US3612789A - Manual control device for switches and timers - Google Patents

Manual control device for switches and timers Download PDF

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Publication number
US3612789A
US3612789A US801559A US3612789DA US3612789A US 3612789 A US3612789 A US 3612789A US 801559 A US801559 A US 801559A US 3612789D A US3612789D A US 3612789DA US 3612789 A US3612789 A US 3612789A
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Prior art keywords
actuator
control means
control
control device
plunger
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US801559A
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English (en)
Inventor
Edgar E Marquis
Emil Niemand
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Robertshaw Controls Co
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Robertshaw Controls Co
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
    • G04F3/02—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms
    • G04F3/027—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms using electrical contacts, e.g. for actuating electro-acoustic device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/292—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC
    • H02P7/295—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC of the kind having one thyristor or the like in series with the power supply and the motor

Definitions

  • FIG.I3 a 3 5 THEIR ATTORNEYS PATENTEDHBHZTQH POWER SOURCE SHEET 8 OF 6 AC. POWER SOURCE PHASE CONTROL CIRCUIT PORTION INVENTORS EDGAR E. MARQUIS EMIL NIEMAND BY 7 MIMM THEIR ATTORNEYS improved parts for such a control device or the like.
  • This invention also relates to an improved control system utilizing such a control device or the like.
  • a timer-actuated control device has been'provided wherein it is desired to select a predetermined short period of time that the control device is to operate an actuator and that the start of the time period for the timer should take place substantially simultaneous with the initial actuation of the actuator so as to provide an accurate time period of operation of the device being controlled by the control device.
  • a control device is particularly adapted for controlling a household blender or the like where the actual time period of operation of the blender can be accurately controlled.
  • one embodiment of this invention provides a control device havinga frame means carrying a windup timer mechanism and an electrical switch with the windup mechanism being operatively interconnected to a control knob.
  • a movable plunger is carried by the frame means and will close the electrical switch when moved to one position thereof upon the depressing of a pushbutton member of the control knob construction, the frame means carrying a movable latch member when in one position thereof latches the timer mechanism from operating and permitting movement of the movable plunger.
  • the latch member is moved from its latching engagement with the timer mechanism and into position to latch the plunger in its position that closes the electrical switch until the latch member is moved back to its latching position with the timer mechanism when the control knob construction is returned to its off position by either manual or timed movement thereof.
  • Another feature shown in one embodiment of this invention is to provide such a control device with a second switch which opens and closes a circuit in a a predetermined pattern during the time period of operation of the control device.
  • Another object of this invention is to provide an improved control system having one or more of the novel features set forth above or hereinafter shown or described. Other objects, uses and advantages of this invention are apparent from a reading of this description which proceeds with reference to the accompanying drawings forming a part thereof and wherein:
  • FIG. 1 is a front view of the improved control device of this invention.
  • FIG. 2 is a cross-sectional view of the control device of FIG. 1 and is taken substantially on line 2-2 of FIG. 1.
  • FIG. 3 is a view similar to FIG. 2 except that part of the control device is shown in elevation and the control knob construction is in another operating position thereof.
  • FIG. 4 is a side view of the control device of FIG. 1 and is taken in the direction of lines 4-4 of FIG. 1.
  • FIG. 5 is a cross-sectional view of the control knob construction and is taken'on line 5-5 of FIG. 2.
  • FIG. 6 is a cross-sectional view of the control device of FIG. 1 and is taken on line 6-6 of FIG. 4.
  • FIG 7 is a cross-sectional view of the control device of FIG. 4 and is taken on line 7-7 thereof.
  • FIG. 8 is a cross-sectional view of the control device of FIG. 4 and is taken on line 8-8 thereof.
  • FIG. 9 is a cross-sectional view of the control device of FIG. 4 and is taken substantially on line 9-9 thereof.
  • FIG. 10 is a cross-sectional view taken substantially on line 10-10 of FIG. 4 with background structure removed to illustrate the clutch and timer spring means of the control device of FIG. 1.
  • FIG. 11 is an enlarged fragmentary, cross-sectional view of the friction clutch means of the control device of FIG. 2.
  • FIG. 12 is a view similar to FIG. 1 with a plate portion of FIG. 7 being shown in phantom to illustrate the operation of certain parts therebehind.
  • FIG. 13 is a view similar to FIG. 12 and illustrates the structure in a timer running position thereof.
  • FIG. 14 is a view similar to FIG. 12 and illustrates the structure in the continuous on condition thereof.
