Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
  • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
  • H01H89/08—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/04—Means for indicating condition of the switching device

Definitions

• the present invention relates to a remote control-type circuit breaker that relies on a bistable electromagnet device to hold a movable contact and an off position.
• the mechanism of this type of conventional circuit breaker uses a toggle mechanism to hold the handle and the movable contact on and off.
• the operating force required for the handle is maximized at the center of the handle stroke due to the spring action of the toggle mechanism. Therefore, when such a circuit or the handle of a breaker is driven by an electromagnet device for remote control, the suction force of the electromagnet device is reduced by the main air gap. Since it is inversely proportional to the square of the power, it is necessary to operate the load that maximizes the load in the center of the stroke, and therefore, does not increase the power of the electromagnet device.
• the disadvantage is that the size of the electromagnetic stone device must be increased or the exciting current of the coil must be increased.
• the conventional circuit breaker has two built-in * magnets for on-off and off-operation, which has the disadvantage of being inevitable in size.
• the purpose of the present invention is to reduce the load on the electromagnet device for remote connection and to reduce the size of the entire remote control.
• the purpose is to provide a troll type circuit breaker. That is, the invention is based on triplinks, latchlinks, Movement contact, operation 'In the interlocking of the link and handle, the trip link and latch link are each provided with a return spring. Latching is performed by the action of these springs, and the pin and holding of the movable contact supported by the latch link are connected to the handle.
• the special feature is that it relied on the holding power of a bistable polarized electromagnet for remote control.
• FIG. 1 A first embodiment of the invention is shown in FIG. 1 or FIG. First, the structure of one pole will be described, which detects the overcurrent and short-circuit current of the line and trips.
• _O PI Lines can be turned on, off, and reset by means of handles and remote control operation signals.
• the outer shell (shoulder body) A mainly consists of a thick body case 1, a middle case 2, a side case 5, and an upper cover 4
• the middle case 2 with the top plate 11a and the upright plate 1 1b that almost closes the lateral and upward openings of the thick case 1 is attached to the main case 1.
• The-side case 3 is placed on the outer surface of the middle case 2 and the connection holes 5 to 7 of the main case 1 and the side case 5 are passed through.
• Pin 8 Combined with the body.
• the upper cover 4 is made of an elastic plastic and has a top plate for the mounting walls 9, 10 and the middle case 2 at the upper end of the main body case 1 and the side case 5. ⁇ It is attached to both ends of 1a, and-terminal cover 12 extends outward from both ends. At the lower end of the shell A, a mounting groove 19 for mounting the circuit breaker to a distribution board or the like is formed by the main body case 1.
• the terminals mainly consist of main terminals 20 and 21 for the electric circuit, operation terminals 22 for the remote control operation signal and auxiliary terminals 25, and main terminals 20 and 21 is composed of the power supply terminal device [21] and the load terminal device (20).
• These terminal devices are mainly composed of terminal plates 24 and 25, washers with presser projections 20 and spring nuts 27 and square nuts 28 and 28 as shown in Fig. And terminal screw 29.
• Each of the terminal boards 24 and 25 has one side edge bent downward to form the hanging pieces 51 and 52, and each of the terminal devices 20 and 21 has a shell A. It is attached to the lower steps 15 and 10 on both sides of the.
• the terminal screw 57 connects to the upper piece of the U-shaped terminal frame 56. It is attached to the upper step 18 formed in the middle case 2. That is, a fixed slit 59 is formed in the step 18, five terminal frames 50 are inserted into the slit 59, and the step 1 is formed by the spring action of the terminal frame 5 ⁇ . It is clamped and fixed to 8.
