US3141079A - Magnetically controlled switching devices - Google Patents

Magnetically controlled switching devices Download PDF

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US3141079A
US3141079A US206501A US20650162A US3141079A US 3141079 A US3141079 A US 3141079A US 206501 A US206501 A US 206501A US 20650162 A US20650162 A US 20650162A US 3141079 A US3141079 A US 3141079A
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flux
shunt
magnetic
reeds
windings
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Terrell N Lowry
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AT&T Corp
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Bell Telephone Laboratories Inc
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Priority to BE634159D priority Critical patent/BE634159A/xx
Priority to NL294328D priority patent/NL294328A/xx
Priority to GB1053387D priority patent/GB1053387A/en
Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US206501A priority patent/US3141079A/en
Priority to FR939340A priority patent/FR1365619A/fr
Priority to DEW34806A priority patent/DE1215258B/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/27—Relays with armature having two stable magnetic states and operated by change from one state to the other

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  • This invention relates generally to switching devices, particularly to such devices utilizing magnetic fields to effectuate movements of the contacting elements thereof, more particularly to such devices further employing shunt magnetic flux to control the magnetic fields and fluxes in the neighborhood of the contacting elements, and specifically to such devices which employ combinations of the shunt magnetic flux and the contact magnetic fluxes to control the operations of the contacting elements.
  • One example of such devices employs a sealed reed switch having a permanent magnet adjacent substantially the lengths of both of the reeds and a magnetic shunt magnetically coupled to the permanent magnet. Normally, a substantial portion of the bias magnetic flux from the permanent magnet flows into the shunt and the remainder of the flux flows through the reeds but is of an insuflicient quantity to operate the device.
  • an actuation current is applied to the shunt to cause a magnetic flux annular to the axis of the shunt.
  • This shunt flux displaces the bias flux and causes the bias flux to flow into the reeds in a more substantial quantity suflicient to eifect their mutual operation.
  • the switch is held operated by continuosuly applying an actuation signal to cause a continuous flux in the shunt.
  • Another example of such devices comprises a magnetic shunt substantially within the neighborhood of the contact areas of a sealed reed switch, a permanent magnet attached to at least one of the reeds, and two windings, one about the shunt and the other about the one reed.
  • a released condition is attained by energizing only one of the windings. This causes a substantial portion of the bias magnetic flux from the permanet magnet to flow through only the one reed and into the magnetic shunt. Very little of the bias flux flows into the other reed, and the shunt flux is not of suflicient magnitude to displace the bias flux. In this manner, the reeds are caused to be released or are held in a released condition.
  • the bias flux When both windings are simultaneously energized, the bias flux is weakened and the magnetic flux generated in the shunt is consequently of suflicient quantity to cause the weakened bias flux to be displaced from the shunt.
  • the bias flux is consequently caused to flow through both reeds thereby causing their operation.
  • the switch is held operated by the bias flux.
  • bias and shunt fluxes must be of precise magnitudes and directions relative to each other. Any deviations from these precisely determined magnitudes will result in false operations and consequent inefiiciencies.
  • a further object of my invention is to eliminate the necessity. for precisely determining the magnitudes of the bias or other flux and shunt flux with respect to each other and to increase the upper and lower limits of the magnitudes of such fluxes.
  • Another object of my invention is to improve and to make more economical the control mechanisms of such devices by increasing the ranges of permissible magnitudes of actuation signals applied thereto.
  • a yet further object of my invention is to eliminate the necessity for applying a continuous holding current or for the provision of an additional bias means to keep the switch closed after initial operation thereof.
  • other related objects of my invention are to increase the utility of such devices and to decrease their power con sumption.
  • the windings about the shunt are Wound in magnetically opposing directions; that is, in directions such that when the two shunt windings are concurrently energized by similar polarity pulses, the magnetic fluxes caused by the respective windings will be canceled in the shunt.
  • the windings about the respective reeds are wound in the same magnetic direction; that is, in directions such that when the two reed windings are concurrently energized by similar polarity pulses, the resulting magnetic fluxes will be in the same direction.
  • Pulse sources of like polarity e.g. positive polarity
  • Remanently magnetic materials are well known in the art and have the properties of high coercivity and low permeability. They exhibit two stable states of magnetic remanence, which remanences can be set by substantially short duration electrical signals.
