Abstract: A range hood support lift for positioning and supporting the weight of range hoods, exhaust vents, microwave ovens, and the like during the installation process. The range hood support lift includes a support section having a plurality of support arms. A base section includes a plurality of legs and a scissor section separates the plurality of legs. In use, the base section adjusts the height of the support section above the base section and the scissor section adjusts the distance between the plurality of legs.

Abstract: An adjustable backdrop support system kit includes at least two interlocking bars, two adjustable tripod stands and a backdrop, during usage, the at least two interlocking bars are interlocked with each other to form a supporting crossbar having two ends which are respectively on tops of the two adjustable tripod stands to configure a support system for supporting a backdrop at a predetermined height, wherein the backdrop is adapted for being supported by the supporting crossbar and being extending downward to provide a photographing background environment.

Abstract: A fire hose support assembly for inhibiting a fire hose from kinking includes a pole that has a plurality of telescopic sections such that the pole has a telescopically adjustable length. The plurality of telescopic sections includes a lower section, a middle section and an upper section. A trough is pivotally attached to the pole and the trough has a concave profile to conform to the shape of a fire hose. The pole is vertically oriented on a support surface having the trough being spaced upwardly from the support surface. In this way the trough can support the fire hose in a manner that inhibits the fire hose from kinking when the fire hose is attached to a fire engine.

Abstract: A quick disconnect mount includes a mounting stud securable to a structure, and a connector securable on the mounting stud. The mounting stud includes at least one circumferential ridge and at least one circumferential trough, and the connector includes a central channel sized to fit over the mounting stud and a locking bar engageable with the circumferential trough.

Abstract: A lift buffering structure includes a hollow column-shaped housing, a holding seat fixedly connected to an inner wall surface of the hollow column-shaped housing, an inner stem disposed in the hollow column-shaped housing and slidably extended through the holding seat, an elastic element having an end connected to the inner stem and another end to the holding seat to limit a travel stroke of the inner stem, an abutting unit disposed at one side of the holding seat opposite to the elastic element and having a width downward reduced gradually along a height direction of the hollow column-shaped housing, and an anti-slip unit connected to a lower end of the inner stem and located between the abutting unit and the inner wall surface of the hollow column-shaped housing. The lift buffering structure having the above structure can overcome a lot of problems in the conventional gas and oil struts.

Abstract: A positioning structure for tripod stand for quickly releasing a clamping state, comprising a main tube, upper, middle and lower binding sleeves and three support rods. The binding sleeves are sleeved on the main tube to rotate freely. The middle binding sleeve comprises a sliding slot provided with an upper clamping column, a lower clamping column and a spring. The upper and lower clamping columns are connected with upper and lower pressing keys protruding out of the middle binding sleeve. When the pressing keys are pressed, the spring is compressed and the clamping columns no longer protrude from the upper and lower sides of the middle binding sleeve. The clamping state can be released and the support rods of the binding sleeves can be freely rotated by pressing the binding keys, so that the three support rods can be rotated to a storage position or an unfolding position.

Abstract: A fixing structure for a foot ring of a chair includes a hub with a central hole formed with internal threads on an inner surface thereof; and a bush being a cylindrical body having a tapered outer surface with external threads. The bush has a shaft hole penetrating along a longitudinal axis of the bush, a groove penetrating through a wall of the bush, and at least one pad provided on an inner surface of the shaft hole. The bush is assembled with the hub by screwing the external threads of the bush with the internal threads of the hub. A supporting post penetrates through the shaft hole. When the bush rotates toward a first direction, the shaft hole is reduced to clamp and fix the supporting post, and when the bush rotates toward a second direction, the shaft hole is enlarged to release the supporting post.

Abstract: A tripod has an upright rod, a stationary rod, a rotatable rod, a slidable rod, and a positioning assembly. Connecting ends of the stationary rod, the rotatable rod, and the slidable rod are mounted to the upright rod. The positioning assembly is mounted inside the upright rod and includes a locking element and at least one compression spring. The rotatable rod is able to pivot to allow a positioning hole of the rotatable rod to align with a first through hole of the upright rod. As a height position of the slidable rod is adjusted, the locking element is pushed by the at least one compression spring to allow the locking element to fix the rotatable rod at the specific angular position. Accordingly, it is convenient and time saving for a user to unfold or fold the tripod.

