US3855665A - Remote control for vacuum cleaner motor - Google Patents

Remote control for vacuum cleaner motor Download PDF

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Publication number
US3855665A
US3855665A US00315438A US31543872A US3855665A US 3855665 A US3855665 A US 3855665A US 00315438 A US00315438 A US 00315438A US 31543872 A US31543872 A US 31543872A US 3855665 A US3855665 A US 3855665A
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United States
Prior art keywords
motor
transformer
phase shifting
shifting network
variable impedance
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Expired - Lifetime
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US00315438A
Inventor
O Schwartz
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Electrolux AB
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Electrolux AB
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Filing date
Publication date
Priority to SE16748/71A priority Critical patent/SE363941B/xx
Application filed by Electrolux AB filed Critical Electrolux AB
Priority to US00315438A priority patent/US3855665A/en
Priority to GB5850172A priority patent/GB1387898A/en
Priority to DE2262296A priority patent/DE2262296A1/en
Priority to NLAANVRAGE7217514,A priority patent/NL168667C/en
Priority to FR7246178A priority patent/FR2170565A5/fr
Priority to JP47130155A priority patent/JPS4872620A/ja
Priority to US05/517,045 priority patent/US3956688A/en
Application granted granted Critical
Publication of US3855665A publication Critical patent/US3855665A/en
Priority to US05/555,702 priority patent/USRE28920E/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2894—Details related to signal transmission in suction cleaners
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2842—Suction motors or blowers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2857—User input or output elements for control, e.g. buttons, switches or displays
    • 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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/10—Commutator motors, e.g. repulsion motors
    • H02P25/14—Universal motors
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/907—Specific control circuit element or device
    • Y10S388/917—Thyristor or scr
    • Y10S388/919—Triggered by resistor or capacitor