  • My invention employs a differential mode of excitation; that is to say, switch operation is attained by concurrent multiple like-polarity signal actuation causing appropriate flux cancellations within a magnetizing structure; and switch release is advantageously attained by using only one actuation signal without any substantial flux cancellation occurring in the magnetizing structure.
  • the employed signals must, of course, be of suflicient magnitudes to cause the desired flux conditions in the magnetic structure; however, they are not limited in their upper limit of magnitude, and advantageously can be of any appropriate value, above that required.
  • This type of control excitation is disclosed, for example, in my Patent 3,037,085 of May 29, 1962.
  • a released state is caused by applying a positive polarity pulse of appropriate duration and magnitude from the pulse source to only one of the sets of windings.
  • a magnetic flux (called first flux for purposes of explanation) tends to be produced axial of the winding and in line with the associated reed and another magnetic flux (called second flux) is generated in the shunt directed in line with the contacting ends of the reeds.
  • the second flux is more dominant in magnitude than the first flux.
  • the second flux overcomes the first flux and establishes the magnetic remanences of the two reeds such that similar magnetic poles are induced at the respective contact ends of the reeds.
  • the similar poles cause the reeds to mutually repel and with the help of the natural stiflnesses of the reeds cause them to open or to remain open.
  • the operate condition of the switch is caused, in accordance with the principles of my invention, by applying positive polarity pulses of appropriate durations and magnitudes concurrently from the pulse sources to both sets of windings.
  • positive polarity pulses of appropriate durations and magnitudes concurrently from the pulse sources to both sets of windings.
  • two first fluxes in line with the reeds and in similar directions and two second fluxes in the shunt which are in opposite directions to each other but of equal magnitude. Consequently, the second fluxes in the shunt are mutually canceled therein and the first fluxes in the reeds are added together and flux is caused to flow between the contacting ends of the reeds and across the air gap therebetween.
  • the remanences of the reeds are set such that opposite magnetic poles are induced at the respective contact ends of the reeds. The opposite poles cause the reeds to mutually attract and close.
  • the windings about the shunt are disposed at substantial acute angles with respect to a line perpendicular of the contacting ends of the reeds.
  • a substantial portion of the second flux will, as in the previously-described embodiment, be caused to flow into the two reeds eflecting their release.
  • the two second fluxes add vectorially resulting in the total flux flowing in a direction substantially diverted from the contacting portions or ends of the reeds.
  • the vectorial sum of second fluxes is substantially zero in the direction toward the contacting portions of the reeds.
  • the second fluxes as in the previously-described embodiment, have no effect upon the first fluxes which cause operation of the reeds.
  • I employ a pair of parallelly disposed sealed reed switches and a shunt situated at right angles to and between two switches and adjacent the contacting ends of the reeds of the two switches. At the corresponding terminal ends of both switches I provide highly permeable magnetic members to interconnect the terminal ends of the respective switches. Two sets of windings are wound about the shunt and the reeds in the same manner as that described for the first and second embodiments except that the windings couple both switches instead of only the one switch.
  • the operate condition is effected in the same manner as described in the two previous embodiments and involves no changes in the magnetic circuits except that there are two separate flux paths, one through the reeds of each switch.
  • the released condition of the switches is caused in the same manner as above described, that is, by energizing only one set of windings with a positive polarity pulse from a pulse source.
  • a second magnetic flux from the shunt is driven in separate paths through the two reeds of each switch. However, one magnetic flux flows from the shunt, through one reed of one switch, through an end interconnecting member, through one reed of the other switch and back to the shunt.
  • the other magnetic flux flows from the shunt, through the other reed of the first switch, through the other end interconnecting member, through the other reed of the other switch and back to the shunt.
  • the end interconnecting members and the reeds of the second switch provide a flux path which is lower in reluctance than that presented by air and enable the attainment of a released state of the switches with substantially less power than the above-described embodiments which completed their flux paths through the air.
  • a feature of my invention is a switching device wherein I provide a pair of contact members held in operative relationship to each other, first means for electively magnetizing the contact members, and second means for driving a magnetic flux into the vicinity of the operative parts of the contact members when only one of the contact members is magnetized by the first means and for preventing the magnetic flux from being driven into the vicinity of the operative parts of the members when both contact members are magnetized by the first means.
  • Another feature of my invention is such a device wherein I provide that the first means comprise a winding about each of the members and wherein I provide that the second means comprises at least a pair of windings.
