Invention Grant
- Patent Title: Oil-hydraulic valve
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Application No.: US14351389Application Date: 2012-10-17
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Publication No.: US10337630B2Publication Date: 2019-07-02
- Inventor: Graziano Apadula , Graziantonio Apadula , Rocco Garcea
- Applicant: S. T. S. R. L.
- Applicant Address: IT Calderara di Reno
- Assignee: S.T. S.R.L.
- Current Assignee: S.T. S.R.L.
- Current Assignee Address: IT Calderara di Reno
- Agency: Pearne & Gordon LLP
- Priority: ITBO2011A0599 20111021
- International Application: PCT/IB2012/055650 WO 20121017
- International Announcement: WO2013/057667 WO 20130425
- Main IPC: F15B13/02
- IPC: F15B13/02 ; F16K17/04

Abstract:
A pressure limiting valve (1), operationally arranged between a high pressure zone and low pressure zone (HP, LP) of a hydraulic circuit, comprises: a valve body (4) defining a passage (11) for a fluid; a closing member (8) having a stem (10) and a closing head (9) connected thereto and movably engaged with the valve body (4) so as to move along a longitudinal or axial direction (X) between positions (P1, P2) for closing and opening the passage (11), in an opening direction (OD) and closing direction (CD), respectively; a sleeve (12) which is joined to the stem (10); a spring (S1) arranged between the sleeve (12) and the valve body (4) so as to exert a force on the closing member (8) along said longitudinal or axial direction (X), in the closing direction (CD); said sleeve (12) is irreversibly locked to the stem (10) by means of a threadless mechanical connection, in a predefined longitudinal or axial position of the said stem (10), so that the spring (S1) exerts a force of predefined value on the closing member (8) arranged in the closed position (P).
Public/Granted literature
- US20140251464A1 OIL-HYDRAULIC VALVE Public/Granted day:2014-09-11
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