GB147936A - Improvements in submarine sound producing devices - Google Patents

Improvements in submarine sound producing devices

Info

Publication number
GB147936A
GB147936A GB19991/20A GB1999120A GB147936A GB 147936 A GB147936 A GB 147936A GB 19991/20 A GB19991/20 A GB 19991/20A GB 1999120 A GB1999120 A GB 1999120A GB 147936 A GB147936 A GB 147936A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
exciter
sound producing
producing devices
frequency
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
GB19991/20A
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.)
Signal GmbH
Original Assignee
Signal 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
Application filed by Signal GmbH filed Critical Signal GmbH
Publication of GB147936A publication Critical patent/GB147936A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

147,936. Signal Ges. June 14, 1915, [Convention date]. Subaqueous audible signals.-When a transmitter diaphragm E is vibrated by an exciter having a frequency much higher than the fundamental frequency of the diaphragm, the latter generally vibrates in an overtone mode, with a nodal circle. According to the present invention this is prevented by stiffening the portion of the diaphragm adjacent to the nodal circle, either by an annular thickening of the diaphragm or by means of radial ribs R. The exciter consists of a divided electromagnet. the two halves of which are fixed to masses C<1>, C<2> connected by elastic rods D, forming a system having the desired natural frequency of vibration. The invention is applicable to diaphragms of square or other non-circular shape.
GB19991/20A 1915-06-14 1920-07-09 Improvements in submarine sound producing devices Expired GB147936A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1589962X 1915-06-14

Publications (1)

Publication Number Publication Date
GB147936A true GB147936A (en) 1921-09-15

Family

ID=7736613

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19991/20A Expired GB147936A (en) 1915-06-14 1920-07-09 Improvements in submarine sound producing devices

Country Status (2)

Country Link
US (1) US1589962A (en)
GB (1) GB147936A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2956538A (en) * 1957-12-10 1960-10-18 Gen Ultrasonics Company Diaphragm vibration control
US3466017A (en) * 1967-12-19 1969-09-09 Mark A Malvin Ultrasonic wave generator
US3846650A (en) * 1970-10-08 1974-11-05 Dynamics Corp Massa Div Electroacoustic transducer of the vibratile diaphragm type with controlled uniformity of performance characteristics and method for controlling uniformity
US3983425A (en) * 1975-09-15 1976-09-28 The United States Of America As Represented By The Secretary Of The Navy Tuned plate acoustic projector with piezoelectric driver
US4193647A (en) * 1978-09-11 1980-03-18 Telex Communications, Inc. Piezoelectric ceramic transducers with uniform resonant frequency

Also Published As

Publication number Publication date
US1589962A (en) 1926-06-22

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