Patents Assigned to Berkin B.V.
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Patent number: 7353718Abstract: A mass flowmeter of the Coriolis type with a tube through which a medium flows during operation and with excitation elements for causing the entire tube or part thereof to perform a rotational vibration about a primary axis of rotation during operation. The excitation elements are electromagnetic and do not make contact with the tube during operation and have no components that are fastened to the tube. More The tube is made of an electrically conducting material, and the excitation elements include first members for causing an electric current to flow through the tube during operation and second elements for generating a magnetic field at the area of a portion of the tube. The magnetic field is perpendicular to the direction of the current and in operation either the current or the magnetic field changes its sign periodically.Type: GrantFiled: April 27, 2006Date of Patent: April 8, 2008Assignee: Berkin B.V.Inventors: Aditya Mehendale, Joost Conrad Lötters, Jan Marinus Zwikker
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Patent number: 7340965Abstract: A mass flowmeter of the Coriolis type with a tube that forms a mechanically closed loop through which a medium flows during operation, and with preferably electromagnetic, contactless excitation elements for causing the loop to rotate in an oscillatory mode about an axis of rotation during operation. The loop has a starting point and an end point. The starting and end points are situated close together and are connected to a flexible inlet tube and a flexible outlet tube, respectively, which extend preferably in parallel and close together. The loop is resiliently suspended from the frame of the flowmeter via the flexible inlet and outlet tubes, which preferably form one integral piece with the tube of the loop.Type: GrantFiled: April 27, 2006Date of Patent: March 11, 2008Assignee: Berkin B.V.Inventors: Aditya Mehendale, Joost Conrad Lötters, Jan Marinus Zwikker
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Publication number: 20070295079Abstract: A flow sensor of the thermal type having a U-shaped sensor tube with two legs and a connecting limb with two adjoining electrical resistance elements, and with a housing. The sensor tube has an inlet side and an outlet side. The housing has a first and a second housing part of a thermally well-conducting material, each with an inner surface provided with cavities and with an outer surface. The housing parts are placed with their inner surfaces against each other, while the U-shaped sensor tube has a main surface that extends parallel to the inner surfaces. The housing parts surround the connecting limb and the legs of the U-shaped sensor tube such that the sensor tube is thermally clamped in between the housing parts in two locations: a first location situated between its inlet side and the upstream resistance element, and a second location situated between its outlet side and the downstream resistance element.Type: ApplicationFiled: May 18, 2007Publication date: December 27, 2007Applicant: BERKIN B.V.Inventors: Jeroen Wouter Bos, Ronald Wilhelmus Johannes Hoitink, Johannes Henricus Besseling, Joost Conrad Lotters
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Patent number: 7300075Abstract: Sealing assembly, for example forming part of a flowmeter. The sealing assembly comprises a first metal body with a mating surface in which a centering chamber with a flat bottom and an upright wall are provided, and a second metal body with a mating surface provided with an annular collar having a narrowed end and a centering surface that bears on the upright wall of the chamber. Bolts couple the two bodies in a detachable manner under deformation of the collar such that the mutually facing mating surfaces do not touch each other.Type: GrantFiled: March 1, 2005Date of Patent: November 27, 2007Assignee: Berkin B.V.Inventors: Lambertus Ebskamp, Nicolaas Joannes Notten
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Publication number: 20060243066Abstract: A mass flowmeter of the Coriolis type with a tube through which a medium flows during operation and with excitation elements for causing the entire tube or part thereof to perform a rotational vibration about a primary axis of rotation during operation. The excitation elements are electromagnetic and do not make contact with the tube during operation and have no components that are fastened to the tube. More The tube is made of an electrically conducting material, and the excitation elements include first members for causing an electric current to flow through the tube during operation and second elements for generating a magnetic field at the area of a portion of the tube. The magnetic field is perpendicular to the direction of the current and in operation either the current or the magnetic field changes its sign periodically.Type: ApplicationFiled: April 27, 2006Publication date: November 2, 2006Applicant: BERKIN B.V.Inventors: Aditya Mehendale, Joost Lotters, Jan Zwikker
