Патент USA US3056917код для вставки
United States Patent O?tice 1 3,056,907 Raphael J. Costanzo, Bridgeport, Conn, assignor to Har TOUCH CONTRULLED CIRCUIT vey Hubbell, Incorporated, Bridgeport, Conn, a cor poration of Connecticut Filed Oct. 16, 1958, Ser. No. 767,661 3 Claims. (Cl. 317-149) This invention relates to a touch-controlled circuit, that is, a circuit in which the operator may control the operation of the circuit by merely touching one or more elements, without requiring the throwing of a switch or the like, and has for an object to provide an improved and simpli?ed arrangement for controlling a load circuit and one which may be readily adjusted for more e?fective operation under different conditions, and one which will provide more positive action under a greater magnitude of changing conditions. Another object is to provide a touch-controlled circuit, including a relay controlling the load circuit in which improved means is provided for operating the relay which will effect a more positive and reliable operation or" this relay. 3,056,907 Patented Oct. 2, 1962 2 or closed, it will shift it to the other position. Thus, if the switch 13 is open when the coil 18 is energized it will close this switch and it will remain closed and there fore put the lights 11 on or operate the load, and it will remain closed until the coil or winding 18 is again energized, when the switch 13 will open and remain open to put the lights out or stop operation of the load until the coil is again energized, and so on. The operation of the switch is effected by operation of the armature 19 10 of the relay through the core 20 energized by the Wind ing 18 operating through suitable latch mechanism 21, which as indicated above, on energization of winding 18 will shift the movable contact of the switch 13 from either the closed to the open position or vice versa, de pending on its position when the coil or winding 18 is energized. Connected across this operative coil or winding 18 of the relay is a recti?er or diode 22 in series with a resistor 23. Recti?er 22 is preferably a silicon recti?er, as this has been found to be more reliable in operation in this combination and provide more effective and satisfactory results. The operative coil 18 of the relay is connected in series with the AC. supply 10 and the Another object is to provide a control of this type cathode and anode of a cold cathode electric discharge which has a high degree of safety and provides a system 25 tube such, for example, as a thyratron 24;. The grid or which lends itself extremely well to use in explosion control electrode 25 of this tube is connected through a proof areas, and makes it possible to eliminate the use high resistance 26, preferably a high adjustable resist— of all the bulky and complicated switches in sealed en ance, such, for example, as a potentiometer, with a touch closures now presently on the market to protect against element or area 27 through the lead connection 28, the these conditions. 30 resistance 26 being thus in series with the grid and With the foregoing and other objects in view, I have devised the construction illustrated in the accompanying drawing forming a part of this speci?cation. It is, touch element or area. This touch element as shown in FIG. 1 may be a substantially rectangular plate, or such a rectangular plate may be elongated to the form of a ?at however, to be understood the invention is not limited tape or strip 29, or this touch element or area could to the speci?c details of construction and arrangement 35 comprise two of these tapes or strips 29‘ and 30 separated shown, but may embody various changes and modii cations within the scope of the invention. In this drawing: a short distance so that they are insulated from each house lighting for a room or the like, in which the together but insulated from each other the same as in other but are placed side by side and closely adjacent. In this arrangement one of these strips, in the present FIG. 1 is a diagrammatic view of a touch circuit em case the strip 29, is connected to the grid 25, while the bodying this invention; 40 other tape or strip 30 is gounded, as indicated at 31; FIGS. 2, 3 and 4 are plan views of diiierent types of or, if preferred, the two strips or tapes 32 and 33 could touch elements which may be employed in this circuit; be arranged in the folded arrangement of FIG. 4, of FIG. 5 is a section of the preferred type of latching the size of a rectangular plate, the element 32 corre type relay which may be used in this circuit, showing sponding to the tape or strip 29 and the element 33 the load control switch in the open position, and 45 corresponding to the tape or strip‘ ‘30, the element 32 FIG. 6 is a similar section showing the control switch being connected to the grid 25 by the lead 28 and the closed. element 33 being grounded at 34. Each element as The drawing (FIG. 1) indicates the control for a load shown comprises branches 35 and 36 respectively ar circuit such, for example, as a lighting circuit, as in ranged in alternate arrangement side by side and close operator by merely touching a plate or strip of metal FIG. 3. may put the lights on or OE. With the latching type The operation is as follows: relay for controlling the load circuit, if the lights are The electric discharge device or tube 24 is so designed on, then he can put them 0E by touching this plate or that it will not ?re under ordinary conditions with the strip, and if the lights are off he can put them on by 55 alternating current voltage supplied from the supply 10. merely touching this plate or strip. It will, however, That is, the potential supplied to the cathode and anode be understood that this touch circuit is not limited for or plate of this tube by a leakage from the cathode builds use for controlling a lighting circuit, but may be used for other applications where a touch control may be up a negative voltage