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Class 33/542.1 - Telescoping caliper or stem gauge


Subclass of Class 33 - Geometrical instruments
Definition: Subject matter wherein the gauge has contact members which
No. of patents: 18
Last issue date: 07/26/2011


NumberTitleIssue Date
7984560Minimum clearance bore gauge
A method of measuring an interior diameter of a bore with an expandible gauge having relatively movable first and second components and placing an adhesive on at least one of the first and the second components for adhesively bonding the first and the second compone...
07/26/2011
7045088Measuring tool, encoder and producing method of encoder
Components of a measuring tool such as a main beam (11) and a slider (12) of a caliper gauge (1) are formed by a synthetic resin containing carbon nanofiber and an electro-conductive electrode (15) is formed on the surface of the main bea...
05/16/2006
6647637Use of magneto-resistive sensors for borehole logging
A downhole caliper instrument utilizing a linear or arcuate magneto resistive sensor to determine the position of one or more caliper arms which extend from a carrier tool to touch the surface of a borehole wall. A processor and firmware are included to c...
11/18/2003
6560889Use of magneto-resistive sensors for borehole logging
A downhole caliper instrument utilizing a magneto resistive sensor to determine the position of a caliper arm which extends to touch the surface of the borehole wall....
05/13/2003
6192593Internal shoe sizing apparatus and method for sizing shoes
There is disclosed an internal sizing apparatus comprising a pneumatically activated probe that moves axially within a shoe and non-destructively measures the interior dimensions of the shoe. A linear pneumatic actuator is mounted between a heel piece and...
02/27/2001
5901456Device for measuring distance between walls of coaxial cylindrical screens
A device for measuring distance between walls of coaxial cylindrical screens is provided. Rotation of motors is rotated to screw bars and rotation of the screw bars is converted to translational movement of gauge bars. The numbers of rotation of the screw...
05/11/1999
5735058Measuring rule
An extendible measuring rule comprises a main frame and an extension element. The extension element is mounted within the main frame for easy extension and manipulation of the extension element. The main frame includes one or more scale markings, one of w...
04/07/1998
5649369Method of and device for measuring the blade clearance of thermal turbomachines
In a device for measuring the radial blade clearance between the moving-blade tips (6) and the blade carrier (4) of thermal turbomachines with the use of a measuring needle (7) which is guided along in an opening (16) in the blade carrier (4), is accommod...
07/22/1997
5585555Borehole strainmeter
A recoverable, multiple position borehole strainmeter is provided. The strainmeter includes at least two anchors having pistons for releasably engaging the borehole whereby to mount the strainmeter in the borehole. A pneumatic actuator for controllably, i...
12/17/1996
5548901Centering tool for cylinder gauge
A centering tool that adapts to cylinder gauges to provide a fast, accurate one-time reading of the cylinder gauge. The centering tool provides adjustable interalignment elements to provide positive positioning of the gauge within the interior of the cyli...
08/27/1996
5479721Method and apparatus for measuring the length (MIU) of the internal taper of an internally upset drill pipe tube
A method of measuring the internal taper (Miu) of an internally upset tube is disclosed along with the apparatus for practicing the method. The apparatus includes a first link mechanism that is operated to move a plurality of locating arms outwardly to a ...
01/02/1996
5440819Actuator and programmable amplifier for an expanding plug gage head
An actuator and programmable amplifier is operative for use with an expanding plug gage head operated by an axially movable plunger having a tapered operating end and an opposite cross head end. The cross head end of the plunger is releasably received and...
08/15/1995
5379522Orifice eccentricity measurement tool
A measurement tool and method for measuring the eccentricity of an orifice plate bore in a longitudinal bore of an orifice fitting is disclosed. The measurement tool includes a housing having a first and second plurality of radial bores. At least one ball...
01/10/1995
5377421Centering tool for cylinder gauge
A centering tool that adapts to cylinder gauges to provide a fast, accurate one-time reading of the cylinder gauge. The centering tool provides adjustable interalignment elements to provide positive positioning of the gauge within the interior of the cyli...
01/03/1995
5259119Automatic inner diameter measuring apparatus and zero adjustment thereof
An automatic inner diameter measuring apparatus which includes an inner diameter measuring gauge head having at least one contacting element capable of being inserted into bores of an object to be measured and moving in a radial direction of the bore. A s...
11/09/1993
5205047Method and apparatus for dynamically checking dimensions of mechanical parts
A method for checking dimensions of parts foresees the use of a gauging head (2) with at least a movable feeler (14) that contacts the surface (6) of the part (4) to be checked and a transducer (20) that provides a signal responsive to the position of the...
04/27/1993
5171248Medullary caliper
An medullary caliper comprising a sleeve or tube with internally actuated caliper arms at a distal end thereof. The sleeve is graduated so that the depth at which a measurement is being taken can be immediately determined. A control rod extends the calipe...
12/15/1992
4477977Method and apparatus involving the measurement of bores
A method and apparatus for non-destructively measuring the internal volume and nominal diameter of cylindrical or substantially cylindrical bores. The apparatus includes an expander with an expandable outer skin, the expander is configured to be inserted ...
10/23/1984
 
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