US3266078A - Cleaning apparatus protection mechanism - Google Patents

Cleaning apparatus protection mechanism Download PDF

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Publication number
US3266078A
US3266078A US357174A US35717464A US3266078A US 3266078 A US3266078 A US 3266078A US 357174 A US357174 A US 357174A US 35717464 A US35717464 A US 35717464A US 3266078 A US3266078 A US 3266078A
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US
United States
Prior art keywords
belt
motor
teeth
gear
driving gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US357174A
Other languages
English (en)
Inventor
Raymond L Brown
John J Kowalewski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrolux Corp
Original Assignee
Electrolux Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electrolux Corp filed Critical Electrolux Corp
Priority to US357174A priority Critical patent/US3266078A/en
Priority to GB11688/65A priority patent/GB1035754A/en
Priority to NL6504079A priority patent/NL6504079A/xx
Priority to CH457765A priority patent/CH438610A/de
Priority to FR11767A priority patent/FR1429078A/fr
Application granted granted Critical
Publication of US3266078A publication Critical patent/US3266078A/en
Anticipated expiration legal-status Critical
Assigned to FIRST NATIONAL BANK OF BOSTON, THE reassignment FIRST NATIONAL BANK OF BOSTON, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EL ACQUISITION CORPORATION
Assigned to WESRAY CAPITAL CORPORATION, BANCBOSTON INVESTMENTS INC.,, WELLS FARGO & CO., FIRST BOSTON MEZZANINE INVESTMENT PARTNERSHIP - 9, FIRST BOSTON SECURITIES CORP. reassignment WESRAY CAPITAL CORPORATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ELECTROLUX CORPORATION A CORP. OF DE.
Assigned to FIRST BOSTON MEZZANINE INVESTMENT PARTNERSHIP - 9, WESRAY CAPITAL CORPORATION, BANCBOSTON INVESTMENTS INC., FIRST BOSTON SECURITIES CORP., WELLS FARGO & CO. reassignment FIRST BOSTON MEZZANINE INVESTMENT PARTNERSHIP - 9 SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ELECTROLUX CORPORATION
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0405—Driving means for the brushes or agitators
    • A47L9/0411—Driving means for the brushes or agitators driven by electric motor
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02—Floor surfacing or polishing machines
    • A47L11/20—Floor surfacing or polishing machines combined with vacuum cleaning devices
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4041—Roll shaped surface treating tools
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4063—Driving means; Transmission means therefor
    • A47L11/4069—Driving or transmission means for the cleaning tools
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4094—Accessories to be used in combination with conventional vacuum-cleaning devices
    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • A47L5/30—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with driven dust-loosening tools, e.g. rotating brushes
    • 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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0427—Gearing or transmission means therefor
    • A47L9/0444—Gearing or transmission means therefor for conveying motion by endless flexible members, e.g. belts
    • 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
    • A47L9/2847—Surface treating elements
    • 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
    • A47L9/2889—Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/18—Means for guiding or supporting belts, ropes, or chains

