Elevation adjustment device in the legs of table

Horizontally supported planar surfaces – Vertically adjustable – By telescoping

Reexamination Certificate

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Details

C108S147110

Reexamination Certificate

active

10997851

ABSTRACT:
An elevation adjustment device in the legs of table includes a rectangular leaf and four legs connected to the underside of four corners of the leaf. The legs each has a first tube and second tube slidably inserted into the first tube having graduation on outer periphery, a tubular sleeve engaged with the lower end of the first tube, a tubular stopper with a circular pad pressed into the lower end of the second tube, a pushing rod connected to a threaded shank inserted into a circular through hole of the first tube and a protrudent radial through hole in a segmental retaining bar, an enlarged retaining ring, a washer and a spring sequentially wrapped on the threaded shank and secured by a internally threaded cap from the inner end of the shank.

REFERENCES:
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patent: 2748261 (1956-05-01), Wolar
patent: 2872252 (1959-02-01), Konkle
patent: 3855946 (1974-12-01), Bales
patent: 4113221 (1978-09-01), Wehner
patent: 5107775 (1992-04-01), Langlais et al.
patent: 6209840 (2001-04-01), Chen
patent: 6354231 (2002-03-01), Morris
patent: 6467747 (2002-10-01), Ellsworth
patent: 6920834 (2005-07-01), Pehta et al.
patent: 6923410 (2005-08-01), Chang

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