241 |
Photoelectric sensor assembly with transparent housing an integrally
molded lens |
US212410 |
1994-03-14 |
US5365062A |
1994-11-15 |
Akbar Saffari; Francis W. Camps; Jerry A. Medema; Charles J. Turner; Jeffrey J. Wolf |
A low cost assembly comprising only three major components: a circuit board assembly, a molded plastic housing and a molded plastic cover. The plastic parts are transparent polycarbonate (natural "Lexan") wherein the housing has an integrally molded optical quality lens. Mounting features are integrally molded on the housing and cover. The circuit board assembly uses a common board, trace pattern and terminals and can be either a source or detector by appropriate selection of electronic components mounted to the board. A plurality of rounded bosses on the housing and larger round recesses in edges of the circuit board provide a light interference fit between housing and board to firmly hold the board in place and provide correct orientation of the board relative to the housing. The board may be readily removed and replaced for field repair of the sensor. |
242 |
Bearing for use in high resolution precision control device |
US871924 |
1992-04-22 |
US5294854A |
1994-03-15 |
David L. Trumper |
A magnetic bearing is provided which may be utilized in a fine position control or movement system. Stability is enhanced by providing separate mechanisms for supporting the weight of a platen or other object being controlled with electromagnets utilized to control or compensate for motion of the platen in N degrees of freedom. The support mechanism is preferably one or more permanent magnets having an air gap with the platen which is greater than the air gap for the electromagnets. The mechanisms for supporting the weight of the platen may be made adjustable so as to support the weight of the platen regardless of any changes in such weight by, for example, adjusting the air gap for the permanent magnet to compensate for weight changes. Resonant vibration is reduced by constructing the platen of a hollowed, cellular structure, for example, a honeycomb structure. |
243 |
Device and method for micro displacement |
US951114 |
1992-09-25 |
US5287761A |
1994-02-22 |
Hiroyuki Fujii; Mamoru Abe |
A fine displacement device for establishing a measured micro displacement includes first and second plate members disposed in spaced relation to each other to define a gap therebetween with the plate members being secured to each other at opposed portions thereof. An internally threaded hole is formed through one plate member perpendicular thereto and an externally threaded screw is fastened in the hole with an end of the screw abutting against the other plate member. Upon turning the screw in one direction, the plate members will be deformed elastically in a direction perpendicular to the plate members and a distance between a plane of the first plate member and a deformed portion of the first plate member is used as a measure for establishing the micro displacement. |
244 |
Device for supporting and linearly moving an object |
US935874 |
1992-08-26 |
US5287031A |
1994-02-15 |
Toshikatsu Akiba; Shitta Shingu; Kenichi Takahara; Hiroshi Takahashi; Arata Tanaka |
A movable member is situated within a cylindrical member so as to be axially movable The movable member is supported by a magnetic bearing device in relation to the cylindrical member in a perfect non-contact manner. The cylindrical member and movable member are provided with an electromagnetic force generating mechanism for selectively applying an axial driving force to the movable member in a non-contact manner. The movable member is provided with an auxiliary plate having an inclined surface inclined with respect to the axis of the movable member. The axial position of the movable member is detected by the output of a detector which detects the distance between itself and the inclined surface. On the basis of the detected axial position and an objective position, the electromagnetic force generating mechanism is activated to set the axial position of the movable member. |
245 |
Display device for a vehicle |
US899289 |
1992-06-16 |
US5284108A |
1994-02-08 |
Yoshiyuki Furuya |
An object of the present invention is to provide a display device for a vehicle which assures that visual recognizability can be improved by using a circular disc-shaped pointer while the pointer and characters, calibrations or the like on a dial overlap each other. A circular disc-shaped pointer composed of a polarized plate and including a slit-shaped indicating portion radially extending from the central part and the outer peripheral part of the pointer is arranged in front of a dial composed of a polarizing plate and having characters, calibrations or the like placed thereon. In addition, a light source is arranged behind the dial so as to illuminate the pointer with the light beam emitted therefrom. A movement is disposed at the central part of the light source to turn the pointer. The polarizing direction of the dial and the polarizing direction of the pointer are determined such that the light beam emitted from the light source permeates through the limited region where the characters, calibrations or the like on the dial overlap the indicating portion 1a of the pointer. |
246 |
Process for automatic calibration or re-calibration of measurements of a
physical variable |
US662848 |
1991-03-01 |
US5276631A |
1994-01-04 |
Radivoje Popovic; Beat Halg |
A calibration process utilizes two nearly identical sensors. The characteristic output curve of the first sensor is obtained using the measuring outputs of the second sensor. In particular, the first sensor has a characteristic output curve f[x] where x is a physical variable to be measured. The second sensor has an output curve y[x].apprxeq.f[x+a]. Starting from an initially known portion of the curve f[x], outputs of the second sensor are utilized to extend the known portion of the characteristic output curve f[x] of the first sensor into ranges of the variable x where this function is not yet known. |