Definitions

  • the above described cleaning nozzle greatly improves surface cleaning, particularly of certain types of synthetic materials, by using the beneficial effects of suction and brush agitation simultaneously.
  • the rotating brush agitates the carpet, fi-uflFs its nap, and dislodges dust, dirt, lint and litter from the carpet so that the applied suction can carry the dislodged matter away from the suction nozzle to a suitable collector, such as a dust bag remotely situated in a tank or canister unit.
  • a toothed belt which is meshed wit-h the teeth of a motor-driven pinion gear, or driving gear, and a brush-rotating pinion gear, or driven gear.
  • a positive non-slipping driving action is obtained. More torque is transmitted from the driving pinion to the driven pinion and rotary brush. Also, with such a positive drive arrangement the rotary brush will not become stalled or jammed very easily.
  • the rotary brush does become stalled; for example, when metallic objects such as hair clips, nails or coins become lodged between the brush and a wall portion of the suction nozzle.
  • the rotary brush will stall when a suflicient amount of a rug fringe or the stringy ends of a frayed carpet become wound about the brush. .
  • the section of the now stationary belt which normally meshes with the rotating motor-driven pinion gear, is moved outward from the driven pinion gear due to the high torque applied to the belt by the driven pinion gear thereby removing most of the belt teeth from meshing engagement with the rotating pinion gears teeth, leaving one, or a few, of the belt teeth meshed with the teeth on the rotating pinion gear.
  • the main object of the present invention is to prevent belt breakage and motor burnout in apparatus employing motor driven belt transmissions such as, for example, in the vacuum cleaner apparatus hereinbefore described.
  • the 'belt when it is subjected to the overload experienced by the rotary brush, overloads the motor-driven pinion gear and its driving motor so that the circuit breaker can operate to electrically disconnect the motor thereby preventing belt breakage and motor burnout.
  • FIG. 1 is a plan view, cut away for purposes of clarity, of a surface cleaning suction nozzle incorporating the subject invention
  • FIG. 2 shows a side section of the surface cleaning suction nozzle of FIG. 1, as viewed along the section line 2-2 of FIG. 1;
  • FIG. 3 is a fragmentary view, somewhat enlarged, showing a portion of the section shown in FIG. 2;
  • FIG. 4 is another side section of the surface cleaning suction nozzle of FIG. 1, as viewed along the section line 4-4 of FIG. 1;
  • FIG. 5 is a side section on :a reduced scale of the surface cleaning suction nozzle of FIG. 1, as viewed along the section line 5-5 of FIG. 1; and,
  • FIG. 6 is a somewhat diagrammatic illustration of a prior art belt drive arrangement showing the activity of the various elements of the belt drive arrangement as the suction nozzles rotary brush stalls.
  • FIGS. 15 the reference number 10 designates a surface cleaning suction nozzle in which the subject invention is incorporated.
  • the nozzle 10 includes a motor 12, a circuit breaker 14 for protecting the motor and a surface agitating lbrush 16 which is rotated by the motor through a belt drive arrangement hereinafter described.
  • a hollow wand 18 is coupled with the nozzle 10 as shown.
  • a small diameter conduit 20 integral with, but separate from, a large diameter central duct 22 of the wand 18 has an insulated two-wire cord 24 passing therethrough. The cord 24 supplies electrical energy to the motor 12 through its protective circuit breaker 14.
  • the wand 18 When the nozzle 10 is to be readied for use the wand 18 is coupled to a tank unit (not shown) of a vacuum cleaner through a suction hose (not shown) and the electric cord 24 is connected with another cord (not shown) which is carried along the suction hose and then into the vacuum cleaners tank unit to a pair of electrically energized terminals. operationally, rotation of the brush 16 dislodges dirt and dust from the surface being cleaned and this dislodge-d matter is drawn by suction through the nozzle 10, the wands duct 22 and the suction hose into a dust bag remotely located in the vacuum cleaner tank unit.
  • the nozzle 10 includes a base member 26, a top cover 28 and a bottom cover plate 3%.
  • the base member 26, which may be an aluminum alloy casting, has internally threaded bosses 32 formed on top thereof. These bosses 32 serve as mounts for the motor- 12.
  • the end bells 34 and 36 of the motor 12 have apertures so that screws 38 can pass therethrough and thread ably engage the internal threads in the bosses 32.
  • Rubber washers 40 which serve as vibration dampers, are located between the screw receiving parts of the end bells and the heads of the screws 38, as well as between the screw receiving parts of the end bells and the top of the bosses 32.
  • the base member 26 has formed therein a semicylindrical wall portion 42 (FIG.
  • the bottom cover plate 39 has a longitudinal slot 50 therein through which dust, and dirt from a surface to be cleaned (e.g., a carpet or rug) enters the nozzle 10. After entry through the slot 50 the dirt and dust enters the space 52 (FIG. 5) and thereafter is carried away by suction through the duct 22 in wand 13.
  • a surface to be cleaned e.g., a carpet or rug
  • toothed pinion gear 56 (driven gear) which when rotated rotates the brush 16.
  • an end section of the motors armature shaft is hobbed to form another toothed pinion gear 54 (driving gear).