Definitions

  • a vacuum cleaner with a suction conduit for example, it would be desirable to provide both a means for selectively connecting and disconnecting the power source to the motor as well as controlling the motor speed at a location where the hose or tubular shaft of the vacuum cleaner is gripped by theuser.
  • the present invention relates to a remote control structure fora vacuum cleaner motor or the like which is located in the proximity of the gripping part of the vacuum cleaner.
  • Another object of the present invention is to provide a thyristor device and a phase shifting network controlling the power input to .the motor.
  • FIG. 1 is a perspective view of the vacuum cleaner embodying the remote control device for the motoroperation and speed;
  • FIG. 2 is a circuit diagram of the arrangement constructed in accordance with the teachings of the present invention.
  • FIG. 3 is an enlarged side elevational view of the vacuum cleaner tank.
  • FIGS. 1 and 3 of the drawings the invention is shown in connection with a horizontal type vacuum cleaner 10. It should be understood that it is within the scope of the present invention to utilize the instant arrangement with other vacuum cleaner configurations as well as other household appliances.
  • the vacuum cleaner is provided with a housing section 11 having a front end removable cover 12 and a latch 13.
  • the housing section 11 is also provided with a handle 14.
  • the housing is provided with a set of rear wheels 15 and a front glider 16 for facilitating movement of the vacuum cleaner housing on the floor 2 or other supporting surface.
  • An outlet opening 17 is illustrated in the rear of the housing section 11.
  • I front end cover 12 is provided with an inlet opening 18 through which dust-laden air flows into the housing 1 1.
  • a dust container or bag 19 is removably affixed to the inlet opening 18in the front end cover12 and functions to separate dirt from air.
  • the flow of air through the housing section 11 is caused by a motor and fan unit 20 in which a centrifugal fan'21 is arranged at one end of the electric motor 22.
  • the latter is preferably resiliently mounted at 23 in any suitable manner.
  • the fan 21 receives air which has passed through the dust bag 19 and is substantially free of dust and dirt. The air is discharged from the fan 21 through the motor 22 and finally passes through the rear outlet opening 17 of the housing section 11.
  • a flexible suction hose 26 is removably connected at one end to the inlet opening 18 of the housing section 11.
  • Suitable cleaning appliances such as a nozzle 28 may be connected to a tube or wand 30 which in turn is connected to the outer free end of hose 26.
  • the tubes 30 may be constituted of several interconnected sections in which the overall length of the tube can be selectively increased or diminished.
  • the end of the hose 26 that is remote from the vacuum cleaner 10 is provided with a coupling to the tube 30 which also functions as a grip 32 for manipulating the vacuum cleaner hose 26, and its associated tube 30.
  • a rotatable knob 34 is shown mounted on the exterior of the grip 32 and easily reached by a person handling the grip.
  • the knob is opveratively connected to a variable resistor 36 housed internally in the grip 32.
  • the electrical conductors 38 are encased in an insulated sheath 40 and have a series of insulated mountings 42 positioned at intervals along the hose 26.
  • the conductors 38 connect the variable resistor 36 to the circuit T shown in FIGS. 2 and 3.
  • a vacuum cleaner motor 44 has power supplied to it from an alternating current source 46 through a symmetric thyrister 48, which is also known as a triac.
  • the control electrode or gate 49 of the thyristor 48 is connected to a diac 50, which is a bidirectional symmetric diode, which in turn is coupled to a phase-shifting network including a resistor 51 and a capacitor 52.
  • a compensating network comprising a resistor 53 and a capacitor 54 is included in the circuit.
  • a step-down transformer 55 is shown connected in the circuit in which the primary winding 56 is coupled tothe phase-shifting network comprising a resistor 51 and a capacitor 52.
  • the conductors 38 which are low voltage conductors hereinbefore referred to, couple the secondary winding 57 of the transformer 55 to the variable resistor 36.
  • the latter is in turn connected to the operating knob 34 on the grip 32. It should be noted that the number of turns of the secondary winding 57 is such that the magnitude of the voltage in the low voltage circuit 57, 38, 36 is maintained at a continuously low value.
  • the primary winding 56 will function as a variable impedance coupled to the phase-shifting network that controls the firing times of the thyristor 48, and by variation of resistance of the variable resispled to the phase-shifting network in such a manner that the impedance of the p rimary winding 56 will be connected in parallel with the capacitor 52.
  • a desirable I result of this parallel circuit is an advantageous 'curve shape of the control pulses of the thyristor 48.
  • the speed of the vacuum cleaner motor and hence the suction capability of the apparatus can be regulated easily by the rotatable knob 34 mounted on the grip 32. Furthermore, the motor 44 can be started and stopped by means of the knob 34.
  • the present construction is a great convenience to the user in that it is not required to bend toward the vacuum cleaner housing 11 each time in order to regulate or stop start the apparatus.
  • the present invention provided an extremely simple but reliable arrangement for control of motor speed by low voltage. Furthermore, the operating circuit of the apparatus can also be a very simple design while still fulfilling the safety requirements prescribed by law.
  • floor in the expression floor-care is intended not only to cover floors but also surfaces like rugs, carpets and other floor coverings, for example.
  • a remote control arrangement for a vacuum cleaner provided with a motor having an electrical energy source, a flexible hose, a cleaning appliance, a
  • coupling means operatively connecting the flexible hose with the cleaning appliance, said coupling means also functioning as a hand grip comprising a. an electrical circuitadapted to connect the source of electrical energy to'the motor and including 1. a thyristor device provided with a phase shifting network controlling the power input to the movtor,
  • a second variable impedance including the secondary winding of the transformer and a variable resistor located at a distance from the motor, an operating member for the variable resistor located on said hand grip, and a low voltage conduit positioned on said hose coupling the variable resistor to the secondary winding of the transformer,
  • phase shifting network including a capacitor coupled in parallel to the primary winding of said transformer whereby a desirable curve shape of said control pulses of said thyristor is produced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

In a household appliance, such as a vacuum cleaner, a remote control is provided for the vacuum cleaner motor speed as well as the on/off function of the motor. The control unit is low voltage where connected to the operating member and complies with government safety requirements.

