Patents by Inventor Volker Quendt
Volker Quendt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 8291932Abstract: A valve means has a valve housing, in which an inlet duct for pressure fluid extends, the duct opening into a valve chamber, in which a valve member is held by spring means in a closed position engaging a valve seat, the valve member opening at a predetermined opening pressure of the pressure fluid present so that pressure fluid arrives by way of an opening cross section at a fluid outlet and flows from it, and the valve means comprises a control duct by way of which pressure fluid flows into a control chamber, in which a control member is held clear of a control seat by spring means in an open position, the control chamber being connected by way of a connecting duct with the valve chamber; and in which the control member so controls the exit flow of the pressure fluid that the control member is able to be shifted, prior to opening of the valve member at a control pressure below the opening pressure into engagement with its control seat so that the passage of fluid between the control chamber and the valve chType: GrantFiled: October 17, 2008Date of Patent: October 23, 2012Assignee: Festo AG & Co. KGInventors: Steffen Ilmberger, Volker Quendt, Tobias Danner
-
Patent number: 8171951Abstract: A valve (1) with a AND gate function has a valve member (2) cooperating with moving passage members (23a and 23b) in a valve housing (3) in order to control connections between one outlet (A) and two inlets (E1 and E2). If the pressure difference present at the input side goes above a threshold value, the valve member (2) can thrust back one of the passage members (23a and 23b) against the stressing force of the stressing means (34a and 34b) in order to separate the outlet (A) simultaneously from both inlets (E1 and E2). Accordingly a safety and/or a logic function may be implemented.Type: GrantFiled: June 30, 2007Date of Patent: May 8, 2012Assignee: Festo AG & Co. KGInventors: Volker Quendt, Tobias Danner
-
Publication number: 20100032036Abstract: A valve (1) with a AND gate function has a valve member (2) cooperating with moving passage members (23a and 23b) in a valve housing (3) in order to control connections between one outlet (A) and two inlets (E1 and E2). If the pressure difference present at the input side goes above a threshold value, the valve member (2) can thrust back one of the passage members (23a and 23b) against the stressing force of the stressing means (34a and 34b) in order to separate the outlet (A) simultaneously from both inlets (E1 and E2). Accordingly a safety and/or a logic function may be implemented.Type: ApplicationFiled: June 30, 2007Publication date: February 11, 2010Applicant: FESTO AG & CO. KGInventors: Volker Quendt, Tobias Danner
-
Publication number: 20090101218Abstract: A valve means has a valve housing, in which an inlet duct for pressure fluid extends, the duct opening into a valve chamber, in which a valve member is held by spring means in a closed position engaging a valve seat, the valve member opening at a predetermined opening pressure of the pressure fluid present so that pressure fluid arrives by way of an opening cross section at a fluid outlet and flows from it, and the valve means comprises a control duct by way of which pressure fluid flows into a control chamber, in which a control member is held clear of a control seat by spring means in an open position, the control chamber being connected by way of a connecting duct with the valve chamber; and in which the control member so controls the exit flow of the pressure fluid that the control member is able to be shifted, prior to opening of the valve member at a control pressure below the opening pressure into engagement with its control seat so that the passage of fluid between the control chamber and the valve chType: ApplicationFiled: October 17, 2008Publication date: April 23, 2009Applicant: FESTO AG & Co. KGInventors: Steffen Ilmberger, Volker Quendt, Tobias Danner
-
Patent number: 6851936Abstract: A vacuum producing device having an ejector means with a jet nozzle and a receiving nozzle downstream from it. At the outlet end of the receiving nozzle there is a receiving space for the fluid flowing through the receiving nozzle and an exit flow duct extends from it. The exit flow duct is provided with choke means for resetting or variably setting the fluid volumetric flow, leaving by way of the exit flow duct, in order to be able to affect the pressure obtaining in the receiving space.Type: GrantFiled: August 29, 2002Date of Patent: February 8, 2005Assignee: Festo AG & Co.Inventors: Jürgen Stingel, Volker Quendt
-
Publication number: 20030044287Abstract: A vacuum producing device having an ejector means with a jet nozzle and a receiving nozzle downstream from it. At the outlet end of the receiving nozzle there is a receiving space for the fluid flowing through the receiving nozzle and an exit flow duct extends from it. The exit flow duct is provided with choke means for resetting or variably setting the fluid volumetric flow, leaving by way of the exit flow duct, in order to be able to affect the pressure obtaining in the receiving space.Type: ApplicationFiled: August 29, 2002Publication date: March 6, 2003Applicant: FESTO AG & Co.Inventors: Jurgen Stingel, Volker Quendt
-
Patent number: 5682918Abstract: A pressure control valve, which possesses a primary pressure port, a secondary pressure port and a venting port. For control of the secondary pressure a valve operating device is present which is actuated by a control pressure present in a control chamber. A mechanical spring device urges the valve operating device against the direction of action of the control pressure in such a manner that when ambient pressure obtains in the control chamber, it automatically assumes a basic setting, in which the secondary pressure port is connected with the venting port for fluid flow. It is in this manner that there is an automatic venting of the secondary pressure port when the control chamber is free of pressure.Type: GrantFiled: February 8, 1996Date of Patent: November 4, 1997Assignee: Festo KGInventors: Kurt Stoll, Volker Quendt