Patents by Inventor Randolf-Paul Rolff

Randolf-Paul Rolff 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).

  • Method for calibrating a mass spectrometric sniffing leak detector
    Patent number: 8302454
    Abstract: Usually, a sniffing leak detector must be calibrated for each tracing gas. The calibration comprises ranging of the spectral positions into the mass spectrum and the amplitude height. At least one mass line is determined with a calibrating gas. The mass lines lying between two mass lines and/or between a zero point and a line are determined by interpolation and/or extrapolation. In this manner, a sniffing leak detector can be used for such tracing gases which have not previously been used for calibration purposes.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: November 6, 2012
    Assignee: Inficon GmbH
    Inventors: Norbert Rolff, Randolf Paul Rolff, Ludolf Gerdau
  • Leakage Seeker
    Publication number: 20110100097
    Abstract: A leak detector having a pre-vacuum feed pump, a gas detector and a flow sensor. The detector also includes a buffer volume and a restrictor to be arranged between the feed pump and the flow sensor. This protects the flow sensor against pressure surges generated by the feed pump.
    Type: Application
    Filed: July 2, 2007
    Publication date: May 5, 2011
    Inventors: Ludolf Gerdau, Randolf Paul Rolff, Norbert Rolff, Daniel Wetzig
  • Method for Calibrating a Mass Spectrometric Sniffing Leak Detector
    Publication number: 20090314052
    Abstract: Usually, a sniffing leak detector must be calibrated for each tracing gas. The calibration comprises ranging of the spectral positions into the mass spectrum and the amplitude height. At least one mass line is determined with a calibrating gas. The mass lines lying between two mass lines and/or between a zero point and a line are determined by interpolation and/or extrapolation. In this manner, a sniffing leak detector can be used for such tracing gases which have not previously been used for calibration purposes.
    Type: Application
    Filed: June 2, 2006
    Publication date: December 24, 2009
    Inventors: Norbert Rolff, Randolf Paul Rolff, Ludolf Gerdau
  • Sniffing leak detector and method for operation thereof
    Patent number: 7159445
    Abstract: A sniffing leak detector includes a handpiece, supporting a sniffing tip, the detector further including a gas sensor. To promote longer life and obtaining more accurate results, the leak detector is equipped with an acceleration sensor for recording the movements of the handpiece.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: January 9, 2007
    Assignee: Inficon GmbH
    Inventors: Thomas Böhm, Gerhard Küster, Jörn Liebich, Randolf-Paul Rolff
  • Sniffing leak detector and method for operation thereof
    Publication number: 20040194533
    Abstract: The invention relates to a sniffing leak detector (1) comprising a handpiece (2), supporting a sniffing tip (5) and with a gas sensor (11). According to the invention, a longer life and more accurate results may be achieved, whereby the leak detector is equipped with an acceleration sensor (16) for recording the movements of the handpiece (2).
    Type: Application
    Filed: May 21, 2004
    Publication date: October 7, 2004
    Inventors: Thomas Bohm, Gerhard Kuster, Jorn Liebich, Randolf-Paul Rolff