Roller shutter
AssigneePerfecta Rolladen Karl & Co.
InventorManfred Dillitzer
Life of this patent
Estimating the term…
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.
Claims6
An alarm actuated roller shutter comprising:
- a pair of opposed guide rails having a guide cross sectional chamber;
- a roller shutter having a plurality of interconnected armor links disposed for movement along said guide rails, said links protruding into the guide cross sectional chambers at the lateral ends of said links;
- at least one magnetic switch for actuating an alarm system, said magnetic switch comprising a first means having contacts which are actuated in response to a magnetic field and a second means for producing the magnetic field, one of said first and second means located on one of the lowermost of said links on the inner side of said roller shutter and the other of said first and second means fixedly mounted adjacent the guide cross sectional chamber of at least one of said guide rails, said first means being actuated by said second means in the fully closed position of said roller shutter, said one means being accessible when the roller shutter is raised by a substantial distance.
Dependencies are inferred from the claim text.