GB685818A - Spirally wound variable inductance devices - Google Patents

Spirally wound variable inductance devices

Info

Publication number
GB685818A
GB685818A GB8925/51A GB892551A GB685818A GB 685818 A GB685818 A GB 685818A GB 8925/51 A GB8925/51 A GB 8925/51A GB 892551 A GB892551 A GB 892551A GB 685818 A GB685818 A GB 685818A
Authority
GB
United Kingdom
Prior art keywords
contact
spirally wound
inductance
april
brush
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
GB8925/51A
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.)
Duracell Inc USA
Original Assignee
PR Mallory and Co Inc
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 PR Mallory and Co Inc filed Critical PR Mallory and Co Inc
Publication of GB685818A publication Critical patent/GB685818A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/005—Inductances without magnetic core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/04—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by relative movement of turns or parts of windings

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

685,818. Inductances. MALLORY & CO., Inc., P. R. April 17, 1951 [April 18, 1950], No. 8925/51. Class 38 (ii). A variable inductance comprises a rectangular sectioned conductor 60 which is wound in a spiral manner on the face of an insulating member 27 so that the edge 64 is fixedly embedded in the member. A moving contact member comprising two relatively movable parts 113, 114 is adapted to be rotated by means of a shaft member 82 so that as the contact member is rotated the brush 116 travels over the spiral so as to alter the effective length of the conductor thereby to vary the inductance of the device. The member 113 is in contact during rotation with a terminal 38 by means of a brush 118, the other terminal 37 being fixedly connected to the end 61 of the spirally wound coil. Stop mechanism is provided to give end limits to the travel of the moving contact and also to give intermediate positions. A number of such inductance units may be mounted one behind the other and the contact members driven from a common shaft, the whole assembly being enclosed in a dust-proof container.
GB8925/51A 1950-04-18 1951-04-17 Spirally wound variable inductance devices Expired GB685818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US685818XA 1950-04-18 1950-04-18

Publications (1)

Publication Number Publication Date
GB685818A true GB685818A (en) 1953-01-14

Family

ID=22083451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8925/51A Expired GB685818A (en) 1950-04-18 1951-04-17 Spirally wound variable inductance devices

Country Status (1)

Country Link
GB (1) GB685818A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068770B (en) * 1959-11-12
DE1105930B (en) * 1957-11-07 1961-05-04 Brayhead Ascot Ltd Process for the production of individual contacts on the edge of panels or panes made of insulating material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068770B (en) * 1959-11-12
DE1105930B (en) * 1957-11-07 1961-05-04 Brayhead Ascot Ltd Process for the production of individual contacts on the edge of panels or panes made of insulating material

Similar Documents

Publication Publication Date Title
GB685818A (en) Spirally wound variable inductance devices
GB382076A (en) Improvements in electrical circuit-tuning devices
GB956284A (en) Improvements in or relating to tuning devices comprising a substantially circular line
GB657879A (en) Improvements relating to variometers
SU125826A1 (en) High Speed Switch
JPS5260343A (en) Transistor high-voltage magneto
GB697381A (en) Improvements in or relating to wire-wound variable electric impedance devices havinga continuously variable tapping
AT166937B (en) Contact device for dynamo-electric ignition devices with spring drive
GB689488A (en) High voltage transformers
ES323272A3 (en) Variable coupling electric transformer. (Machine-translation by Google Translate, not legally binding)
CA465115A (en) Bender type electromechanical device with dielectric operating element
CA455747A (en) Electrical switch device
CA454612A (en) Electric circuit interrupter and disconnecting device
CA461758A (en) High tension terminal
GB558728A (en) Improvements in variable inductances
CA454076A (en) Electrical contact assembly
CA468247A (en) Coils constituted by wound conductors
CA448502A (en) Spring winding device
GB255180A (en) Improvements in tuning devices for wireless apparatus
CA469744A (en) Magnetic motor starting switches
AU146111B2 (en) Improvements in and connected with resilient metal leaf springs for electrical switching apparatus
CA454473A (en) Electric circuit interrupter
CA454808A (en) Electric circuit interrupter
CA455856A (en) Electric circuit interrupter
CA456150A (en) Electric circuit interrupter