Abstract: A rectangular stage includes a deck supported by a frame and removable legs. The legs insert into a corner receiving assembly below the stage deck at each corner. The leg receiving assembly includes a cylindrical socket into which the top of the leg inserts. The leg receiving assembly also includes a retaining linkage that extends through a slot in the side of the socket and engages the leg. The retaining linkage also includes a manually actuatable latch coupled to the cam to maintain the cam in engagement with the leg.

Abstract: A latch assembly and telescoping mast having a plurality of telescoping tube sections including the same wherein the latch assembly includes a first latch member mounted to an associated first tube section, a second latch member mounted to an associated second tube section and configured to selectively engage the first latch member to interlock the first and second associated tubes when the associated first tube section is at least partially extended from the associated second tube section, and a trigger member mounted to an associated third tube section. The second latch member includes a latch housing having an opening configured to receive the trigger post when the second associated tube section is retracted into the third associated tube section.

Abstract: The present invention provides a tent having a retractable roof. A plurality of poles extend substantially perpendicular to the ground. A roof frame is fastened to the plurality of poles and a tarpaulin is attached on the roof frame. At least one of the plurality of poles is divided into an upper pole and a lower pole, and a connection mechanism detachably connects the upper pole and the lower pole.

Abstract: According to some embodiments, an adjustable assembly for a bicycle comprises a first support and a second support slidably positioned within at least a portion of the first support, such that one of the first support and the second support is adapted to attach to a first bicycle portion and the other of the first support and the second support is adapted to attach to a second bicycle portion. In some embodiments, the second support comprises an expansion portion configured to be selectively moved between an expanded position and a retracted position. In one embodiment, the expansion portion is configured to contact and engage at least one portion of the first support when the expansion portion is in an expanded position, and the first support is configured to be selectively moved relative to the second support when the expansion portion is permitted to assume a retracted position.

Abstract: A rotary tool includes a housing defining at least one slot and a motor including an output shaft supported within the housing. A collet chuck is coupled to the output shaft that is configured to slidably receive a collet. The collet chuck includes at least one lever arm configured to apply a clamping force to the collet. A wedge is configured to move into and out of engagement with the at least one lever arm to generate the clamping force. A bearing is attached to the wedge, and a yoke member is attached to the bearing. The yoke member includes at least one lever structure that projects outwardly from the yoke member through the slot in the housing.

Abstract: A kit for mounting one or more appliances on a pole, the kit comprising a central ring for being mounted around a pole and having a through-hole, a fitting surface and a support surface, and a carrier having a base part and at least one support arm extending from said base part for supporting one or more appliances, wherein said base part is adapted to be fitted on said support surface and has a through-hole adapted for being fitted around said fitting surface.

Abstract: A telescoping support stand comprising a first tube partially defining a first enclosed area and a second tube partially defining a second enclosed area. A first end of the second tube may be telescopically slidable within the first tube. The telescoping support stand may also comprise a first locking mechanism attached to the second tube. The first locking mechanism may releasably secure the first tube to the second tube. The telescoping support stand may also comprise a first air exchange aperture dimensioned to allow air to flow between the first and second enclosed areas. The telescoping support stand may further comprise a release mechanism and a release rod attached to the first locking mechanism. The release mechanism may comprise a displacement member adjacent to the release rod, the displacement member being configured to displace the release rod and release the first locking mechanism.

Abstract: A positioning device includes a base, a press board, an antislip piece, and a positioning unit. The base includes an opening, and a mounting space. The mounting space is mounted on a rod. The press board is slidably mounted in the opening. The antislip piece is mounted on the press board and is close to the mounting space. The antislip piece is made of elastic material and is softer than the press board. The positioning unit includes a shaft mounted on the base and a driving member rotatably and eccentrically connected with the shaft. The driving member is driven between a pressing position for locking the rod and a releasing position for unlocking the rod. Thus, the user only needs to drive the driving member to lock or unlock the rod so that the rod is locked or unlocked easily and quickly.

