Class 324/231 - With backing member

Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter which includes a part next to one surface
No. of patents: 35
Last issue date: 05/06/2008

Number	Title	Issue Date
7369255	Apparatus and method for capacitive measurement of materials Method for measuring thicknesses of a film, a foil or a material layer with a measuring head which is spaced away from the film and with which a capacitive thickness measurement is performed, in which an optical distance measurement is performed with a distance meas...	05/06/2008
7262867	Device to determine the thickness of a conductive layer The device comprises at least a measuring head (7) with a transmitter (7A) and a receiver (7B). The head comprises means to measure the thickness through surface resistivity and optical means to measure said thickness by measuring the transparen...	08/28/2007
7084621	Enhancement of eddy current based measurement capabilities A method and an apparatus for enhancement of the for measuring resistance-based features of a substrate is provided. The apparatus includes a sensor configured to detect a signal produced by a eddy current generated electromagnetic field. The magnetic field enhancin...	08/01/2006
RE39037	Thickness detecting caliper for sheet material having elastic arms with printed coils A pair of elastic strips are provided in order to hold sheet material to be measured in thickness. Each of the elastic strips includes of one or more elastic films. Ends of the elastic strips are supported by support portions, and the other ends of the elastic strip...	03/28/2006
6967726	Means for in-place automated calibration of optically-based thickness sensor The calibration of a laser caliber is described. The laser caliber uses first and second sensors to determine the distance to different sides of a sheet. A third sensor is used to determine the distance between the first and second sensors. The calibration of the fi...	11/22/2005
6793865	Gage thickness measurement by use of inductive sensors A measuring gage for determining the thickness of a non-metallic material utilizes an inductive sensor positioned on one side of the material to be measured and a metallic object placed on the opposite side. The output of the sensor is used to determine the distance...	09/21/2004
6586930	Material thickness measurement using magnetic information An apparatus for and a method of measuring material thickness with magnetics. The thickness monitoring system includes a thickness monitor, a probe, and a target. In a preferred embodiment, the probe is positioned on one side of an article for which the t...	07/01/2003
6494081	Method of measuring properties of paper, and arrangement in a paper measuring apparatus A measuring probe in a paper measuring apparatus is kept at a distance from the surface of the paper by feeding medium between the paper and a surface of the measuring probe through a feed hole in the surface of the measuring probe. The pressure of the su...	12/17/2002
6278270	Apparatus and method for detecting small distance changes between opposed surfaces using giant magneto resistance effect sensor A device that can sense small changes in distance between opposed surfaces includes a ferromagnetic material and a giant magneto resistance effect sensor. A current source applies a current to the sensor to operate the sensor and read the magnetic field t...	08/21/2001
6175235	Thickness detecting caliper for sheet material having elastic arms with printed coils A pair of elastic strips are provided in order to hold sheet material to be measured in thickness. Each of the elastic strips includes of one or more elastic films. Ends of the elastic strips are supported by support portions, and the other ends of the el...	01/16/2001
6145211	Contacting thickness gauge for moving sheet material A caliper gauge for moving sheet material such as paper which measures the thickness of the paper accommodates bumps or holes in the paper by providing at least one side of the caliper gauge with a long continuous smooth arm which because of its mounting ...	11/14/2000
6130536	Preform test fixture and method of measuring a wall thickness A preform test fixture for receiving a blow molding preform includes a structural base, a measuring device mount, a support arm, and a bar member having preform bores. The bar member is adjustable so that it translates up and down on the support arm, and ...	10/10/2000
5963030	Pipe inspection apparatus and process An openable ring assembly is externally centered around and moved parallel to the centerline of a stationary pipe. As a low-frequency EM source signal is applied to the ring assembly, the time and/or frequency shifts of a detected EM signal from the sourc...	10/05/1999
5770949	Device for on-line measuring of the thickness of a continuously produced sheet A measuring device scanning from edge to edge of a continuously fed sheet includes two sensing heads spaced apart from the sheet by air cushions whose thickness is not influenced by pressure of supplied air and is subjected to an invariable approaching gr...	06/23/1998
5722285	Caliper sensor A caliper sensor of the opposing contact type, wherein are provided target supporting spherical surfaces comprising at least three spherical surfaces disposed on a periphery of a target facing plane of a sliding surface and a plane determined by the tops ...	03/03/1998
5394085	Rolling probe for the continuous measuring of the thickness of layers or strips In the rolling probe, the measuring pole is designed as a rotating, rotationally symmetrical roller (4), such as a disk, cylinder or sphere, which directly contacts the surface of object to be measured (5) and is placed in the range of a sensor system. As...	02/28/1995
5327082	On line electromagnetic web thickness measuring apparatus incorporating a servomechanism with optical distance measuring Apparatus for measuring the thickness of a moving web of material in which a ferromagnetic core carrying a winding and a ferromagnetic disc are disposed on opposite sides of the web at constant distances therefrom with at least one of said distances being...	07/05/1994
5316857	Sheet material having a recognition enhancing feature A sheet material in the form of a transparent film, paper sheets, or the like, is made machine visible or recognizable by recognition enhancing elements. These elements are of such a nature that they are machine readable, e.g. by optical, electrical, or m...	05/31/1994