  • An endless belt 58 having a plurality of teeth 60 60 on the inside surface thereof is meshingly engaged with the toothed driving gear 54 and the toothed driven gear 56.
  • the energization of the motor 12 rotates the driving gear 54 which drives the belt 58.
  • the belt rotates the driven gear 56 which causes rotation of the brush 16.
  • the arrows in FIG. 2 indicate the rotational directions of the driving gear 54, the belt 58 and the driven gear 56.
  • the arcuate shroud 62 which, as shown in FIGS. 1-4, may be integrally formed with the die-cast end bell 34 of the motor. As shown in FIG. 3 the arcuate shroud 62 is spaced a small distance from the smooth outside surface of the belt 58 and the surface of the shroud situated opposite the smooth belt surface is also smooth.
  • the arcuate shroud 62 lies substantially on the circumference of a circle which is concentric to the circumference of the driving gear 54.
  • FIG. 6 is an illustration of a prior art belt drive arrangement which does not include an arcuate shroud for ensuring that the belt teeth stay in engagement with the teeth of the driving gear 54 when the brush 16 stalls.
  • the driven gear 56 is not rotating because the brush 16 coupled therewith has be.- come stalled.
  • the driving gear 54 on the armature of the motor 12 rotates at high speed and the teeth of the driving gear 54 successively slip out of engagement with the belt teeth, the belt, as shown, moving outwardly from the gear 54 so that the few remaining teeth of the gear 54 are but partially meshed with the teeth of the belt 58.
  • Belt 58 does not rotate. Rather, as indicated in the dotted line representation of FIG.
  • the slack side of the belt (upper side) vibrates upwardly and downwardly.
  • an arcuate shroud such as shroud 62
  • that portion of the belt which engages the driving gear 54 is forcibly maintained in meshing engagement with the driving gear.
  • the stalling torque of the brush is transmitted through the belt 58 to the driving gear 54 to overload the motor thereby enabling the circuit breaker 14 to disconnect the motor from the electric circuit, thereby preventing breakage of the belt and damage to the motor.
  • the reset button 64 on the breaker 14 can be pushed to reenergize the motor.
  • the motor 12 which has been used is a universal motor having approximately A HI. output, operating from an input source of 110 volts, 60 cycles, single phase.
  • the armature speed of the motor is between 16,000 and 17,000 r.p.m. when the brush 16 is not rotating against the surface to be cleaned.
  • the belt 58 is a substantially non-stretchable belt having a pitch circumference of approximately 8.6 inches with 46 teeth on the inside surface thereof.
  • the belt is fashioned from neoprene rubber having a nylon fabric reinforcing the tooth faces and is also laterally reinforced between the body of the belt and the beginning of the toothed structures by synthetic fibres.
  • the driving pinion gear 54 which is formed integral with the armature shaft has an outside diameter of approximately 0.36 inch and has 6 teeth thereon.
  • the driven gear 56 has an outside diameter of approximately 1.1 inches and has 19 teeth on its circumference.
  • a load-carrying gear driven by said belt, means for maintaining the teeth of the belt in meshing engagement with the teeth of the gear and preventing relative circumferential disengagement therebetween in the event that the belt becomes overloaded to positively overload the motor whereby the current input to said motor is increased, and means for electrically deizing the motor in response to the overload current input.
  • an electric motor a circuit breaker electrically connected with said motor; a toothed driving gear rotated directly by said motor; a toothed driven gear; a load rotated directly by said driven gear; a toothed endless belt meshed with the teeth of said driving and driven gears, said endless belt being rotated by said driving gear and rotating said driven gear, and means for preventing disengagement of the teeth of said endless belt from the teeth of said driving gear and preventing relative circumferential disengagement therebetween in the event that sai-d driven gear becomes stalled due to said load becoming stalled in order to stall said driving gear and overload said motor whereby the current input to said motor is increased thereby causing said circuit breaker to electrically deenergize said motor in response to the overload current input.
  • a surface cleaning suction nozzle a surface-agitating rotary brush, a driven toothed gear directly connected to said brush for rotating said brush, an electric motor, a toothed driving gear directly connected to said motor for rotation thereby, an endless belt having teeth on the inside surface thereof in meshing engagement with said driven and driving gears, said belt having a relatively smooth outside surface, a stationary smooth-surfaced arcuate shroud which lies on the circumference of a circle which is concentric with the circumference of said driving gear, the smooth surface of said shroud being arranged adjacent to but spaced a small distance from the smooth surface of that section of belt on the rotating driving gear which becomes slack, said smooth-surfaced shroud abutting said slack belt sections smooth surface and preventing the teeth in the slack belt section from moving out of meshing engagement with the teeth of the driving gear and preventing relative circumferential disengagement therebetween in the event that the rotary brush becomes overloaded whereby the belt transmits the overload to the driving gear to overload the motor to