  • a further feature of my invention is such a device wherein I provide that the second means further comprise a magnetic shunt disposed substantially within the vicinity of the operative parts of the members and wherein I dispose the pair of windings about the magnetic shunt in opposing magnetic directions.
  • Another feature of my invention is such a device wherein I provide that the second means further comprise circuit means for connecting one of the shunt windings to one of the member windings and circuit means for connecting the other shunt winding to the other member winding, and wherein I further provide means for energizing one of the interconnected windings to cause one member to tend to be magnetized and to cause shunt magnetic flux to flow through both of the members and means for concurrently energizing the two interconnected windings to cause concurrent magnetizations of the members and to prevent the shunt magnetic flux from influencing the members.
  • a still further feature of my invention is such a device wherein I provide that the members comprise remanently magnetic material and the magnetic shunt comprise a soft magnetic material.
  • FIG. 1 depicts an illustrative embodiment of my invention which employs a single sealed reed switch and a particular winding arrangement;
  • FIGS. 2A, 2B, 2C depict with representative arrows the remanent magnetization states of the reeds of FIG. 1 and magnetic flux flow causing operation and release of the reeds;
  • FIG. 3 depicts another illustrative embodiment which employs a pair of sealed reed switches and a winding arrangement similar to the embodiment of FIG. 1;
  • FIGS. 4A, 4B, 4C depict with representative arrows, in a manner similar to FIGS. 2A, 2B, 2C, the remanent magnetization states of the reeds of FIG. 3 and magnetic flux flow causing operation and release of the pair of switches;
  • FIG. 5 depicts still another embodiment which is similar to the embodiment of FIG. 3 with the exception that a different winding arrangement is employed.
  • FIGS. 6A, 6B, 6C are similar to FIGS. 4A, 4B, 4C with the exception that FIG. 6C depicts the flux pattern caused by the winding arrangement employed in FIG. 5.
  • FIG. 1 I depict a sealed reed switch I having a pair of remanently magnetic reeds A and B supported to form overlapping contact areas C and enclosed within a protective appropriate atmosphere, e.g. Nitrogen-I-Iydrogen mixture, by glass envelope D.
  • a soft magnetic shunt 3 is disposed about the envelope D and substantially within the vicinity of the contact surfaces C.
  • the shunt 3 can be of any highly permeable material such as soft iron.
  • winding 6 A is wound about reed B and is serially connected to winding 6B which is wound about shunt 3
  • winding 7A is wound about reed A and is serially connected to winding 7B which is wound about shunt 3.
  • the number of turns of winding 6A and 7A need not be precisely determined. However, the windings 7B and 68 must be substantially equal in the number of turns and wound in magnetically opposing directions.
  • the amount of magnetic flux which is generated by winding 7B must be substantially greater than the magnetic flux which is or tends to be generated by winding 7A and likewise the magnetic flux which is generated by winding 6B must be substantially greater than the magnetic flux which is or tends to be generated by winding 6A.
  • sources 8 and 9 are connected through respective switches 11 and to the respective windings 6A and 7A.
  • the sources 8 and 9 are depicted as being batteries. They can, however, be of any other known types, such as generators, oscillators, et cetera, so long as the required amounts, polarities and durations of current can be supplied thereby.
  • FIGS. 2A, 2B, 2C open headed arrows Ztl and 2th represent the remanent magnetization states or remanences of the respective reeds A and B of scaled reed switch 1.
  • the closed arrows 21 represent the magnetic flux flow in shunt 3.
  • the dotted lines and closed arrows 23 represent magnetic fluxes traveling through the air to close magnetic circuits between the reeds and shunts in FIGS. 2A and 2B and between the reeds in FIG. 2C.
  • FIG. 2A and 2B represent the remanent magnetization states and magnetic flux flow during the released condition (contact areas C not in contact) of the switch.
  • FIG. 2C represents the remanent magnetization states and magnetic flux flow during the operated condition (contact areas C in' contact) of the switch.
  • a released condition of the switch 1 of FIG. 1 is attained by energizing only one of the two sets of windings 7A, 7B and 6A, 6B.
  • source 9 applies a positive polarity signal through winding 7B and through winding 7A to ground.
  • the magnetic condition of the device for this example is depicted in FIG. 2B. This causes winding 7A to tend to produce a magnetic flux which would tend to set the remanence of reed A to point up, i.e., toward the top of the figure.
