GB334432A - - Google Patents

Info

Publication number
GB334432A
GB334432A GB32355/29A GB3235529A GB334432A GB 334432 A GB334432 A GB 334432A GB 32355/29 A GB32355/29 A GB 32355/29A GB 3235529 A GB3235529 A GB 3235529A GB 334432 A GB334432 A GB 334432A
Authority
GB
United Kingdom
Prior art keywords
pump
air
external water
pressure
remover
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
GB32355/29A
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.)
ELAC Electroacustic GmbH
Original Assignee
ELAC Electroacustic 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 ELAC Electroacustic GmbH filed Critical ELAC Electroacustic GmbH
Publication of GB334432A publication Critical patent/GB334432A/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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/35—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams
    • G10K11/352—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams by moving the transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

334,432. Electroacustic Ges. Dec. 3, 1928, [Convention date]. Subaqueous sound-signalling apparatus.-Subaqueous sound transmitting and receiving devices are protruded from the hull of a ship by means of a liquid operating medium, the entire circulation system of the operating medium being subjected to the pressure of the external water. A sword-shaped body e carrying the transmitting and receiving devices g is connected to a piston f sliding in a cylinder a having a cover c and a stuffing-box d. A centrifugal pump i causes the in-and-out movement of the body e. A cock l is connected on one hand to the pressure side and on the other hand to the suction side of the pump i, and is so arranged that the pressure and suction sides of the pump are connected alternately with the upper and lower chambers n, m of the cylinder a. The suction side of the pump is connected to the external water through a pipe o. At the highest point on the pressure side of the pump is an air-remover p communicating with the external water through a pipe q. An automatic valve cuts out the air-remover when all the air has escaped after the pump is started. The tubes o, q are provided with cocks r, s which are normally open.
GB32355/29A 1928-12-03 1929-10-24 Expired GB334432A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE334432T 1928-12-03

Publications (1)

Publication Number Publication Date
GB334432A true GB334432A (en) 1930-09-04

Family

ID=31894916

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32355/29A Expired GB334432A (en) 1928-12-03 1929-10-24

Country Status (1)

Country Link
GB (1) GB334432A (en)

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