US3541485A - Control device for electrical body care - Google Patents

Control device for electrical body care Download PDF

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Publication number
US3541485A
US3541485A US743081A US74308168A US3541485A US 3541485 A US3541485 A US 3541485A US 743081 A US743081 A US 743081A US 74308168 A US74308168 A US 74308168A US 3541485 A US3541485 A US 3541485A
Authority
US
United States
Prior art keywords
housing
bar
magnet
body care
permanent magnet
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
US743081A
Other languages
English (en)
Inventor
Michel A Moret
Claude R Rosset
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.)
AESUP Ets
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AESUP Ets
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 AESUP Ets filed Critical AESUP Ets
Application granted granted Critical
Publication of US3541485A publication Critical patent/US3541485A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/225—Handles or details thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
    • A61C17/3418—Rotation around the axis of the toothbrush handle

Definitions

  • This disclosure concerns a control device for an electrical body care apparatus having a source of magnetic flux formed by a permanent magnet slidingly mounted inside the casing of the apparatus, with means provided for bringing said magnet into two positions, one for opening and the other for closing an operating switch.
  • the latter comprises a waterproof housing containing a pair of contact terminals and a bar of magnetizable material having a conductive surface facing the terminals. The bar is actuated by the magnet, and is slidably guided by the walls of the housing between limits determined by the contact terminals and an end wall of the housing.
  • This invention is concerned with a control device for an electrical body care device and constitutes an improvement over that disclosed in co-pending application Ser. No. 638,997 (Swiss patent application No. 7,413/ 66) which has for subject a control device for an electrical body care apparatus comprising a switch with magnetic contact blades and at least one source of a magnetic flux for the control of this switch.
  • the present invention has for its object an improvement over the device of that application wherein the source is formed by a permanent magnet slidingly mounted inside the casing of the apparatus, means being provided for bringing said magnet into two positions, one for the opening and the other for closing the switch.
  • FIG. 1 is a partial longitudinal cross section of an apparatus for body care seen from one side.
  • FIG. 2 is a partial longitudinal cross sectional view of this apparatus seen from above.
  • FIG. 3 is a cross section taken along line IIIIII of FIG. 1.
  • the body care apparatus shown in the drawing comprises a casing 1 and in said casing means for driving an accessory, for example a tooth brush, which can be secured at the end of shaft 2.
  • the other end of this shaft is attached on a cylindrical rotor 3 of an oscillating electric motor comprising an energizing coil 4 surrounding a core 5, the core having two pole pieces 6 and 7 extending to and partially encircling 'a rotor 3.
  • One of the extremities of each of pole pieces 6, 7 is fixed on the edge of an element 8 of insulating material in which is pivoted shaft 2, while the other extremity of each piece is secured to core by a mass of insulating material 9 in which is also embedded the coil 4.
  • the supply cord 10 comprises two wires 11 and 12. As shown in FIG. 3, the wire 11 is directly connected to one end 13 of coil 4, while wire 12 is connected to the other end 14 of the coil through the switch of the invention. Specifically, wire 14 is connected to the lower end of terminal 15 and wire 12 is connected to the lower end of terminal 16 of the switch.
  • This switch is constituted by fixed conductive terminals 3,541,485 Patented Nov. 17, 1970 15 and 16 which can be connected by a movable bar 17.
  • This bar is made of magnetizable material and the side thereof in contact with the terminals is covered with a good conductor in order to obtain a better contact when the bar is held against terminals 15 and 16 under the urging of helical spring 18.
  • Terminals 15 and 16 extend into a watertight housing 19 of insulating material, and bar 17 and spring 18 are mounted therein.
  • the connections of wires 11, 12 to terminals 15, 16 are embedded in insulating material, and this may be part of the mass of insulating material 9 in which coil 4 is embedded. This arrangement makes it possible to prevent all dangers of penetration of water or water vapor into the parts of the apparatus receiving a voltage.
  • Magnetizable bar 17 is subjected to a magnetic field emanating from a permanent magnet 20' which can slide longitudinally and which is located between pole pieces 6 and 7 on a fiat section of the insulating mass 9 of the coil.
  • Magnet 20 has the shape of a U and its two poles are disposed on each side of spring 18 outside the watertight housing 19. This magnet is attached by an insulating piece 21 to a rod 22 mounted for longitudinal movement inside casing 1. Rod 22 terminates in a point 23 and is subjected to the urging of a spring 24 which presses the point 23 against a sliding piece 25.
  • Piece 25 slides perpendicularly to the axis of the apparatus and is controlled by two pushers 26 constituted by a flexible element 27 the periphery of which is fluid-tightly secured to casing 1 and which has in its central part a pusher head 28 passing through the casing in a corresponding opening.
  • the switch mechanism is very simple.
  • Permanent magnet 20 moves rectilinearly toward and away from one end of the waterproof housing 19.
  • Fixed contact terminals 15 and 16 in the housing 19 are spaced apart laterally of the direction of movement of magnet 20.
  • the bar 17 is slidably guided by the walls of housing 19 for rectilinear movement in the same direction as magnet 20, between limits determined by the contact terminals 15, 16 and the adjacent end wall of the housing.
  • Spring 18 biases bar 17 toward the limit of travel away from magnet 20. Movement of magnet 20 toward the housing 19 pulls bar 17 to its limit of travel nearer the magnet, and movement of the magnet away from the housing allows bar 17 to return to its other limit.
  • switch means mounted in said casing for making and breaking a circuit between said connecting means and motor which comprises (a) a Watertight housing of insulating material,
  • said permanent magnet and said bar being arranged and adapted so that movement of the magnet toward said housing pulls the bar to the limit nearer the magnet and movement away from the housing allows the bar to return to the other limit