Abstract: A telescoping support stand comprising an extendable leg that includes a first tube partially defining a first enclosed area and a second tube partially defining a second enclosed area. A first end of the second tube may be telescopically slidable within the first tube. The telescoping support stand may also comprise a locking mechanism attached to the second tube. The locking mechanism may releasably secure the first tube to the second tube to prevent longitudinal movement of the first tube relative to the second tube. The telescoping support stand may also comprise a first air exchange aperture dimensioned to allow air to flow between the first and second enclosed areas. The telescoping support stand may include a plurality of extendable legs and a single release member that operates all of the locking mechanisms of the plurality of extendable legs. Corresponding methods of assembly and operation are also disclosed.

Abstract: A method and apparatus for a seat post assembly that is adjustable to an upper, intermediate, and lower seat post position using a locking member and a sleeve member coupled to an actuator for securing and releasing an inner tube with respect to an outer tube. The actuator may move the sleeve member to release the locking member from engagement with the outer tube to adjust the inner tube and thus the seat post assembly to the upper, intermediate, or lower seat post positions. The actuator and the sleeve may be biased into an initial position that urges the locking member into engagement with outer tube to lock the inner tube to the outer tube.

Abstract: A telescoping support stand comprising a first tube partially defining a first enclosed area and a second tube partially defining a second enclosed area. A first end of the second tube may be telescopically slidable within the first tube. The telescoping support stand may also comprise a first locking mechanism attached to the second tube. The first locking mechanism may releasably secure the first tube to the second tube. The telescoping support stand may also comprise a first air exchange aperture dimensioned to allow air to flow between the first and second enclosed areas. The telescoping support stand may further comprise a release mechanism and a release rod attached to the first locking mechanism. The release mechanism may comprise a displacement member adjacent to the release rod, the displacement member being configured to displace the release rod and release the first locking mechanism.

Abstract: A seat tube of a bicycle has a tubular body and a tightening block. The tubular body has an insertion hole and a stationary block. The insertion hole is defined in the tubular body and has an inner surface and a tightening recess. The inner surface is formed in the tubular body. The tightening recess is defined in the inner surface. The stationary block is embedded in the tightening recess and has an oblique surface and a fastener hole. The fastener hole is defined in the oblique surface. The tightening block is mounted slidably on the oblique surface and has a tightening surface, a through hole and a fastener. The tightening surface is shaped to correspond to the inner surface. The through hole is defined through the tightening block. The fastener is mounted through the through hole and engages the fastener hole.

Abstract: A telescoping support stand comprising a first tube partially defining a first enclosed area and a second tube partially defining a second enclosed area. A first end of the second tube may be telescopically slidable within the first tube. The telescoping support stand may also comprise a first locking mechanism attached to the second tube. The first locking mechanism may releasably secure the first tube to the second tube. The telescoping support stand may also comprise a first air exchange aperture dimensioned to allow air to flow between the first and second enclosed areas. The telescoping support stand may further comprise a release mechanism and a release rod attached to the first locking mechanism. The release mechanism may comprise a displacement member adjacent to the release rod, the displacement member being configured to displace the release rod and release the first locking mechanism.

Abstract: A telescoping boom pole for an electrical conductor is disclosed. The boom pole includes at least a top cylindrical conduit slidably assembled within a second cylindrical conduit. A top clamping means is included for selectively clamping the top conduit to the second conduit. The top clamping means includes an annular cylindrical collar having a threaded portion proximate a bottom edge on an inside surface thereof, and a collet restraining means proximate a top edge thereof. An annular, compressible collet is resiliently captured by the collet restraining means of the collar at a cooperative restraining means of an outside surface of the collet. The collet further includes an inclined lower portion on an outside surface thereof. The top clamping means further includes an annular sleeve fixed to a top end of the second conduit, and has an outside surface that includes a threaded portion that cooperates with the threaded portion of the collar.

