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US 2007/0175211 A1Published application
Release system, particularly for releasing hydraulic actuators for automatic openings
AssigneeFindisa S.R.L.
InventorFabrizio Di Saverio
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AssigneeFindisa S.R.L.
InventorFabrizio Di Saverio
Estimating the term…
A release system, particularly for releasing hydraulic actuators for automatic openings having an articulated arm for swing-door gates, provided in a hydraulic circuit having a hydraulic pump (3), operated by a reversible motor, two cylinder-piston elements (6, 7), alternatively receiving hydraulic liquid (L) from the hydraulic pump (3) through two tubes (4, 5), a valve (9, 10) being provided along the tubes (4, 5), between each cylinder-piston element (6, 7) and the hydraulic pump (3), preventing the return of the hydraulic liquid toward the hydraulic pump (3), the return being permitted only by an inverse rotation of the pump (3) operation motor, the system being characterized in that a normally closed manual opening-closing elements (11) being provided along the tubes (6, 7), connected in parallel with respect to the pump (3).
Release system, particularly for releasing hydraulic actuators for automatic openings having an articulated arm for swing-door gates, provided in a hydraulic circuit having a hydraulic pump, operated by a reversible motor, two cylinder-piston elements, alternatively receiving hydraulic liquid from said hydraulic pump through two tubes, a valve being provided along said tubes, between each cylinder-piston element and the hydraulic pump, preventing the return of the hydraulic liquid toward the hydraulic pump, said return being permitted only by a inverse rotation of the pump operation motor, said system being characterised in that, a normally closed manual opening-closing means is provided along said tubes, connected in parallel with respect to said pump.
Dependencies are inferred from the claim text.