• the auxiliary terminal 25 is provided in the upper step 17 on the load-side terminal device 20 side.
• the electric circuit between the main terminals 20 and 21 is mainly composed of a contact part 45, a plunger-type electromagnet device 44 and a pipe as shown in FIG. There are talls 45, which are arranged almost in a straight line between the main terminals 20 and 21.
• the contact portion 45 controls opening and closing of the electric circuit, and is composed of a movable contact 48 having a fixed contact 40 and a movable contact 47.
• a partition plate 50 is provided upright. The partition plate 50 divides the arc extinguishing chamber 51 and the operation electromagnetic stone storage chamber 52.
• a slit 55 is formed at the lower part of the storage room 52, and a copper wire 5 or a conductive plate is inserted into the slit 55, as shown in FIG.
• the fixed contact plate 55 and the terminal plate 25 are connected by welding.
• the movable contact 48 includes a movable contact plate 57, a contact frame 58, a contact pressure applying spring 59 and a movable contact 47 as shown in FIG. 12. And the contact frame 58 are connected by pin ⁇ 0 at the upper part, and as shown in FIGS. 5 and ⁇ , the contact plate 57 and the contact frame 5 are placed on the upper side of pin ⁇ 0.
• a contact pressure applying spring 59 is erected in a compressed state between the upper end portions 8. Due to the spring 59, the lower end of the contact frame 58 is elastically contacted with the intermediate portion of the contact plate 57 to be in a stable state.
• the movable contact 47 is fixed to the lower end of the movable contact plate 57, and a hole 62 for forced opening is formed above the movable contact 47.
• the pin ⁇ 5 is passed through the support hole ⁇ 1a above the hole ⁇ 2, and the pin ⁇ 3 is used to connect the pin ⁇ 4 to be described later.
• the movable contact 47 is opposed to the fixed contact 46 as shown in FIG.
• the bridge-type electromagnet device 4 4 detects short-circuit current. Therefore, as shown in FIG. 7, mainly the yoke 65, the coil ⁇ , and the coil cylinder 07 ⁇ The stationary core 08, the return spring ⁇ 9, the plunger 70, and the movable rod 71 are components.
• the yoke 0 5 consists of the U-shaped frame 72 and the plate 75, and the plate 75 engages its square hole 77 with the projection 7 ⁇ of the U-shaped frame 72. In other words, it is erected and fixed to the U-shaped frame 72.
• the yoke 5 is integrally formed with a frame 79 for holding a mechanism section 78 described later.
• the side plate 82 made of a conductive material such as copper or a copper alloy has its square hole 85 fitted with the projection 81 of the U-shaped frame 72 and caulked. It is erected so that it faces 0.
• the arc traveling plate 84 is bent and extended from the lower end of the contact plate 75, and the plunger type electromagnet device 44 is attached to the main body case 1.
• the arc running plate 84 is positioned on the lower surface of the support joint 1a so as to sandwich the support joint 1a.
• Two pins 87,88 constituting the machine section 78 are installed between the support holes 89,90 of the main body case 1 and the middle case 2 and these pins are formed.
• the frame 79 is held through the holes 91 and 92 of the force frame 79 and the frame 79 is held by the side of the middle case 2.
• the abutting pieces 82 abut against each other, and the postures of the yoke 05 and the frame 79 are determined by these.
• Fixed iron core ⁇ 8 has through hole ⁇ 8 a
• the movable rod 71 is fitted into the hole 95 of the U-shaped frame 72 from the inside and fixed by caulking.
• the movable rod 71 is longer than the fixed iron core and slides into the through hole 08a. Permeated by movement.
• the coil cylinder 07 has a small-diameter portion 94 at one end.
• the small-diameter portion 94 is fitted into a mounting hole 95 formed in the contact plate 75, and the other end is a fixed iron core ⁇ 8. It is attached to and installed.
• the plunger 70 is fitted into the coil cylinder 07 with a slide, and a forced opening rod 96 protruding from one end of the plunger 70 is fixed to the coil cylinder 67.
• the electromagnet device 44 can be operated by the spring force of the return spring 69 only when the rated current of the coil ⁇ 6 and the overcurrent just flow.
