Patents by Inventor Chris N. Rolph

Chris N. Rolph 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: 7275449
    Abstract: A mass flowmeter employing the Coriolis principle incorporates in at least one section two measuring tubes that extend along a common plane, as well as a connecting device that connects the two measuring tubes in the section in which they extend along the common plane. The connecting device is designed and positioned in a manner whereby its flexural strength for flections in the common plane of the measuring tubes is greater than its torsional rigidity for torsional oscillations around the connecting line between the two measuring tubes. This achieves good frequency separation between the excitation oscillations generated in the common plane of the measuring tubes and the oscillations of the measuring tubes perpendicular to the former.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: October 2, 2007
    Assignee: Krohne AG
    Inventors: Yousif Hussain, Chris N. Rolph, Vincent Cook
  • Patent number: 7073396
    Abstract: A Coriolis mass flowmeter incorporates a measuring tube for guiding a flowing medium, a first oscillator for the oscillatory stimulation of the measuring tube, as well as a first oscillation sensor and a second oscillation sensor for picking up Coriolis oscillations of the measuring tube. The first oscillator, the first oscillation sensor and the second oscillation sensor are mutually spaced apart in the longitudinal direction of the measuring tube and the first oscillator is activated by an oscillation-stimulating control device. A third oscillation sensor is provided and positioned opposite the first oscillator at the same longitudinal distance of the measuring tube. Additionally or alternatively, a second oscillator and a third oscillator may be provided, with the second oscillator positioned opposite the first oscillation sensor and the third oscillator positioned opposite the second oscillation sensor, in each case at the same longitudinal distance on the measuring tube.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: July 11, 2006
    Assignee: Krohne AG
    Inventors: Youssif A. Hussain, Chris N. Rolph, Neil Harrisson
  • Patent number: 6948379
    Abstract: A Coriolis mass flowmeter that incorporates a straight Coriolis measuring tube, two straight connecting pipes, at least one oscillator stimulating the tube, a measuring sensor associated with the tube and a compensating cylinder, where the tube is positioned within the cylinder, the two end sections of the cylinder are solidly connected to the respective end sections of the tube, the tube transitions with either end section into a connecting pipe, the connecting pipes extending outside the compensating cylinder, and by means of mounting flanges provided on the external ends of the connecting pipes, the mass flowmeter can be installed in a pipeline system. Each connecting pipe meets the requirements of the formula M ? ? ? f 2 e ? ? ? i / l 3 > 5.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: September 27, 2005
    Assignee: Krohne AG
    Inventors: Yousif A. Hussain, Chris N. Rolph, Neil Harrison, Vincent Cook, Lawrence Davies
  • Publication number: 20040173032
    Abstract: A Coriolis mass flowmeter that incorporates a straight Coriolis measuring tube, two straight connecting pipes, at least one oscillator stimulating the tube, a measuring sensor associated with the tube and a compensating cylinder, where the tube is positioned within the cylinder, the two end sections of the cylinder are solidly connected to the respective end sections of the tube, the tube transitions with either end section into a connecting pipe, the connecting pipes extending outside the compensating cylinder, and by means of mounting flanges provided on the external ends of the connecting pipes, the mass flowmeter can be installed in a pipeline system. Each connecting pipe meets the requirements of the formula 1 Mf   ⁢ 2 ei / l 3 > 5.
    Type: Application
    Filed: March 5, 2003
    Publication date: September 9, 2004
    Inventors: Yousif A. Hussain, Chris N. Rolph, Neil Harrison, Vincent Cook, Lawrence Davies
  • Patent number: 6598281
    Abstract: A method for mounting a metal body on an essentially straight measuring tube, made of titanium or zirconium, of a Coriolis mass flowmeter. The method ensures secure retention of the metal body on the measuring tube even through very extended operation of the Coriolis mass flowmeter, in that the metal body is shrink-mounted on the measuring tube.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: July 29, 2003
    Assignee: Krohne A.G.