Abstract: A lifting device for a chair includes an upright support post, a tapered locking sleeve adjustably mounted on the support post, a tapered pressing sleeve mounted on the locking sleeve, a stepping ring having a mounting tube which is mounted on the pressing sleeve, and a dustproof cover abutting a top of the mounting tube of the stepping ring and secured on a top of the pressing sleeve. Thus, the pressing sleeve surrounds the locking sleeve to distribute the pressing force evenly, and the locking sleeve surrounds the support post to distribute the pressing force evenly so as to prevent the pressing sleeve and the locking sleeve from being worn out or broken due to a stress concentration and to enhance the lifetime of the lifting device.

Abstract: A telescoping support stand comprising a first tube partially defining a first enclosed area and a second tube partially defining a second enclosed area. A first end of the second tube may be telescopically slidable within the first tube. The telescoping support stand may also comprise a first locking mechanism attached to the second tube. The first locking mechanism may releasably secure the first tube to the second tube. The telescoping support stand may also comprise a first air exchange aperture dimensioned to allow air to flow between the first and second enclosed areas. The telescoping support stand may further comprise a release mechanism and a release rod attached to the first locking mechanism. The release mechanism may comprise a displacement member adjacent to the release rod, the displacement member being configured to displace the release rod and release the first locking mechanism.

Abstract: A telescoping support stand comprising a first tube partially defining a first enclosed area and a second tube partially defining a second enclosed area. A first end of the second tube may be telescopically slidable within the first tube. The telescoping support stand may also comprise a first locking mechanism attached to the second tube. The first locking mechanism may releasably secure the first tube to the second tube to prevent longitudinal movement of the first tube relative to the second tube. The telescoping support stand may also comprise a first air exchange aperture dimensioned to allow air to flow between the first and second enclosed areas. The telescoping support stand may further comprise a release mechanism and a release rod attached to the first locking mechanism. The release mechanism may comprise a displacement member adjacent to the release rod, the displacement member being configured to displace the release rod and release the first locking mechanism.

Abstract: An anchor mount formed of: a mounting device; a laterally expandable locking mechanism coupled to the base of the mounting device, the laterally expandable locking mechanism including first and second cooperating wedges, the first wedge being coupled to the base of the mounting device, and the second wedge being movable along an inclined plane of mutual contact with the first wedge and substantially laterally expandable relative thereto; a reaction surface fixed relative to the first wedge; an actuator having an actuation surface that is positioned adjacent to the reaction surface and movable relative thereto; and the second wedge being responsive to motion of the actuation surface of the actuator relative to the reaction surface for moving along the inclined plane of mutual contact with the first wedge and substantially laterally expanding relative thereto.

Abstract: A locking device for multiple-section telescoping tubes wherein a smaller tube is telescopically retractable into or extensible from within a larger tube includes a pair of opposing blocks, disposed within the telescoping tubes, one block being attached to the smaller tube, the other block being configured to move laterally with respect to the first block when the blocks are moved longitudinally with respect to each other. Depending on the direction of longitudinal movement of the blocks, one block may be caused to bear against an inner side of the larger tube to resist retraction of the smaller tube, or the blocks may be allowed to move away from the inner side of the larger tube to allow free sliding extension of the smaller tube. The device also includes means for selectively longitudinally moving one of the blocks with respect to the other, so as to allow free sliding retraction of the smaller tube, when desired.

Abstract: Apparatus and methods for transporter shaft coupling and decoupling to assure alignment of a user interface with a control shaft through matching asymmetric cylindrical surfaces and alignment of an upper shaft segment and a lower shaft segment with ribs meshing with grooves on rings attached to the upper shaft. A tone confirms proper connection. Alignment apparatus is protected from damage associated with torques applied to the control shaft by tab features designed to first give way before other damage is incurred and from moisture by apparatus that seals the connection between upper and lower shaft segments. The user is protected from sudden loss of control by requiring the user interface to execute a sequence of linear and rotational manipulations during assembly of the shaft.