or potential on the grid 25 which prevents the tube from ?ring under ordinary conditions. desired, although it is particularly adapted and e?ective 60 If the operator touches one of the touch elements, that is, either the plate 27, elongated plate or strip 29, the for use in controlling a lighting circuit. The circuit as shown in FIG. 1 includes means for connecting it to the usual A.C. supply indicated at 10, two strips 29 and 39, or the two elements 32 and 33, depending on which type of touch element is used, and which may be the usual 110 to 115 volt circuit used for connected to the grid 25, this discharges the grid 25 house lighting systems. The load indicated by the circle 65 or makes it more positive and reduces its negative volt 11 may be one or more lamps controlled by a mechanical age below the ?ring voltage of the tube, and it will ?re, latching relay 12 including a control switch 13 for con energizing the coil 18 of the relay 12, and will operate trolling the circuit represented by the conductor con the switch 13. As indicated above, instead of the touch nections 14 and 15 connected to the leads 16 and 17 element being a relatively small plate 27, this plate may from the AC. supply 10. By “latching relay” is meant 70 be elongated into a narrow strip or tape 29 extending a relay in which, when the operative coil or winding 18 around the moulding, for example, in a room; or for of the relay is energized When‘the switch 13 is either open long strips, two or more may be used close together, as 3,056,907 3 the possibility of a skip operation in the latching relay shown in FIG. 3, but in this case one of them should be grounded for more reliable operation, but they are so narrow and arranged so close together that it is prac tically impossible for the operator to touch one without and gives a more uniform contact operation. In other words, it increases the length of time of the unidirec tional pulse which results in more positive action. It does this because, as the grid is triggered or allowed touching the other, and that, of course, grounds the grid 25 of the tube 24, which causes it to ?re and operate the relay. The same is true of the folded-up arrange ment of the contact strips as shown in FIG. 4. Other types of recti?ers or diodes 22. could be used, but the silicon recti?er is preferred as it has better op erating characteristics and will carry larger current surges for comparative size. This recti?er is used acoss the coil or winding 18v because it causes the current to per sist longer when the tube 24 is ?red, preventing chatter or continuous off and on operation of the relay, and 15 to become more positive, and allows the electrons to flow from the cathode to the plate, this initial pulse does not have a wave form which will consistently trig ger a latching relay. By the insertion of a diode across the relay, a pure unidirectional pulse now becomes ap parent. This is due to the low forward current-carrying characteristics of the diode and its extremely high re verse current-carrying ability plus its high peak inverse voltage characteristics. . As above suggested, the use of this diode and resistor for bypassing the operative winding of a relay is not thus persists long enough to operate the relay satisfac torily. The potentiometer or the adjustable resistance limited to use in latching type relays, as it could be used 26 between the grid and the touch element adds a sui‘l ciently high resistance so there is no danger of injurious voltage on the touch element, and it also permits ad justment of the resistance to stabilize the different touch elements used in different set-ups, or to compensate or for counting or sorting operations by use in conjunction with conventional relays where such operation is desired. The signi?cant points or improvements in the present purpose or set-up are the diode connected across the op erative coil of the relay, the varying resistor placed be— tween the grid and the touch area (this, by the way, effect the most effective- operation under varying condi tions encountered in different applications. By this ad being very important in this combination), and also the justable resistor the touch strips and the controls can 25 improved means of accomplishing the operation of the touch area by connecting one side to the grid through be arranged to control the ?ring of the tube, and there fore operation of the relay, to permit operation by touch this resistor and one side to the ground, and therefore at any one point or location along the strip or strips, grounding the grid by the operator touching the two by increasing or decreasing the resistance from the grid parts of the split area. to the touch area. The characteristics of the various elements will of course be determined for the conditions or set-ups in 30 By using the variable resistor between the grid and the touch area it is possible to control Varying lengths of touch or control areas. As suggested above, a resistor of the ?xed or variable type may be used, the variable type being used where it is desired to vary or control the ance, and the resistor or potentiometer 26 could be from 35 length, width or distance of the touch areas, but if the 5 to 10 megohms, or it could be a ?xed resistor of the length of the touch area has been predetermined for proper characteristics employed after the proper or re the given set-up or application involved, then a ?xed quired resistance has been determined for the set-up or resistor of the proper value and designed for this par conditions in which it is installed. This could be what ticular length can be used to prevent the possibility of might be called an adjustable or variable ?xed resistor. 