247 |
Translation device |
US875904 |
1992-04-28 |
US5252884A |
1993-10-12 |
Marinus J. J. Dona |
The invention relates to a translation device comprising an actuator body and a coupling member which mechanically contacts said actuator body, the actuator body having at least one body of a solid electrolyte which is clamped between a pair of supporting surfaces and which is provided with at least one pair of electrodes between which mass transport takes place via the electrolyte under the influence of an electric potential difference, said mass transport causing the dimensions of the electrodes to change so that the coupling member is subject to a translation in a first coordination direction relative to a reference of the device. Preferably, AgI is used as the solid electrolyte and silver is used for the electrodes. On the basis of the above-mentioned principle, translation devices can be constructed for one, two or three-dimensional translations. Translations based on both translatory and rotatory motions are possible. |
248 |
Structure for mounting an instrument on a body |
US914134 |
1992-07-17 |
US5246324A |
1993-09-21 |
Susumu Shimoyama |
A pair of side panels of a car stereo have threaded holes. A pair of brackets are secured to the side panels for mounting the car stereo on a frame of an automobile. A preventing sheet is attached to a reverse side of the side panel for preventing chips broken off from the screws and the threaded holes from falling in a space behind the side panel. |
249 |
Vibration resistant coaxial infrared diode and integrated circuit board |
US942894 |
1992-09-10 |
US5245183A |
1993-09-14 |
Thomas G. Anderson; Henry G. Kling |
For an optical sensor having a cylindrical housing and mounted on the houg axis, a mounting plug which carries a detector diode and detector amlifier, threadedly engages the housing, and temporarily engages a removeable adjusting tool. |
250 |
Vertical XY stage |
US853909 |
1992-03-19 |
US5241183A |
1993-08-31 |
Munenori Kanai; Sunao Ishihara; Atsunobu Une |
A vertical XY stage includes a base, an X-axis slider, a Y-axis slider, and a stage. The X-axis slider is movably mounted on the base. The Y-axis slider is movably mounted on the X-axis slider. Workpieces are arranged on the stage. The Y-axis slider includes a horizontally arranged slider main body, and a vertical portion vertically arranged and having a guide for allowing the Y-axis slider to move in a Y-axis direction. The stage is arranged in a space surrounded by the slider main body and the vertical portion of the Y-axis slider. The stage can be pivoted through a shaft mounted on the Y-axis slider. |
251 |
Positioning table assembly |
US794754 |
1991-11-15 |
US5217214A |
1993-06-08 |
Seiji Takei |
A positioning table assembly includes a table slidably mounted on a pair of guide rails. The table is divided into a central section and a peripheral section which are connected through a connecting section. A traction shaft of a drive motor extends through a center slot formed in the central section. A piezoelectric device is mounted on the table to displace the central section relative to the peripheral section. When the piezoelectric device is energized, the central section is displaced to establish a frictional contact between the traction shaft in rotation and the central section so that the table may move in either direction depending on the direction of rotation of the traction shaft. |
252 |
Equipment mounting assembly for railroad car couplers |
US200323 |
1988-05-31 |
US5176350A |
1993-01-05 |
Kevin M. McQuistian |
A mounting arrangement for clamping telemetering monitoring equipment to the core holes of a railroad car coupler including a mechanical assemblage having a pair of fingers which are insertable into the core holes. A tightening mechanism including rotatable threaded rod engages a pivotal gripping block which contacts a web portion between the core holes to draw the outer surfaces of the fingers tightly against the inner surface of the web portion to rigidly hold the assemblage in place. |
253 |
Liquid damping mechanism employing an adjustable shear plate |
US692191 |
1991-04-26 |
US5141064A |
1992-08-25 |
Donald J. Willemsen; John E. Uber; Steven Del Rosso |
A damping mechanism is disclosed for use with a displacement measuring device, such as a load cell of the type immersed in a motion damping liquid contained within a housing. The mechanism includes a shear plate adjustably supported by the housing within the damping liquid for movement towards and away from a facing surface of the load cell, which is supported for movement within a plane disposed parallel to the shear plate, for purposes of controlling the thickness of the layer of damping liquid disposed there-between. The thickness of the layer determines the damping characteristics of the mechanism. |
254 |
Heat responsive memory metal actuator |
US533453 |
1990-06-05 |
US5107916A |
1992-04-28 |
Ton van Roermund; Ir P. Besselink |
An actuator which includes a memory metal element, a substantially constant force counteracting spring, and an actuated element. The memory metal transforms from a martensite structure to an austenite structure at a known temperature. The martensite structure is more easily deformed than the austenite structure. The force applied by the counteracting spring is sufficient to deform the martensite structure throughout the transformation temperature range but insufficient to deform the austenite structure such that at least a portion of the memory metal element undergoes a predetermined stroke in response to the transformation of the memory metal element between the martensite and austenite states. The actuated element is connected to the memory metal element to move therewith. |
255 |
Thermally responsive article, method of making same, and a device