Description

United States Patent [1 91 Schwartz Dec. 24, 1974 REMOTE CONTROL FOR VACUUM CLEANER MOTOR [75] lnventorz' Osten Schwartz, Varmdo, Sweden [73] Assignee: Aktiebolaget Electrolux, Stockholm,
' I Sweden 22 Filed: Dec. l5, 1972 21 Appl. No.: 315,438
[52] US. Cl 15/339, 15/412, 323/24,
' I 323/36 [51] Int. Cl ..'A47l 9/00 [58] Field of Search 15/339, 412; 323/36, 24
[56] ReferencesCited UNITED STATES PATENTS Muskovac 323/36 X 5/1971 Hctland 15/412 UX 1/1972, Wickham et al 15/339 X Primary Examiner-Robert L. Bleutge Assistant Examiner-C. K. Moore [57] ABSTRACT In a household appliance, such as a vacuum cleaner, a remote control is provided for the vacuum cleaner motor speed as well as the on/off function of the movtor. The control unit is low voltage where connected to the operating member and complies with government safety requirements. a
' 2 Claims, 3 Drawing Figures REMOTE CONTROL FOR VACUUM CLEANER.
' MOTOR BACKGROUND OF INVENTION It is considered highly appropriate in household appliances or other. electrical apparatus to provide a power input to the appliance or device which can be controlled at a distance from the appliance or the like.
In a vacuum cleaner with a suction conduit, for example, it would be desirable to provide both a means for selectively connecting and disconnecting the power source to the motor as well as controlling the motor speed at a location where the hose or tubular shaft of the vacuum cleaner is gripped by theuser.
Although a remote motor control for a vacuum cleaner is extremely beneficial, it is difficult to arrange in practice since wires carrying house current would have to be led from the operating member located adja- The present invention relates to a remote control structure fora vacuum cleaner motor or the like which is located in the proximity of the gripping part of the vacuum cleaner.
It is an object of the present invention to provide a low voltage remote control arrangement for a vacuum cleaner motor located near the gripping portion of the device which is both simple in construction and inexpensive to fabricate.
Another object of the present invention is to provide a thyristor device and a phase shifting network controlling the power input to .the motor.
The invention will now be more fully described with reference to the accompanying drawings in which:
FIG. 1 is a perspective view of the vacuum cleaner embodying the remote control device for the motoroperation and speed;
FIG. 2 is a circuit diagram of the arrangement constructed in accordance with the teachings of the present invention; and
FIG. 3 is an enlarged side elevational view of the vacuum cleaner tank.
DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION Referring to FIGS. 1 and 3 of the drawings, the invention is shown in connection with a horizontal type vacuum cleaner 10. It should be understood that it is within the scope of the present invention to utilize the instant arrangement with other vacuum cleaner configurations as well as other household appliances. The vacuum cleaner is provided with a housing section 11 having a front end removable cover 12 and a latch 13. The housing section 11 is also provided with a handle 14. In addition, the housing is provided with a set of rear wheels 15 and a front glider 16 for facilitating movement of the vacuum cleaner housing on the floor 2 or other supporting surface. An outlet opening 17 is illustrated in the rear of the housing section 11. The
I front end cover 12 is provided with an inlet opening 18 through which dust-laden air flows into the housing 1 1. A dust container or bag 19 is removably affixed to the inlet opening 18in the front end cover12 and functions to separate dirt from air.
The flow of air through the housing section 11 is caused by a motor and fan unit 20 in which a centrifugal fan'21 is arranged at one end of the electric motor 22. The latter is preferably resiliently mounted at 23 in any suitable manner. Inthe normal operation of the motor and fan unit, the fan 21 receives air which has passed through the dust bag 19 and is substantially free of dust and dirt. The air is discharged from the fan 21 through the motor 22 and finally passes through the rear outlet opening 17 of the housing section 11.
As seen in FIG. 1, a flexible suction hose 26 is removably connected at one end to the inlet opening 18 of the housing section 11. Suitable cleaning appliances such as a nozzle 28 may be connected to a tube or wand 30 which in turn is connected to the outer free end of hose 26. The tubes 30 may be constituted of several interconnected sections in which the overall length of the tube can be selectively increased or diminished.