• the parameter 45 is bent into a substantially L-shape consisting of a horizontal piece and an oblique piece, and a gap is provided at the upper end of the oblique piece.
• the adjusting screw 100 is screwed through, and a caulking hole (not shown) is formed in the horizontal piece 98 to be caulked to the lower end of the side plate 82.
• This no-measurement hole 45 and the above coil ⁇ are made of a flexible copper stranded wire 101 OM? IV 'WIPO Is connected by welding. Then, the side plate 82 and the movable contact plate 57 are welded to each other by a flexible copper wire 102.
• the electric circuit is connected in order from the power supply side terminal device (2) to the connecting copper stranded wire 50, fixed contact plate 57, copper stranded wire 102, frame side piece 82, It is communicated to the load terminal device (20) via the No. 45, copper stranded wire 101, and copper wire 6 ⁇ .
• the opening / closing is controlled by the contact point 4 ⁇ .
• the arc extinguishing chamber 51 is extinguished by causing the arc generated at the contact point 4 ⁇ when the short-circuit is interrupted to be quickly separated from the force between the contacts 4 ⁇ and 47.
• the main components are the exhaust port 105, the arc travel plates 84, 104, the de-ion grid 105, and the exhaust plate 10 ⁇ . You.
• the de-ion grid 105 enters the de-ion grid 105, is separated and cooled by the de-ion grid 105, and extinguishes the arc, and the gas is discharged from the exhaust plate.
• the air is exhausted from the exhaust port 105 through the 100mm.
• the movable contact 45 is turned on, off, tripped, and turned off.
• This mechanism consists of a trip link 109, a latch link 4, an operation link 110, and a handpiece as shown in Figs. It is composed of 1 1 1 and the operation electromagnetic device 1 1 2.
• Trip link 109 a trip link 109, a latch link 4, an operation link 110, and a handpiece as shown in Figs. It is composed of 1 1 1 and the operation electromagnetic device 1 1 2.
• 1 Q 9 consists of the vertical piece 1 15, the side piece 1 14 and the ear piece 1 15 as shown in Fig. 7, and the axial hole 1 1 in the side piece 1 1 4 and the ear piece 1 15.
• a hole is formed, and the pins 87 are passed through the holes 91 of the side piece 79 and the frame side piece 82 through the holes 91 at the end of the side piece 79 and the frame side piece 82.
• the support holes 89 formed in the case 1 and the middle case 2 are pivotally supported.
• the lower end of 115 is located in front of the movable rod 71 of the plunger-type electromagnet device 44 as shown in Fig. 5, and the upper end is a gap of the digital 45. -Position in front of the adjustment screw 100.
• the side piece 1 14 rises obliquely upward, forms a downward-facing hook 1 19 on the upper side of the upper end thereof, and forms an upper end ⁇ on the circular arc surface 120. ing .
• a screw coil spring 121 for return is fitted and supported on the pin 87 of the trip link 109, and one end SS1221a of the screw coil spring is mounted on the side.
• the other end 1 2 1b is locked in contact with the upper piece of the shroud 5 at the oblique lower side of the piece 1 14. Therefore, the trip link 109 is urged to rotate in the counterclockwise direction in FIG. 5, and the lower end of the standing piece 115 contacts the movable rod 71 to fix the fixed core. ⁇ It is designed to lock to the pro
• the latch link 04 has a pair of slender side pieces 122, 125 which are connected to each other with a latch bridge piece 124, and the hole 125 is open. Through the holes 92 of the frame 79 and the frame 82, and furthermore, the both ends are pivoted to the support holes 90 of the main case 1 and the middle case 2. 888. Screw coil spring for return to pin 8 8 1 2 7
• OMPI Is supported.
• One end of the coil spring 127 is locked to the upper piece of the yoke ⁇ 5, and the other end is locked to the lower edge of the side pieces 122, 125.
• the spring link urges the latch link ⁇ 4 in a clockwise direction in FIG. 7 so that the lower end is locked to the upper edge of the contact plate 75. It is being done.
• the upper end of the latch link 64 and the upper end of the trip link 109 cross each other, and the lower latch 1 of the bridging piece 124 is formed. 2 8 force s
• the trip link 1109 is located above the hook 1119 in the direction of rotation. For this reason, the latch link ⁇ 4 is screwed into the spring force of the coil spring 1 27 and turned to the left. Slide the arc surface 120 of the top link 109 and rotate the trip link rightward against the spring action of the trip link. And latch it to the latch section 1 2 8.
