Height adjustable table
First Claim
1. A height-adjustable support assembly comprising:
- a base portion;
a base support surface; and
adjustable subassembly interconnecting said base portion with said support surface, said adjustable subassembly comprising;
a first member interconnected with said base portion;
a second member interconnected with said support surface, said second member being extendable relative to said first member between a retracted position and an extended position;
a third member slidably engaged with and floatably extendable relative to said first member, said third member being slidably engaged with said second member;
a means, interconnected with said second member and threadably interconnected with said base portion, for moving said second member relative to said first member, said means for moving comprising a single threaded rod and a means for rotating said single threaded rod, wherein said means for rotating said single threaded rod comprises a power drive unit;
means, associated with said second and third members, for preventing further extensive movement of said second member relative to said third member when said second member has extended to a first position relative to said third member, said third member being floatably extendable relative to said first member as said single threaded rod extends said second member relative to said first member to said extended position; and
a telescoping shell surrounding said first, second, and third members, wherein said power drive unit is positioned within said telescoping shell.
1 Assignment
0 Petitions
Accused Products
Abstract
A height-adjustable support assembly having the ability to vary the height of the support surface generally includes a base portion, a support surface, a first member interconnected with and extending upwardly from the base portion, and a second member interconnected with the support surface and movably engaged with the first member. The second member is movable from a first position, to position the support surface at a first height from the base portion, and an extended position, to position the support surface at a second height from the bottom surface. A support structure interconnected with the bottom surface, is provided for supporting the second member at an upper portion thereof when the second member is in the extended position, the upper portion being above an upper end of the first member.
77 Citations
34 Claims
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1. A height-adjustable support assembly comprising:
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a base portion; a base support surface; and adjustable subassembly interconnecting said base portion with said support surface, said adjustable subassembly comprising; a first member interconnected with said base portion; a second member interconnected with said support surface, said second member being extendable relative to said first member between a retracted position and an extended position; a third member slidably engaged with and floatably extendable relative to said first member, said third member being slidably engaged with said second member; a means, interconnected with said second member and threadably interconnected with said base portion, for moving said second member relative to said first member, said means for moving comprising a single threaded rod and a means for rotating said single threaded rod, wherein said means for rotating said single threaded rod comprises a power drive unit; means, associated with said second and third members, for preventing further extensive movement of said second member relative to said third member when said second member has extended to a first position relative to said third member, said third member being floatably extendable relative to said first member as said single threaded rod extends said second member relative to said first member to said extended position; and a telescoping shell surrounding said first, second, and third members, wherein said power drive unit is positioned within said telescoping shell. - View Dependent Claims (2, 3, 4)
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5. A height-adjustable support assembly comprising:
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a base portion; a base support surface; a mechanical drive link positioned within a recess in said support surface; and two adjustable subassemblies interconnecting said base potion with said support surface, each of said adjustable subassemblies comprising; a first member interconnected with said base portion; a second member interconnected with said support surface, said second member being extendable relative to said first member between a retracted position and an extended position; a third member slidably engaged with and floatably extendable relative to said first member, said third member being slidably engaged with said second member; a means, interconnected with said second member and threadably interconnected with said base portion, for moving said second member relative to said first member, said means for moving comprising a single threaded rod, wherein said threaded rods of said two subassemblies are interconnected via said mechanical drive link positioned within said recess in said support surface; and means, associated with said second and third members, for preventing further extensive movement of said third member relative to said second member when said third member has extended to a first position relative to said second member, said third member being floatably extendable relative to said first member as said single threaded rod extends said second member relative to said first member to said extended position. - View Dependent Claims (6, 7)
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8. A height-adjustable support assembly comprising:
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a base portion; a support surface; and an adjustable subassembly interconnecting said base portion with said support surface, said adjustable subassembly comprising; a first member interconnected with said base portion; a second member interconnected with said support surface and slidably engaged with said first member, said second member being movable relative to said first member between a retracted position and an extended position; a third member slidably engaged with said second member and floatably extendable relative to a fourth member, said fourth member interconnected with said base portion, said fourth member being slidably engaged with said third member; a means, interconnected with said second member and threadably interconnected with said base portion, for moving said second member relative to said first member, said means for moving comprising a single threaded rod; means for preventing further extensive movement of said second member relative to said third member when said second member has extended to a first position relative to said third member, said third member being floatably extendable relative to said fourth member as said single threaded rod extends said second member relative to said first member to said extended position, to thereby provide support to said second member when said second member is in said extended position; and means for limiting movement of said second member relative to said first member, said means for limiting movement comprising a first engaging member secured to one of said first and second members and a second engaging member secured to the other of said first and second members, whereby said first engaging member will contact said second engaging member when said second member has extended to said extended position to thereby prevent further extensive relative movement between said first and second members. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A height-adjustable table comprising:
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a base portion; a table top; and an adjustable subassembly interconnecting said base portion with said table top, said adjustable subassembly comprising; a first tube interconnected with and extending upwardly from said base portion; a second tube interconnected with said table top and slidably positioned within said first tube, said second tube being extendable relative to said first tube between a retracted position and an extended position, said second tube including an inner engaging member; a third tube slidably positioned within said second tube and floatably extendable relative to a fourth tube, said third tube including an outer engaging member, said fourth tube interconnected with and extending upwardly from said base portion, said third tube being slidable relative to said fourth tube; and a single threaded rod interconnected with said second tube for moving said second tube relative to said first tube whereby movement of said second tube by said single threaded rod from said retracted position to said extended position results in engagement of said inner engaging member of said second tube with said outer engaging member of said third tube to thereby cause said third tube to floatably extend relative to said first tube and support said second tube from an interior thereof.
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33. A height-adjustable support assembly comprising:
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a base portion; a base support surface; and adjustable subassembly interconnecting said base portion with said support surface, said adjustable subassembly comprising; a first member interconnected with said base portion; a second member interconnected with said support surface, said second member being extendable relative to said first member between a retracted position and an extended position; a third member slidably engaged with and floatably extendable relative to said first member, said third member being slidably engaged with said second member; a means interconnected with said second member and threadably interconnected with said base portion, for moving said second member relative to said first member, said means for moving comprising a single threaded rod; and means, associated with said second and third members, for preventing further extensive movement of said second member relative to said third member when said second member has extended to a first position relative to said third member, said third member being floatably extendable relative to said first member as said single threaded rod extends said second member relative to said first member to said extended position, wherein said extended position of said second member corresponds with a maximum height of said support surface.
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34. A height-adjustable support assembly comprising:
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a base portion; a base support surface; and an adjustable subassembly interconnecting said base portion with said support surface, said adjustable subassembly comprising; a first member interconnected with said base portion; a second member interconnected with said support surface and slidably engaged with said first member, said second member being movable relative to said first member between a retracted position and an extended position; a third member slidably engaged with said second member and floatably extendable relative to a fourth member, said fourth member interconnected with said base portion, said fourth member being slidably engaged with said third member; a means, interconnected with said second member and threadably interconnected with said base portion, for moving said second member relative to said first member, said means for moving comprising a single threaded rod; and means for preventing further extensive movement of said second member relative to said third member when said second member has extended to a first position relative to said third member, said third member being floatably extendable relative to said fourth member as said single threaded rod extends said second member relative to said first member to said extended position, to thereby provide support to said second member when said second member is in said extended position, wherein said extended position of said second member corresponds with a maximum height of said support surface.
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Specification