Roller shutter

Details Roller shutter Roller shutter

1978-11-09

1980-11-04

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

109 21, 200 6162, G08B 1308

Patent

active

042323096

ABSTRACT:
An alarm actuating roller shutter of interconnected armor links is disposed for movement within a pair of opposed guide rails each of which has an outer cross sectional chamber partitioned off from a guide cross sectional chamber. The alarm is actuated by a magnetic switch consisting of a magnetic actuator portion on at least one of the armor links and a stationary switch portion within the outer cross sectional chamber. The actuator and stationary switch portion are arranged so that the actuator portion will actuate the stationary switch portion when the roller shutter is in the closed position.

REFERENCES:
patent: 1462781 (1923-07-01), Babiarz
patent: 3009138 (1961-11-01), Lindsay
patent: 3710369 (1973-11-01), Takahashi
patent: 3975723 (1976-08-01), Bowling et al.

Affiliated with

Also associated with

Rating

Roller shutter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Roller shutter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Roller shutter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1647847