Arrangement for raising and lowering a vertically suspended unit

Details Arrangement for raising and lowering a vertically suspended unit Arrangement for raising and lowering a vertically suspended unit

1993-01-08

1995-01-10

Ramirez, Ramon O.

Supports

Brackets

Adjustable

248324, 248327, E04G 300

Patent

active

053799771

ABSTRACT:
The invention relates to an arrangement for vertically raising and lowering a unit, e.g. a plate, a monitor or the like, suspended from a support, comprising a retractable member consisting of at least three interconnected lazy tongs linkages, an upper attachment connected to the upper part of said retractablela member and to the support, a lower attachment connected to the lower part of said retractable member and to the unit, connectors pivotally secured at joints between two interconnected lazy tongs linkages, thereby interconnecting at least three lazy tongs linkages to form said retractable member, and means for assumin the lateral movements occuring when the unit is retracted or extended, said means being provided at each end of said retractable member and in said lower and upper attachements, respectively, and consisting of bore members having bores formed therein, and beam like members received in said bore members, whereby said movements assuming means extend towards the centre of said lower and upper attachments, respectively.

REFERENCES:
patent: 241416 (1881-05-01), Porter
patent: 736609 (1903-08-01), Langdon
patent: 2933198 (1960-04-01), Firestone et al.
patent: 3034765 (1962-05-01), Ludowici
patent: 3672104 (1972-06-01), Luckey
patent: 3795289 (1974-03-01), Laforest
patent: 3950050 (1986-04-01), Kinder
patent: 5261645 (1993-11-01), Huffman

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