Abstract: A telescoping support stand comprising a first tube partially defining a first enclosed area and a second tube partially defining a second enclosed area. A first end of the second tube may be telescopically slidable within the first tube. The telescoping support stand may also comprise a first locking mechanism attached to the second tube. The first locking mechanism may releasably secure the first tube to the second tube to prevent longitudinal movement of the first tube relative to the second tube. The telescoping support stand may also comprise a first air exchange aperture dimensioned to allow air to flow between the first and second enclosed areas. A corresponding method of assembly is also disclosed.

Abstract: A telescoping pole mount formed of an elongated male tube member that is slidable within an elongated female tube member. An internal locking mechanism for securing the telescoping pole at a selected elevation is provided as first and second cooperating wedges that are each structured to slide along a plane of mutual contact that is inclined relative to a longitudinal axis of the female tube member, the wedges are sized to slide within the female tube member with the first wedge being positioned within the female tube member exterior to a portion of the male tube member that is positioned within the female tube member. A lengthwise drive mechanism is coupled for driving the second wedge against the first wedge along the plane of contact and into an interlocked relationship therewith. A disengaging mechanism is provided for disengaging the wedges from their interlocked relationship.

Abstract: Bases are disclosed that comprise a projecting portion designed to receive over it the hollow end of a pole or other elongate member, which may form part of a structure such as a pavilion or umbrella. The projecting portion of the base comprises wedges that move in response to the end of the pole moving over the projecting portion and in so moving, the wedges increase the effective cross section of the projecting portion to engage the inner surface of the end of the pole and to thereby stabilize the structure on a support surface, such as the ground. Braces are also disclosed that pull together adjacent poles of a pavilion to make the structure more rigid.

Abstract: Disclosed is an apparatus for regulating a height of a music rack capable of improving convenience and operability of a use by allowing a strut length of the music rack to be regulated conveniently and easily while simplifying its structure to improve manufacturability and assemblability.

Abstract: A camming coupler for removably attaching a music desk or other object to an upright support leg. The camming coupler includes an inner sleeve for receiving the upright support leg. The inner sleeve has at least one longitudinal slit formed therein, and preferably has four substantially equidistant longitudinal slits. The inner sleeve also has a cammed exterior surface. An attachment member extends from the inner sleeve, and is attachable to the music desk or other object. The camming coupler further includes an outer sleeve positioned over the inner sleeve. The outer sleeve has a cammed interior surface that corresponds with the cammed exterior surface of the inner sleeve. In use, the camming coupler is secured to a music desk or other object. An upright support leg is inserted in the inner sleeve, and the outer sleeve is rotated to compress the inner sleeve.

Abstract: A quick-acting telescopic tube has a stationary tube, a detent lining, an extension tube, a lock activating assembly, a bottom plug, an activating rod, a spring and a ball. The detent lining is mounted securely in the stationary tube and has multiple detents. The extension tube is mounted movably in the detent lining and has a top and a bottom. The lock activating assembly is mounted around the top of the extension tube and has a lever extending into the extension tube. The bottom plug is mounted securely in the bottom of the extension tube and has a transverse through hole. The activating rod is mounted in the extension tube, connects to the lever and has a locking piston with an annular recess. The ball is mounted in the transverse through hole and selectively in either one of the detents or the annular recess.

Abstract: A locking device for a telescopic tube assembly having an outer tube and an inner tube slidably received in the outer tube includes a securing ring securable inside the inner tube, a friction element adapted to be securely mounted on one distal end of the inner tube and having legs deformably extending out and a wedge adapted to be selectively and movably received inside the outer tube to force the legs to extend toward an inner periphery of the outer tube so as to increase friction between the legs and the outer tube. Thus movement of the inner tube in the outer tube is selectively controlled.

Abstract: A method and apparatus for adjusting the relative position between a pair of elongate, tubular shafts using an adjustment mechanism having a wedge element operably moveable along a ramp by shifting of an actuator member. The adjustment mechanism is configured to reduce binding thereof by supporting the actuator member in more than one location to maintain desirable contact between the wedge element and the ramp and the inner wall of the one of the pair of shafts, providing for an increased range of movement of the wedge element along the ramp to prevent undesirable frictional engagement between the actuator member and the ramp, and by providing a stop to substantially maintain the wedge element from unintentionally withdrawing into the inner shaft and wedged therein.

