Closing device with valve having a high speed reaction
AssigneeMineur-Becourt SA
InventorAndre Mineur
Life of this patent
Estimating the term…
Abstract
A closing device with a valve having a high speed reaction. A dome shaped valve is forced open by applying pressure to a piston which is attached to the dome. The opening pressure is provided by an electromagnetic jack and is transmitted through a lock which has a releasing threshhold. The displacement of the piston biases a return spring into a compressed state. Force applied to the lock by a solenoid counteracts the force of the return spring so as to keep the lock locked and thus keep the dome open. When enough force is applied to the dome so as to overcome the threshhold of the lock, or if the lock is intentionally released, the piston is freed and the return spring quickly forces the dome to a closed position.
Claims6
A high speed closing device, comprising;
- a frame defining an opening;
- a valve which longitudinally closes upon said frame;
- a housing secured to said frame within said opening;
- a hollow external piston, integral with said valve and slidable within the housing;
- a first spring located between the external piston and the housing for applying a closing force to the external piston to close the valve;
- a coaxial sleeve surrounding a first rod, said first rod slidable within the coaxial sleeve,
- and coupling lock means connected to the first rod for selectively coupling the first rod to the external piston when the rod is in a first position;
- means for connecting the external piston to the coupling lock means;
- first means for moving the first rod to the first position, wherein the coupling lock means is locked;
- jack means for moving the coaxial sleeve and the first rod so as to compress the first spring and move the external piston to open the valve when the rod is in the first position;
- and second means for moving the first rod to a second position for uncoupling the coupling lock means from the external piston to thereby allow rapid closing of the valve by the first spring.
A high speed closing device, comprising:
- a frame defining an opening;
- a valve which longitudinally closes upon the frame;
- a housing secured to the frame within the opening;
- a hollow external piston integral with the valve and slideable within the housing;
- a first spring, located between the external piston and the housing, for applying a closing force to the external piston which tends to close the valve;
- a hollow internal piston slideable within the external piston, said internal piston including a locking groove formed on its interior surface;
- a second spring, located between an internal shoulder of the external piston and internal piston for providing relative biasing of the pistons;
- a coaxial sleeve surrounding a first rod wherein said first rod is slideable within the coaxial sleeve;
- a coupling lock means, connected to the first rod and cooperating with the locking groove, for selectively coupling the first rod to the internal piston when the rod is in a first position;
- first means for moving the rod to the first position wherein the coupling lock means is locked;
- jack means for moving the coaxial sleeve and therefore the internal piston will move so as to initially compress the second spring and subsequently move the external piston to open the valve when said rod is in the first position;
- and
- second means for moving the first rod to a second position for uncoupling the coupling lock means from the internal piston to allow closing of the valve by the first spring.
Dependencies are inferred from the claim text.