    Inventors: Vincent Cook, Lawrence Davies, Neil Harrison, Yousif Hussain, Chris N. Rolph
  • Publication number: 20030084559
    Abstract: A method for mounting a metal body on an essentially straight measuring tube, made of titanium or zirconium, of a Coriolis mass flowmeter. The method ensures secure retention of the metal body on the measuring tube even through very extended operation of the Coriolis mass flowmeter, in that the metal body is shrink-mounted on the measuring tube.
    Type: Application
    Filed: December 4, 2002
    Publication date: May 8, 2003
    Inventors: Vincent Cook, Lawrence Davies, Neil Harrison, Yousif Hussain, Chris N. Rolph
  • Patent number: 6519828
    Abstract: Description and illustration of a method for mounting a metal body (1) on an essentially straight measuring tube (2), made of titanium or zirconium, of a Coriolis mass flowmeter. The method ensures secure retention of the metal body (1) on the measuring tube (2) even through very extended operation of the Coriolis mass flowmeter, in that the metal body (1) is shrink-mounted on the measuring tube (2).
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: February 18, 2003
    Assignee: Krohne A.G.
    Inventors: Vincent Cook, Lawrence Davies, Neil Harrison, Yousif Hussain, Chris N. Rolph
  • Patent number: 6474175
    Abstract: A mass flowmeter operating by the Coriolis principle incorporates a straight Coriolis measuring tube through which flows a fluid or medium, at least one oscillator associated with and exciting the Coriolis measuring tube, and at least one detector associated with the Coriolis measuring tube for capturing the Coriolis forces and/or the Coriolis-force-induced oscillations. To provide a Coriolis flowmeter incorporating a Coriolis measuring tube which is subject to only minimal thermal expansion and, accordingly, to only minimal thermal stress, and which is resistant to chemicals, the Coriolis measuring tube is made of a ceramic material.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: November 5, 2002
    Inventors: Lawrence Davies, Yousif Hussain, Chris N. Rolph
  • Patent number: 6463809
    Abstract: A mass flowmeter for measuring the flow of fluids, operating by the Coriolis principle and designed for mounting on a fluid-carrying, preferably straight pipe, with at least one detector capable of measuring Coriolis forces and/or Coriolis-force-induced oscillations of the pipe, and with a bridge. The detector is attached to the bridge and the bridge is mountable on the pipe. The mass flowmeter is compact and can be mounted on existing pipes of a conduit system due to a design that permits radial attachment of the bridge on the pipe.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: October 15, 2002
    Inventors: Yousif Hussain, Chris N. Rolph
  • Patent number: 6397685
    Abstract: A mass flowmeter operating by the Coriolis principle and incorporating an essentially straight, moving-fluid-conducting Coriolis measuring tube, at least one oscillator associated with and exciting the Coriolis measuring tube, at least one detector associated with the Coriolis measuring tube and sensing the Coriolis forces and/or the Coriolis oscillations generated by Coriolis forces, and a compensating cylinder in which the Coriolis measuring tube is positioned, the Coriolis measuring tube and the compensating cylinder being connected to each other in which the oscillation-capable system composed of the Coriolis measuring tube and the compensating cylinder is at least to a large extent mass-equalized both for the excitation oscillation of the Coriolis measuring tube and for the Coriolis oscillation of the Coriolis measuring tube.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: June 4, 2002
    Assignee: Krohne A.G.
    Inventors: Vincent Cook, Lawrence Davies, Neil Harrison, Yousif Hussain, Chris N. Rolph
  • Publication number: 20020020227
    Abstract: This document describes and illustrates a mass flowmeter for measuring the flow of fluids, operating by the Coriolis principle and designed for mounting on a fluid-carrying, preferably straight pipe (1), with at least one detector capable of measuring Coriolis forces and/or Coriolis-force-induced oscillations of the pipe (1), and with a bridge (2). The detector is attached to the bridge (2) and the bridge (2) is mountable on the pipe (1).
    Type: Application
    Filed: July 10, 2001
    Publication date: February 21, 2002
    Inventors: Yousif Hussain, Chris N. Rolph
  • Publication number: 20010006007
    Abstract: A mass flowmeter operating by the Coriolis principle incorporates a straight Coriolis measuring tube through which flows a fluid or medium, at least one oscillator associated with and exciting the Coriolis measuring tube, and at least one detector associated with the Coriolis measuring tube for capturing the Coriolis forces and/or the Coriolis-force-induced oscillations. To provide a Coriolis flowmeter incorporating a Coriolis measuring tube which is subject to only minimal thermal expansion and, accordingly, to only minimal thermal stress, and which is resistant to chemicals, the Coriolis measuring tube is made of a ceramic material.