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
US357174A 1964-04-03 1964-04-03 Cleaning apparatus protection mechanism Expired - Lifetime US3266078A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US357174A US3266078A (en) 1964-04-03 1964-04-03 Cleaning apparatus protection mechanism
GB11688/65A GB1035754A (en) 1964-04-03 1965-03-19 Protective devices for electrically-driven apparatus
NL6504079A NL6504079A (de) 1964-04-03 1965-03-31
FR11767A FR1429078A (fr) 1964-04-03 1965-04-02 Appareil de protection pour moteur électrique notamment pour aspirateurs
CH457765A CH438610A (de) 1964-04-03 1965-04-02 Elektromotorisch angetriebenes Gerät mit einem gezahnten endlosen Treibriemen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US357174A US3266078A (en) 1964-04-03 1964-04-03 Cleaning apparatus protection mechanism

Publications (1)

Publication Number Publication Date
US3266078A true US3266078A (en) 1966-08-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
US357174A Expired - Lifetime US3266078A (en) 1964-04-03 1964-04-03 Cleaning apparatus protection mechanism

Country Status (4)

Country Link
US (1) US3266078A (de)
CH (1) CH438610A (de)
GB (1) GB1035754A (de)
NL (1) NL6504079A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190923A (en) * 1976-12-16 1980-03-04 Societe Anonyme Dite: Etablissements Georges Olivier Appliances for cleaning various types of floors by suction or motorized beating or brushing
US4245370A (en) * 1979-01-08 1981-01-20 Whirlpool Corporation Control circuit for protecting vacuum cleaner motor from jammed beater brush damage
US5373598A (en) * 1993-06-14 1994-12-20 The Hoover Company Cleaner with performance indicator
US5580325A (en) * 1994-03-18 1996-12-03 Honda Giken Kogyo Kabushiki Kaisha Tooth skip preventing structure of endless power transmitting means
US20110203073A1 (en) * 2010-02-23 2011-08-25 Johnson Electric S.A. Brush roll of a vacuum cleaner
WO2015192074A1 (en) * 2014-06-13 2015-12-17 Aerus Llc Vacuum brush drive
USD757524S1 (en) 2014-06-13 2016-05-31 Aerus Llc Drive pulley
US20190343350A1 (en) * 2016-11-08 2019-11-14 Ecovacs Robotics Co., Ltd. Self-moving ground processing apparatus and suction nozzle
US10508718B2 (en) * 2016-09-30 2019-12-17 Honda Motor Co., Ltd. Internal combustion engine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3017072A1 (de) * 1980-05-03 1981-11-05 Vorwerk & Co Interholding Gmbh, 5600 Wuppertal Antribseinrichtung fuer bodenpflegegeraet
GB2298317B (en) * 1995-02-24 1997-12-17 Alps Electric Co Ltd Sliding variable resistor
GB2440717A (en) * 2006-08-08 2008-02-13 Dyson Technology Ltd Circuit breaker system for a vacuum cleaner

