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| Number | Title | Issue Date |
| 8156658 | Linear encoder A linear encoder that includes a scale supporting a measurement graduation and an assembly that includes a support. The scale is fastened on the assembly by a fastener, wherein the fastener has a structure that makes a temperature-dependent linear expansion of the s... | 04/17/2012 |
| 7770304 | Position-measuring device and method for determining absolute position A position-measuring device includes a code and a scanning unit. The code includes a sequence of code elements arranged one after the other in a measuring direction, at least two successive code elements in each case forming one code word having position information... | 08/10/2010 |
| 7669346 | Encoder hub to disc attachment method and apparatus An annular having a central bore includes a conical surface concentric with the bore such that the conical surface has a peak, an inner trough and an outer lip and the inner trough is adjacent to the central bore. A retention groove located under the outer lip has a... | 03/02/2010 |
| 7631438 | Reversing linear drive comprising means for detecting an armature position A reversing linear drive which comprises a field coil and a magnetic armature that is excited by the magnetic field of the field coil to perform a linear, axially oscillating movement. In order to detect the armature position, the drive is provided with a stripe pat... | 12/15/2009 |
| 7596880 | Scanning unit of an optical position measuring device and optical position measuring device A scanning unit including a light source for illuminating a scale by a light beam and a detector for detecting the light beam which has been modulated by the scale as a function of a relative position between two objects. An inner chamber of the scanning unit in whi... | 10/06/2009 |
| 7516561 | Optical position measuring arrangement An optical position measuring arrangement for detecting the position of a first object and a second object which are movable in relation to each other in a measuring direction. The optical position measuring arrangement including a scale which is connected with the ... | 04/14/2009 |
| 7439488 | Positioning apparatus and method thereof A positioning apparatus for a printer is provided. The positioning apparatus includes at least one encoder, an OPC belt, and a code strip consisting of a reference bar code region, a blank region and normal bar code region. The OPC belt is moved relatively to the en... | 10/21/2008 |
| 7408654 | Method for measuring position, linear velocity and velocity change of an object in two-dimensional motion A system for reproducibly measuring motion along surfaces of arbitrary or indeterminate length and of arbitrary curvature, using an opto-electronic sensor mounted to an object in motion along the surfaces. The system involves the detection of alternating reflective ... | 08/05/2008 |
| 7404259 | Optical position measuring instrument A position measuring instrument for detecting a relative position, the position measuring instrument including a scale having a measuring graduation extending in a measuring direction and a scanning unit that can be moved in the measuring direction in relation to th... | 07/29/2008 |
| 7389595 | Position-measuring device and method for operating a position-measuring device A position-measuring device is for determining the position of two objects which are arranged displaceably with respect to each other in at least one measuring direction, and a method is for the operation of such a position-measuring device. The position-measuring d... | 06/24/2008 |
| 7356940 | Elastic fixture and attachment method for length measuring apparatus An elastic fixture which is employed for attaching a length measuring apparatus to an object to be measured having a different linear expansion coefficient therefrom. The elastic fixture is elastically deformable in the lengthwise direction of the length measuring a... | 04/15/2008 |
| 7343693 | Scale assembly for optical encoder having affixed optical reference markers A flexible optical marker is applied to an optical scale substrate to make an optical scale assembly for an optical position encoder. The marker may be a limit marker, index marker, or other type of marker. The marker substrate may be a plastic film such as polyeste... | 03/18/2008 |
| 7322229 | Device and method for measuring the profile of a surface The invention provides a surface profile measurement device for use on rigid or semi-rigid substrates, such as floors. The device includes (a) a beam; (b) at least one beam support mounted on the beam; (c) a sensor assembly slidably connected to said beam and adapte... | 01/29/2008 |
| 7299562 | Device and method for mounting a position measuring device onto a machine tool, and position measuring system A device for mounting a position measuring device onto a machine tool includes at least one hanger tool, e.g., two hanger tools. Each hanger tool includes: a bracket detachably attachable to a housing of the position measuring device, e.g., at a respective end of th... | 11/27/2007 |
| 7299564 | Scanning unit and position measuring device A scanning unit including a support and a scanning plate fastened on the support by a first fastening element and a second fastening element. An eccentric element that can be rotated around a first axis of rotation and causes pivoting of the scanning plate with resp... | 11/27/2007 |
| 7289229 | Optical displacement-measuring instrument An optical displacement-measuring instrument of a reflection type includes a sensor head movable above a scale in a direction of measurement. This instrument is of a three-grating type that comprises a first optical grating arranged close to a light source, a second... | 10/30/2007 |
| 7284338 | Position measuring system A position measuring system for determining the position of a first structural component and a second structural component. The position measuring system includes a first support for receiving a first position measuring device, which is set up and provided for being... | 10/23/2007 |
| 7281339 | Encoder system A structure and associated method to accurately read an encoder tape in an encoder system. The encoder system comprises, a read head, a shoe structure adjacent the read head, and an encoder tape. The encoder tape is adapted to be read by the read head. The shoe stru... | 10/16/2007 |
| 7225555 | Linear scale attachment device and attachment method A linear scale attachment device for holding and securely attaching a linear scale on an object to be measured is disclosed. The device includes an aluminum base formed with a holding groove having a larger opening than the width of a linear scale that is fitted in ... | 06/05/2007 |