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Slide Switches (AREA)
US743081A 1967-07-07 1968-07-08 Control device for electrical body care Expired - Lifetime US3541485A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH972667A CH495127A (fr) 1967-07-07 1967-07-07 Dispositif de commande d'un appareil électrique pour soins corporels

Publications (1)

Publication Number Publication Date
US3541485A true US3541485A (en) 1970-11-17

Family

ID=4355002

Family Applications (1)

Application Number Title Priority Date Filing Date
US743081A Expired - Lifetime US3541485A (en) 1967-07-07 1968-07-08 Control device for electrical body care

Country Status (4)

Country Link
US (1) US3541485A (fr)
CH (1) CH495127A (fr)
DE (1) DE1765726B1 (fr)
FR (1) FR1600823A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900710A (en) * 1973-10-01 1975-08-19 John Potter Squeezably actuated general purpose electric switch

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051337A (en) * 1976-01-27 1977-09-27 Cavitron Corporation Dental handpiece switch
DE2839911A1 (de) * 1978-09-14 1980-03-27 Rowenta Werke Gmbh Elektrische zahnbuerste

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767278A (en) * 1951-06-29 1956-10-16 Collins Douglas Magnetic lock switch for starter and ignition circuits
US3020366A (en) * 1960-02-15 1962-02-06 Dolph John Donald Safety lamp socket
US3176097A (en) * 1963-07-01 1965-03-30 Gen Electric Pushbutton magnetic switch with a memory
US3316379A (en) * 1965-07-29 1967-04-25 Texas Instruments Inc Seal for push button actuated device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD26002A (fr) *
FR1129715A (fr) * 1955-08-05 1957-01-24 Appareil de contact électrique
US3025372A (en) * 1958-08-07 1962-03-13 Benjetsky Louis Reciprocating type actuating means
DE1162936B (de) * 1962-04-27 1964-02-13 Aesup Ets Elektrisch betriebenes Geraet zur Koerperpflege

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767278A (en) * 1951-06-29 1956-10-16 Collins Douglas Magnetic lock switch for starter and ignition circuits
US3020366A (en) * 1960-02-15 1962-02-06 Dolph John Donald Safety lamp socket
US3176097A (en) * 1963-07-01 1965-03-30 Gen Electric Pushbutton magnetic switch with a memory
US3316379A (en) * 1965-07-29 1967-04-25 Texas Instruments Inc Seal for push button actuated device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900710A (en) * 1973-10-01 1975-08-19 John Potter Squeezably actuated general purpose electric switch

Also Published As

Publication number Publication date
DE1765726B1 (de) 1971-12-16
CH495127A (fr) 1970-08-31
FR1600823A (fr) 1970-08-03

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