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1972695A (en) * 1929-09-13 1934-09-04 Edwin G Staude Automatic closure control
US2461261A (en) * 1947-01-27 1949-02-08 Gen Electric Overload protection device for power transmission apparatus
US2596672A (en) * 1950-11-17 1952-05-13 Armstrong Cork Co Mixer
US2674896A (en) * 1951-09-22 1954-04-13 Advance Machine Co Drive unit for floor polishing machines and the like
US2718153A (en) * 1953-06-02 1955-09-20 George A Dean Drive mechanism
US2726364A (en) * 1952-04-12 1955-12-06 Nolan Company Overload-controlling mechanism for electric motor-driven apparatus
US2766417A (en) * 1952-08-09 1956-10-09 Nolan Company Belt drive actuated motor controlling switch mechanism

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1972695A (en) * 1929-09-13 1934-09-04 Edwin G Staude Automatic closure control
US2461261A (en) * 1947-01-27 1949-02-08 Gen Electric Overload protection device for power transmission apparatus
US2596672A (en) * 1950-11-17 1952-05-13 Armstrong Cork Co Mixer
US2674896A (en) * 1951-09-22 1954-04-13 Advance Machine Co Drive unit for floor polishing machines and the like
US2726364A (en) * 1952-04-12 1955-12-06 Nolan Company Overload-controlling mechanism for electric motor-driven apparatus
US2766417A (en) * 1952-08-09 1956-10-09 Nolan Company Belt drive actuated motor controlling switch mechanism
US2718153A (en) * 1953-06-02 1955-09-20 George A Dean Drive mechanism

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190923A (en) * 1976-12-16 1980-03-04 Societe Anonyme Dite: Etablissements Georges Olivier Appliances for cleaning various types of floors by suction or motorized beating or brushing
US4245370A (en) * 1979-01-08 1981-01-20 Whirlpool Corporation Control circuit for protecting vacuum cleaner motor from jammed beater brush damage
US5373598A (en) * 1993-06-14 1994-12-20 The Hoover Company Cleaner with performance indicator
US5580325A (en) * 1994-03-18 1996-12-03 Honda Giken Kogyo Kabushiki Kaisha Tooth skip preventing structure of endless power transmitting means
US20110203073A1 (en) * 2010-02-23 2011-08-25 Johnson Electric S.A. Brush roll of a vacuum cleaner
WO2015192074A1 (en) * 2014-06-13 2015-12-17 Aerus Llc Vacuum brush drive
US9339159B2 (en) 2014-06-13 2016-05-17 Aerus Llc Vacuum brush drive
USD757524S1 (en) 2014-06-13 2016-05-31 Aerus Llc Drive pulley
CN106659340A (zh) * 2014-06-13 2017-05-10 Aerus有限责任公司 真空吸尘器刷驱动器
CN106659340B (zh) * 2014-06-13 2019-12-31 Aerus有限责任公司 真空吸尘器刷驱动器
US10508718B2 (en) * 2016-09-30 2019-12-17 Honda Motor Co., Ltd. Internal combustion engine
US20190343350A1 (en) * 2016-11-08 2019-11-14 Ecovacs Robotics Co., Ltd. Self-moving ground processing apparatus and suction nozzle

Also Published As

Publication number Publication date
CH438610A (de) 1967-06-30
NL6504079A (de) 1965-10-04
GB1035754A (en) 1966-07-13

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