Hinge device for doors, shutters or the like
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United States of America Patent
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Issued Date -
Oct 22, 2020
app pub date -
Apr 4, 2017
filing date -
Apr 4, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A hinge device includes a fixed element, a movable element, and a slider. One of the fixed or the movable elements defines a working chamber receiving the slider, and the other one has a pivot causing the slider to slide upon a rotation of the pivot. The working chamber contains a working fluid and is separated into a first and a second variable volume compartments by a plunger of the slider, which includes a first valve providing fluid communication between the compartments. A first duct passing through a closing cap of the working chamber has a second valve in fluid communication with the first and second compartments and spaced from the plunger for a first part of a stroke of the plunger. During a second part of the stroke, the plunger acts upon the second valve to cause the closing element to latch toward an open or closed position.
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