The end of the hose 26 that is remote from the vacuum cleaner 10 is provided with a coupling to the tube 30 which also functions as a grip 32 for manipulating the vacuum cleaner hose 26, and its associated tube 30. As seenin FIGS. 1 and 3, a rotatable knob 34 is shown mounted on the exterior of the grip 32 and easily reached by a person handling the grip. The knob is opveratively connected to a variable resistor 36 housed internally in the grip 32. The electrical conductors 38 are encased in an insulated sheath 40 and have a series of insulated mountings 42 positioned at intervals along the hose 26. The conductors 38 connect the variable resistor 36 to the circuit T shown in FIGS. 2 and 3.
As seen in the circuit diagram of FIG. 2, a vacuum cleaner motor 44 has power supplied to it from an alternating current source 46 through a symmetric thyrister 48, which is also known as a triac. The control electrode or gate 49 of the thyristor 48 is connected to a diac 50, which is a bidirectional symmetric diode, which in turn is coupled to a phase-shifting network including a resistor 51 and a capacitor 52.
Sincethe motor 44 is an inductive load, a compensating network comprising a resistor 53 and a capacitor 54 is included in the circuit.
A step-down transformer 55 is shown connected in the circuit in which the primary winding 56 is coupled tothe phase-shifting network comprising a resistor 51 and a capacitor 52. The conductors 38, which are low voltage conductors hereinbefore referred to, couple the secondary winding 57 of the transformer 55 to the variable resistor 36. The latter is in turn connected to the operating knob 34 on the grip 32. It should be noted that the number of turns of the secondary winding 57 is such that the magnitude of the voltage in the low voltage circuit 57, 38, 36 is maintained at a continuously low value.
If the resistance of the resistor 36 is varied, a change of impedance at the primary side of the transformer 55 is effected. Thus, the primary winding 56 will function as a variable impedance coupled to the phase-shifting network that controls the firing times of the thyristor 48, and by variation of resistance of the variable resispled to the phase-shifting network in such a manner that the impedance of the p rimary winding 56 will be connected in parallel with the capacitor 52. A desirable I result of this parallel circuit is an advantageous 'curve shape of the control pulses of the thyristor 48.
It should be readily apparent that when the present vacuum cleaner is in use, the speed of the vacuum cleaner motor and hence the suction capability of the apparatus can be regulated easily by the rotatable knob 34 mounted on the grip 32. Furthermore, the motor 44 can be started and stopped by means of the knob 34. The present construction is a great convenience to the user in that it is not required to bend toward the vacuum cleaner housing 11 each time in order to regulate or stop start the apparatus.
The present invention provided an extremely simple but reliable arrangement for control of motor speed by low voltage. Furthermore, the operating circuit of the apparatus can also be a very simple design while still fulfilling the safety requirements prescribed by law.
in the claims the word floor in the expression floor-care is intended not only to cover floors but also surfaces like rugs, carpets and other floor coverings, for example.
Whatis claimed is:
1. A remote control arrangement for a vacuum cleaner provided with a motor having an electrical energy source, a flexible hose, a cleaning appliance, a
coupling means operatively connecting the flexible hose with the cleaning appliance, said coupling means also functioning as a hand grip comprising a. an electrical circuitadapted to connect the source of electrical energy to'the motor and including 1. a thyristor device provided with a phase shifting network controlling the power input to the movtor,
2. a standard type transformer generating a conventional hysteresis curve in which the primary winding thereof is a first variable impedance that is a part of the phase shifting network,
3. a second variable impedance including the secondary winding of the transformer and a variable resistor located at a distance from the motor, an operating member for the variable resistor located on said hand grip, and a low voltage conduit positioned on said hose coupling the variable resistor to the secondary winding of the transformer,
4. the magnitude of the first variable impedance which affects the phase shifting network being dependent upon and changeable by the second variable impedance,
5. said phase shifting network including a capacitor coupled in parallel to the primary winding of said transformer whereby a desirable curve shape of said control pulses of said thyristor is produced.
2. The arrangement as claimed in claim 1 wherein the operating member is a rotatable knob.

