Support device for an item of retractable street furniture havin

Details Support device for an item of retractable street furniture havin Support device for an item of retractable street furniture havin

1994-06-03

1995-11-28

Terrell, William E.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

With floor pit opening for support and safety cover therefor

187251, 187255, 187270, 187289, B66F 702

Patent

active

054699363

ABSTRACT:
A support device for an item of retractable street furniture having electrical actuation is provided having a stationary box installed in the ground; moving equipment housed in the box and including a top support plate for supporting the item of street furniture, the equipment being movable between a high position in which the item of street furniture emerges from the box above the level of the ground, and a low position in which the item of street furniture is retracted into the box so that the top portion thereof does not project above ground level; an electrical motor and gear box unit; and a transmission for converting the rotary motion of the motor and gear box unit into translation motion of the moving equipment between its high position and its low position. According to the invention, the motor and gear box unit and the transmission form a reversible assembly so that in the absence of power being fed to the motor and in the absence of braking or locking being applied from outside the assembly, the moving equipment moves back on its own to its low position under gravity.

REFERENCES:
patent: 153765 (1874-08-01), Greenbaum et al.
patent: 1884447 (1932-10-01), White
patent: 2528056 (1950-10-01), Henry
patent: 3086430 (1963-04-01), Emmel
patent: 3800973 (1974-04-01), Weaver
patent: 4269285 (1981-05-01), Ohkoshi et al.
patent: 4919563 (1990-04-01), Stice

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