  • FIG. 15 is a schematic circuit diagram incorporating the control device of FIG. 2 to control the operation of a motor.
  • FIG. 16 is a schematic circuit diagram of an electronic motor control circuit incorporating the control device of FIG. 2. While the various features of this invention are hereinafter described and illustrated as being particularly adaptable for controlling the operation of a motor means for a household blender or the like, it is to be understood that the various features of this invention can be utilized singly or in any combination thereof to provide control means for other devices as desired.
  • the improved control device of this invention is generally indicated by the reference numeral 20 and comprises a frame means 21 having a plurality of plates 22, 23 and 24 secured in stacked spaced relation by cooperating fastening means 25 and spacing means 26 and 27 as illustrated, the plate 22 carrying internally threaded spacing means 28 against which a control panel 29 can be fastened by suitable fastening means 30.
  • a control shaft 31 is rotatably mounted to the frame means 21 through suitable openings 32 and 33 in the plates 22 and 23 as illustrated in FIG. 2 and is held from axial movement relative thereto by enlargements 34 and 35 respectively abutting against the inside surfaces of the plates 22 and 23.
  • the enlargement 35 of the control shaft 31 is secured to one end of a loosely coiled windup spring 36 in a conventional manner as illustrated in FIGS. 2 and 10, the other end 37 of the windup spring 36 being looped around one of the spacer means 27 as illustrated in FIG. 10.
  • a friction clutch means 38 is carried on the control shaft 31 intermediate the enlargements 34 and 35 thereof and is best illustrated in FIG. 11, the friction clutch 38 comprising a disclike member 39 fixed to the control shaft 31 in any suitable manner and a plastic pinion gear 40 urged into frictional engagement with the side 41 of the disclike member 39 by a bowed spring means 42.
  • the control shaft 31 can be manually rotated relative to the gear 40 when the gear 40 is locked from rotational movement and the spring means 42 will cause the gear 40 to rotate in unison with the control shaft 31 when the gear 40 is not locked from rotational movement.
  • the gear 40 is disposed in meshing relation with a pinion gear 43 rotatably mounted to the frame means 21 by a shaft means 44, the shaft means 44 carrying another gear 45 which is disposed in meshing relation with a pinion gear 46, FIG. 4, carried on suitable shaft means 46 rotatably mounted to the frame means 21 with that shaft means 46' carrying another gear 47 disposed in meshing relation with a pinion gear 48 carried on a shaft means 49 that is rotatably mounted to the frame means 21.
  • the shaft means 49 carries a gear 50 that has angularly disposed teeth 51, FIG.
  • a latch member 54 has opposed ears 55 received in suitable openings in the opposed plates 22 and 23 to pivotally mount the latch member 54 thereto, the latch member 54 having one arm 56 adapted to engage against the ratchet member 53 in the manner illustrated in FIG. 8 to prevent ratcheting movement of the ratchet member 53 and, thus, to latch the gear 40 and shaft 31 from being rotated by the timer spring 36.
  • the frame means 21 carries a tension spring 57 having one end 58 interconnected to the latch member 54 to normally tend to pivot the latch member 54 in a counterclockwise direction in FIG. 8 to move the arm 56 out of constraining engagement with the ratchet member 53.
  • the latch member 54 has another arm 59 disposed transversely relative to the arm 56 and is adapted to be engaged by a cam portion 60 of a cam member 61 rotatably mounted to the frame means 21 by shaft means 62 carried by the plate means 22 and 23 whereby when the cam member 61 is disposed in the position illustrated in FIG. 8, the same cams the arm 59 in a manner to hold the latch member 54 in the position illustrated in FIG. 8 in opposition to the force of the tension spring 57 to constrain movement of the latch member 53 and, thus, to lock the gear 40 of the control shaft 31 from rotational movement.
  • the tension spring 57 has its other end 63 interconnected to a tang 64 of the cam member 61 so as to always tend to rotate the cam member 61 in a counterclockwise direction in FIG. 8 to tend to maintain the latch member 54 in a position to constrain movement of the ratchet member 53.
  • the cam member 61 is provided with another tang 65 which is adapted to be engaged by a cam member 66 carried on the control shaft 31 to rotate in unison therewith.
  • the cam member 66 has a cam surface 67 disposed in such a position that the tension spring 57 is adapted to maintain the cam member 61 in a position to hold the latch member 54 in its constraining engagement with the ratchet member 53.
