is in contact with the third support tube. The telescopic tripod can realize a joint locking effect and make the operation more convenient.