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US 9,850,631 B2Granted
Fan-shaped pedestrian barrier
AssigneePh-15 S.R.L.
InventorVittorio Curci
Life of this patent
Estimating the term…
Abstract
Retractable floor barriers are provided that can be quickly opened and closed by pneumatic actuators and operated by the closing and opening of an electrical circuit. The retractable floor barriers can be used at the docks of trains and subway stations to prevent accidental falls therefrom.
Claims7
A pedestrian barrier comprising:
- a metal sheet casing;
- a pair of base brackets hinged at ends of said metal sheet casing;
- a pair of metallic casing covers;
- and
- a housing-casing system having a pair of pneumatic actuators and a pair of fans comprising a PVC micro-perforated sheet, each pneumatic actuator of said pair of pneumatic actuators and each fan of said pair of fans being connected at one end to a bottom of said metal sheet casing and at another end respectively to said pair of metallic casing covers, said pair of pneumatic actuators causing a simultaneous rotation of said pair of metallic casing covers and a movement of said pair of fans.
2 more elements
A method of operating a pedestrian barrier, the method comprising:
- opening the pedestrian barrier comprising:
- closing and pressurizing a compressed air circuit;
- extending stems of a pair of pneumatic actuators;
- moving a metal casing cover;
- opening up a pair of fans each comprising a PVC micro-perforated sheet;
- and
- maintaining the fans in an open position and under tension by elastic straps, the elastic straps inhibiting passage between the fans;
- and
- closing the pedestrian barrier comprising:
- opening the compressed air circuit;
- closing the stems of the pneumatic actuators;
- moving the metal casing cover;
- closing the fans, the fans being housed and in separate areas of a metal housing;
- closing the metal casing cover;
- and
- tightening the closure of the metal casing cover by electromagnetic catches.
13 more elements
Dependencies are inferred from the claim text.