  • the cam surface 67 of the cam member 66 acts against the tang 65 of the cam member 61 to rotate the same in a clockwise direction from the position illustrated in FIG. 12 to the position illustrated in FIG. 13 which will permit the latch member 54 to be moved from the dash line position of FIG. 13 to the full line position illustrated in FIG.
  • cam member 68 which is loosely mounted for rotation on the control shaft 31 to be moved into the position illustrated in FIG. 13 so that a high side 69 of the cam member 68 will bear against the tang 65 of the cam member 61 to hold the same in the position of FIG. 13 so that the latch member 54 can move to the full line position of FIG. 13 in a manner hereinafter described even though the cam member 66 has now been moved by the control shaft 31 further in a clockwise direction beyond the tang 65 of the cam member 61.
  • the cam member 68 is normally urged in a clockwise direction by a hairpin spring 70 carried by the frame means 21 and bearing against a tang 71 of the cam member 68.
  • another tank 72 of the cam member 68 projects through a slot 73 in the plate 22 to limit the clockwise movement of the cam member 68 by the spring 70.
  • the cam member 68 also has another tang 74 against which the cam member 66 engages to move the cam member 68 to the off position illustrated in FIG. 12 and, thus, out of engagement with the tang 65 of the cam member 61 to permit the cam member 61 to move to the position illustrated in FIG. 8 and 12 and hold the latch member 54 in constrained relation with the ratchet member 53.
  • a rod or plunger 75 is carried by the frame means 21 by passing through suitable aligned openings 76, 77 and 78 in the plates 22, 23 and 24, the plunger 75 carrying an enlargement 79 against which one end 80 of a compression spring 81 bears whereas the other end 82 of the compression spring 81 bears against a stationary member 83 of the plate 23.
  • the compression spring 81 tends to maintain the plunger or rod 75 in the position illustrated in FIG. 4 where a rounded end 84 of the plunger 75 is out of engagement with an actuator 85 carried by the plate 24.
  • the actuator 85 comprises an electrical switch that has a fixed contact 86 carried on a terminal means 87 fastened to the plate 24 by fastening means 88.
  • the switch 85 includes a movable contact 89 carried on a flexible blade 90 that has one end 91 (FIG. 9) fastened to a terminal means 92 secured to the plate 24 by suitable fastening means 93.
  • the natural bias of the spring blade 90 is to hold the movable contact 89 out of electrical contact with the contact 86.
  • the rounded end 84 of the plunger 75 cams against the spring blade 90 to move the spring blade 90 downwardly to place the contact 89 into electrical contact with the contact 86 and hold the same thereagainst as long as the plunger 75 is disposed in the position illustrated in FIG. 3 whereby the switch means 85 will be in the closed position.
  • Subsequent movement of the plunger 75 back to the position illustrated in FIG. 4 permits the spring blade 90 to move upwardly to move the contact 89 out of contact with the contact 86 so as to open the switch construction 85.
  • the rod 75 is formed from suitable electrically insulating material, such as plastic or the like.
  • the actuator 85 could be itself a plunger operated electrical switch so that the end 84 of the plunger 75 could operate against an on off insulated plunger of an electrical switch unit whereby the plunger 75 could be formed of metal.
  • a control knob construction is provided for the control device 20 and is of the type disclosed and claimed in a Robertshaw Controls Company patent application, Ser. No. 801,468 filed Feb. 24, 1969.
  • control knob construction 94 comprises an outer dial member 95 having a platelike portion 96 at one end thereof and a knob construction 97 at the other end thereof, the outer dial member 95 having an opening means 98 passing concentrically therethrough and defining a web structure 99 spanning the opening means 98.
  • the web structure 99 as illustrated in FIG. 5 includes a central portion 100 interconnected to the remainder of the outer dial member 95 by a plurality of radially disposed integral fins 101, the central web portion 100 having an opening 102 passing therethrough of a configuration to receive the end 103 of the control shaft 31 in a press-fit relation to spline the shaft 31 and the outer dial member 95 together to rotate in unison.
  • the platelike portion 96 of the outer dial member 95 carries an annular dial indicator 104 as illustrated in FIG. 1 which indicates the position of the control shaft 31 relative to an indicating mark 105 on the control panel 29.
  • the pushbutton member 106 can be axially moved relative to the outer dial member 95 and through the constraining relation of the legs 108 and the fins 101, the pushbutton member 106 rotates in unison with the dial member 95 for a purpose hereinafter described.
