GB594770A - Improvements in or relating to electric motors of the oscillating armature type - Google Patents

Improvements in or relating to electric motors of the oscillating armature type

Info

Publication number
GB594770A
GB594770A GB789944A GB789944A GB594770A GB 594770 A GB594770 A GB 594770A GB 789944 A GB789944 A GB 789944A GB 789944 A GB789944 A GB 789944A GB 594770 A GB594770 A GB 594770A
Authority
GB
United Kingdom
Prior art keywords
armature
polepiece
bifurcation
oscillating
moves
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
Application number
GB789944A
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.)
MARTIN BROTHERS ELECTRIC CO
Original Assignee
MARTIN BROTHERS ELECTRIC CO
Filing date
Publication date
Application filed by MARTIN BROTHERS ELECTRIC CO filed Critical MARTIN BROTHERS ELECTRIC CO
Publication of GB594770A publication Critical patent/GB594770A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
    • H02K33/04—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

594,770. Oscillating motors. STEVENS, A. H. (Martin Bros. Electric Co.). April 27, 1944, No. 7899. [Class 35] In an A.C. motor with an armature oscillating from a position of maximum reluctance to one of two positions of minimum reluctance on either side and back in successive half cycles, the armature or field member has a number of salient faces of the same instantaneous polarity co-operating with one less polepiece on the other member. As shown, the armature A of a shaver motor is in the inoperative position, the springs 25, 34 being unequal in strength, and during the first half cycle moves to the dotted position with its end facing polepiece 39 while in the following half cycle, the armature end 12 moves to polepiece 40. In a modification, a single central polar projection replaces the polepieces 39 and 40 and co-operates alternately with the two forked ends of the armature, and there may be two coils, one on each vertical limb of the field magnet. In a modified form, the armature is a centrally pivoted bar wholly located between the bifurcated ends of a U-shaped field magnet, each end moving from one bifurcation on one end of the U-member to the other bifurcation of the same end.
GB789944A 1944-04-27 Improvements in or relating to electric motors of the oscillating armature type Expired GB594770A (en)

Publications (1)

Publication Number Publication Date
GB594770A true GB594770A (en) 1947-11-19

Family

ID=1629139

Family Applications (1)

Application Number Title Priority Date Filing Date
GB789944A Expired GB594770A (en) 1944-04-27 Improvements in or relating to electric motors of the oscillating armature type

Country Status (1)

Country Link
GB (1) GB594770A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668251A (en) * 1951-03-27 1954-02-02 Item Soc De Responsabilidad Lt Electromagnetic oscillatory motor provided with a cutting-action core
US3086133A (en) * 1957-12-23 1963-04-16 Sperry Rand Corp Motor for ladies' shavers
DE1149446B (en) * 1958-03-13 1963-05-30 Ferranti Ltd Torque motor
US3213301A (en) * 1962-12-21 1965-10-19 Sunbeam Corp Electric dry shaver
US3272998A (en) * 1963-06-07 1966-09-13 Sunbeam Corp Vibrator motor for electric shaver
US3290781A (en) * 1962-12-05 1966-12-13 Lang Geb Light-weight cutter block for electric shaver and method of manufacture
DE2343281A1 (en) * 1973-08-28 1975-03-20 Braun Ag Helical spring assembly for electric razor oscillating motor - has distortion at springs most effective points reduced by parallel end surfaces
GB2380617A (en) * 2001-05-15 2003-04-09 Wahl Clipper Corp Vibrator motor stator/mover
WO2010138464A1 (en) 2009-05-29 2010-12-02 Pacific Bioscience Laboratories, Inc. Motor for a personal skin care appliance

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668251A (en) * 1951-03-27 1954-02-02 Item Soc De Responsabilidad Lt Electromagnetic oscillatory motor provided with a cutting-action core
US3086133A (en) * 1957-12-23 1963-04-16 Sperry Rand Corp Motor for ladies' shavers
DE1149446B (en) * 1958-03-13 1963-05-30 Ferranti Ltd Torque motor
US3290781A (en) * 1962-12-05 1966-12-13 Lang Geb Light-weight cutter block for electric shaver and method of manufacture
US3213301A (en) * 1962-12-21 1965-10-19 Sunbeam Corp Electric dry shaver
US3272998A (en) * 1963-06-07 1966-09-13 Sunbeam Corp Vibrator motor for electric shaver
DE2343281A1 (en) * 1973-08-28 1975-03-20 Braun Ag Helical spring assembly for electric razor oscillating motor - has distortion at springs most effective points reduced by parallel end surfaces
GB2380617A (en) * 2001-05-15 2003-04-09 Wahl Clipper Corp Vibrator motor stator/mover
GB2380617B (en) * 2001-05-15 2005-06-22 Wahl Clipper Corp Vibrator motor.
US7239053B2 (en) 2001-05-15 2007-07-03 Wahl Clipper Corporation Vibrator motor
WO2010138464A1 (en) 2009-05-29 2010-12-02 Pacific Bioscience Laboratories, Inc. Motor for a personal skin care appliance
EP2436104A1 (en) * 2009-05-29 2012-04-04 Pacific Bioscience Laboratories, Inc. Motor for a personal skin care appliance
EP2436104A4 (en) * 2009-05-29 2017-03-29 L'Oréal Motor for a personal skin care appliance

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