1
Leon C Vandervalk: Gauge with reversible display screen. DeFelsko Corporation, Burns Doane Swecker & Mathis, November 11, 1997: US05686831 (38 worldwide citation)

A gauge includes a probe for taking measurements, a microprocessor for processing the measurements taken by the probe; and a screen display for displaying the measurements processed by the microprocessor; wherein the screen display can be selectively operated in a first mode wherein the measurements ...


2
Rashid K Aidun, Frank J Koch: Coating thickness measurement gauge. DeFelsko Corporation, Burns Doane Swecker & Mathis, August 31, 1993: US05241280 (35 worldwide citation)

A coating thickness gauge includes a measurement transducer and a particularly advantageous probe arrangement. The probe arrangement includes a probe assembly and a probe housing that encircles the probe assembly. The probe assembly may include an inductor that forms a part of an LC oscillator. The ...


3
Frank J Koch, Leon C Vandervalk, David J Beamish: High resolution ultrasonic coating thickness gauge. DeFelsko Corporation, Burns Doane Swecker & Mathis, March 3, 1998: US05723791 (31 worldwide citation)

A gauge for determining a thickness of a coating on a substrate includes a transducer for emitting ultrasonic signals into the coating and for generating electrical signals proportional to the ultrasonic signals received by the transducer, the received signals include first signals reflected from a ...


4
Frank J Koch: Coating thickness measurement gauge. DeFelsko Corporation, Burns Doane Swecker & Mathis, March 8, 1994: US05293132 (17 worldwide citation)

A coating thickness measurement gauge includes a measurement transducer and a particularly advantageous probe arrangement. The probe arrangement includes a probe assembly and a probe housing that encircles the probe assembly. The probe assembly may include an inductor that forms a part of an LC osci ...


5
Frank J Koch, Douglas Cleminshaw: Stopper for a metered dispensing unit. DeFelsko Corporation, Burns Doane Swecker & Mathis, March 14, 1995: US05397027 (15 worldwide citation)

A stopper for use in a metered dispensing unit including a conduit for carrying fluid from a container to a metering portion of the dispensing unit, the conduit having a flange at one end, a sealing member arranged on the conduit for sealing the conduit against an inside surface of the container, th ...


6
Frank J Koch, Leon C Vandervalk, David J Beamish: Coating thickness gauge. Defelsko Corporation, Burns Doane Swecker & Mathis, July 27, 1999: US05930744 (13 worldwide citation)

A modular coating thickness gauge includes a probe which generates a signal representative of coating thickness, a PCMCIA card connected to the probe for converting the signal into a standard PCMCIA output format, and a portable computing unit for receiving the signal via the PCMCIA card. The gauge ...


7
Leon Vandervalk, Frank J Koch: Nondestructive anodic capacity gauge. DeFelsko Corporation, Burns Doane Swecker & Mathis L, April 22, 1997: US05623427 (11 worldwide citation)

A method and apparatus for measuring an anodic capacity of a thermally sprayed coating are described. Eddy current techniques are used to probe the coating and resulting RMS voltages are translated into anodic capacity indications which can be standardized or absolute. Recalibration can be achieved ...


8
Frank J Koch, Marlin S Walmer: Gauge for measuring the thickness of a coating on a substrate. DeFelsko Corporation, Burns Doane Swecker & Mathis, March 10, 1992: US05094009 (9 worldwide citation)

A gauge for measuring the thickness of a coating on a substrate includes a housing, an indicator rod movably positioned within the housing, a magnet mounted on the forward end of the indicator rod, and a spring connected to the rearward end of the indicator rod. The housing can have a slot extending ...


9
Leon C Vandervalk: Delay line for an ultrasonic probe and method of using same. Defelsko Corporation, Burns Doane Swecker & Mathis, September 26, 2000: US06122968 (8 worldwide citation)

An ultrasonic probe includes an ultrasonic transducer; a delay line acoustically coupled to said transducer so that ultrasonic vibrations may be transmitted into said delay line from said ultrasonic transducer in a first direction, said delay line includes a first section and a second section; the f ...


10
Leon C Vandervalk: Delay line for an ultrasonic probe and method of using same. DeFelsko Corporation, Burns Doane Swecker & Mathis, July 7, 1998: US05777230 (8 worldwide citation)

An ultrasonic probe includes an ultrasonic transducer; a delay line acoustically coupled to said transducer so that ultrasonic vibrations may be transmitted into said delay line from said ultrasonic transducer in a first direction, said delay line includes a first section and a second section; the f ...