  • a platelike member 112 has an opening 113 passing therethrough and telescopically receiving a spacer 28 of the frame means 21, the platelike member 112 having a yoke portion 114 partially surrounding the control shaft 31 to prevent rotational movement of the platelike member 112 relative to the spacer 28.
  • the platelike member 112 has an elongated tang 115 that is adapted to project through aligned openings 116 and 117 formed respectively in the plates 22 and 23 of the frame means 21 so as to prevent any pivoting movement of the platelike member 112 relative to the longitudinal axis of the spacer 28.
  • the platelike member 112 is adapted to abut against the left-hand end 118 of the plunger 75 as well as to abut against the right-hand ends 119 of the legs 108 of the pushbutton member 106, the control shaft 31 carrying a split ring means 120 to limit relative movement of the platelike member 112 relative to the control shaft 31 to the left under the force of the compression spring 81 of the plunger 75.
  • control device 20 of this invention As described up to this point is as follows:
  • the actuator 85 is in its open position thereof so that no electrical current can be passed to the motor 122 of FIG. 15.
  • the cam member 66 of FIG. 12 is in a position to permit the tension spring 57 to hold the cam member 61 in its camming position against the arm 59 of the latch member 54 so that the arm 56 of the latch member 54 is out of engagement with the enlargement 79 of the plunger 75 and is in engagement with the ratchet member 53 to lock the gear 40 and, thus, the shaft 31 in its off position even though there is still some stored energy in the timer spring 36 tending to rotate the control shaft 31 further in a counterclockwise direction.
  • the operator pushes inwardly on the plunger 106 whereby the plate 112 and plunger 75 are moved to the right as illustrated in FIG. 3 and when the enlargement 79 of the plunger 75 clears the arm 55 of the latch member 54, the tension spring 57 moves the latch member 54 in a counterclockwise direction to position the arm 56 thereof in overlapping relation with the enlargement 79 of the plunger 75.
  • the plunger 75 is latched in its right-hand position of FIG. 3 by the latch member 54 so that the actuator 85 remains continuously actuated to close contacts 86 and 89 for as long as the control know construction 94 remains in its manual position.
  • the control device can have the plate 24 formed from material used for making printed circuits with a printed circuit means 127 on side 128 thereof which comprises a first line 129 arranged in a somewhat circular path with a portion connected to the terminal 92 that carries the spring blade and movable contact 89.
  • the line 129 is printed in such a manner that the same has radially inwardly directed space portions 131 adapted to be sequentially contacted by a wiper contact 132 on a spring blade 133 fastened to the end projection 134 of the control shaft 31.
  • the printed circuit 127 includes a second line 135 having an inner circular portion 137 adapted to be contacted by a wiping contact 138 on the other end of the spring blade 133.
  • FIG. 16 shows a typical electronic circuit for controlling the speed of operation of a motor modified to include the embodiment of control device 20 which has the printed circuit 127 and wiper blade 133 arrangement.
  • the control device 20 is incorporated to periodically short out the gating signal of an SCR.
  • the combination permits periodic energization of a motor during a timed period, manual momentary operation of the motor as well as operation for an indefinite untimed period.
  • This combination is particularly suitable for controlling the operation of a food blender motor since the on-off action allows the ingredients being blended to be alternately mixed and settled during the selected timed operation of control 20.
  • control device 20 in the circuit is readily identified since the connections and parts of control device 20 are referenced using the same reference numerals as were used when describing the control device 20 with the reference letter A following the reference numeral.
  • the electric motor 124 has one side connected to the anode of a silicon-controlled rectifier (SCR) 146 and to one side of a phase control circuit portion 147.
  • the other side of the motor 124 is connected to one side of an alternating current power supply 148.
  • the cathode 149 of SCR 146 is connected to terminal 92A of the control device 20A.
  • the terminal 92A of switch 85A is also connected to the other side of the phase control circuit portion 147 and to the line 129A of the control device 20AO
  • the blade 90A of switch 85A completes the circuit to the other side of the power source 148 via the connection made to connector 87A.
  • the phase control circuit portion 147 which can take on many forms, supplies a gating signal to gate 150 of SCR 146 via the line 151.
  • Line 151 also connects with line 135A of the control device 20A.
  • the line 135A which connects with the wiper blade 133A is connected to line 151.
  • the wiper 133A when in contact with a portion 131A causes the gate signal on line 151 to be shorted to cathode 149 of the SCR 146 so the SCR 146 will not conduct while the wiper 133A is in contact with a portion 131A.
  • the SCR 146 will, of course, conduct to energize the motor 124 each time the wiper 133A is between the portion 131A.
