Flush-mounted crank
AssigneeLeggett & Platt, Incorporated
InventorPhilip E. Crossman
Life of this patent
Estimating the term…
Abstract
The invention is a crank which is flush-mounted into a work surface and provides for raising or lowering a vertically adjustable work surface. The crank can be raised from its stored position to a fixed position above the work surface and unfolded providing for rotating the crank to raise or lower the work surface by causing an adjustment screw to thread in or out of an adjustment nut. The crank is returned to its stored position or flush-mounted by folding the crank and pressing downward.
Claims12
A flush-mounted crank assembly comprising:
- a crank;
- a hub;
- a pivot mounting for pivotably mounting the crank to the hub for rotation about a horizontal axis between a stored position overlying the hub and an operative position along side the hub;
- a fitting for connecting the hub to a shaft for rotation of the shaft about a longitudinal axis;
- a trim housing having at least two resilient legs for releasably supporting the hub in a raised position for rotation of the crank about the vertical axis in the operative position;
- the trim housing being shaped to receive the crank so that the crank can be recess mounted in the trim housing;
- the hub slidably mounted in the trim housing for vertical movement of the hub with respect to the housing so that the crank can be raised out of the trim housing;
- and the hub being further mounted in the trim housing for rotation with respect to the trim housing about the vertical axis;
- whereby the crank when raised out of the trim housing can be rotated first about the horizontal axis and then rotated about the vertical axis to rotate the hub about the vertical axis.
A height adjustable work surface assembly comprising a base, a work surface panel and a height adjustment mechanism for mounting the work surface to the base for vertical adjustment, and a flush-mounted crank assembly comprising:
- a crank;
- a hub;
- a pivot mounting for pivotably mounting the crank to the hub for rotation about a horizontal axis between a stored position overlying the hub and an operative position along side the hub;
- a fitting for connecting the hub to a shaft for rotation of the shaft about a longitudinal axis;
- a trim housing which is flush-mounted in the work surface panel;
- the trim housing being shaped to receive the crank so that the crank can be recess mounted in the trim housing;
- the hub slidably mounted in the trim housing for vertical movement of the hub with respect to the housing so that the crank can be raised out of the trim housing;
- and
- the hub being further mounted in the trim housing for rotation with respect to the trim housing about a vertical axis;
- whereby the crank when raised out of the trim housing can be rotated first about the horizontal axis and then rotated about the vertical axis to rotate the hub about the vertical axis.
A height adjustable work surface assembly comprising a base, a work surface panel and a height adjusted mechanism for mounting the work surface to the base for vertical adjustment, and flush-mounted crank assembly comprising:
- a crank;
- a hub;
- a pivot mounting for pivotably mounting the crank to the hub for rotation about a horizontal axis between a stored position overlying the hub and an operative position along side the hub;
- a fitting for connecting the hub to a shaft for rotation of the shaft about a longitudinal axis;
- a trim housing, which is flush-mounted in the work surface panel;
- the trim housing being shaped to receive the crank so that the crank can be recess mounted in the trim housing;
- the hub slidably mounted in the trim housing for vertical movement of the hub with respect to the housing so that the crank can be raised out of the trim housing;
- and
- the hub being further mounted in the trim housing for rotation with respect to the trim housing about the vertical axis;
- whereby the crank when raised out of the trim housing can be rotated first about the horizontal axis and then rotated about the vertical axis to rotate the hub about the vertical axis.
Dependencies are inferred from the claim text.