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| Number | Title | Issue Date |
| 7277811 | Calibration apparatus and process The invention discloses differing embodiments of calibration apparatus, and methods of use. In one embodiment, the calibration apparatus may be used to calibrate a tool, positioning system, robot, machine, or device. The calibration apparatus may include a first mem... | 10/02/2007 |
| 7174652 | Performing measurement or calibration on positioning machines A machine having a pair of spaced structures, a plurality of ball and socket joints spaced apart on each structure, and six struts interconnecting the structures. Each strut engages with a respective ball and socket joint on each of the structures, and defines a var... | 02/13/2007 |
| 7043849 | Multifunction caliper instrument for the arts A multifunction instrument comprising four movable parts, including a first leg 12, an identical second leg 14, a pointer arm 16, and a connecting arm 18. Pointer arm 16 and connecting arm 18 are permanently but pivotally co... | 05/16/2006 |
| 6918188 | Performing measurement or calibration on positioning machines Apparatus which can be used to calibrate, or provide measurement data on, a machine. The apparatus comprises two structures each with three spherical supports spaced in a triangular array thereon. The supports may be balls or sockets. The structures are interconnect... | 07/19/2005 |
| 6854196 | Adjustable baluster spacer tool An adjustable spacer tool for spacing balusters includes an extendable pantograpic assembly having a first and second end and including evenly-spaced parallel uprights and X-shaped sets of cross-bars pivotally connected to one another. Each X-shaped set is pivotally... | 02/15/2005 |
| 6836323 | Spatial reference system The present invention overcomes the disadvantages of the related art by providing a spatial reference system that includes at least one artifact assembly. The artifact assembly has a measuring bar assembly including an inner member with a proximate end and a distal ... | 12/28/2004 |
| 6662461 | Performing measurement or calibration on positioning machines Apparatus which can be used to calibrate, or provide measurement data on, a machine. The apparatus comprises two structures each with three spherical supports spaced in a triangular array thereon. The supports may be balls or sockets. The structures are i... | 12/16/2003 |
| 6647637 | Use 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 |
| 6560889 | Use 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 |
| 5836082 | Three-axis probe A three-axis sensor device, such as a probe, includes a base structure and a stylus supporting member. The base structure and stylus supporting member are connected by three linkages that limit movement of the stylus supporting member relative to the base... | 11/17/1998 |
| 5508944 | Apparatus and method for checking features of a camshaft A camshaft checking apparatus, in particular for checking the parameters of the profiles of cams, comprising a support structure and a motor means for positioning and axially rotating the shaft, linear transducers for determining radial dimensions of cams... | 04/16/1996 |
| 5174040 | Multi-leg caliper with heart scale A multi-leg caliper with heart scale allowing analysis over a variable plurality of heart beats for arrhythmia is taught. Briefly stated, a plurality of parallel members are pivotally connected to a second set of parallel members thereby forming a lattice... | 12/29/1992 |
| 4936022 | Multi-leg caliper with heart scale A multi-leg caliper with heart scale allowing analysis over a variable plurality of heart beats for arrhythmia is taught. Briefly stated, a plurality of parallel members are pivotally connected to a second set of parallel members thereby forming a lattice... | 06/26/1990 |
| 4654974 | Caliper The present invention discloses a thickness measuring caliper comprising a pair of legs in fixed spacial relationship, one leg of said pair is elongated and curved along its length and has a free end adapted for engagement with a surface of a member the t... | 04/07/1987 |
| 4399614 | Horseshoe measuring device This horseshoe measuring device consists primarily of a base member, which is used as a straight edge, for determining if a horseshoe player has a "ringer", or not, and a pair of pivotal arms are secured to the base member, for accurately measuring the di... | 08/23/1983 |
| 4277237 | Jaw implant measuring instrument A dental instrument for facilitating the selection and implantation of a generally U-shaped denture-supporting implant frame with bendable side arms. The instrument is generally similar to bow dividers, but is provided with an extensible calibrated distan... | 07/07/1981 |