• the trip link 109 and the latch link 04 are in a reset state. Then, the posture of the trip link 109 is set to the vertical position, and the bidirectional adjustment screw 110 is used to adjust the position and the movable bar 71 are detected. It becomes. Then, when the trip link 109 operates, the latch link # 4 is released and the trip state is established. Further, a pin 05 supporting the movable contact 45 is axially supported by a hole 125 at the lower end of the latch link # 4.
• the nozzles 1 and 1 1 are made of an insulating material, and the middle groove 2 of the top plate 11 a of the middle case 2 and the upper cover and the nozzle 4 It is inserted into the hole 1505b, and is rotated by the shaft 151 between the holes 1 51a of the main body case 1 and the middle case 2. It is.
• This handle 111 extends an arc-shaped on-display panel 111b, and A connecting hole 1555 is formed at the lower end of the handle 1111, and an arm 1554 extends further to the right in a substantially horizontal direction.
• a hole 15 5 (Fig. 8) is formed. In this way, when the knob 1-1 is in the ON position, the handle hole 150b is turned on, and the character "ON" on the display panel 11b is read. At the position of the hand-off 1 1 1 force-off, the character "-" is read from the hole hole-1 ⁇ 0b. It is possible to confirm on, off and on.
• the operation link 110 is formed by bending both sides of the H-shaped plate in the same direction, and consists of 15 1 on both sides and 15 17 on the bridging piece. One end of the 15 ⁇ on both sides Is connected to the connecting hole 155 by the pivot pin 158, and the other end is connected to the support pin ⁇ 0 supporting the movable contact plate 5-7 and the contact frame 58. It is.
• FIG. 9 the position of the right-hand and left-hand tilts 11 (right-turning state) is in the on-state, and thus, the operation is performed by the right-turning operation.
• the child 48 rotates about the pin ⁇ 5, and the movable contact 47 comes into contact with the fixed contact 4 ⁇ .
• the handle 1 11 is pushed to a fixed position, the movable contact 47 is in contact with the fixed contact 46, so that the movable contact ⁇ 57 is now supported by the pin ⁇ 0.
• the contact ⁇ ⁇ is applied, and the contact ⁇ ⁇ is applied because the contact pressure applying spring 59 is compressed. In this way, the contact and the part 45 are turned on, and the state is maintained by the operation electromagnet device 112 described later.
• Fig. 10 shows the handle in the off state (turned to the left: 1 1 1).
• the contactor 48 rotates about the pivot bin ⁇ 5 of the latch link 64 as a fulcrum, and the operation link 1 1 1 is turned to the left by turning the handle 1 1 1 to the left. 0 Force is applied and the upper end of the movable contact 48 is pulled by the operation link 110, so that the movable contact 47 separates from the fixed contact 4 ⁇ and opens.
• the latch link # 4 is reset after the trip operation. That is, the state of the trip free is released from the latch link ⁇ 4 force s, the trip link 909 force and released by the spring 727.
• the latch link ⁇ 4 is in the state shown in FIGS. 11 and 2 because it pivots on the fulcrum of the handle 1 2 ⁇ .
• the trip display device 159 displays the trip display when the trip operation is performed due to the abnormal current.
• the display line is as shown in FIG. 159a and interlocking link 159b.
• the display link 1559a has a lower end pivotally supported by the handle shaft 151, and an upper end with an arc-shaped trip display plate 1559c ("TRIP" on the surface). Is displayed).
• the interlocking link 1559b has both ends bent in the same direction to form an axis, and is connected to the display link 1559a and the upper end of the latch link ⁇ 4. Yes.
• This trip display device 1559 has a handle 1 when latch latch ⁇ 4 is in a reset state as shown in FIGS. 14 and 10. 1 Off position force
• the operating electromagnet device 1 1 2 is attached to the storage section 52 of the main body case 1 by squeezing the side from which the plunger 140 protrudes from the upper side, and the plunger 1
• the upper end of 40 is connected to the connection hole 1555 of the handle 11 through a U-shaped pin 14 1.
