子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | Infrared absorbing glass for reed switch | US09830722 | 2001-04-27 | US06727198B1 | 2004-04-27 | Koichi Hashimoto; Hiroyuki Kosokabe |
| An infra-red absorption glass for a reed switch is suitable for encasement of a reed switch using magnetic wire members made of Fe—Ni based alloy (52 alloy). In the infra-red absorption glass, an infra-red transmittance at a wavelength of 1050 nm is not greater than 10% for a thickness of 0.5 mm and the content of Cl in the glass is not greater than 150 ppm. In the glass, a coefficient of thermal expansion in a temperature range between 30 and 380° C. is preferably 85-100×10−7/° C. In addition, the infra-red absorption glass preferably has a composition consisting essentially of, by weight percent, 60-75% of SiO2, 1-10% of Al2O3, 0-10% of B2O3, 3.5-10% of RO (R being one or more selected from Ca, Mg, Ba, Sr, and Zn), 0.5-5% of Li2O, 8-17% of Na2O+K2O, 2-10% of Fe3O4. | ||||||
| 162 | Non-invasively actuated lighted drinking vessel and base unit | US10205645 | 2002-07-24 | US20040017678A1 | 2004-01-29 | Ching Liu |
| A lighted vessel, container or other item and a base unit for same. The base unit includes a resealable watertight housing that contains a light source. A mechanism is provided that activates and de-activates the light source in a manner that in non-invasive of said housing. This mechanism preferably includes magnetic actuation. | ||||||
| 163 | Vehicle motion detector and control device arrangement | US09854565 | 2001-05-15 | US20020171538A1 | 2002-11-21 | Kuo-Hsin Su; Paul Huang |
| A vehicle motion detector and control device arrangement includes a casing, a rotor rotated with the transmission line of the cable of the mileage meter of the motor vehicle in the casing, a rotary driven member revolvably supported on a damping oil in an annular end chamber of the rotary member and maintained in the middle position by magnetic expulsive force, and switch means mounted outside the casing and induced by a magnet at the rotary driven member to turn on a control device of the motor vehicle upon operation of the motor vehicle. | ||||||
| 164 | Relative location detection sensor | US09290905 | 1999-04-12 | US06363785B1 | 2002-04-02 | Karl A. Senghaas; Peter Senghaas; Jerzy Michalec; Peter T. Kolonko, Jr.; John H. Gold |
| In one embodiment, a relative location detection apparatus including a detection unit having a support board having a plurality of spaced reed switches mounted along a lengthwise axis of the support board. Each of the reed switches has a longitudinal axis oriented substantially perpendicular to the lengthwise axis of the support board. A high intensity magnet is coupled to the support board for movement relative to the support board and in a direction substantially parallel to the support board's lengthwise axis. The magnet has north and south poles that are oppositely positioned to one another and directed toward one another across a width of the support board and into periodic alignment with the longitudinal axes of the reed switches. The magnet has a magnetic force sufficiently focused so that the magnet actuates the reed switches individually thereby indicating the magnet's location. | ||||||
| 165 | Security switch and method for installation thereof | US280958 | 1999-03-29 | US6121864A | 2000-09-19 | Ronald Edmund Tillmann |
| An electrical switch includes a magnetically actuated switch (16), such as a reed switch, and a permanent magnet (10). A path defining arrangement (14) is mechanically coupled (by track follower 210) to the permanent magnet, for allowing the magnet to move in a defined path. A particular part of the path lies adjacent to a portion of the reed switch. The particular part (218) of the path is close enough to the reed switch to actuate the switch. Consequently, or whereby, the magnet, at a particular position along the path will cause the reed switch to assume one of first (open) and second (closed) states. In a particular embodiment of the invention, the magnet, when at the particular position along the path, causes a normally-open switch to close. An energy storage arrangement is coupled to at least the magnet, for urging the magnet toward one end (220) of the path. In the particular embodiment, the energy storage arrangement is coupled to the magnet by way of a track follower (210). An elongated, nonelastic flexible actuator (24) is coupled to the magnet, for, in use, applying tension to the magnet in a direction (to the right in the illustrations) which urges the magnet toward the other end of the path. This flexible actuator may be a filament such as a fishing line. A removable holding arrangement (250, 510) is associated with the path defining arrangement, for holding the magnet in the particular part of the path. This is particularly advantageous during setup of the switch. | ||||||
