Title of Invention

"VALVE SEAL"

Abstract

ABSTRACT "A DEVICE IN A VALVE" A valve device comprising a valve housing (2) with at least a first (3) and a second (4) fluid port, a closure element (5) being arranged in the valve housing (2), which closure element (5) has a sealing portion (15) and comprises a diaphragm (30), the sealing portion (15) being movable along an axis of the closure element (5) by means of said diaphragm (30) between an open position and a closed position of at least one of the fluid ports of the valve housing, the closure element (5) together with the valve housing (2) forming a flow passage (11) in the valve housing (2) which communicates with said fluid ports when the sealing portion (15) leaves said closed position, wherein the sealing portion (15) of the closure element (5) is operably cormected by an actuator (6), the device having a coupling device (7) which has a locking means (8) adapted to be arranged to the valve housing (2) and an actuating device (10) adapted to be connected to the coupling device (7) to operate the actuator (6), a second sealing portion (14) of the closure element, which is an enclosing portion spaced-apart from said axis, being arranged in contact with a support portion (25) of the valve housing (2), an abutment means (16) being arranged in contact along the periphery of said second sealing portion (14) in such manner that said second sealing portion (14) is arranged between the support portion (25) and the abutment means (16), the abutment means (16) being arranged to transmit a force via said second sealing portion (14) towards the support portion (25) to provide a seal, characterised in that said abutment means (16) is a spring means adjustably arranged in the coupling device (7) by means of a thread bushing (20), and wherein the thread bushing (20) is externally threaded and coimected to a centrally arranged recess (19) in the coupling device (7). Fig. 8a

Full Text

The present invention is relates to a device in a valve. Field of the Invention The present invention relates to a device in a valve comprising a valve housing with at least a first and a second fluid port. A closure element is arranged in the valve housing, which closure element has a sealing portion and comprises a diaphragm. The sealing portion is movable along an axis of the closure element by said diaphragm between an open position and a closed position of at lease one of the fluid ports of the valve housing. The closure element together with the valve housing forms a flow passage in the valve housing which communicates with said fluid ports when the sealing portion leaves said closed position. A second sealing portion of the closure element, which is an enclosing portion spaced from said axis, is arranged in contact with a support portion of thd valve housing. An abutment ineans is arranged in contact along the periphery of said second sealing portion in such a manner kat said second sealing portion is arranged between the support portion I and the abutment means. The abutment means is arranged to transmit a force via said" second sealing portion toward the support portion to provide a seal. Background Art Valves of the above ty|»e are well known. An example of such valve is disclosed in US 2002/0113223, showing tfie features of the preamble of claim 1. Such valves arfe used in the first f place in applications where high cleanness is required. Such applications can be various fluid engineering processes or process steps, for example for pharmaceutical and food technology purposes or other types of chemical purposes. Many fluid products are expensive and/or susceptible to contamination or dangerous in case of leakage, which means that leakage can result in an unhealthy environment for the user of a product or an environment. Tightness of a v^ve of the type stated above thus is crucial. In valves of this type, a diaphragm element is operated between an open and a closed position. Fluid flowing in the valve housing can thus be easily and safely handled in an adjustable manner. The operation of the valve can take place in various ways, for example using mdiual or pneumatic control. 2 We claim: 1. A valve device comprising a valve housing (2) with at least a first (3) and a second (4) fluid port, a closure element (5) being arranged in the valve housing (2), which closure element (5) has a sealing portion (15) and comprises a diaphragm (30), the sealing portion (15) being movable along an axis of the closure element (5) by means of said diaphragm (30) between an open position and a closed position of at least one of the fluid ports of the valve housing, the closure element (5) together with the valve housing (2) forming a flow passage (11) in the valve housing (2) which communicates with said fluid ports when the sealing portion (15) leaves said closed position, wherein the sealing portion (15) of the closure element (5) is operably connected by an actuator (6), the device having a coupling device (7) which has a locking means (8) adapted to be arranged to the valve housing (2) and an actuating device (10) adapted to be connected to the coupling device (7) to operate the actuator (6), a second sealing portion (14) of the closure element, which is an enclosing portion spaced-apart from said axis, being arranged in contact with a support portion (25) of the valve housing (2), an abutment means (16) being arranged in contact along the periphery of said second sealing portion (14) in such manner that said second sealing portion (14) is arranged between the support portion (25) and the abutment means (16), the abutment means (16) being arranged to transmit a force via said second sealing portion (14) towards the support portion (25) to provide a seal, characterised in that said abutment means (16) is a spring means adjustably arranged in the coupling device (7) by means of a thread bushing (20), and wherein the thread bushing (20) is externally threaded and connected to a centrally arranged recess (19) in the coupling device (7). 2. A device as claimed in claim 1, wherein said spring means is chosen from the group of torsions springs and resilient springs with bending action. 17 3. A device as claimed in claims 1 and 2, wherein a pressure spring (35) is arranged so as to provide a compressive force parallel with said axis. 4. A device as claimed in claims 1 to 3, wherein a spring washer (36) is arranged so as to provide a compressive force parallel with said axis. 5. A device as claimed in claims 1 to 4, wherein the abutment means is a spring washer (35). 6. A device as claimed in claims 1 to 5, wherein said second sealing portion (15) of the closure element (5) has a sealing region (29) and the valve housing (2) has a complementary seat portion (31) for mutual sealing. 7. A device as claimed in claims 1 to 6, wherein the actuator (6) is elongate and arranged so that its longitudinal axis coincides with said axis of the closure element I (5) and further arranged in an actuator recess (18) through a recess (19) in the coupling device (7). Dated this 15* day of January 2008. \ r^T^VfDjJ^^^^^ [VINEETROHILLA] OF REMFRY & SAGAR ATTORNEY FOR THE APPLICANT 18

Documents:

123-del-2008-Abstract-(02-08-2013).pdf

123-del-2008-abstract.pdf

123-del-2008-Claims-(02-08-2013).pdf

123-del-2008-Claims-(17-02-2014).pdf

123-del-2008-claims.pdf

123-del-2008-Correspondence Others-(13-02-2014).pdf

123-del-2008-Correspondence Others-(17-02-2014).pdf

123-del-2008-Correspondence-Others-(02-08-2013).pdf

123-del-2008-correspondence-others.pdf

123-del-2008-Description (Complete)-(02-08-2013).pdf

123-del-2008-Description (Complete)-(17-02-2014).pdf

123-del-2008-description (complete).pdf

123-del-2008-Drawings-(02-08-2013).pdf

123-del-2008-drawings.pdf

123-del-2008-form-1.pdf

123-del-2008-Form-2-(02-08-2013).pdf

123-del-2008-Form-2-(17-02-2014).pdf

123-del-2008-form-2.pdf

123-del-2008-Form-3-(02-08-2013).pdf

123-del-2008-form-3.pdf

123-del-2008-Form-5-(17-02-2014).pdf

123-del-2008-form-5.pdf

123-del-2008-GPA-(13-02-2014).pdf

123-del-2008-pct-201.pdf

123-del-2008-Petition-137-(17-02-2014).pdf

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