Claims (6)

1. A remote control arrangement for a vacuum cleaner provided with a motor having an electrical energy source, a flexible hose, a cleaning appliance, a coupling means operatively connecting the flexible hose with the cleaning appliance, said coupling means also functioning as a hand grip comprising a. an electrical circuit adapted to connect the source of electrical energy to the motor and including 1. a thyristor device provided with a phase shifting network controlling the power input to the motor, 2. a standard type transformer generating a conventional hysteresis curve in which the primary winding thereof is a first variable impedance that is a part of the phase shifting network, 3. a second variable impedance including the secondary winding of the transformer and a variable resistor located at a distance from the motor, an operating member for the variable resistor located on said hand grip, and a low voltage conduit positioned on said hose coupling the variable resistor to the secondary winding of the transformer, 4. the magnitude of the first variable impedance which affects the phase shifting network being dependent upon and changeable by the second variable impedance, 5. said phase shifting network including a capacitor coupled in parallel to the primary winding of said transformer whereby a desirable curve shape of said control pulses of said thyristor is produced.
2. a standard type transformer generating a conventional hysteresis curve in which the primary winding thereof is a first variable impedance that is a part of the phase shifting network,
2. The arrangement as claimed in claim 1 wherein the operating member is a rotatable knob.
3. a second variable impedance including the secondary winding of the transformer and a variable resistor located at a distance from the motor, an operating member for the variable resistor located on said hand grip, and a low voltage conduit positioned on said hose coupling the variable resistor to the secondary winding of the transformer,
4. the magnitude of the first variable impedance which affects the phase shifting network being dependent upon and changeable by the second variable impedance,
5. said phase shifting network including a capacitor coupled in parallel to the primary winding of said transformer whereby a desirable curve shape of said control pulses of said thyristor is produced.
US00315438A 1971-12-28 1972-12-15 Remote control for vacuum cleaner motor Expired - Lifetime US3855665A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE16748/71A SE363941B (en) 1971-12-28 1971-12-28
US00315438A US3855665A (en) 1971-12-28 1972-12-15 Remote control for vacuum cleaner motor
GB5850172A GB1387898A (en) 1971-12-28 1972-12-19 Appliance having an electric motor
DE2262296A DE2262296A1 (en) 1971-12-28 1972-12-20 DEVICE FOR REMOTE CONTROL OF THE MOTOR SPEED OF A HOUSEHOLD APPLIANCE
NLAANVRAGE7217514,A NL168667C (en) 1971-12-28 1972-12-22 DEVICE FOR VARIABLE ADJUSTMENT OF THE SPEED OF AN ELECTRIC MOTOR EQUIPPED WITH HOUSEHOLD APPLIANCES OR SIMILAR DEVICES.
FR7246178A FR2170565A5 (en) 1971-12-28 1972-12-26
JP47130155A JPS4872620A (en) 1971-12-28 1972-12-27
US05/517,045 US3956688A (en) 1971-12-28 1974-10-23 Remote control phase shift circuit for thyristor
US05/555,702 USRE28920E (en) 1971-12-28 1975-03-05 Remote control for vacuum cleaner motor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE16748/71A SE363941B (en) 1971-12-28 1971-12-28
US00315438A US3855665A (en) 1971-12-28 1972-12-15 Remote control for vacuum cleaner motor
US05/517,045 US3956688A (en) 1971-12-28 1974-10-23 Remote control phase shift circuit for thyristor
US05/555,702 USRE28920E (en) 1971-12-28 1975-03-05 Remote control for vacuum cleaner motor

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US05/517,045 Division US3956688A (en) 1971-12-28 1974-10-23 Remote control phase shift circuit for thyristor
US05/555,702 Reissue USRE28920E (en) 1971-12-28 1975-03-05 Remote control for vacuum cleaner motor

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US3855665A true US3855665A (en) 1974-12-24

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US00315438A Expired - Lifetime US3855665A (en) 1971-12-28 1972-12-15 Remote control for vacuum cleaner motor
US05/517,045 Expired - Lifetime US3956688A (en) 1971-12-28 1974-10-23 Remote control phase shift circuit for thyristor
US05/555,702 Expired - Lifetime USRE28920E (en) 1971-12-28 1975-03-05 Remote control for vacuum cleaner motor

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US05/517,045 Expired - Lifetime US3956688A (en) 1971-12-28 1974-10-23 Remote control phase shift circuit for thyristor
US05/555,702 Expired - Lifetime USRE28920E (en) 1971-12-28 1975-03-05 Remote control for vacuum cleaner motor

Country Status (7)

