GB895567A - Electromagnetic vibratory unit - Google Patents

Electromagnetic vibratory unit

Info

Publication number
GB895567A
GB895567A GB3460060A GB3460060A GB895567A GB 895567 A GB895567 A GB 895567A GB 3460060 A GB3460060 A GB 3460060A GB 3460060 A GB3460060 A GB 3460060A GB 895567 A GB895567 A GB 895567A
Authority
GB
United Kingdom
Prior art keywords
flux
resonant frequency
natural resonant
load
armature assembly
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
GB3460060A
Inventor
John Francis Wahl
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.)
Wahl Clipper Corp
Original Assignee
Wahl Clipper 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
Priority to US734605A priority Critical patent/US2967253A/en
Application filed by Wahl Clipper Corp filed Critical Wahl Clipper Corp
Priority to GB3460060A priority patent/GB895567A/en
Publication of GB895567A publication Critical patent/GB895567A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
    • B26B19/282—Motors without a rotating central drive shaft, e.g. linear motors
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Dry Shavers And Clippers (AREA)

Abstract

895,567. Reciprocating motors. WAHL CLIPPER CORPORATION. Oct. 10, 1960, No. 34600/60. Class 35. [Also in Group XIV] A vibratory motor used, for example, in an electric hair clipper, designed so that the power consumption-proportional to the amplitude of vibration-and power output of the motor does not decrease appreciably with load, comprises a coil 16, energized by a pulsating current, and a resilient armature assembly 18 (Fig. 3), consisting of a magnetic armature 20, free to vibrate in the field of coil 16 and a resilient T-shaped work arm 22 having the ends of the cross-arms resiliently bent at right-angles to hold moving teeth mount 24. At no load the armature assembly has a natural resonant frequency at least 20% below that of the flux pulsations, whilst the bent-over portions of the work-arm have a natural resonant frequency greater than that of the flux pulsations, the total resilience of the entire armature assembly being said to be so chosen that at stalling loads its natural resonant frequency rises to not more than 50% above that of the driving flux, and that the stroke length of the magnetic armature is never less than one-third of the stroke under no-load conditions, the frequency of vibrations always being equal to that of the flux pulsations.
GB3460060A 1958-05-12 1960-10-10 Electromagnetic vibratory unit Expired GB895567A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US734605A US2967253A (en) 1958-05-12 1958-05-12 Electromagnetic vibratory unit
GB3460060A GB895567A (en) 1960-10-10 1960-10-10 Electromagnetic vibratory unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3460060A GB895567A (en) 1960-10-10 1960-10-10 Electromagnetic vibratory unit

Publications (1)

Publication Number Publication Date
GB895567A true GB895567A (en) 1962-05-02

Family

ID=10367664

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3460060A Expired GB895567A (en) 1958-05-12 1960-10-10 Electromagnetic vibratory unit

Country Status (1)

Country Link
GB (1) GB895567A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1332843A1 (en) * 2002-01-30 2003-08-06 Matsushita Electric Works, Ltd. Electric hair clipper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1332843A1 (en) * 2002-01-30 2003-08-06 Matsushita Electric Works, Ltd. Electric hair clipper

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