GB515090A - Improvements in and relating to electro-acoustic transmitters - Google Patents

Improvements in and relating to electro-acoustic transmitters

Info

Publication number
GB515090A
GB515090A GB13287/38A GB1328738A GB515090A GB 515090 A GB515090 A GB 515090A GB 13287/38 A GB13287/38 A GB 13287/38A GB 1328738 A GB1328738 A GB 1328738A GB 515090 A GB515090 A GB 515090A
Authority
GB
United Kingdom
Prior art keywords
coil
laminations
electro
hughes
former
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
GB13287/38A
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.)
Hughes Henry and Son Ltd
Original Assignee
Hughes Henry and Son Ltd
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 Hughes Henry and Son Ltd filed Critical Hughes Henry and Son Ltd
Priority to GB13287/38A priority Critical patent/GB515090A/en
Priority to US271025A priority patent/US2271667A/en
Publication of GB515090A publication Critical patent/GB515090A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

515,090. Electro-acoustic transmitters ; magnets. HUGHES & SON, Ltd., H., SPROULE, D. O., and HUGHES, A. J. May 4, 1938, No. 13287. [Class 40 (iv)] [Also in Group XXXV] An electro-acoustic transmitter &c. of the moving-coil type for echo-sounding has its core composed of two series of laminations h, j, so arranged one within the other as to form a tunnel for the polarizing coil b and an annular gap c for the driver coil s. The laminations are formed with inclined surfaces d, e, which cooperate with similarly shaped surfaces p, r, on a base plate f and a clamping ring g. The laminations, which are provided with an insulating layer, may be of tapered section. Alternatively, peripheral spacers are provided be-, tween the laminations h, j. The coil s oh the former t may be replaced by a cylindrical metal member in which the signal currents are induced by transformer action from the energising coil b to which the signal currents are supplied in addition to intermittent energising current. The former t, or the equivalent metal member, is connected to a diaphragm supported in a housing w which carries a horn v and is attached to the ring g and base plate f. The assembled core may'be impregnated with a natural or artificial insulating substance.
GB13287/38A 1938-05-04 1938-05-04 Improvements in and relating to electro-acoustic transmitters Expired GB515090A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB13287/38A GB515090A (en) 1938-05-04 1938-05-04 Improvements in and relating to electro-acoustic transmitters
US271025A US2271667A (en) 1938-05-04 1939-05-01 Electroacoustic transmitter and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB13287/38A GB515090A (en) 1938-05-04 1938-05-04 Improvements in and relating to electro-acoustic transmitters

Publications (1)

Publication Number Publication Date
GB515090A true GB515090A (en) 1939-11-27

Family

ID=10020214

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13287/38A Expired GB515090A (en) 1938-05-04 1938-05-04 Improvements in and relating to electro-acoustic transmitters

Country Status (2)

Country Link
US (1) US2271667A (en)
GB (1) GB515090A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3018467A (en) * 1955-11-07 1962-01-23 Harris Transducer Corp Resonant reactively operating variable position transducer

Also Published As

Publication number Publication date
US2271667A (en) 1942-02-03

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