40 anyone changing the resistance after the installation has volved. Thus, for example, in an ordinary house light ing system the relay 12 could be of 1380‘ ohms resist That is, instead of having the resistor itself adjustable to determine the proper amount for a given touch ?eld, a series of different ?xed resistors of different values may be tried until the proper one for the ?eld is indi cated. This would prevent someone, as a child, for instance, from changing the proper resistance in any given set-up after it had been determined, and thus in terfering with the proper functioning of the installation involved. been made, and thus interfere with proper functioning of the installation involved. This, however, is in effect adjustable resistor application. As previously suggested, this control is well adapted for use in explosive proof areas, as the touch area or ele ments may be within this area and there is no arcing or signi?cant voltage to cause explosive reaction, and the relay may be located in any remote location outside the explosive proof area. By varying the resistance between the grid and the 50 Having thus set forth the nature of my invention, I touch area it is possible to control the length of such claim: area that will ‘be most effective for any given set-up or 1. In a touch controlled circuit, a cold cathode elec tric discharge tube including a cathode, an anode and a installation. The touch area can be so constructed as to be a solid length, a split length or a laminated length, control grid, means for connecting the cathode and with one split area connected to ground. This enables ' anode "to an alternating current supply, a load control the obtaining of more positive action under a greater ' relay including an operative winding connected in series magnitude of changing conditions. with the said supply, the cathode and the anode, a recti By use of the recti?er across the coil of the mechanical latching relay it is possible to maintain a much more ?er connected across said winding, a touch element com prising a pair of separated conductors placed side by side and closely adjacent whereby both may be simultaneously stable unidirectional pulse, which gives more positive 60 control. This is accomplished with this arrangement touched by a single ?nger of a user, means connecting by using only three components. Also by extending the one of said conductors to the grid, and means ground tape or touch area around a room or predetermined area ing the other conductor, the discharge tube having char it makes it possible to obtain in?nite switchings along acteristics whereby it will remain non-conductive under the length of the tape. Also, due to the minute po 65 the voltage of the source of alternating current until tential which is on the touch area, this type of system the charge on the control grid is increased positively lends itself extremely well for use in explosion-proof by grounding the touch element conductor connected areas, thus eliminating the use of all the bulky and com therewith and then will ?re with a pulse discharge through plicated switches in sealed enclosures now presently on the relay winding and recti?er. the market for use to protect against these conditions. 70 2. In a touch controlled circuit, a cold cathode elec This touch area can be a length of wire, metallic tapes, tric discharge tube including a cathode, an anode and a or any wire or tape of conducting material, such, for control grid, means for connecting the cathode and anode example, as copper or aluminum or suitable metal al to an alternating current supply, a load control relay in—. loys. This system using the recti?er and resistor across cluding an operative winding connected in series with the operative coil or winding of the relay eliminates 75 the said supply, the cathode and the anode, a recti?er 8,056,907 5 connected across said winding, a touch element compris ing a pair of separated narrow elongated conductor tapes arranged side by side and closely adjacent whereby a user automatically touches both simultaneously, means connecting one of said tapes to the grid, a potentiometer connected in series with said tape and the grid, and means 6 touched by a single ?nger of a user, means connecting one of said strips to the grid through a relatively high re sistance, and means grounding the other strip, the dis charge tube having characteristics whereby it will remain non-conductive under the voltage of the source of alter nating current until the charge on the control grid is in grounding the other tape, the discharge tube having char creased positively by grounding the touch element strip acteristics whereby it will remain non-conductive under connected thereto and then will ?re with a pulse dis the voltage of the source of alternating current until charge through the relay winding and recti?er. the charge on the control grid is increased positively by 10 References Cited in the ?le of this patent grounding the touch element conductor tape connected therewith and then will ?re with a pulse discharge through UNITED STATES PATENTS the relay winding and recti?er. 1,840,055 2,062,269 Rentschler ____________ __ Ian. 5, 1932 Knowles ____________ __ Nov. 24, 1936 trol grid, means for connecting the cathode and anode 2,810,066 Green _____‘ __________ __ Oct. 15, 1957 to a source of alternating current, a lighting circuit, a 2,848,659 Cutler _______________ __ Aug. 19, 1958 latch type relay including a switch controlling said light ing circuit and an operative winding controlling said 2,870,329 Aubert ______________ __ Jan. 20, 1959 2,896,131 Schumann ____________ __ July 21, 1959 3. In a touch controlled circuit, a cold cathode electric discharge tube including a cathode, an anode and a con 15 switch and connected in series with said source and the 20 OTHER REFERENCES cathode and anode, a recti?er connected across the said Parrish: “Electronic Design,” November 15, 1956; winding, a touch element comprising a pair of separated pages 22-25. narrow elongated conductor strips placed side by side and closely adjacent whereby both are automatically Sandretto: “Radio-Electronics,” September 1957; pages 61-63.