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: The present invention relates to an improved tube rack with telescoping function, more especially a structure that can be adjusted according to a desired length or height. The structure includes an outer sleeve, a threaded sleeve, an inner link, a telescopic shaft link with a fitting spring and a retaining seat. Through the motion of the retaining seat and the telescopic shaft link fitted with the spring, the present invention can be adjusted more efficiently to the user's satisfactory degree.

Abstract: A mechanical stand for vertically supporting objects is disclosed which includes an upper base section comprised of a tubular structure, having a telescopically movable upper support member, which in the preferred embodiment of the invention could be used as a rack member or a shelf structure. The upper support member is comprised of a tubular member cooperatively profile with the tubular structure of the upper base section to be slidably received therein. The upper support member includes a pushbutton actuator which is operatively connected to a linkage member, which in turn is connected to a locking jaw, whereby actuation of the pushbutton member disengages the locking jaw from the inner surface of the upper base member, allowing various incremental telescopic locations of the upper support member.

Abstract: A locking device for multiple section telescope tubes that locks the telescoping tubes in any position of extension and releases the leg sections sequentially from the bottom up by depressing a push rod. The push rod releases a pin or ball that clamps the internal surface of an outer leg to the surface of an inner leg, thereby preventing an inner leg from sliding within the outer leg. The device can be used on any telescoping device. For example, the locking device may be used with tripods for cameras, painter's easels, telescopes, and other optical instruments, as a single multi-section stand for music, microphones, light stands, canes, walking sticks, flagpoles, umbrellas, handles, tent poles, or for devices such as radio antennae or pointing devices.

Abstract: A telescoping tube assembly of adjustable lengths comprising two or more elongated tubular members with a locking mechanism designed to retain the tubular members and desired relative relationship one to another. The locking mechanism includes a truncated conical expander head with a cylindrical body segment and a conical tip segment, with the expander head functioning cooperatively with a radially expanded frictional break member. A square head (or head of other non-circular configuration), is used to cause relative rotation between the conical expander head and the radially expanding brake member. Annular hinges are provided between the cap portion and the radially expanding friction shoes of the break member, with the integral annular hinges flexing in opposite directions to provide broader area of contact between the internal peripheral of the tubular member and the outer surfaces of the frictional break member.

Abstract: A release for a seat-back height adjuster, especially for office chairs, in which the height adjuster consists of a housing (1) in which a flat seat-back bearer (2) is held by a ball catch clamp (3, 4), where the seat-back bearer (2) has recesses or apertures (3) arranged one behind the other for locking balls (4) which are held in the recesses of apertures by means of spring-loaded clamping bevels (5'), and in which the clamping bevel (5') can be disengaged against the force of the spring by a caliper (8) guided laterally out of the housing (1), where there is a base plate (7) secured in the housing (1) which has a groove (16) fitted in the axis of the caliper (8) having a narrower cross section for the end of the caliper (8) at which the latter is inserted into the housing (1) and the base plate (7), and the groove (16) has a broader cross section in which a shuttle (5) provided with the clamping bevel (5') for the ball (4) and is wider than the narrower cross section of the groove (16), is slidingly guided

Abstract: A clamp (1) for adjustable-height seat-backs, consisting of a guide member (2) for a tubular component (3) of the seat-back and a clamping device for clamping said tubular component in the guide member, the clamping device consisting of a clamping member (10) fitted on an upper pivot to swivel on the tubular component (3) or a component beside and firmly secured to it, and an actuator (6), the actuator (6) being fitted beneath the pivot of the clamping member (10) so as to rotate behind it in relation to the tubular component (3), and the actuator (6) having at least two different diameters from its pivot.