• the electromagnet device 112 is of a bistable polarized type and has a square hole 144 and upper and lower flanges 144, 140 as shown in FIG.
• a pair of permanent magnets 14 9 and [magnetic poles are indicated by N and S] which are attracted to the outer surface of the magnet, and a pair of outer yokes which are attracted to the outside of the permanent magnet 14 9
• the flanges 151, 152 are provided in the plunger 140, which penetrates the square hole 144 of the coil frame 144, and these are the inner yokes It is located between 1 48 and the outer yoke 150.
• a connecting portion 1555 projects, and at the upper end of the connecting portion 155, an engagement hole 155a for bearing the U-shaped pin 1441.
• a buffer plate 154 is interposed between the lower ends of the outer yoke 150 to buffer the movement of the bridger 140.
• the magnetic poles N and S of the permanent magnet 149 are opposite to each other as shown in Fig. 9, so the upper and lower ends of the inner yoke 144 are connected to each other.
• 8b indicates the magnetic pole S force, and-indicates the magnetic pole ⁇ at the upper and lower ends of the outer yoke 150, and they are relatively opposed.
• the applied force s' Planar 140, both ends 15 1 and 15 2 are in the adsorbed state even if they are at any position in Fig. 9 and Fig. 10 It is latched.
• a return spring 15 5 is compressed between the coil frame 14 5 and the arm 15 4 of the handle 11 11, and the spring force of the return spring 15
• the handle 11 is turned off by manual operation or by the electromagnetic device 1 12, the spring action is performed, and the contacts 4 6, 4 are weaker than the adsorption force.
• the gap between the seven is being vigorously opened.
• the electromagnet device 1 1 2 is left unpowered, and the handle 1 1 1 is turned on or off-due to its force when it is manually operated-
• the plunger 14 ' ⁇ moves up and down, and as described above, the upper and lower positions of the plunger 140 are determined by the magnetic force of the permanent magnets 149 as described above.
• f OMPI These parts are arranged in a recess 1559 formed on the side of the middle case 2 between the middle case 2 and the side case 3.
• a U-shaped fixed contact plate 1 ⁇ 0 is fitted to a fixed projection 16 and a pair of switching contact plates 102, 1 ⁇ 3 is supported by a fixed projection 1 ⁇ 1. It is supported by the slits 165a and 165 in Fig. 4 and is in contact with the upper and lower surfaces of the fixed contact plate 100.
• an arc-shaped 1 ⁇ is formed between the fixed projection 1 ⁇ 1 and the supporting projection 1 ⁇ 4, and a switching contact drive bar integrally formed on the side of the arm 1554 of the hand hold 111.
• ⁇ 16 7 passes through the arc hole 16 ⁇ and is located between the switching contact plates 1 ⁇ 2 and 1 ⁇ 5, and the lower side depends on the ON position of the handle 1 11 (Fig. 9).
• the switching contact plates 1-5 are opened from the fixed contact plate 1-0, and the upper switching contact plate 102 is opened by the off position of the handle 111 (Fig. 10). You. Then, as shown in Fig. 14, the ends of the coil 144 are connected to the fixed contact plate 160 and one operation terminal 22 as shown in Fig.
• Diodes 156 and 157 are connected to terminals 2 and 1/3 so that they have opposite polarities, and diodes 156 and 157 are connected to the remaining operation terminals 22.
• reference numeral 167 denotes an AC power supply
• reference numeral 168 denotes an external switch. In this way, for example, when the external switching switches 1 to 8 are turned on, a unidirectional current flows through the diode 150 to the coil 144. The flow 1402 moves from the upper position in FIG. 10 to the lower position in FIG. 9 and is held.
• the operation terminals 22 for connecting the diodes 150 and 157 are shared as shown in Fig.
• a pair of diodes 109 and 170 may be provided in the external switching switches 1-8 as well, and the operating principle is the same as that of the 5-wire system. It goes without saying that the electromagnet device 112 can be driven by applying a DC voltage.
• the trip test button 17 1 in the figure is for arbitrarily testing the trip operation of the mechanism section 78, and when this is turned, the trip test button 17 1 is turned. Since the side pieces 1 1 4 of the trip link 109 are pushed at the lower end 17 1 a, the trip link 109 rotates rightward. The engagement with latch link ⁇ 4 is released, and the trip operation is performed.
