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Height-adjustable work surface affixed to a vertically extending surfaceRelated Patent Categories: Supports, Stand And Bracket, Having Adjustable Bracket, Vertically, Bracket Moved By Mechanical Operator (e.g., Spring, Threaded Shaft, Pulley And Rope)Height-adjustable work surface affixed to a vertically extending surface description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070034754, Height-adjustable work surface affixed to a vertically extending surface. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates generally to any type of height adjustable work station. More specifically, the present invention teaches a height-adjustable work surface affixed to any weight supporting and vertically extending surface. [0003] 2. Description of the Prior Art [0004] The prior art is well documented with various types of work-supported platforms or work stations, these typically being of the variety to permit vertical adjustment. European Patent Application No. 0 368 186 teaches a vertically adjustable and retrofittable work station mounted to a wall panel and including a first pair of vertically oriented, spaced rails having engaging teeth protruding therefrom so as to be stationarily mounted on an existing wall panel of a conventional work station. A second pair of vertically oriented rails are individually, slidably and interlockingly disposed in the first pair of rails. [0005] A pair of support brackets having engagement teeth protrude therefrom so as to be individually mounted on the second pair of rails. A work surface is supported by the support brackets and a pair of interconnecting channels interconnect the first and second pairs of rails. A drive mechanism is coupled between the interconnecting channels to move the channels toward or away from each other and to attendantly displace the work surface. I would ask that you review this reference in detail, however my analysis indicates some differences, albeit simplified, by which the proposed design operates. [0006] Kurrasch, U.S. Pat. No. 4,619,208, teaches a work surface height adjustment mechanism including left and right side cable lift mechanisms coupled to a central drive mechanism through cables. Each cable lift mechanism includes a hanger clip engaging wall panel slots. A mounting plate is removably suspended from the hanger clip and a vertically movable extrusion guided along the plate and having pulleys engaging one of the cables to support the work surface. In one operating variant, a motor driven screw and a forward slide block is positioned within an elongated channel and mounting a slidable yolk securing ends of the cables. [0007] International Publication No. WO 2004/097269 teaches a compact height adjustable work station utilizing a combination of support arms and linkages to achieve greater strength and a greater range of tabletop height adjustment from a smaller form factor. The method for adjusting work surface height is user operated and pressure assisted, whereby the user requires a minimal effort to physically lift or lower the work surface to the desired tabletop height. The pressure assist can be variably located to counterbalance different tabletop weights. For automatic counterbalancing, an elongated extensible gas spring piston-cylinder is adapted to be locked in any of its continuous range of infinite adjusted positions. Manual unclamping frees the counterbalancing gas spring for manual height level adjustment of the tabletop. A mid-range level or a high tabletop level may be achieved, adjusted by unclamping and minimum manual force. [0008] Finally, U.S. Pat. No. 6,286,441, issued to Burdi, teaches a height adjustable work surface and control including a motorized and height adjustable table having a support base, a top assembly including a substantially horizontally disposed work surface, and first and second powered drive assemblies for raising and lowering the work surface. The first and second drive assemblies have first and second electric motors and drivingly engage the top assembly for effecting vertical movement of the top assembly to adjust the height of the work surface. A controller is coupled to the first and second drive assemblies for simultaneously controlling the first and second electric motors. The controller senses a relative height displacement between the first and second drive assemblies and de-energizes the motor controlling the leading drive assembly until the relative difference in height between the first and second drive assemblies is substantially zero. SUMMARY OF THE PRESENT INVENTION [0009] The present invention discloses an assembly for actuating a work surface in height adjustable fashion relative to a vertically extending and load bearing surface, such as including wall, desk front, column, die wall, and the like. The present invention provides a powered and height adjustable work station suitable for a wide range of uses, these including without limitation such as patient intake/insurance work surfaces, student study carrels, library study carrels, A.D.A. stations in a run of classroom casework (as well as related teacher's desks, computer workstations and information kiosks), charting work surfaces in clinics, treatment and examination rooms, bank teller windows, service counter, testing booths, and the like. [0010] The assembly includes a drive motor, typically electrically operated and including a linearly translatable drive screw, having an overall elongated configuration and including a first end fixed to a location along the load bearing surface. A second extending and linearly translatable end of the drive motor securing to an underside of the work support surface at a center point thereof. [0011] A pair of support channels, each exhibiting a substantially square shape in cross section and with an open interior accessible through an open extending edge defined within a face thereof, are arranged at equidistant and opposite extending sides relative to the drive motor. Each of the support channels secured in substantially parallel spaced and extending fashion along the load bearing surface relative to a direction of the linear translation of the motor. [0012] A pair of support brackets are provided and each include a first upper edge securing to an underside location of the work support surface. A second side edge of each of the support brackets are secured in freely slidable fashion through an open extending edge defined within a face of each of the support channels. A switch is secured to a location of the work support surface and is actuated to operate the drive motor to raise and lower the work support surface. [0013] Additional features include the provision of a guide block slidably disposed within each of the open interior support channels, associated side edges of each of first and second support brackets securing respectively to surfaces of the guide blocks exposed by the open extending extending edges. Preferably, a substantially frictionless contact is established between each of the guide blocks and an open interior defining said surrounding support channels to facilitate ease of vertically adjustable support of the work support surface responsive to the linear action of the drive motor in either of up and down directions. BRIEF DESCRIPTION OF THE DRAWING Reference will now be made to the attached drawings, when read in combination with the following detailed description, wherein like reference numerals refer to like parts throughout the several views, and in which: [0014] FIG. 1 is an environmental view, in perspective, of the height adjustable work support surface according to a preferred embodiment of the present invention; [0015] FIG. 2 is an exploded sectional view of a vertical surface mounted channel, guide block and support bracket subassembly associated with the height adjustable work surface; [0016] FIG. 3 is a rotated plan view of the work surface illustrated in FIG. 1; [0017] FIG. 4 is a cutaway view taken along line 4-4 of FIG. 3 and illustrating the height adjustable relationship established between the UHMW guide block, freely and slidably traversable within the vertically extending and open-faced channel, and according to the present invention; and [0018] FIG. 5 is a side view illustrating a range of height adjustment of the work surface according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0019] Referring now to FIG. 1, an assembly is generally illustrated at 10 for actuating a substantially planar shaped work support 12 in height adjustable fashion relative to a vertically extending and load bearing surface 14. As previously described, the present invention makes possible a wide variety of applications for securing a powered and height adjustable work surface to any suitable and load bearing vertical surface, such as a vertically extending wall, desk front, column, die wall, cubicle separator, or the like. Continue reading about Height-adjustable work surface affixed to a vertically extending surface... 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