    Type: Application
    Filed: December 22, 2000
    Publication date: July 5, 2001
    Inventors: Lawrence Davies, Yousif Hussain, Chris N. Rolph
  • Patent number: 6158290
    Abstract: A mass flow meter for flowing media that works on the Coriolis Principle includes at least one oscillating Coriolis line carrying the flowing medium and at least one housing holding the Coriolis line, and attachments to the housing. The mass flow meter is characterized by the fact that at least some of the attachments are connected to the housing via means of oscillation decoupling.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: December 12, 2000
    Assignee: Krohne A.G.
    Inventors: Yousif A. Hussain, Chris N. Rolph
  • Patent number: 6070474
    Abstract: A mass flowmeter for flowing media, which operates according to the Coriolis principle, has a preferably cylindrical housing, at least one preferably essentially straight Coriolis measuring tube located within the housing and connected at both of its ends to the housing, a preferably cylindrical bridge located on the Coriolis measuring tube, at least one oscillation generator acting on the Coriolis measuring tube, and at least one sensor detecting Coriolis forces and/or Coriolis oscillations based on Coriolis forces, the bridge being located symmetrically and designed symmetrically with respect to the mid-point of the Coriolis measuring tube, wherein the midpoint of the Coriolis measuring tube is defined with reference to the ends of the Coriolis measuring tube connected to the housing, and the oscillation generator and the sensor being operative between the Coriolis measuring tube and the bridge, The flowmeter is characterized by the fact that the bridge is provided with a balancing system located essentiall
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: June 6, 2000
    Assignee: Krohne A.G.
    Inventors: Roland van der Pol, Yousif A. Hussain, Chris N. Rolph
  • Patent number: 5476013
    Abstract: A mass flow meter for flowing media that works on the Coriolis Principle has at least one essentially straight Coriolis pipeline carrying the flowing medium, with at least one oscillator acting on the Coriolis pipeline and with at least one transducer detecting Coriolis forces and/or Coriolis oscillations based on Coriolis forces. Measuring errors or mechanical damage due to temperature fluctuations and outside forces and torques are minimized or eliminated by providing a compensation cylinder, and arranging the Coriolis pipeline inside the compensation cylinder.
    Type: Grant
    Filed: June 15, 1994
    Date of Patent: December 19, 1995
    Assignee: Krohne AG
    Inventors: Yousif A. Hussain, Chris N. Rolph
  • Patent number: 5365794
    Abstract: A mass flow meter for flowing media that works on the Coriolis Principle has at least one essentially straight Coriolis pipeline carrying the flowing medium, with at least one oscillator acting on the Coriolis pipeline and with at least one transducer detecting Coriolis forces and/or Coriolis oscillations based on Coriolis forces. Measuring errors or mechanical damage due to temperature fluctuations and outside forces and torques are minimized or eliminated by providing a compensation cylinder, and arranging the Coriolis pipeline inside the compensation cylinder.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: November 22, 1994
    Assignee: Krohne, AG
    Inventors: Yousif A. Hussain, Chris N. Rolph
  • Patent number: 5291792
    Abstract: A mass flow meter for flow media which works on the Coriolis Principle, has a straight Coriolis pipe carrying the flow medium, an oscillator acting on the Coriolis pipe and two transducers detecting Coriolis forces and/or Coriolis oscillations based on Coriolis forces. The Coriolis pipe also carries mass bodies and is arranged inside of a housing or compensation cylinder. The mass flow meter improves the measurement result that can be obtained by increasing the stiffness of the Coriolis pipe for the excitation mode, preferably by including a reinforcing spring which acts on Coriolis pipe to increase the pipe stiffness for the excitation mode.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: March 8, 1994
    Assignee: Krohne A.G.
    Inventors: Yousif A. Hussain, Chris N. Rolph