Abstract: An adjustable support for a microphone, lights, etc. includes a pair of elongated tubes in telescopic relationship and an engager carried by the inner tube for releasably engaging the interior surface of the outer tube. The engager includes an elongated wedge member vertically movable between locking and unlocking positions and a plurality of substantially rigid ball bearings dimensioned to releasably engage the interior surface of the outer tube against relative longitudinal movement of the tubes in a given direction when the wedge member is in the locking position and to enable such relative longitudinal movement of the tubes in the given direction when the wedge member is in the unlocking position.

Abstract: An adjustable support for a microphone, lights, etc. includes a pair of elongated tubes in telescopic relationship and an engager carried by the inner tube for releasably engaging the interior surface of the outer tube. The engager includes an elongated wedge member vertically movable between locking and unlocking positions and a plurality of substantially rigid ball bearings dimensioned to releasably engage the interior surface of the outer tube against relative longitudinal movement of the tubes in a given direction when the wedge member is in the locking position and to enable such relative longitudinal movement of the tubes in the given direction when the wedge member is in the unlocking position.

Abstract: A collapsible structure includes first and second longitudinally extending rigid members, and a connector pivotally connecting the first and second members for movement between a compact storage orientation, wherein the first and second members extend longitudinally in a substantially parallel relationship, and an erected use orientation, wherein the first and second members extend longitudinally in a substantially non-parallel relationship. Movement between the storage and use orientations requires movement of the second member through an arc greater than 180° and less than 360° into a reflex angle relative to the first member.

Abstract: A collapsible structure includes first and second longitudinally extending rigid members, and means pivotally connecting the first and second members for movement between a compact storage orientation, wherein the first and second members extend longitudinally in a substantially parallel relationship, and an erected use orientation, wherein the first and second members extend longitudinally in a substantially non-parallel relationship. Movement between the storage and use orientations requires movement of the second member through an arc greater than 180° and less than 360° into a reflex angle relative to the first member.

Abstract: This invention concerns a coupling for connecting two rods, said coupling being characterised by a cylindrical hollow body closed at one end with a jaw-shaped bottom wall and a clamp consisting of two jaws housed and sliding in a sleeve placed in a off-centre and slanted position with respect to said body.

Abstract: The present invention is for an improved stand (2) typically of the music variety. The improvements consist of a stabilizing cam (10) and a compact, centrally located, adjustable position memory element (16). The stabilizing cam (10) may be used in a variety of structures to micro adjust the level of the stand (2) to provide better support and stability. The adjustable position memory element (16) may be used on a variety of devices as well including an articulable support stand such that the support stand can be returned upon reuse to a preselected position from a plurality of preselected available positions.

Abstract: A stand, in particular a stand for a musical instrument keyboard, comprises two double-T stand segments which are connected with one another so as to be swivelable out of a rest position into a working position in the manner of a pair of scissors. A locking gear mechanism is included for determining the swivel angle and, accordingly, the working height of the stand segment associated with the swivel axis of the stand segments. The locking gear mechanism has a catch member which is associated with one stand segment. The other stand segment has an associated locking member of the locking gear mechanism acting against the force of a spring. The locking gear mechanism is a directional locking gear having a locking disk with a plurality of catch notches for determining the working positions. The locking member is in the form of a catch lever which is arranged tangentially to the locking disk and engages in the catch notches in the radial direction.

Abstract: An adjustable portable stand, for supporting an elongate instrument (such as a guitar) by its base in a generally upright orientation, includes a multileg assembly including at least first and second vertically extending rigid legs disposed at a relative angle. First and second supports project outwardly from the first and second legs, respectively, for cooperatively supporting the base of an elongated instrument thereon, each of the supports being independently adjustable along the longitudinal axis of its respective leg and fixable at a selected point therealong. The supports are independently adjustable in height relative to the assembly to compensate for any bilateral asymmetry in the instrument base and thereby cooperatively maintain the instrument in a generally upright orientation.