Abstract: The invention concerns the height-adjustment of the back-rests of chairs, especially office chairs, consisting of a housing (1) in which a flat back-rest carrier (2) is held by a ball-stop clamp (3, 4), the back-rest carrier (2) being provided with a series of indentations or holes (3) arranged behind one another in an axial direction for the stop balls (4) which are held in the indentations or holes (3) by means of a spring-loaded clamping bevel (5'). The clamping bevel (5') can be brought out of contact by a push-button (8) guided sideways from outside the housing against the spring force, spring-loaded means (10, 11) being arranged in the housing (1) for the prevention of sideways play of the back-rest carrier (2).

Abstract: A stand for a monitor and a keyboard, which can be used to hold a computer monitor and keyboard so that a human operator may comfortably use the computer in a variety of positions, including sitting in a conventional chair and standing. The stand includes two shelves, each of which is attached to a post. The posts are then attached to a base. One shelf is designed to hold a monitor, while the other shelf is designed to hold a keyboard. The keyboard shelf itself is tiltable about its post, such that the angle between the keyboard shelf and its post is adjustable. Both the post attached to the keyboard shelf, and the post attached to the monitor shelf, are independently extensible, such that the length of each post, and hence the vertical position of each shelf, can be adjusted independently.

Abstract: A chair base connection assembly for connecting a pipestand to a chair base includes an outer sleeve having opposing flared ends, an inner sleeve having a tapered inner diameter for engaging the pipestand and an outer surface having a taper at an upper end for engaging an inner flared surface at the upper end of the outer sleeve and external threads at the lower end for engaging a tapered intermediate nut having an outer flared surface which engages an inner flared surface on the lower end of the outer sleeve. The chair base connection assembly of this invention provides a stable, strong, wobble-free connection between the base and the pipestand, while allowing greater dimensional variability of the components comprising the chair base connection assembly, thereby reducing the manufacturing costs.

Abstract: Two portions of an extendible rod-like element are joined together in an adjustable manner by means of a device with a external screw thread and an internal screw thread comprising an internally threaded sector movable on one of the portions of the rod-like element from an operative position of engagement with the external screw thread, in which the portions are locked as regards relative sliding, to an inoperative position of disengagement from the external screw thread, in which the portions can slide freely relative to one another. In the operative position, the internally threaded sector can be rotated for a precise adjustment of the extension of the rod-like element whereas, in the inoperative position, it is possible to carry out an approximate and quick adjustment.

Abstract: A device for adjusting the length of a support composed of an outer tube and an inner tube slidably inserted in the outer tube, includes an opening extending radially through the outer tube, a spacer radially movably received in the opening and confronted with an outer surface of the inner tube, a housing mounted on the outer tube in confronting relation to the opening, and a wedge slidably inserted in the housing to force the spacer radially inwardly against the inner tube. With this construction, the inner tube and the outer tube can be firmly fastened together with a great tightening force without damaging the inner tube. A stopper pivoted on the wedge and normally urged upward by a spring is able to preclude an unintended omission of driving the wedge or an incompletely driven or tightened condition of the wedge.

Abstract: A device and method for securing at least one, and normally a plurality of supply stands in one localized area of a patient table. The device generally comprises a mounting means for removably attaching the device to the patient table and a clamping means for removably clamping the post of the supply stand to the device. The clamping means comprises a restraining member having at least one opening and a shiftable cylinder proximate to the opening in the restraining member for receiving and rigidly maintaining the post of the supply stand perpendicularly to the patient table.

Abstract: The foot described has a support arm connected to the leg, the other end of the support arm being fitted with a height-adjustable foot element (8). For this purpose, the foot element has an upper surface (12) which extends, at an angle (.alpha.) to the floor surface (10), towards the support arm (6) and which engages with a matching lower surface (14) on the support arm (6). Both surfaces (12, 14) have engagement ribs (16, 18) which run at right angles to the support arm (6). The foot (8) is connected by means of a stud (22) to a support element (32) which rests with the spring head pressed against the upper surface (38) of the support arm (6). The stud (22) passes through a long hole (30) facing the support arm (6). This design ensures that the height of the foot can be adjusted simply and reliably.