Supports – Brackets – Adjustable
Patent
1987-11-24
1989-07-25
Foss, J. Franklin
Supports
Brackets
Adjustable
2481231, E04G 300
Patent
active
048505587
ABSTRACT:
A device for a vertically displaceable installation support comprising a profile such as a pole, having an internal passage for electric conductors and for carriage entrainment means; a slide rail fixed alongside the profile; a pole head fixed with adjusting means relative to the slide rail at the top of the profile; a movable carriage; a mobile locking, stabilizing and unlocking system fixed to the carriage and corresponding stationary parts on the pole head; electric connections comprising male elements on the carriage and female ones on the pole head; a position and operation monitoring flag on the pole head, and a support for the installation such as a lighting bar. The carriage is slidingly mounted on the slide rail.
A spring operated emergency brake may be fitted on the carriage to slow it down and lock it on the slide rail should the entrainment means break or unduly loosen.
REFERENCES:
patent: 400911 (1889-04-01), Hall
patent: 1371011 (1921-03-01), Waite
patent: 1470698 (1923-10-01), Nelson
patent: 2841634 (1958-07-01), Kimball
patent: 2901202 (1959-08-01), Stava et al.
patent: 2967458 (1961-01-01), Stone
patent: 4092707 (1978-05-01), Millerbernd
patent: 4496057 (1985-01-01), Zenitani
Aldo Orlandi
Foss J. Franklin
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