incorporataing said article |
US429711 |
1989-10-31 |
US5066886A |
1991-11-19 |
Leslie L. Harner; Earl L. Frantz |
A thermally respective, monometallic article is isclosed which obviates the need for bonding of dissimilar metals as in a bimetal. The thermally responsive article is formed of an alloy or a metal and has at least two portions. The two portions are characterized by different coefficients of thermal expansion over a given temperature range, the difference being sufficiently large to result in deflection of the article when heated or cooled. In the preferred form of the article, the alloy or metal is present in a first phase in one portion of the article and in a second phase in the other portion. The process for obtaining the dual phase arrangement includes subjecting one portion of an intermediate form to cold treatment, cold reduction, decarburization, or a combination thereof, depending on the material used. A cathode ray tube employing the thermally responsive article as a temperature compensating device is also disclosed. |
256 |
Dewar vessel for a superconducting magnetometer device |
US533297 |
1990-06-05 |
US5065582A |
1991-11-19 |
Heinrich Seifert |
Outside of its interior space, a Dewar vessel contains a high-frequency screening device around the superconducting parts of the measuring device. At the same time, the high-frequency screening device is designed as a thermal radiation shield, whereby its surfaces surrounding the superconducting parts are retained at a temperature level which lies between the low temperature of a cryogenic fluid and the outside temperature of the vessel. To suppress eddy currents, the surfaces of the screening device can be advantageously resolved, at least in the area of these superconducting parts, into individual, electrically conductive tracks, which are electrically insulated from each other. |
257 |
Indicator |
US489197 |
1990-03-06 |
US5040480A |
1991-08-20 |
Minoru Iwazaki; Noriaki Ohta; Hiroyasu Shiratori |
Disclosed is an indicator which includes a scale plate having a ground color, a pointer rotatably mounted on the scale plate and indicia such as numerals and scales arranged on the scale plate for indicating a specific value in cooperation with the pointer. The pointer includes an upper surface on which a fluorescent part having fluorescent brightener therein is formed, and the area of the fluorescent part of the pointer is smaller than that of the upper surface of the pointer. Each of the indicia has a contour defined by a normal ink having a different color from the ground color of the scale plate and a fluorescent part having fluorescent brightener therein formed in the contour of each indicia. The area of the fluorescent part of the indicia is smaller than that of the indicia. This indicator further includes an unltraviolet light source for illuminating the fluorescent parts of the pointer and the indicia so as to fluoresce only when the ultraviolet light source is turned on, whereby suppressing that the indicia and pointer become too bright and distracting for a driver when illuminated by the ultraviolet light source. |
258 |
Mechanical strain isolator mount |
US441673 |
1989-11-27 |
US4997158A |
1991-03-05 |
Gordon E. James |
A mechanical strain isolator mount 10 is provided to preserve the alignmental integrity of alignment sensitive instrument 25. Alignment sensitive instrument 25 is mounted on rectangular base 11. Flexural legs 15, 16, and 17 are connected at their proximal ends to rectangular base 11 at points, A, B, C, respectively. Flexural legs 15, 16, and 17 are also spaced parallel to sides AB, BC, and CD respectively. Mounting pads 20, 21, and 22 are respectively connected to legs 15, 16, and 17 at the distal ends thereof and attach mechanical strain isolator mount 10 to substrate 30 by means of threaded bolts 23. When a mounting pad and its respective leg is subjected to lateral strains in either the X or Y directon via substrate 30, the respective leg relieves the strain by bending in the direction of the strain. An axial strain on a mounting pad in the Z direction is relieved by a rotational motion of legs 15, 16, and 17 in the direction of the strain. When substrate 30 is stress free, the flexural legs return to their original condition and thus preserve the original alignmental integrity of alignment sensitive instrument 25. |
259 |
Position measuring device with an adjusting device |
US500468 |
1990-03-28 |
US4972599A |
1990-11-27 |
Alfons Ernst |
A position measuring device including an adjusting device for a sensing device of a graduation. The sensing device is adjustable relative to the graduation by the adjusting device. For the adjustment, the sensing device has three oblong holes whose longitudinal axes extend perpendicularly to each other. A cylindrical pin fixed in the adjusting device engages in one of the oblong holes. Two adjusting screws which have eccentric portions and engage in the oblong holes are used for adjusting the adjusting device in radial and tangential directions, so that the sensing device can be adjusted exactly relative to the graduation of the position measuring device. |
260 |
Alignable sensor |
US435541 |
1989-11-13 |
US4967481A |
1990-11-06 |
Wolfgang Zwicker |
An alignable sensor, the connecting housing of which receives within a passage rotatably a stub of a prismatic intermediate piece, the intermediate piece comprising a holding plate aligned at an angle of 45.degree. to the axis of the connecting piece and to a side wall, for a sensor head, and the sensor head and the intermediate piece having in common a parallelepiped contour. The passage comprises a plurality of locking recesses for fixing noses of the connecting piece. Catch curves of the stub cooperate with catch profiles of the connecting housing, in order to hold, in a catching manner, the stub in the axial direction. The holding plate rotatably receives a flange of the sensor head. |