  • winding 7B simultaneously generates a magnetic flux 21, pointing to the left in FIG. 2B, which is greater than the flux which is tended to be generated by winding 7A.
  • the flux 21 is driven into the reeds A and B at their contact areas C. It overcomes any flux which winding 7A tended to produce and causes the remanence of reed A to be set in the direction as depicted by open arrow 20 pointing down in FIG. 2B. Moreover, flux 21 is driven through reed B to cause the remanence thereof to be in the direction as depicted by open arrow 20 pointing up in FIG. 2B. The magnetic flux 21 is caused to be driven through the reeds rather than through the air due to the lower magnetic reluctances presented by the reeds in comparison to the reluctance presented by air.
  • the remanent ma terial employed in the reeds should, therefore, be appropriate to insure this relationship of reluctances. Similar remanent magnetic poles are induced at the respective contact ends C of the reeds Aand B causingthe reeds to mutually repel and thus be in a released condition.
  • the magnetic circuits are completed by magnetic fluxes (rep resented by dotted lines and closed arrows 23) returning from the reeds A and B, respectively, through the air, back to the shunt 3, in the manner depicted.
  • Source 8 is then connected to winding 6A and applies a positive polarity signal through winding 6A and through winding 6B to ground.
  • the magnetic condition of the device for this case is depicted in FIG. 2A.
  • dominant magnetic flux 21 is generated by winding 6B in the shunt 3.
  • This dominant flux is driven into reeds A and B and overcomes the flux in reed B which is or tends to be generated by winding 6A.
  • the remanent magnetization states of reeds A and B are set in the directions as depicted by open arrow 20 pointing up and open arrow 20 pointing down in FIG. 2A.
  • FIG. 2C An operated condition of the embodiment of FIG. 1 is attained by concurrently applying signals to the two sets of windings 6A, 6B and 7A, 7B.
  • the magnetic conditions of the device for this situation are depicted in FIG. 2C. This is done by closing, for a brief period of time, switches 10 and 11 to connect sources 9 and 8 to respective windings 7B and 6A. Positive polarity signals from these respective sources flow through the windings to ground. The magnetic flux tending to be generated by winding 7B within the shunt 3 is canceled by the flux tending to be generated Within the shunt 3 by winding 6B.
  • Opposite remanent magnetic poles are induced at the contact ends of the reeds causing the reeds to mutually attract and close.
  • the magnetic circuit is closed by flux flowing through both reeds and through the air back to the reeds as shown by the dotted lines and closed arrow 23 pointing clockwise in FIG. 2C. Once .the switch is closed, the remanent magnetization of the. reeds holds the reeds closed until a released condition is affected in the abovedescribed manner.
  • FIG. 3 depicts structural elements corresponding to those of the embodiment of FIG. 1 and employs the same numbering scheme therefor.
  • FIG. 3 depicts a second sealed reed switch 2 and a pair of soft magnetic shunts 4 and disposed in the manner depicted.
  • the shunt 3 in this embodiment is magnetically coupled to the contact ends C of both reed switches l and 2.
  • windings 6A and 7A in this embodiment are wound about the respective reeds of both switches.
  • FIGS. 4A, 4B and 4C depict the same open arrows 2%,; and 29 and closed arrows 21 as the corresponding FIGS. 2A, 2B and 2C.
  • closed arrows 22 in FIGS. 4A and 4B depict the directions of magnetic flux flow in magnetic shunts 4 and 5 and open arrows 29 and 2% represent the remanent magnetization states or remanences of the respective reeds of the added switch 2.
  • FIG. 4A represents the magnetic conditions of the embodiment of FIG. 3 in the released condition when source 8 alone is connected to windings 6A and 6B.
  • FTG. 41% represents the magnetic conditions of the same embodiment in the released condition when source 9 alone is connected to windings 7A and 7B.
  • FlG. 4C represents the magnetic conditions of the same embodiment in the operate condition when both sources 8 and 9 are connected to the windings.
  • a released condition of both switches l and 2 attained, as in the embodiment of FIG. 1, by en only one of the sets of windings 6A, 6B and 7A, difi erence between the embodiment of PEG. 3 and the embodiment of PEG. 1 is that in the released condition of FIG. 3 the magnetic shunts 4 and 5 and the reeds of second switch 2 enable a more eflicient utilization of the magnetic flux. Accordingly, while in FIG. 1, in the released condition, magnetic flux circuits were completed by magnetic fluxes flowing through the air between the shunt and the reeds, in this embodiment of FIG.