| 7222839 | Cable slack and guide monitoring apparatus and method for a lift device The present invention is a method and apparatus for monitoring the condition of a cable in a human power amplifying lift system. The method and apparatus employ a cable slack sensor and a cable end sensor to override and prevent the lift from continuing to unwind th... | 05/29/2007 |
| 7210244 | Distance calculation device Provided is a distance calculating apparatus calculating a real distance from a map distance of a map path connecting a first point and a second point on a map, the apparatus including: a housing; a scale input unit into which a reduced scale is input, disposed in t... | 05/01/2007 |
| 7209291 | Optical displacement sensor The present invention relates to a compact and inexpensive optical displacement sensor that does not require accurate control of the distance to the object. A repetitive optical structure is utilized for formation of a repetitive optical signal emitted by an illumin... | 04/24/2007 |
| 7200515 | Rotation angle sensor A rotation angle sensor includes a first and a second detection gears rotatable with a steering shaft, a first detector configured to detect a rotation angle of the first detection gear, a second detector configured to detect a rotation angle of the second detection... | 04/03/2007 |
| 7185444 | Modular scanning unit of a position measuring system A modular scanning unit for a position measuring system and including a support having a recess with a guide surface and a holder adjustably supported upon the support, wherein the holder has a light source and a beam-shaping device aligned with the light source. A ... | 03/06/2007 |
| 7159781 | Scanning unit for a position measuring device A scanning unit for a position measuring device for scanning a measuring graduation thereof, includes a scanning structure provided on a carrier and formed such that, by interaction of electromagnetic radiation, with the measuring graduation and the scanning structu... | 01/09/2007 |
| 7146743 | Length measuring instrument A length measuring instrument capable of measuring, displaying and recording the length around a part being measured by applying a measuring belt tightly to that part and operating the instrument by single hand. A rotary shaft disposed in a housing is provided with ... | 12/12/2006 |
| 7145130 | Rotation detecting device and automobile with the same The present invention provides a rotation detecting device having a small size, low manufacturing costs, and excellent quietness, and an automobile equipped with the rotation detecting device. The rotation detecting device comprises a non-rotating internal gear 2... | 12/05/2006 |
| 7143523 | Securing device for transporting and mounting a measuring arrangement A securing device for transporting and mounting a measuring arrangement that includes a linearly extending measuring graduation, a support body for the measuring graduation, a scanning device for scanning the measuring graduation, and a mounting base for fastening t... | 12/05/2006 |
| 7143518 | Angle detector with self-calibration capability An angle detector with self-calibration capability has a number of first scale read heads and one second scale read head around the periphery of a single scale disk and includes means for performing self-calibration by determining measurement differences between the... | 12/05/2006 |
| 7134177 | Method and device for applying a scale or scale support A device for applying a scale element to a first body, in relation to which a second body can be moved in a measuring direction, the device includes an alignment element displaceable on a scale element in a measuring direction, and applied transversely thereto in a ... | 11/14/2006 |
| 7127824 | Apparatus for detecting the position in space of a carriage moveable along a coordinate axis Described is a device for machine tools or measuring apparatus for detecting the spatial position of a carriage movable in a coordinate axis along a guide with respect to a reference standard which is designed as a rectangular plate extending parallel to the guide o... | 10/31/2006 |
| 7121015 | Length measuring device A linear measuring device including a housing fastened to a first machine element and a scale within the housing, wherein the scale is fastened extending along the housing in a measuring direction. A scanning device for scanning a scale. A linear guide device includ... | 10/17/2006 |
| 7103987 | Length measuring apparatus A slider or a slide shoe for maintaining an interval between a scale and the slider is provided with inclined faces for excluding a foreign matter on a scale face or a sliding guide face at both ends of the slider in a moving direction thereof or at both ends of the... | 09/12/2006 |
| 7096595 | Guide with measuring device, and method with producing such a guide A guide with a measuring device has a guide base with a longitudinal axis, a runner guided on the guide base in a direction of the longitudinal axis, a measuring device which measures a position of the runner in the direction of the longitudinal axis of the guide ba... | 08/29/2006 |
| 7089673 | Optical angle sensor An optical rotary angle sensor with at least one first measurement member able to move in the measuring direction having light-transparent and non-transparent regions located on it, at least one second measurement member arranged static relative to the first measure... | 08/15/2006 |
| 7089678 | Encoder with reference marks A scale (10) has magnetic incremental scale marks in a track (10a), and a pseudo-random code sequence in a reference mark track (10b). Sensors (2,3) feed the pattern of the code in the track (10b) into a bi-dir... | 08/15/2006 |
| 7089672 | Optical angle and torque sensor The present invention consists of an optical sensor for determining the angle and the torque of a rotatable object (13). The sensor contains at least one patterned surface (1) an ASIC (3), at least one lens (2) and at least one EMR source... | 08/15/2006 |
| 7057159 | Emitting light source apparatus for use in optical encoder A light-emitting chip mounted on a leadframe has a light-emitting surface substantially orthogonal to an optical grating surface of a scale and in a direction of an optical grating. A transparent resin is molded so that it seals both the light-emitting chip and the ... | 06/06/2006 |
| 7040019 | Method and apparatus for manufacturing hydro dynamic bearing device A method and an apparatus for manufacturing a hydro dynamic bearing device is provided for the finishing treatment of lubricating oil after lubricating the hydro dynamic bearing device, specifically for properly and effectively wiping off the lubricating oil adherin... | 05/09/2006 |
| 7013575 | Position measuring device A position measuring device including a code having a first code element and a second code element arranged one behind the other in a measuring direction, wherein each of the first and second code elements includes a first partial area and a second partial area, whi... | 03/21/2006 |