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Publication number: 20060243067Abstract: A mass flowmeter of the Coriolis type with a tube that forms a mechanically closed loop through which a medium flows during operation, and with preferably electromagnetic, contactless excitation elements for causing the loop to rotate in an oscillatory mode about an axis of rotation during operation. The loop has a starting point and an end point. The starting and end points are situated close together and are connected to a flexible inlet tube and a flexible outlet tube, respectively, which extend preferably in parallel and close together. The loop is resiliently suspended from the frame of the flowmeter via the flexible inlet and outlet tubes, which preferably form one integral piece with the tube of the loop.Type: ApplicationFiled: April 27, 2006Publication date: November 2, 2006Applicant: BERKIN B.V.Inventors: Aditya Mehendale, Joost Lotters, Jan Zwikker
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Patent number: 7028544Abstract: A mass flowmeter of the thermal type provided with a flow sensor with a flow tube through which a fluid can flow during operation, with a temperature sensor in an upstream position (A) and a heater (H) in a downstream position (B), and power control means and temperature measuring means for keeping the temperature difference between A and B at a predetermined constant value. Between A and B, the flowmeter is provided with means for preventing the temperature at A from rising owing to thermal conduction from B to A via the tube in the case of no flow or a weak flow.Type: GrantFiled: April 29, 2004Date of Patent: April 18, 2006Assignee: Berkin B.V.Inventors: Johannes Henricus Besseling, Joost Conrad Lötters
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Patent number: 6988400Abstract: A flowmeter of the thermal type with a single flow sensor is connected to control and temperature measuring elements for measuring in a first measuring range by a first measuring method and in a second measuring range by a second measuring method. Detection elements detect the measuring method to be selected on the basis of a flow measurement, and control elements control the flow sensor in accordance with the selected measuring method.Type: GrantFiled: May 12, 2004Date of Patent: January 24, 2006Assignee: Berkin B.V.Inventor: Joost Conrad Lötters
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Patent number: 6945106Abstract: A mass flowmeter of the thermal type, having a planar, thin substrate with a sensing surface that can be brought into direct or indirect contact with a flowing fluid during a measurement, wherein electrically controllable heating elements and temperature sensor elements for determining a temperature difference are provided on the sensing surface by a planar technique. The substrate with its sensing surface is present in particular in a cavity of a module into which a feed line and a drain line for the fluid issue.Type: GrantFiled: May 10, 2004Date of Patent: September 20, 2005Assignee: Berkin B.V.Inventor: Joost Conrad Lötters
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Publication number: 20050194783Abstract: Sealing assembly, for example forming part of a flowmeter. The sealing assembly comprises a first metal body with a mating surface in which a centering chamber with a flat bottom and an upright wall are provided, and a second metal body with a mating surface provided with an annular collar having a narrowed end and a centering surface that bears on the upright wall of the chamber. Bolts couple the two bodies in a detachable manner under deformation of the collar such that the mutually facing mating surfaces do not touch each other.Type: ApplicationFiled: March 1, 2005Publication date: September 8, 2005Applicant: BERKIN B.V.Inventors: Lambertus Ebskamp, Nicolaas Notten
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Patent number: D547683Type: GrantFiled: November 1, 2006Date of Patent: July 31, 2007Assignee: Berkin B.V.Inventor: Wybren Jouwsma
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Patent number: D547684Type: GrantFiled: November 1, 2006Date of Patent: July 31, 2007Assignee: Berkin B.V.Inventor: Wybren Jouwsma
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Patent number: D548123Type: GrantFiled: November 1, 2006Date of Patent: August 7, 2007Assignee: Berkin B.V.Inventor: Wybren Jouwsma
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Patent number: D548635Type: GrantFiled: November 1, 2006Date of Patent: August 14, 2007Assignee: Berkin B.V.Inventor: Wybren Jouwsma
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Patent number: D548636Type: GrantFiled: November 1, 2006Date of Patent: August 14, 2007Assignee: Berkin B.V.Inventor: Wybren Jouwsma
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Patent number: D553036Type: GrantFiled: November 1, 2006Date of Patent: October 16, 2007Assignee: Berkin B.V.Inventor: Wybren Jouwsma
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Patent number: D553522Type: GrantFiled: November 1, 2006Date of Patent: October 23, 2007Assignee: Berkin B.V.Inventor: Wybren Jouwsma
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Patent number: D553523Type: GrantFiled: November 1, 2006Date of Patent: October 23, 2007Assignee: Berkin B.V.Inventor: Wybren Jouwsma
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Patent number: D553524Type: GrantFiled: November 1, 2006Date of Patent: October 23, 2007Assignee: Berkin B.V.Inventor: Wybren Jouwsma
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Patent number: D553525Type: GrantFiled: November 1, 2006Date of Patent: October 23, 2007Assignee: Berkin B.V.Inventor: Wybren Jouwsma