  • the motor 124 will be periodically energized in accordance with the spacings between the portions 131A.
  • connection of the control device 20A functions to control only the gating current to provide an arrangement where the printed circuit 127A and wiper 133A need only be capable of carrying a small current level.
  • the large current level demanded by the motor 124 is handled by the SCR 146 and the switch 85A.
  • the frictional forces involved as the wiper 133A is moved over the portions 131A can be made very small, thus minimizing the load placed on the driver mechanism of the control device 20.
  • this invention not only provides an improved control device having many novel and unobvious features, but also this invention provides an improved control system and the like.
  • a control device having an actuator for operating an apparatus when said actuator is actuated, the improvement comprising a manually operated control means operatively associated with said actuator for actuating the same, said control means having a manually settable part that is adapted to be set in a position thereof for maintaining said actuator in an actuated condition thereof for a predetermined time period, said part of said control means being adapted to be set in another position thereof to provide momentary and repetitive manual actuation of said actuator as long as said part remains in said other position thereof, said part of said control means being adapted to be set in a continuous on position thereof to maintain said actuator in an actuated condition thereof as long as said part of said control means is in said continuous on position thereof.
  • control means comprises a control knob construction having a rotatable member for setting said control means in said position for maintaining said actuator in said actuated condition thereof for a predetermined time period, said rotatable member being said part of said control means.
  • a control device having an actuator for operating an apparatus when said actuator is actuated
  • the improvement comprising a manually operated control means operatively associated with said actuator for actuating the same, said control means having a manually settable part that is adapted to be set in a position thereof for maintaining said actuator in an actuated condition thereof for a predetermined time period, said part of said control means being adapted to be set in another position thereof to provide momentary and repetitive manual actuation of said actuator as long as said part remains in said other position thereof, said part of said control means being adapted to be set in a continuous on position thereof to maintain said actuator in an actuated condition thereof as long as said part of said control means is in said continuous on position thereof, said control means comprising a control knob construction having a rotatable member for setting said control means in said position for maintaining said actuator in said actuated condition thereof for a predetermined time period, said rotatable member being said part of said control means, said rotatable member being adapted to be rotated to various positions for selecting different predetermined periods
  • a control device having an actuator for operating an apparatus when said actuator is actuated
  • the improvement comprising a manually operated control means operatively associated with said actuator for actuating the same, said control means having a manually settable part that is adapted to be set in a position thereof for maintaining said actuator in an actuated condition thereof for a predetermined time period, said part of said control means being adapted to be set in another position thereof to provide momentary and repetitive manual actuation of said actuator as long as said part remains in said other position thereof, said part of said control means being adapted to be set in a continuous on position thereof to maintain said actuator in an actuated condition thereof as long as said part of said control means is in said continuous on position thereof, said control means comprising a control knob construction having a rotatable member for setting said control means in said position for maintaining said actuator in said actuated condition thereof for a predetermined time period, said rotatable member being said part of said control means, said control knob construction having a pushbutton member that must be actuated to start said predetermined
  • control means comprises a movable plunger which when moved to one position thereof actuates said actuator and when moved to another position thereof deactuates said actuator, said control means also comprising a movable plate for abutting said plunger to move said plunger in unison therewith.