| 166 | Pressure sensor with protective internal wall | US904534 | 1997-08-01 | US5939638A | 1999-08-17 | Peter J. Zovath; William L. Rose |
| A remote pressure or vacuum sensing device including a housing having first and second chambers separated by an internal wall, the first chamber being in fluid communication with a pressurized or vacuum environment to be monitored. An activator assembly is carried within the first chamber for axial movement therein between a terminal position and other positions in response to fluid communication of pressure or vacuum conditions of the monitored environment to a portion of said activator assembly. An activatable assembly is carried within the said second chamber for activation upon movement of the activator assembly from its terminal portion to other positions to provide signals for indicating pressure changes in the monitored environment. | ||||||
| 167 | Magnetically activated float switch | US258504 | 1994-06-10 | US5552774A | 1996-09-03 | R. F. Gridley |
| A magnetically activated float switch apparatus is disclosed for opening and closing an electrical circuit in response to a predetermined change in the level of a liquid. The apparatus includes a float element having an interior chamber. There is a capsule mounted within the chamber. A permanent magnet is mounted in the capsule and is slidable between first and second positions therein. A switch is mounted in the chamber adjacent to the capsule and is electrically connected to the electrical circuit. The switch is responsive to the permanent magnet in the first position for maintaining a first state and is responsive to a permanent magnet in the second position for maintaining an opposite second state. One of the states is open and the other is closed. The float element is suspended by a cable in an upright condition when the liquid is below a known level such that the magnet is in the first position and the switch is in the first state. A weight is attached to the float element for causing the float element to tip in the liquid when the liquid is at or above the known level such that the magnet shifts from the first position to the second position and the switch switches to the second state. | ||||||
| 168 | Transmitter with magnetic zero/span actuator | US629090 | 1990-12-17 | US5278543A | 1994-01-11 | Kelly M. Orth; David W. Lee; Roger L. Frick |
| A transmitter for use in a process control system has externally accessible actuators for permitting external adjustment of the zero and span (or full scale) settings of the transmitter. The transmitter has an explosion-proof housing which includes an interior chamber in which transmitter circuitry is located. Each of the actuators includes a movable magnet which operates a magnetic reed switch located within the interior chamber of the housing through a wall of the housing. Each of the magnets is mounted on a movable actuator which extends into a blind hole in a wall of the housing. By moving the magnet within its hole, the corresponding reed switch can be changed from a non-actuated to an actuated state. When the zero reed switch is actuated, the transmitter circuitry adjusts its output so that the present value of the parameter represents a process zero. When the span (or full scale) reed switch is actuated, the transmitter circuitry adjusts its output so that the present value of the sensed parameter represents a process maximum. | ||||||
| 169 | Float level switch for a nuclear power plant containment vessel | US681030 | 1991-04-05 | US5262604A | 1993-11-16 | James G. Powell |
| This invention is a float level switch used to sense rise or drop in water level in a containment vessel of a nuclear power plant during a loss of coolant accident. The essential components of the device are a guide tube, a reed switch inside the guide tube, a float containing a magnetic portion that activates a reed switch, and metal-sheathed, ceramic-insulated conductors connecting the reed switch to a monitoring system outside the containment vessel. Special materials and special sealing techniques prevent failure of components and allow the float level switch to be connected to a monitoring system outside the containment vessel. | ||||||
| 170 | Electric hair cutting apparatus | US989060 | 1992-12-10 | US5259115A | 1993-11-09 | Hans-Martin Bluder; Achim Flesser |
