PATENT OF THE WEEK – FLEXIBLE DRY SPRINKLERS

The Flexible dry sprinklers was invented by George S. Polan. This was granted patent by USPTO on 27th August 2019 bearing patent no. US10391343B2. This invention was assigned to Reliable Automatic Sprinkler Co Inc.

The invention focuses on a flexible dry fire protection sprinkler suitable for freezing areas, allowing installation adjustments to prevent obstructions. A flexible dry sprinkler has an opening, a seal assembly for the opening, and a unit for opening the opening. A flexible tube has an inlet end and an outlet end.

The inlet release unit is connected to the flexible linkage that runs through the flexible tube. The outlet end of the flexible tube and the outlet end of the flexible linkage are both connected to an outlet release unit. When the flexible dry fire sprinkler is turned on, the outlet end of the flexible linkage is moved. The outlet release unit is connected to the sprinkler body, which has an outlet orifice that is sealed by an outlet seal assembly until the temperature around the sprinkler reaches a certain level. When the predetermined temperature is reached, the inlet seal assembly is released by moving the flexible linkage in the direction of the outlet.