  • FIG. 4A represents the magnetic conditions when source S is connected to winding A. Magnetic flux, shown as closed arrow 21 pointing to the right, is produced which splits into two paths, one path which extends counterclockwise through reed B of switch 2, through shunt ias represented by closed arrow 27.
  • FIG. 4B depicts the magnetic conditions when source 9 is connected to winding 7B, and the directions of magnetic flux flow are opposite that of FIG. 4A.
  • FIG. 40 An operate condition of the two switches is attained in a manner similar to that described above in MG. 1, the only difference being that in the embodiment of FIG. 3 a pair of switches it and 2 is closed while in PEG. 1 only one switch is closed.
  • the magnetic condition of the embodiment is depicted in FIG. 40. There are two magnetic return paths, one for each switch and are shown by dotted lines and closed arrows 23.
  • FIG. 5 depicts an embodiment similar to that disclosed in FIG. 3 with the exception that the windings 6A, 6B and 7A, 7B are disposed in a difierent manner.
  • Winding 6B is positioned at an acute angle X with respect to a line Y extending through the contact areas of switches 1 and 2.
  • winding '73 makes an acute angle X with respect to that line Y.
  • the angles X and X can be, for example, 45.
  • the windings dB and 73 can be of more than the depicted one turn, as long as the angular positions with respect to the mentioned line Y are maintained and a dominant flux is generated by these windings, as discussed above.
  • the various elements of FIG. 5 are numbered in the same manner as that of the embodiment of FIG. 3.
  • FIGS. 6A and 6B are identical to respective FIGS. 4A and 413.
  • FIG. 6C is similar to FIG. 4C with the excep- 8 tion that closed arrow 12-1 represents a magnetic ilux within shunt 3 during the operate condition.
  • a released condition of the embodiment of FIG. 5 is attained in the manner similar to that above described for the embodiments of FIG. 1 and FIG. 3, that is, by energizing only one of the two sets of windings 7A, 7B and 6A, 6B.
  • the remanent states of the reeds of both switches l and 2 and the magnetic flux generated in shunt 3 and the resulting magnetic flux flow are similar to that described for the embodiment of FIG. 3.
  • the magnetic flux through shunt 3 as represented by arrow 21 will be in a direction slightly oiiset from the contact areas.
  • the flux represented by arrow 21 will be offset 45 from the mentioned line Y between the contact areas of the switches 1 and 2. This does not affect in. any substantial degree the described manner of causing release of the device.
  • the operate condition is, however, attained in a diiferent manner.
  • both sets of indings 7A, 7B and (2A, 6B are concurrently energized.
  • these two fluxes are vectorially added.
  • the resultant flux is in a direction such as shown by arrow 21 making an angle X with winding 78 in FIG. 5 and pointing to the left in FIG. 6C.
  • angle X will be 45, i.e., at an angle of from the line Y.
  • This direction is substantially diverted from the contact ends of the reeds of switches 1 and 2.
  • the fluxes generated by windings 6B and 7B in shunt 3 do not substantially influence or overcome the fluxes generated by windings 6A and 7A.
  • the remanences of the reeds of both switches It and 2 are set in the directions as depicted by closed arrows 20 20 29 and 2% pointing up in FIG. 6C. Magnetic fluxes are caused to fiow through the reeds of both switches thereby causing their closure. The fluxes then return through the air as shown by dotted lines and arrows 23.
  • a magnetically controlled switching device comprising at least a pair of contact members each having a contact surface adjacent to a mating contact surface of the other said member; biasing means individual to said members for causing a first flux to flow through said members; in the same direction; fiuid guide means for directing a second magnetic flux to said adjacent contact surfaces; first control means magnetically coupled to said guide means and effective when only one of said biasing means is energized for causing a second flux to flow along said guide and through said members in opposite directions to overcome said first flux and to inhibit the mating of said contact surfaces; and second control means magnetically coupled to said guide means and effective when both said biasing means are concurrently energized for causing a third flux which in vectorial addition with said second flux produces substantially zero flux flow along said guide to said adjacent contact surfaces enabling said surfaces to mate under control of said first flux.