| The invention is directed to an electric hair cutting apparatus in which a desired length of hair is adjustable by means of a preselector slide means (72). When the hair cutting apparatus is turned on, the drive motor (90) is operated only at the setting corresponding to the preset position. The preselector slide means (72) comprises a permanent magnet (100) having associated to it a reed contact (70) which is fixedly accommodated in the casing of the hair cutting apparatus. The use of the reed contact prevents beard hair from entering the interior of the hair cutting apparatus. | ||||||
| 171 | Temperature operated switch construction and method of making the same | US945490 | 1992-09-16 | US5257002A | 1993-10-26 | Thomas M. Buckshaw; David D. Martin |
| A temperature operated switch construction, terminal block therefor and methods of making the same are provided, the switch construction comprising a housing, a movable switch arm carried in the housing, a temperature actuated unit disposed in the housing and being operatively interconnected to the switch arm to cause movement of the arm between operating positions thereof in relation to the temperature being sensed by the temperature actuated unit, the housing comprising a main part and a removable terminal block carried by the main part, the terminal block carrying a switch unit that is operatively associated with the switch arm so that the switch unit is in a first condition thereof when the switch arm is in a first operating position thereof and the switch unit is in a second condition thereof when the switch arm is in a second operating position thereof, the switch unit comprising a reed switch and the switch arm carrying a magnet for operating the reed switch to the conditions thereof as the switch arm is moved to the positions thereof, the switch arm carrying two springs for respectively engaging the housing when the switch arm is the different operating positions thereof. | ||||||
| 172 | Thermostat device | US452537 | 1989-12-18 | US5194842A | 1993-03-16 | Eric F. Lau; Mark A. Hensley, deceased; by Lawrence S. Cohen, legal representative |
| A thermostat device having a temperature responsive bimetal which permits movement of a permanent magnet between two fixed points to activate a reed switch element. The device includes a magnetic shunt for effecting a positive off position. | ||||||
| 173 | Solenoid actuator having a magnetic flux sensor | US486967 | 1990-03-01 | US5032812A | 1991-07-16 | Gerard S. Banick; John J. Haller |
| A solenoid actuator comprising a coil or coils of electrical wire and a plugnut and movable core within the coil(s). A magnetic yoke surrounds the coil(s), the axis of the latter extending across the magnetic circuit defined by the yoke. Relatively large and small permanent magnets are associated with the yoke on opposite sides of the axis, the magnets producing flux in opposite directions. A flux sensor, closer to the small magnet, senses changes in direction of the flux. When the core and plugnut are separated, the large magnet flux predominates throughout the yoke. When the core engages the plugnut, the small magnet flux predominates in its portion of the yoke, this change in flux direction being detected by the sensor. Thus, the sensor can be used to indicate the position of the core with respect to the plugnut. | ||||||
| 174 | Master cylinder with fluid level and pressure failure detector | US385502 | 1989-07-27 | US5016442A | 1991-05-21 | Richard A. Zander; Robert F. Gaiser; Donald A. Crumb |
| A master cylinder having a housing with a first bore therein for retaining a pair of pistons which move in response to an input force and develop fluid pressure to effect a brake application. A second bore in the housing carries a differential area piston connected to the pressure chambers. A reed switch retained in the housing is aligned with a first magnet located on a float in a reservoir and a second magnet is attached to the differential area piston. A ferromagnetic shield located between the reed switch and second magnet has first and second openings located in a plane on either side of the reed switch. Should a failure occur in either pressure chamber, the differential area piston moves to allow magnetic field to pass through the openings in the shield and activate the reed switch to develop a warning signal and inform an operator of a failure mode condition in the master cylinder. | ||||||
| 175 | Apparatus and method for protecting the contacts of an electrical switch from current surges | US153997 | 1988-02-09 | US4847719A | 1989-07-11 | Max W. Cook; Wade E. Moose; David C. Steele |
| The contacts of an electrical switch, such as a magnetic contact reed switch or a magnetic contact reed relay used in a burglar alarm system, are protected from being fused together by transient current surges. This protection is accomplished by providing a normally nonconductive shunting path in parallel with the switch. The shunting path includes a voltage responsive device which is biased to conduction in response to a current surge to thereby complete the shunting path and allow the current surge to bypass the switch. | ||||||
