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公开(公告)号：US09958101B2
公开(公告)日：2018-05-01
申请号：US14782108
申请日：2014-04-02
申请人： ALFA GOMMA S.p.A.
发明人： Enrico Gennasio , Stefano Mazzoli , Rinaldo Doi
摘要： A quick-fit coupling (1) for pressurized fluid, comprising a hollow longitudinal valve body (3) having at least a first valve body part (4) and a second valve body part (5) that is coaxially movable with respect to the first valve body part (4), a shutter stem (6) positioned in the valve body (3) coaxially to the longitudinal axis (L) of the valve body (3), a longitudinal hollow body (7) for containing the valve body (3), disposed coaxially to the valve body (3) and defining, with the valve body (3), a hollow space (8), a drive sleeve (9) for driving the second part (5) of the valve body (3) and disposed in the hollow space (8), the second valve body part (5) being movable with respect to first valve body part (4) in contrast and by action of a first helical spring (10) positioned in the hollow space (8), the sleeve (9) being movable with respect to the valve body (3) in contrast and by action of a second helical spring (13) positioned in the hollow space (8), at least one helical spring (10, 13) having coils with a cross section elongated in shape in the direction parallel to the axis of the helical spring.
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公开(公告)号：US09879811B2
公开(公告)日：2018-01-30
申请号：US14782136
申请日：2013-12-17
申请人： ALFA GOMMA S.p.A.
发明人： Enrico Gennasio , Stefano Mazzoli , Rinaldo Doi
CPC分类号： F16L37/34 , F16K31/12 , F16L19/0206 , F16L21/08 , F16L29/007 , F16L37/56
摘要： The quick-fit coupling (1) for pressurized fluid comprises a valve body (3) extending along a longitudinal axis (L) and having an axial cavity (4) wherein a shutter stem (5) is axially movable with respect to the valve body in contrast to and by action of at least one elastic element (6) between a position for opening and a position for closing an axial passage of fluid through said cavity (4), the stem (5) being configured so as to be subjected by the fluid present in the cavity (4) to a resultant force having a substantially null component at least in an axial direction.
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公开(公告)号：US10215319B2
公开(公告)日：2019-02-26
申请号：US15509023
申请日：2015-09-01
申请人： Alfa Gomma S.p.A.
发明人： Enrico Gennasio , Stefano Mazzoli , Rinaldo Doi
摘要： The quick coupling for fluid under pressure, comprising a hollow valve body, an obturator stem slidable along an axis of the valve body in contrast and by the action of elastic means configured and arranged to automatically arrange said obturator stem in a closing position of the valve body, and hydraulic sealing means between the valve body and a cylindrical terminal of the obturator stem, the hydraulic sealing means comprising at least one hollow plain bearing for reducing friction having an internal cylindrical surface mateable with the terminal of the obturator stem, and a plurality of elastic elements independent from one another configured and arranged to strain the bearing at a radial compression force for the uniform hydraulic seal against the terminal, the elastic elements being distributed at least mainly along the extension of the bearing in the direction of the axis.
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公开(公告)号：US09903520B2
公开(公告)日：2018-02-27
申请号：US14782057
申请日：2014-04-02
申请人： ALFA GOMMA S.p.A.
发明人： Enrico Gennasio , Stefano Mazzoli , Rinaldo Doi
摘要： A quick coupling device for pressurized fluid, comprising a male coupling (2), a first adapter (36) applied to said male coupling (2) for connection to a first external element, a female coupling (1) associable with the male coupling (2), a second adapter (20) applied to said female coupling (1) for connection to a second external element, at least one adapter (36, 20) being made as an axially hollow piece exhibiting a first portion (100) having a cylindrical external cross section and at least a second portion (101) coaxial to the first portion (100) and having a polygonal external cross section, the polygonal external cross section of the second portion (101) being inscribed along the axial generatrices of the cylindrical external cross section of the first portion (100).
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公开(公告)号：US10655770B2
公开(公告)日：2020-05-19
申请号：US15572311
申请日：2016-05-04
申请人： ALFA GOMMA S.p.A.
发明人： Enrico Gennasio , Stefano Mazzoli , Rinaldo Doi
摘要： The female quick coupling engageable under pressure, comprises an outer tubular support body which extends along an axis of the coupling and has a front end and a rear end, a hollow valve body supported inside the support body and having an inlet path distal from the front end and an outlet path proximal to the front end of the support body, an obturator slidable in the valve body in the direction of the axis of the coupling so as to open and close the outlet path, the obturator comprising a mushroom-shaped head and a housing and support body for the guided sliding of the mushroom-shaped head, the housing body having an occlusion element engageable in a seat of the valve body so as to close the outlet path, a means being provided for deferring the movement of the housing body relative to said mushroom-shaped head.
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公开(公告)号：US10527209B2
公开(公告)日：2020-01-07
申请号：US15308928
申请日：2015-05-05
申请人： Alfa Gomma S.p.A.
发明人： Enrico Gennasio , Stefano Mazzoli , Rinaldo Doi
IPC分类号： F16L17/025 , F16L27/08
摘要： The rotary joint for a high pressure fluid, comprising a stator body, a rotor body, a fluid seal interposed between the stator body and the rotor body, and a friction reducer interposed between the stator body and the rotor body, the friction reducer comprising at least a first plain bearing for sustaining axial loads, and at least a second plain bearing for sustaining bending loads, the first and second bearings being made of a polytetrafluoroethylene-based (PTFE) material.
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公开(公告)号：US10082234B2
公开(公告)日：2018-09-25
申请号：US15309621
申请日：2015-05-08
申请人： Alfa Gomma S.p.A.
发明人： Enrico Gennasio , Stefano Mazzoli , Rinaldo Doi
CPC分类号： F16L37/40 , F16K15/026 , F16L37/23 , F16L37/28 , F16L37/32
摘要： A quick coupling engageable under pressure comprises a first longitudinal body longitudinally having an internal cavity open at the ends along which it is supported slidably in contrast to and by action of elastic means, a second longitudinal body longitudinally having an internal cavity open at the ends and equipped with an opening and closing valve to the flow of a fluid under pressure, the first body and the second body having locking means adapted to cooperate for locking the coupling in the engaged position, the coupling in use, in the disengaged position in which it is supplied with a fluid under pressure acting in closure on the valve, having surfaces wet by the fluid under pressure configured and arranged to eliminate the volume variation of fluid under pressure present within the coupling as the position assumed by the second body in the first body varies.
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