  • biasing means comprises a pair of first windings, one about each respective member.
  • said second control means comprises another second winding disposed about said shunt and wherein means are provided for connecting each of said second windings to a respective one of said first windings, defining thereby two sets of windings, each set comprising a first and a second winding.
  • said members are of remanently magnetic material and wherein further is provided a pair of sources of similar polarity current and means for connecting each of said sources to a respective one of said sets of windings whereby concurrent energization by said sources of both of said sets of windings causes the remanent magnetization states of said members to be in similar directions to eifect mating of said contact surfaces and whereby energization by said sources of only one of said sets of windings causes said second flux to establish the remanent magnetization states of said members in opposite directions inhibiting contact mating.
  • a switching device comprising (1) A pair of magnetizable contact elements supported in operative relationship to each other,
  • control means inductively coupled to said shunt means and to said elements and electrically connected to both said first means and effective when only one of said first means is energized for driving a dominant second flux from said shunt means and through both said elements to overcome said first flux to inhibit the operation of said elements and effective when both said first means are concurrently energized for diverting said dominant second fiux from said elements to enable said first flux to efiect the operation of said elements.
  • said first means comprises a pair of first energizable windings each inductively coupled to an associated element and wherein said control means comprises a pair of second energizable windings each electrically connected to a corresponding one of said first windings and inductively coupled to said shunt means whereby energization of only one corresponding set of first and second windings causes a first fiux to flow in its associated element and causes a more dominant second flux to flow in said shunt means to overcome said first fiux and to effect the release of said elements and whereby concurrent energization of both sets of corresponding first and second windings causes said first fiux to flow through both elements and said second fiux in said shunt means to be diverted from said elements to effect the operation of said elements.
  • a magnetically controlled switching device comprising (l) a pair of magnetic contact members supported so that one end of a first contact member defines a magnetic air gap with one end of the second contact member;
  • first means energizable to generate in said first contact member a first magnetic flux poled in a first direction with respect to said air gap and of a first magnitude
  • third means energizable to generate in said shunt member a third magnetic flux poled in said first direction with respect to said air gap and of a second magnitude greater than said first magnitude
  • fourth means energizable to generate in said'shunt member a fourth magnetic flux poled in said opposite direction with respect to said air gap and of said second magnitude;
  • first and second and third and fourth means comprise windings magnetically linking said contact members and said shunt member
  • said shunt member comprises an elongated magnetic shunt having one end thereof adjacent to said contact surfaces.
  • a magnetically controlled switching device comprising a pair of contacts, a pair of remanent magnetic members for controlling said contacts, a shunt magnetic member positioned in shunt to said magnetic members, first winding means including a first coil on said shunt member and a second coil series connected thereto and on one of said remanent members, and second winding means including a first coil on said shunt member and a second coil series connected thereto and on the other of said remanent members, said first coils being of more turns than said second coils and arranged to prevent any substantial flux from said shunt member passing through said remanent members on concurrent energization of said first and said second winding means.
  • a magnetically controlled switching device comprising a pair of contact members each having a contact surface adjacent to a mating contact surface on the other said member, biasing means individual to said members for selectively magnetizing said members in the same direction, fiux guide means for directing flux fiow to said ada a 15.
  • first control winding means having an axis in angular disposition to said guide means and effective When one of said biasing means is energized for causing a second flux toflow along said guide means through both said contact members in opposite directions to inhibit the mating of said contact surfaces, and second control winding means magnetically coupled to said flux guide having an axis in angular disposition to said guide means and effective when concurrently energized with said first control winding means and the other of said biasing means for generating a third flux which in vectorial addition with said second flux produces a component of substantially zero flux along said guide means and another component of flux perpendicular to said guide means and diverted from said contact surfaces causing said contact surfaces to mate.