5200704	System and method including a buried flexible sheet target impregnated with ferromagnetic particles and eddy current probe for determining proximity of a non-conductive underground structure Both a system and a method are provided which allows an eddy current probe to accurately determine both the proximity and dimensions of non-conductive structures which are normally invisible to such probes. The system includes a portable target medium tha...	04/06/1993
5180980	Method and apparatus for magnetically measuring the thickness of a high relative permeability lubricant film between two relatively moving surfaces Method for measuring the thickness of a lubricant film between two surfaces which are in motion with regard to one another, characterized by the fact that a lubricant with high relative permeability is used, whereby the polar pieces of an electromagnetic ...	01/19/1993
5132619	Thickness gauge having a low unsprung weight for moving sheet material for lightweight paper A caliper gauge for relatively thin moving sheet material is provided by the use of a pair of outer ring air bearings flexibly supported which tend to flatten the sheet. An inner central portion of each ring respectively carries active and passive magneti...	07/21/1992
5075979	Aerodynamic caliper gauge A contacting caliper gauge measures the thickness of a moving sheet material. The gauge has two sheet contacting pads, one on either side of the sheet. At least one sheet contacting pad of the caliper gauge is aerodynamically designed to limit and/or redu...	12/31/1991
5062298	Non-contact wet or dry film thickness measuring device using eddy current and ultrasonic sensors A device for measuring the thickness of a wet or dry paint film applied on a substrate without contacting the film is disclosed. The device uses an ultrasonic sensor positioned adjacent to an inductive eddy-current proximity sensor where the ultrasonic se...	11/05/1991
5043032	Method for detecting protective layer on composite materials A protective backing for composite sheets and a method of detecting the presence of protective backing within a stack of composite sheets. The protection of the surfaces of uncured composite sheets is provided by applying a protecting backing having a met...	08/27/1991
4929895	Thickness gauge for moving sheet material with inner and outer flexibly mounted bearings A caliper gauge for relatively thin moving sheet material is provided by the use of an outer ring type air bearing, flexibly supported, which is flexibly connected again to an inner air bearing carrying the magnetic measuring components. The outer air bea...	05/29/1990
4870359	Method for measuring the thickness of a ceramic tubular molded body A thickness measurement of non-metallic material molded bodies, particularly, walls of tubular ceramics or plastics, can be simply performed with a high precision, by interposing such a molded body between a metal and a measuring probe, such as a solenoid...	09/26/1989
4791367	Contacting thickness gauge for moving sheet material A contacting thickness gauge for measuring the caliper of paper includes a U-shaped pole piece on one side of the paper with a return path being provided by a simple ferrite slab on the other side where the magnetic reluctance of the gaps provides a measu...	12/13/1988
4767987	Method and apparatus for monitoring film thicknesses by sensing magnetic interaction between members movable to a film thickness distance An improved method and apparatus for monitoring the thickness of a film includes a sensor roll which cooperates with a compliant roll to form a nip through which the film passes. As the two rolls rotate relative to each other, magnets disposed in the sens...	08/30/1988
4700486	Measuring the thickness for a continuous material web An arrangement for measuring the thickness of a continuous material web. The thickness of the material web is measured by pressing from opposite sides of the web, and on the same spot, wheels which can rotate against the web. One wheel is equipped with a ...	10/20/1987
4661774	Method and apparatus for monitoring film thickness between rotatable rolls An improved method and apparatus for monitoring the thickness of a film includes a sensor roll which cooperates with a compliant roll to form a nip through which the film passes. As the two rolls rotate relative to each other, magnets disposed in the sens...	04/28/1987
4311392	Thickness measuring apparatus for non-metallic sheet-shaped bodies A thickness measuring apparatus for non-metallic sheet-shaped bodies formed of rubber, plastic or the like which is simple in construction and small in size and can accurately measure the thickness of the non-metallic sheet-shaped body irrespective of hig...	01/19/1982
4157503	Apparatus and method for testing the thickness of the wall of a moving tube leaving an extruder An apparatus for testing the wall thickness of a moving tube of plastics or other electrically non-conducting material being produced by an extruder, comprises an electrically conductive measurement body arranged in the moving tube, a ferromagnetic holdin...	06/05/1979
4137639	Device for the measurement of the wall thickness of tubes A device for the measurement of the wall thickness of tubes, in particular for the measurement of extruded synthetic tubes during the extrusion process, comprises a common support for location within the tube and a plurality of measuring bodies mounted on...	02/06/1979
4117402	Apparatus for measuring the wall thickness of a moving tube wherein at least one measuring body inside the tube may be lifted off the tube by the motion of the tube Apparatus for measuring the wall thickness of a moving tube, for example an extruded tube of synthetic plastics material, comprises means for location in a stationary position within the tube and adapted to present at least one measuring body in resilient...	09/26/1978
4107847	Contacting caliper gauge A contacting caliper gauge measures the thickness of a sheet material moving from the anterior to the posterior of the gauge. The gauge has two matched heads, one to either side of the sheet. Each head has a base, a skid and a bellow. The skid is hinged t...	08/22/1978

PatentStorm

Bizarre Patents

PatentStorm News

Class 324/231 - With backing member