Danner Robert W. (4225 Connie Dr. Sterling Heights MI 48310)
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초록▼
A foldable keyboard stand is formed of a pair of elongated leg tubes that are pivotally connected together to form an X-shape which is arranged in an upright position. Horizontally arranged, parallel tubes are secured to the upper and lower ends of the leg tubes to form upper support and lower foot
A foldable keyboard stand is formed of a pair of elongated leg tubes that are pivotally connected together to form an X-shape which is arranged in an upright position. Horizontally arranged, parallel tubes are secured to the upper and lower ends of the leg tubes to form upper support and lower foot tubes. The support and foot tubes are arranged off-center relative to the axis of the leg tubes so that they extend forwardly, towards a user location, a considerably greater distance than they extend rearwardly. A resilient, foam plastic sleeve is placed upon and substantially covers each of the upper, support tubes opposite extension portions. A resilient, ring-like collar, which is higher than the support upper surfaces, are positioned upon the opposite ends of the support tubes so that a generally flat keyboard may be rested upon the sleeve covered support tubes and laterally restrained between the end collars. An adjustable length brace interconnects the leg tubes so that the angularity of the leg tubes can be adjusted by selectively adjusting the length of the brace for raising and lowering the support tubes in order to locate the keyboard in pre-selected user standing and sitting positions.
대표청구항▼
A foldable keyboard stand for supporting a keyboard at different heights for use in sitting and standing positions, comprising: a pair of elongated, leg tubes pivotally connected together at their middles and normally arranged in an upright position in an X-shape located in a roughly vertical plane
A foldable keyboard stand for supporting a keyboard at different heights for use in sitting and standing positions, comprising: a pair of elongated, leg tubes pivotally connected together at their middles and normally arranged in an upright position in an X-shape located in a roughly vertical plane for providing a forward user position side and a rear side on the opposite sides of the plane; a horizontally arranged, elongated, upper, keyboard support tube secured to the upper ends of each leg tube, and a horizontally arranged, elongated, lower, foot tube secured to the lower ends of each foot tube; the support tubes and the foot tubes all being substantially straight and parallel to each other and generally perpendicular to said plane with the opposite ends of the leg tubes being secured to the support tubes and the foot tubes by forming substantially flat end portions on the opposite ends of the leg tubes and providing correspondingly sized slots in the support tubes and the foot tubes for receiving said flat end portions, and fastening the flat end portions within the slots; and the centers of the respective support tubes and foot tubes being laterally offset relative to the locations at which they are secured to the leg tubes so that the portions of the support tubes and leg tubes that extend forwardly, that is, towards said user position side, are roughly about twice the length of the portions that extend rearwardly; a generally horizontally arranged, manually adjustable length brace interconnecting the legs at a point located at a distance from their pivot point about midway between said pivot point and the upper ends of each foot tube, said brace being formed of two, horizontally aligned, narrow, flat strips each having one of its pins pivotally connected to a leg tube and its opposite, free end extending toward and being overlapped by the corresponding free end of the other strip and one of said strips having a pin formed on its free end and the other of said strips having aligned, pin-receiving openings formed along its length for selectively receiving the pin in one of such openings for thereby adjusting the length of the brace by inserting and removing the pin from one opening to a preselected opening so that the angularity of the legs can be adjusted for raising or lowering the height of the support tubes whereby they may support a keyboard at a predetermined higher location for use in a standing position or at a predetermined lower location for use in a sitting position; and a resilient, relatively rough surfaced sleeve, made of a resilient, foam plastic material for resiliently compressing under the pressure of the keyboard and having a relatively high frictional surfaces for frictionally holding the keyboard against movement, and having a support tube receiving bore, positioned upon each of the forward and rear portions of the support tube for substantially covering the lengths thereof; and a resilient, foam plastic material, short length collar having a central support tube receiving bore, positioned upon the opposite end portions of the support tubes in endwise, axial alignment with their respective adjacent sleeves, with the collars being substantially higher than the upper surfaces of the sleeves, so that a keyboard may be rested upon the sleeves and held between the collars to restrain the keyboard against undesired movement relative to the support tubes.
Donald H. Eason ; Jonathan P. Workman ; Kenneth W. House ; Douglas A. Kempel ; Robin R. Slaton ; Tillman F. Taylor, High strength engineered collapsible tripod.
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