  • a magnetically controlled switching device comprising a pair of contact members each having a contact surface adjacent to a mating contact surface of the other said member and each having an axis, biasing means individual to said members for causing a first flux to flow through said members in the same direction, flux guide means having an axis in angular disposition to said member axes for directing flux flow to said adjacent contact surfaces, a first control winding encompassing said guide and having an axis in angular disposition to said guide axis and effective when one of said biasing means is energized for causing a component of a second flux to flow along said guide axis and through both said contact members in opposite directions to inhibit the mating of said contact surfaces, and a second control winding encompassing said guide and having an axis in angular disposition to said guide axis and said first control winding axis and effective when energized concurrently with the other 12 said biasing means and said first control winding for generating a third flux which in vectorial addition with said second flux produces a component of
  • a pair of contact members each having a contact surface adjacent to a mating contact surface of the other said member; biasing means individual to said members for selectively magnetizing said members in the same direction; flux guide means for directing flux flow to said adjacent contact surfaces; first control winding means having an axis and effective when energized for causing a second flux to flow along said guide and through both said contact members in opposite directions to inhibit the mating of said surfaces, and second control winding means having an axis in angular disposition with respect to said first control Winding axis and effective when concurrently energized with said first control winding means and said biasing means for causing a third flux which in vectorial addition with said second flux produces a component of substantially zero flux along said guide and another component of flux remote from said contact surfaces causing said surfaces to mate.

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US206501A 1962-06-29 1962-06-29 Magnetically controlled switching devices Expired - Lifetime US3141079A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE634159D BE634159A (enrdf_load_stackoverflow) 1962-06-29
NL294328D NL294328A (enrdf_load_stackoverflow) 1962-06-29
GB1053387D GB1053387A (enrdf_load_stackoverflow) 1962-06-29
US206501A US3141079A (en) 1962-06-29 1962-06-29 Magnetically controlled switching devices
FR939340A FR1365619A (fr) 1962-06-29 1963-06-25 Dispositif de commutation commandé magnétiquement
DEW34806A DE1215258B (de) 1962-06-29 1963-06-29 Elektromagnetisch gesteuerte Schaltvorrichtung

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US206501A US3141079A (en) 1962-06-29 1962-06-29 Magnetically controlled switching devices

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US3141079A true US3141079A (en) 1964-07-14

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US (1) US3141079A (enrdf_load_stackoverflow)
BE (1) BE634159A (enrdf_load_stackoverflow)
DE (1) DE1215258B (enrdf_load_stackoverflow)
FR (1) FR1365619A (enrdf_load_stackoverflow)
GB (1) GB1053387A (enrdf_load_stackoverflow)
NL (1) NL294328A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215795A (en) * 1963-01-03 1965-11-02 Allen Bradley Co Reed switch control
US3314029A (en) * 1963-01-03 1967-04-11 Allen Bradley Co And type reed switch control

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002066A (en) * 1959-07-01 1961-09-26 Bell Telephone Labor Inc Magnetically controlled switching device
US3005072A (en) * 1959-10-22 1961-10-17 Bell Telephone Labor Inc Electrically controlled switching device
US3008020A (en) * 1959-10-19 1961-11-07 Bell Telephone Labor Inc Pulse operated reed switch and storage device
US3009998A (en) * 1957-09-20 1961-11-21 Siemens And Halske Ag Berlin A Relay comprising sealed-in contacts
US3056868A (en) * 1959-08-03 1962-10-02 Bell Telephone Labor Inc Switching device
US3075059A (en) * 1961-07-17 1963-01-22 Bell Telephone Labor Inc Switching device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009998A (en) * 1957-09-20 1961-11-21 Siemens And Halske Ag Berlin A Relay comprising sealed-in contacts
US3002066A (en) * 1959-07-01 1961-09-26 Bell Telephone Labor Inc Magnetically controlled switching device
US3056868A (en) * 1959-08-03 1962-10-02 Bell Telephone Labor Inc Switching device
US3008020A (en) * 1959-10-19 1961-11-07 Bell Telephone Labor Inc Pulse operated reed switch and storage device
US3005072A (en) * 1959-10-22 1961-10-17 Bell Telephone Labor Inc Electrically controlled switching device
US3075059A (en) * 1961-07-17 1963-01-22 Bell Telephone Labor Inc Switching device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215795A (en) * 1963-01-03 1965-11-02 Allen Bradley Co Reed switch control
US3314029A (en) * 1963-01-03 1967-04-11 Allen Bradley Co And type reed switch control

Also Published As

Publication number Publication date
DE1215258B (de) 1966-04-28
NL294328A (enrdf_load_stackoverflow) 1900-01-01
GB1053387A (enrdf_load_stackoverflow) 1900-01-01
BE634159A (enrdf_load_stackoverflow) 1900-01-01
FR1365619A (fr) 1964-07-03

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