Table with extendable legs
First Claim
1. A table with extendable legs comprising:
- at least one base;
at least one leg including a first end mounted in a corresponding one of the at least one base to stand upright and a second end, the leg comprising;
a hollow external rod having a closed end mounted in the base and an open end opposite to the base;
a sleeve centrally inserted into and secured in the hollow external rod, the sleeve including an internal thread formed in a free end of the sleeve, the internal thread having a diameter smaller than the internal diameter of the sleeve;
a hollow internal rod movably received in the hollow external rod;
a connector attached to one end of the hollow internal rod opposite to the base;
a threaded spindle having a first end screwed into the sleeve via the internal thread in the sleeve and a second end rotatably mounted in the connector and extending through the connector; and
a first gear securely attached to the second end of the threaded spindle;
a frame including at least one rod mounted on a corresponding one of the connectors;
a handle including one and extending into one of the at least one rod and having a second gear securely mounted on an extension formed on the handle to engage with the first gear to drive the threaded spindle; and
a tabletop mounted on the frame.
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Accused Products
Abstract
A table with extendable legs includes at least one base and extendable leg having one end secured in the base so the leg can stand upright. A tabletop is mounted horizontally on the other end of the leg. The leg includes an external rod and a sleeve centrally inserted into and secured in the hollow external rod. The sleeve includes an inner thread formed in a free end of the sleeve. A hollow internal rod is movably received in the hollow external rod. A threaded spindle is screwed into inner thread and a first gear is securely attached to the free end of the threaded spindle. A Z-shaped handle includes one end having a second gear securely mounted to engage to the first gear to drive the threaded spindle to control the length of the extendable leg to control the height of the table.
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Citations
18 Claims
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1. A table with extendable legs comprising:
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at least one base;
at least one leg including a first end mounted in a corresponding one of the at least one base to stand upright and a second end, the leg comprising;
a hollow external rod having a closed end mounted in the base and an open end opposite to the base;
a sleeve centrally inserted into and secured in the hollow external rod, the sleeve including an internal thread formed in a free end of the sleeve, the internal thread having a diameter smaller than the internal diameter of the sleeve;
a hollow internal rod movably received in the hollow external rod;
a connector attached to one end of the hollow internal rod opposite to the base;
a threaded spindle having a first end screwed into the sleeve via the internal thread in the sleeve and a second end rotatably mounted in the connector and extending through the connector; and
a first gear securely attached to the second end of the threaded spindle;
a frame including at least one rod mounted on a corresponding one of the connectors;
a handle including one and extending into one of the at least one rod and having a second gear securely mounted on an extension formed on the handle to engage with the first gear to drive the threaded spindle; and
a tabletop mounted on the frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A table with extendable legs comprising:
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two bases;
a horizontal stabilizer having two opposite ends respectively secured in a corresponding one of the two bases;
two legs each including a first end mounted in a corresponding one of the base to stand upright, each of the legs comprising;
a hollow external rod having a closed end mounted in the base and an open end opposite to the base;
a sleeve centrally inserted into and secured in the hollow external rod, the sleeve including an internal thread formed in a free end of the sleeve, the internal thread having a diameter smaller than the internal diameter of the sleeve;
a hollow internal rod movably received in the hollow external rod;
a connector attached to one end of the hollow internal rod opposite to the base;
a threaded spindle having a first end screwed into the sleeve via the internal thread in the sleeve and a second end rotatably mounted in the connector and extending through the connector; and
a first gear securely attached to the second end of the threaded spindle;
two rods each having an invaded U-shaped cross section respectively mounted on a corresponding one of the connectors;
a tube axially aligned with the first gears and mounted between the two rods with inverted U-shaped cross section, the tube connecting the internal surfaces of the two rods with inverted U-shaped cross section; and
a shaft ratably received in the tube, the shaft including two ends each having a second gear engaged to and driving the first gears of the legs; and
a Z-shaped handle having one end extending into one of the rods with inverted U-shaped cross section and secured on and driving a corresponding one of the second gears. - View Dependent Claims (18)
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Specification