GB1270131A - Improvements in or relating to electric motor assemblies - Google Patents

Improvements in or relating to electric motor assemblies

Info

Publication number
GB1270131A
GB1270131A GB36962/69A GB3696269A GB1270131A GB 1270131 A GB1270131 A GB 1270131A GB 36962/69 A GB36962/69 A GB 36962/69A GB 3696269 A GB3696269 A GB 3696269A GB 1270131 A GB1270131 A GB 1270131A
Authority
GB
United Kingdom
Prior art keywords
armature
arms
cam
oscillate
july
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
GB36962/69A
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.)
Braun GmbH
Original Assignee
Braun GmbH
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
Priority claimed from DE19681763728 external-priority patent/DE1763728C3/en
Application filed by Braun GmbH filed Critical Braun GmbH
Publication of GB1270131A publication Critical patent/GB1270131A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K33/00Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02Motors 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
    • H02K33/04Motors 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)
  • Dry Shavers And Clippers (AREA)

Abstract

1,270,131. Oscillating machines. BRAUN A.G. 23 July, 1969 [26 July, 1969], No. 36962/69. Heading H2A. In a motor, e.g. of a dry shaver, having a pendulum-type armature and adapted for use at two or more supply frequencies, the natural frequency of the oscillatory system is adjustable by additional mass(es) which can be secured to or released from the oscillatory system. Figs. 1, 3 show a dry shaver for use on 50 or 60 Hz supplies, comprising a casing 1 enclosing a motor having stator poles 13, 14 and coils 15, 16 mounted on a plate 11. The armature 18 is pivoted about a pin 17 and drives the shaver cutting head 6. Springs 19, 20 extend between the armature and fixed abutments 21, 22, the abutment 21 being adjustable. A pair of arms 31, 32 having cylindrical end portions 33, 34 (also Fig. 5, not shown) are also separately pivoted about pin 17, these arms constituting the additional masses. Between the two arms 31, 32 is provided a cam 43 fixed to a rotatable disc 42 (see Fig. 5). When the cam is in its upper position, as in Fig. 3, it forces the two arms away from the armature so that they do not oscillate with it. When the cam is in its lower position, however, as in Fig. 1, it does not engage the arms which are therefore urged, under the action of a spring 35, against the armature so as to oscillate with it. The cam is coupled to an adjusting knob accessible from outside the casing, and may also be coupled to a voltage selector to enable voltage and frequency to be selected together.
GB36962/69A 1968-07-26 1969-07-23 Improvements in or relating to electric motor assemblies Expired GB1270131A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681763728 DE1763728C3 (en) 1968-07-26 Electric oscillating armature motor with adjustable natural frequency

Publications (1)

Publication Number Publication Date
GB1270131A true GB1270131A (en) 1972-04-12

Family

ID=5697702

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36962/69A Expired GB1270131A (en) 1968-07-26 1969-07-23 Improvements in or relating to electric motor assemblies

Country Status (6)

Country Link
US (1) US3521093A (en)
AT (1) AT287110B (en)
CH (1) CH496353A (en)
FR (1) FR2013838A1 (en)
GB (1) GB1270131A (en)
NL (1) NL6911337A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT297529B (en) * 1970-03-02 1972-03-27 Philips Nv Device with a vibrating armature motor
DE2139419A1 (en) * 1970-09-14 1972-03-23 Braun Ag, 6000 Frankfurt Electrically powered razor
US3898732A (en) * 1974-03-13 1975-08-12 Philips Corp Dry shaver
AT353141B (en) * 1978-02-10 1979-10-25 Philips Nv DRY SHAVER
US6886255B2 (en) * 2002-09-17 2005-05-03 Wahl Clipper Corporation Fixed head clipper and disposable blade assembly
JP3972903B2 (en) * 2003-12-26 2007-09-05 松下電工株式会社 Electric razor
US20060059696A1 (en) * 2004-09-17 2006-03-23 Andis Company Controller for hand-held electrical device for cutting hair
JP4988777B2 (en) * 2009-01-15 2012-08-01 パナソニック株式会社 Electric razor
BRPI1008275B1 (en) * 2009-05-28 2020-10-20 Koninklijke Philips N.V pivoting arrangement for a razor and razor or trimmer
US20150333609A1 (en) * 2014-05-15 2015-11-19 L'oreal Oscillating motor for a personal care appliance
US10137582B2 (en) 2016-11-18 2018-11-27 Wahl Clipper Corporation Flux bridge for pivot motors

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1891486A (en) * 1931-09-21 1932-12-20 Wahl Clipper Corp Electromagnetic clipper regulation
US2259131A (en) * 1939-05-05 1941-10-14 Gen Electric Vibrator
NL11476C (en) * 1957-12-23
US3343011A (en) * 1965-04-05 1967-09-19 Sperry Rand Corp Oscillating electromagnetic motor

Also Published As

Publication number Publication date
DE1763728A1 (en) 1972-01-13
AT287110B (en) 1971-01-11
NL6911337A (en) 1970-01-29
CH496353A (en) 1970-09-15
FR2013838A1 (en) 1970-04-10
US3521093A (en) 1970-07-21
DE1763728B2 (en) 1974-10-17

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