EP 1203133 A1 20020508 - APPARATUS FOR OPERATING GATES AND THE LIKE
Title (en)
APPARATUS FOR OPERATING GATES AND THE LIKE
Title (de)
EINRICHTUNG ZUM ÖFFNEN UND SCHLIESSEN VON GITTERN ODER DERGLEICHEN
Title (fr)
APPAREIL D'OUVERTURE DE BARRIERES ET DE DISPOSITIFS SEMBLABLES
Publication
Application
Priority
- SE 0001249 W 20000614
- SE 9902237 A 19990614
Abstract (en)
[origin: WO0077334A1] The invention relates to an apparatus for operating a gate (U), which apparatus is provided with a pressure generating unit, which can be mounted in the ground and which is provided with a hydraulic cylinder (A) as well as restoring springs (O) and which by means of a hydraulic circuit system actuates an opening and closing mechanism for said gate. According to the invention said cylinder (A) is designed as a primary compression cylinder, which hydraulically is connected partly to an accumulator tank (C), to accumulate a portion of the force as an overpressure, and partly to a secondary opening cylinder (D), to open the gate (U) against the force of a closing valve (V). The overpressure in the liquid is released through a duct to an expansion tank (B) through a check valve (G) in order to delay the discharge process, an effect being obtained only after the fact, that a car has passed the apparatus and the gate and that the overpressure in the expansion tank has started to decrease. Pressure peaks from very heavy cars and a second and a third axle on a car respectively will be released directly through an overpressure valve (I) back into the expansion tank.
IPC 1-7
IPC 8 full level
E05F 13/04 (2006.01); F15B 7/00 (2006.01); F15B 21/10 (2006.01)
CPC (source: EP)
E05F 13/04 (2013.01); F15B 7/00 (2013.01); F15B 21/10 (2013.01)
Citation (search report)
See references of WO 0077334A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0077334 A1 20001221; AU 5861000 A 20010102; AU 769828 B2 20040205; EP 1203133 A1 20020508; NZ 516364 A 20021126; SE 517686 C2 20020702; SE 9902237 D0 19990614
DOCDB simple family (application)
SE 0001249 W 20000614; AU 5861000 A 20000614; EP 00944525 A 20000614; NZ 51636400 A 20000614; SE 9902237 A 19990614