| 176 | Switch | US746993 | 1976-12-02 | US4128823A | 1978-12-05 | Akira Tanaka; Yuji Hayashi; Makoto Kassai; Toshito Hara |
| A switch is disclosed comprising two sets of rod-shaped fixed electrodes formed of a magnetic material and one cylindrical moving electrode formed of a permanent magnet, each set of the fixed electrodes being fixed to the respective end of a cylindrical vessel so that the ends of each set of the fixed electrodes face the ends of the other set of the fixed electrodes with the moving electrode capable of reciprocating between the ends of the two sets of fixed electrodes inside the cylindrical vessel. The moving electrode is comprised of at least one adhesive layer of a metal selected from the group consisting of silver, nickel, copper and alloys thereof on the surface of the permanent magnet, and at least one contact layer of a metal selected from the group consisting of rhodium, wolfram, rhenium, ruthenium and alloys thereof, silver-wolfram, gold-chromium on the adhesive layer of metal. At least the permanent magnet of the moving electrode and the adhesive layer of metal are thermally diffused with each other. | ||||||
| 177 | Collision sensor for fender bumper operated vehicle safety device | US31094372 | 1972-11-30 | US3853199A | 1974-12-10 | HAYAKAWA Y; HIRASHIMA K; MATSUI S |
| An impact-responsive switch mounted on a shock-absorbing bumper and having a housing for a bore. An elongate retractable member is axially slidably mounted in the bore to retract to open or close two contacts provided therein when subjected to a collision impact. The elongate retractable member has attached thereto a permanent magnet which, in the retracted position, applies an attractive or repulsive force tending to close or open the two contacts which are hermetically sealed within an evacuated glass tube to prevent degeneration of the contacts. The impactresponsive switch is so positioned on the bumper that the elongate member is subjected to the collision impact upon compression of a resilient member which is interposed between a back plate of a buffer bar and an end plate of a piston rod forming a part of the bumper mechanism.
|
||||||
| 178 | Hermetically sealed overcurrent relay | US32957773 | 1973-02-05 | US3805201A | 1974-04-16 | SHOFFA V |
| A hermetically sealed overcurrent relay comprising, according to the invention, a central conductor extending therethrough, magnetically operated contacts mounted on contact springs, embracing the central conductor and placed in a glass envelope, as well as two permanent magnets embracing the magnetically operated contacts and mounted movably relative thereto, the like poles of said permanent magnets being disposed on one side of the neutral section plane of the latter.
|
||||||
| 179 | Anti-skid vehicle braking system | US30921472 | 1972-11-24 | US3804999A | 1974-04-16 | HUBBARD H |
| A non-skid brake control system for vehicles, particularly towed vehicles having electrically, pneumatically and/or hydraulically operated brakes controlled from the towing vehicle. A pair of braked wheels of the towed vehicle, one on each side of the vehicle, each have a speed sensing switch to sense the rate of rotation of the associated braked trailer wheel so as to provide anti-skid modulation to the associated brake when differential braking occurs between these braked wheels. The system automatically disables the anti-skid modulation when the vehicle speed is below an adjustable predetermined speed to thereby provide full braking effort under static, hill-holding or low speed conditions. Wheel speed sensing switch constructions are employed which utilize reed switches magnetically actuated by a permanent magnet carried on a centrifugally actuated flyweight mechanism. The anti-skid system may be further modulated by a vehicle speed sensing switch to prevent dual wheel lock-up above a given vehicle speed.
|
||||||
| 180 | Safety device for industrial machines with improved mechanical sensor and associated circuit breaker assembly | US3780242D | 1972-02-09 | US3780242A | 1973-12-18 | BENDROR J |
| A safety device for industrial machines, having a plurality of individually movable mechanical sensor elements, sensing means for sensing relative movement between mechanical sensor elements, and circuit making and breaking means controlled by the sensing means, whereby the circuit making and breaking means is actuated to stop the machine on which the safety device is installed, when one of the mechanical sensor elements encounters an obstruction, such as an operator''s hand, and relative movement between mechanical sensor elements results.
|
||||||
QQ群二维码
意见反馈
意见反馈