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US 3,989,211 AGranted
Column drawing table
AssigneeFranz Kuhlmann KG
InventorArnold Gundlach
Life of this patent
Estimating the term…
Abstract
A vertically adjustable pedestal drawing table with a weight balance provided by a gas spring coupled between the pedestal column and the pedestal foot. Adjustable rollers maintain the true vertical orientation of the column. A pedal operated locking brake fixes the vertical position of the column and a safety locking brake arrests sudden undesired dropping of the column and table.
Claims8
A vertically adjustable pedestal drawing table comprising:
- a pedestal;
- a pedestal column;
- a pedestal foot secured to said pedestal, said pedestal column being vertically movable with respect to said pedestal foot and said pedestal;
- roller means secured to the walls of said pedestal for guiding said pedestal column in vertical movement;
- interior lugs vertically arranged on the inside walls of said column;
- a gas spring, one end of which is supported by said pedestal, said gas spring effectively providing weight balance for said drawing table and generally comprising a piston and a cylinder;
- a releasable transverse bracket mounted to said pedestal column, the other end of said gas spring being positioned and supported by said releasable bracket;
- frame means at least partially surrounding said pedestal column and being pivotally connected to said pedestal to releasably hold said pedestal column at any desired position with respect to said pedestal;
- and
- a drop brake comprising:
- a flap pivotably mounted with respect to said pedestal column;
- and
- clamping means coupled to said flap for engaging surfaces which remain stationary with respect to said pedestal to arrest sudden downward movement of said pedestal column with respect to said pedestal and said pedestal foot.
10 more elements
Dependencies are inferred from the claim text.