  • a control device having an actuator for operating an apparatus when said actuator is actuated, the improvement comprising a manually operated control means operatively associated with said actuator for actuating the same, said control means having a manually settable part that is adapted to be set in a position thereof for maintaining said actuator in an actuated condition thereof for a predetermined time period, said part of said control means being adapted to be set in another position thereof to provide momentary and repetitive manual actuation of said actuator as long as said part remains in said other position thereof, said part of said control means being adapted to be set in a continuous on position thereof to mainwhen moved to another position thereof deactuates said actuator, said control means also comprising a movable plate for abutting said plunger to move said plunger in unison therewith, said control means further comprising a pushbutton member engageable with said plate for moving said plate and, thus, said plunger from said one position thereof to said other position thereof.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Mechanical Control Devices (AREA)
  • Valve Device For Special Equipments (AREA)
  • Transmission Devices (AREA)
  • Push-Button Switches (AREA)
US801559A 1969-02-24 1969-02-24 Manual control device for switches and timers Expired - Lifetime US3612789A (en)

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US80155969A 1969-02-24 1969-02-24

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US (1) US3612789A (de)
CA (1) CA918206A (de)
DE (1) DE2008355A1 (de)
FR (1) FR2037118B1 (de)
GB (2) GB1297691A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130789A (en) * 1977-07-25 1978-12-19 Allis-Chalmers Corporation Tap changing voltage regulator which eliminates preventive autotransformer
US4328885A (en) * 1979-12-05 1982-05-11 Andco Actuator Products, Inc. Actuator activated switching mechanism
US4547077A (en) * 1983-03-30 1985-10-15 Omron Tateisi Electronics Co. Mode selection arrangement for use in a timer
US4572932A (en) * 1982-04-23 1986-02-25 Rotork Controls Limited Actuating mechanism
US20060238975A1 (en) * 2005-04-22 2006-10-26 Saul Lin Power control device
US20080163768A1 (en) * 2006-12-19 2008-07-10 Glucksman Dov Z Food processor
US20120100492A1 (en) * 2010-10-25 2012-04-26 Hodapp Jr Leo Edward Lockout system for surface burners of a cooking appliance
US20120279841A1 (en) * 2009-11-24 2012-11-08 Sumitomo Wiring Systems, Ltd. Dial switch
US20130032463A1 (en) * 2010-05-26 2013-02-07 Sumitomo Wiring Systems, Ltd. Operation apparatus
US20130037392A1 (en) * 2010-05-20 2013-02-14 Sumitomo Wiring Systems, Ltd., Operating device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576836A (en) * 1947-08-07 1951-11-27 Bell Telephone Labor Inc Switch
US3090249A (en) * 1957-10-31 1963-05-21 Maytag Co Interval timer
US3098131A (en) * 1960-08-17 1963-07-16 Int Register Co Timing mechanism
US3254166A (en) * 1963-12-23 1966-05-31 American Mach & Foundry Appliance timer
US3306996A (en) * 1965-03-22 1967-02-28 Mallory & Co Inc P R Wrap-around plug-in timer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576836A (en) * 1947-08-07 1951-11-27 Bell Telephone Labor Inc Switch
US3090249A (en) * 1957-10-31 1963-05-21 Maytag Co Interval timer
US3098131A (en) * 1960-08-17 1963-07-16 Int Register Co Timing mechanism
US3254166A (en) * 1963-12-23 1966-05-31 American Mach & Foundry Appliance timer
US3306996A (en) * 1965-03-22 1967-02-28 Mallory & Co Inc P R Wrap-around plug-in timer

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130789A (en) * 1977-07-25 1978-12-19 Allis-Chalmers Corporation Tap changing voltage regulator which eliminates preventive autotransformer
US4328885A (en) * 1979-12-05 1982-05-11 Andco Actuator Products, Inc. Actuator activated switching mechanism
US4572932A (en) * 1982-04-23 1986-02-25 Rotork Controls Limited Actuating mechanism
US4547077A (en) * 1983-03-30 1985-10-15 Omron Tateisi Electronics Co. Mode selection arrangement for use in a timer
US20060238975A1 (en) * 2005-04-22 2006-10-26 Saul Lin Power control device
US7239513B2 (en) * 2005-04-22 2007-07-03 Saul Lin Power control device
US20080163768A1 (en) * 2006-12-19 2008-07-10 Glucksman Dov Z Food processor
US20120279841A1 (en) * 2009-11-24 2012-11-08 Sumitomo Wiring Systems, Ltd. Dial switch
US8680416B2 (en) * 2009-11-24 2014-03-25 Sumitomo Wiring Systems, Ltd. Dial switch
US20130037392A1 (en) * 2010-05-20 2013-02-14 Sumitomo Wiring Systems, Ltd., Operating device
US8664551B2 (en) * 2010-05-20 2014-03-04 Sumitomo Wiring Systems, Ltd. Operating device
US20130032463A1 (en) * 2010-05-26 2013-02-07 Sumitomo Wiring Systems, Ltd. Operation apparatus
US8680417B2 (en) * 2010-05-26 2014-03-25 Sumitomo Wiring Systems, Ltd. Operation apparatus
US20120100492A1 (en) * 2010-10-25 2012-04-26 Hodapp Jr Leo Edward Lockout system for surface burners of a cooking appliance
US8783243B2 (en) * 2010-10-25 2014-07-22 General Electric Company Lockout system for surface burners of a cooking appliance

Also Published As

Publication number Publication date
FR2037118A1 (de) 1970-12-31
GB1297692A (de) 1972-11-29
CA918206A (en) 1973-01-02
GB1297691A (de) 1972-11-29
FR2037118B1 (de) 1974-09-06
DE2008355A1 (de) 1971-09-09

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