Country Link
US (3) US3855665A (en)
JP (1) JPS4872620A (en)
DE (1) DE2262296A1 (en)
FR (1) FR2170565A5 (en)
GB (1) GB1387898A (en)
NL (1) NL168667C (en)
SE (1) SE363941B (en)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031458A (en) * 1975-03-20 1977-06-21 Olympus Optical Co., Ltd. A.C. voltage regulator employing thyristor
DE2734051A1 (en) * 1977-07-28 1979-02-15 Licentia Gmbh Vacuum cleaner with speed reducing control circuit - is fitted with variable switching tracks, providing low speed start, coupled to switch and operated by common key
EP0005218A2 (en) * 1978-05-02 1979-11-14 Siemens Aktiengesellschaft Vacuum cleaner with a device for regulating the rotation speed of the motor-fan unit
FR2470580A1 (en) * 1979-11-28 1981-06-12 Duepro Ag BRUSH EQUIPMENT DRIVEN BY AN ELECTRIC MOTOR FOR DOMESTIC VACUUM CLEANERS
DE3222458A1 (en) * 1981-06-18 1983-01-20 Electrolux Ab REMOTE CONTROL FOR A VACUUM CLEANER MOTOR
US4611365A (en) * 1983-02-12 1986-09-16 Matsushita Electric Industrial Co., Ltd. Vacuum cleaner
US5274878A (en) * 1991-07-23 1994-01-04 Cen-Tec Systems Inc. Remote control system for central vacuum systems
US5283922A (en) * 1991-09-03 1994-02-08 Horst K Lunder Gmbh Pipe cleaning tool
US5363534A (en) * 1992-06-19 1994-11-15 U.S. Philips Corporation Vacuum cleaner and suction tube for use with a vacuum cleaner
WO1996025788A1 (en) * 1995-02-16 1996-08-22 Philips Electronics N.V. Device for converting a resistance value into a control signal which depends on the resistance value, and electrical apparatus comprising such a device
US6212732B1 (en) * 1995-03-15 2001-04-10 Hitachi, Ltd. Vacuum cleaner and suction nozzle body therefor
US6239576B1 (en) * 1998-09-04 2001-05-29 Beamco, Inc. Safe Class-2 motor control circuit and method adapted for electric vacuum cleaning system suction motor and agitator motor control
US6282749B1 (en) 1995-03-15 2001-09-04 Hitachi, Ltd. Vacuum cleaner and suction nozzle body thereof cross reference to related application
US6324722B1 (en) * 1997-12-24 2001-12-04 Toshiba Tec Kabushiki Kaisha Vacuum-cleaner with recirculation of exhaust air
US20020152576A1 (en) * 2001-04-20 2002-10-24 Pro-Team, Inc. An Idaho Corporation Method and apparatus for improved use, maintenance and management of floor maintenance equipment
US20020165204A1 (en) * 1999-04-21 2002-11-07 Unitech Pharmaceuticals, Inc. Carboplatin analogs for cancer treatment
US20050254185A1 (en) * 2004-05-12 2005-11-17 Cunningham J V Central vacuum cleaning system control subsystems
GB2426922A (en) * 2003-07-25 2006-12-13 Milwaukee Electric Tool Corp Electrical Component
US20070079466A1 (en) * 2005-10-07 2007-04-12 Cube Investments Limited Central vacuum cleaner multiple vacuum source control
US20070079467A1 (en) * 2005-10-07 2007-04-12 Cube Investments Limited Central vacuum cleaner cross-controls
US7900315B2 (en) 2005-10-07 2011-03-08 Cube Investments Limited Integrated central vacuum cleaner suction device and control
US8096014B2 (en) 2005-10-07 2012-01-17 Cube Investments Limited Central vacuum cleaner control, unit and system with contaminant sensor
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US10582824B2 (en) 2004-05-12 2020-03-10 Cube Investments Limited Central vacuum cleaning system control subsystems
US7403360B2 (en) 2004-05-12 2008-07-22 Cube Investments Limited Central vacuum cleaning system control subsystems
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US8516653B2 (en) 2004-09-17 2013-08-27 Cube Investments Limited Cleaner handle and cleaner handle housing sections
US7900315B2 (en) 2005-10-07 2011-03-08 Cube Investments Limited Integrated central vacuum cleaner suction device and control
US8096014B2 (en) 2005-10-07 2012-01-17 Cube Investments Limited Central vacuum cleaner control, unit and system with contaminant sensor
US8732895B2 (en) 2005-10-07 2014-05-27 Cube Investments Limited Central vacuum cleaner multiple vacuum source control
US7958594B2 (en) 2005-10-07 2011-06-14 Cube Investments Limited Central vacuum cleaner cross-controls
US20070079467A1 (en) * 2005-10-07 2007-04-12 Cube Investments Limited Central vacuum cleaner cross-controls
US20070079466A1 (en) * 2005-10-07 2007-04-12 Cube Investments Limited Central vacuum cleaner multiple vacuum source control
DE102011004295A1 (en) * 2011-02-17 2012-08-23 BSH Bosch und Siemens Hausgeräte GmbH Remote control unit for floor cleaning appliance, has control unit that is arranged at handle of floor cleaning appliance, where manually operable operating unit is provided for controlling fan motor of floor cleaning appliance
DE102011004295B4 (en) * 2011-02-17 2013-09-05 BSH Bosch und Siemens Hausgeräte GmbH Remote control device for a floor cleaning device, floor cleaning device and method for operating a floor cleaning device

Also Published As

Publication number Publication date
USRE28920E (en) 1976-08-03
NL7217514A (en) 1973-07-02
SE363941B (en) 1974-02-04
NL168667C (en) 1981-11-16
GB1387898A (en) 1975-03-19
NL168667B (en) 1981-11-16
JPS4872620A (en) 1973-10-01
FR2170565A5 (en) 1973-09-14
US3956688A (en) 1976-05-11
DE2262296A1 (en) 1973-07-12

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