Horizontally supported planar surfaces – Vertically adjustable – Holding means cooperates with smooth face
Patent
1982-07-20
1985-01-08
McCall, James T.
Horizontally supported planar surfaces
Vertically adjustable
Holding means cooperates with smooth face
108146, A47B 900
Patent
active
044921705
ABSTRACT:
A vertically adjustable table includes a base having an upright rectangular tube, a square post slidably received within the tube, and a table top supported at the upper end of the post. The post slidably engages one of the narrow walls of the tube and a horizontal slot is provided near the top of the opposite narrow wall thereof. An integral locking member made from a bent metal plate is generally U-shaped, has a bight located near the upper end of the second wall of the tube and has two legs which diverge downwardly. One leg extends into a space between the tube and post, has a semicylindrical inward bend near the lower end thereof which is of a diameter slightly greater than the space between the post and tube, and has an elongate tab at the outer end thereof which is loosely received in the slot in the tube. Limited pivotal movement of the locking member is possible about a horizontal axis defined by the cooperating tab and slot, a cam surface in the region of the semicylindrical bend being thereby moved into and out of engagement with the post. A spring urges the locking member to pivot in a direction moving the cam surface into engagement with the post.
REFERENCES:
patent: 131299 (1872-09-01), Polley
patent: 153014 (1874-07-01), Ramsever
patent: 1639870 (1927-08-01), Valsvig
patent: 2294967 (1942-09-01), Eberhardt
patent: 2685487 (1954-08-01), Woller
Am Fab, Inc.
McCall James T.
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