• the embodiment of the present invention shows the structure of one pole of a circuit breaker, if a multi-pole one is required, a known method is used.
• a multi-pole circuit breaker can be realized by arranging objects of substantially the same structure in parallel.
• the coils 144 of each pole of the operating electromagnet device 1 1 2 are connected in series with each other, the operating terminal 22 is only one pole, and the operating signal is sent to the operating terminal 22.
• the electromagnet devices 1 1 and 2 can operate at the same time and perform the same operation.
• the off state is shown in Fig. 15 (b) and Fig. 10.
• the latch link 4 is latched, the node 11 1 is turned left, and accordingly, the movable contact 48 is in the open state.
• the bracket 140 of the operation electromagnet mounting 112 is moved to the upper position and held.
• the operational relationship and the operation mode are the same as those in the ON state.
• the latch link ⁇ 4 rotates to the right, and the latch section 128 Is latched on the hook portion 119 of the trip link 109.
• the signal may be applied to the operation terminals 15 and 1 ⁇ and the electromagnetic device 1 12 may be operated to move the handle 1 11 to the off position.
• the short-circuit trip is shown in Fig. 13 (and Fig. 12).
• the magnetic stone device 4 4 Is sucked into the fixed iron core ⁇ 8.
• the movable rod 71 is pushed out, and the lower end of the trip link 109 is pushed.
• the latch link # 4 is released, and the movable contact 48 opens as described above.
• O PI It rotates in the direction of compression and opens.
• the reset operation is the same as described above.
• the display link 1339a rotates when the latch link ⁇ 4 force s ' rotates, and the trip display board 1339c turns on.
• Trip display is performed on the upper surface of the display panel 1 1 1b.
• the remote control type circuit breaker and breaker of the present invention are provided with return springs for the trip link and the latch link, respectively. And rely on a dual-stable type polarized electromagnet device that pivots the handle to turn on and off the movable contact supported by the latch link.
• the size of the electromagnet can be reduced and power consumption can be reduced as compared with the conventional one, and since only one electromagnet is required, it is possible to greatly reduce the size and size of the breaker.
• Fig. 1 is a plan view of the first embodiment of the present invention
• Fig. 2 is a side view thereof
• Fig. S is a front view
• Fig. 4 is a rear view
• Fig. 5 is an outer case.
• Fig. 7 is an exploded perspective view
• Fig. 7 is an exploded perspective view of a movable contact, an electromagnet device, and a mechanism.
• Fig. 8 is an exploded perspective view of a bi-stable type polarized electromagnet device and a handle.
• Fig. 9 is an exploded perspective view
• Fig. 9 is a cross-sectional view in an on state
• Fig. 10 is a cross-sectional view in an off state
• Fig. 11 is a pi-metal.
• Fig. 9 is an exploded perspective view
• Fig. 9 is a cross-sectional view in an on state
• Fig. 10 is a cross-sectional view in an off state
• Fig. 11 is
• FIG. 1 2 is a cross-sectional view of a trip state by an electromagnetic stone device
• Fig. 13 is an operation diagram
• Fig. 14 is a 3-wire drive circuit diagram of a bistable type polarized electromagnet device
• Figure 5 is a two-wire drive circuit diagram.

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• Breakers (AREA)
• Slide Switches (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

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ID=11848454

Family Applications (1)

Country Status (6)

Cited By (3)

Families Citing this family (56)

Citations (2)

Family Cites Families (12)

• 1982
  • 1982-01-29 JP JP57013983A patent/JPS58131636A/ja active Granted
• 1983
  • 1983-01-29 EP EP83900440A patent/EP0103022B1/fr not_active Expired
  • 1983-01-29 GB GB08322699A patent/GB2129220B/en not_active Expired
  • 1983-01-29 DE DE19833328926 patent/DE3328926C2/de not_active Expired
  • 1983-01-29 WO PCT/JP1983/000026 patent/WO1983002680A1/ja active IP Right Grant
  • 1983-09-29 US US06/551,989 patent/US4529951A/en not_active Ceased

Patent Citations (2)

Non-Patent Citations (1)

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