Baker Hughes Corporation

Sensors for Medicine & Science, Inc.

Other

Prime Photonics, Lc

Senseonics, Incorporated

Paul Samuel Zerwekh

Arthur Earl Colvin

Robert William Lynn

Jeffrey C Lesho

Brooks A Childers

Casey J O'Connor

Carrie R Lorenz

Steven J Walters

Clark Davis Boyd

Carl W Stoesz

Arthur E Colvin

Daniel C Blevins

Robert W Lynn

Gregory A Dale

Daniel Scott Homa

Sterrett P Campbell

Jeffery C Lesho

Brad Willis Davis

Justin Crusse

John Guarniere

Benjamin N McLeod

John S Gerig

Casey J O'connor

Methods and systems for the absolute high-resolution measurement of angle of rotation of a shaft, which allow for concurrent measuring of axial displacement and/or encoded identification information, are disclosed. Included is a method for measuring characteristics of a rotating shaft comprising obtaining optical signals by optically probing one or more patterns having a leading edge and a series of symbols disposed at one or more circumferences of the shaft; oversampling the optical signals; measuring time of arrival for the leading edges and determining therefrom an amount of time between arrival of two or more of the leading edges; interpolating and extrapolating the amount of time between arrival of the leading edges; and determining therefrom one or more of shaft twist, angle of rotation and/or axial loading, translation, or displacement. The methods include optically probing a pattern disposed around the circumference of a shaft that comprises a series of wedge-shaped symbols.

Method and system for sensing high resolution shaft position and axial displacement

A method for making a cable includes creating a curvature in a conduit; pumping one or more fibers into the conduit; and securing at least one of the one or more fibers to a shortest pathway within the conduit and cable.

Cable and method

A printed circuit device used in conjunction with inductive power and data transmission applications is formed substantially of ferrite material, with an inductive coil conductor formed around the substrate to increase the electromagnetic properties of the coil for both power and data transmission functions, thereby eliminating the need for a discrete ferrite core wire-wound coil to be connected to the circuit device.

Printed circuit board with integrated antenna and implantable sensor processing system with integrated printed circuit board antenna

A method for making a Fiber deployment assembly includes creating a curvature in a conduit; pumping one or more fibers into the conduit; and securing at least one of the one or more fibers to a shortest pathway within the conduit and Fiber deployment assembly.

Fiber deployment assembly and method

The present invention provides systems and methods for attenuating the effect of ambient light on optical sensors and for measuring and compensating quantitatively for the ambient light.

System and method for attenuating the effect of ambient light on an optical sensor

An optical inclination sensor is provided having at least one reflective surface and at least two separate optical fibers having ends spaced from a reflective surface. As the reflective surface tilts with respect to a pre-determined reference position the gap lengths between the fiber ends and the reflective surface change and the differences in these gap lengths is used to calculate an angle of inclination with respect to a reference position. The optical inclination sensor can include at least one mass attached to a housing and moveable with respect to the housing as the mass and housing are rotated about one or more axes. Optical strain sensors are disposed a various locations between the mass and housing so that as the mass moves with respect to the housing, each one of the optical strain sensors are placed in compression or tension. The housing can be a generally u-shaped housing having two arms and a base section with the mass disposed within the housing. Alternatively, the housing includes a first beam, and the mass is a second beam arranged generally orthogonal to the first beam and pivotally attached thereto. The optical strain sensors are disposed between the first beam and the second beam. The optical strain sensors are placed in tension or compression as the second beam pivots with respect to the first beam.

Optical inclination sensor

Disclosed is a sensor housing having a flexible sensor tube containing a transmission fluid and having sealed ends, and an optical sensor connected to an optical fiber. The optical sensor is adapted to measure a pressure of a fluid and this pressure is communicated to the flexible sensor tube, so that the pressure is transferred by the transmission fluid to the optical sensor. The sensor can measure temperature and/or pressure, and the sensor can be located remote from the sensor housing or within the sensor housing.

Isolated sensor housing

An optical sensor () that provides for concurrent pressure and temperature measurements at substantially the same location includes at least one launch fiber () and at least one temperature sensitive material () having a refractive index that changes with a change in temperature. The launch fiber and temperature sensitive material are spaced from each other across a gap () having length (L). A reflecting fiber () can be provided adjacent the temperature sensitive material. The optical sensor () also includes a sealed cavity (). The launch fiber () and reflecting fiber () can be attached to the tube and at least partially disposed within the cavity. Changes in pressure change the length (L) of the gap ().

Optical sensor with co-located pressure and temperature sensors

An optical fiber resistant to hydrogen-induced attenuation losses at both relatively low and relatively high temperatures includes a substantially pure silica core and a hydrogen retarding layer. The hydrogen retarding coating may be made of carbon, metal, or silicon nitride. The fiber may also include a cladding layer, a second silica layer, and a protective outer sheath.

Optical fiber

An optical sensor that includes multiple filter cavities for the simultaneous, co-located measurement of pressure and a temperature in a single structure. The sensor may include a single launch fiber bonded to a tube a pre-determined distance from a reflective fiber. The end of the reflective fiber not encased within the tube is enclosed within a cap formed of a material that has a refractive index that changes with changing temperature. Alternatively, a material having a refractive index that changes with changing temperature can be inserted into the tube to take the place of the reflective fiber. Multiple launch fibers may be incorporated within a tube.

An optical-based sensor for detecting the presence or amount of an analyte using both indicator and reference channels. The sensor has a sensor body with a source of radiation embedded therein. Radiation emitted by the source interacts with indicator membrane indicator molecules proximate the surface of the body. At least one optical characteristic of these indicator molecules varies with analyte concentration. For example, the level of fluorescence of fluorescent indicator molecules or the amount of light absorbed by light-absorbing indicator molecules can vary as a function of analyte concentration. In addition, radiation emitted by the source also interacts with reference membrane indicator molecules proximate the surface of the body. Radiation (e.g., light) emitted or reflected by these indicator molecules enters and is internally reflected in the sensor body. Photosensitive elements within the sensor body generate both indicator channel and reference channel signals to provide an accurate indication of the concentration of the analyte. Preferred embodiments are totally self-contained and are sized and shaped for use in vivo in a human being. Such embodiments preferably include a power source, e.g. an inductor, which powers the source of radiation using external means, as well as a transmitter, e.g. an inductor, to transmit to external pickup means the signal representing the level of analyte.

Optical-based sensing devices

Bakery pans (10) are moved in edge-to-edge abutment along a dough processing line. The bakery pan indexer (36) (FIG. 5) includes a surface conveyor having an array of magnets mounted thereon. The magnets firmly attach themselves to the lower surfaces of the bakery pans (10) and positively control the movement of the pans through the dough ball delivery station (37), where the dough balls (25) are delivered to the dough receiving cavities (35) of the pans. The pans are maintained in constant motion, and the pans are accelerated and decelerated in order to compensate for the varying distances between the rows of dough receiving cavities of the pans.

Growing community of inventors

Shawsville, VA, United States of America

Paul Samuel Zerwekh