Roll-up alarm screen assembly and shipping container therefor

Details Roll-up alarm screen assembly and shipping container therefor Roll-up alarm screen assembly and shipping container therefor

1987-02-03

1989-06-27

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

G08B 1308

Patent

active

048433756

ABSTRACT:
The present invention is a roll-up alarm screen assembly for use in a frame. The frame has a first magnet disposed in its bottom portion and a second magnet disposed in its top portion. The roll-up alarm screen assembly includes an alarm screen and a roll-up mechanism which rolls the alarm screen up and down. The alarm screen includes a screen mesh and a conductive wire which is mechanically coupled to the screen mesh. The roll-up alarm screen assembly also includes a first magnetic coupler and a second magnetic coupler. The first magnetic coupler electrically couples severed ends of conductive wire when the first magnetic coupler is disposed adjacent to the first magnet. The second magnetic coupler electrically couples severed ends of conductive wire when the second magnetic coupler is mechanically coupled to the roll-up mechanism and is positioned so that the second magnetic coupler is disposed adjacent to the second magnet in order to detect any movement of either the roll-up mechanism or the screen mesh.

REFERENCES:
patent: 2962187 (1960-11-01), Morris
patent: 3051935 (1962-08-01), Wilson
patent: 3167236 (1965-01-01), Scheinman
patent: 3240418 (1966-03-01), Elias
patent: 3696373 (1972-10-01), Dunn et al.
patent: 4146293 (1979-03-01), Mutton et al.
patent: 4160972 (1979-07-01), La Mell et al.
patent: 4232310 (1980-11-01), Wilson
patent: 4281320 (1981-07-01), Rosenberg
patent: 4293778 (1981-10-01), Williams
patent: 4514725 (1985-04-01), Bristley

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