US1792497A - Vibration-damping device - Google Patents

Vibration-damping device Download PDF

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Publication number
US1792497A
US1792497A US191527A US19152727A US1792497A US 1792497 A US1792497 A US 1792497A US 191527 A US191527 A US 191527A US 19152727 A US19152727 A US 19152727A US 1792497 A US1792497 A US 1792497A
Authority
US
United States
Prior art keywords
container
frequencies
diaphragm
viscous
flat
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 - Lifetime
Application number
US191527A
Other languages
English (en)
Inventor
Arthur C Keller
Edward L Norton
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.)
AT&T Corp
Original Assignee
Bell Telephone Laboratories 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
Priority to NL30962D priority Critical patent/NL30962C/xx
Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US191527A priority patent/US1792497A/en
Priority to DEE36715D priority patent/DE559010C/de
Priority to GB316/28A priority patent/GB290558A/en
Priority to FR651221D priority patent/FR651221A/fr
Application granted granted Critical
Publication of US1792497A publication Critical patent/US1792497A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/16—Mounting or connecting stylus to transducer with or without damping means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Definitions

  • y 1 Referring particularly to Figs. 1 t o 4; there isshown an electromagnetic phonograph" recorder or reproducer having an electromag-Q Patented Feb. 17, 1931 menu 'c'. KELLERAim EDWARD. 1;. woman; or Yo'xm, N.” in, nssreivons 'ro narrow or may; rom:
  • the object of. the invention is to provide a unitary damping means having a substantially straight line-response characteristic over a wide band of frequencies regardless of normal temperature changes.
  • the viscous material is one which iscomchanges and the other materials o fthe .unit
  • the damping device comprises a cylindrt In accordance with the features ofthis v I to 'the magnet 10'.
  • the damping device In the center of the chaincal chambe'r 22 rig'idly mounted with respect her there is mounted'a"post"member 23,"the face of which is in-close space relation to the flexible metallic", diaphragm 24.
  • F'gfa shows a modification of the damping unitinfwhiclra metallic plate 30 is mountedon the i'n'ne'rf surface of the diaphragm so,
  • a vibration damping means comprising a container, viscous matter in said container, and a vpair of spaced relatively movable members in said container adapted in their movement to move the viscous matter laterally between their faces, the container and one of the members being made of materials having such different jcoeilicients of expansion as to compensate for changes in viscosity of the matter in the container.
  • a vibration damping means comprising a container for viscous matter viscous matter in the container, and a pair of relatively movable flat-faced members of least comparable to approximately equal areas mounted in spaced relation in said container, the viscous matter filling the chamber to an extent to cover the opposed faces but with sufficient clearance to provide free lateral movement of the viscous matter between the opposing faces.
  • a vibration damping means comprisin a container, a vibrating diaphragm orming a closure for said container, a fiat-faced member carried by the diaphragm, a stationary member in said container having a flat face comparable in area to the area of the first mentioned flat-faced member and located in opposed spaced relation thereto, and viscous matter in the casing adapted for free lateral movement across the adjacent fiat faces in response to movement of the vibrating member to control the character of the vibrating movement.
  • a vibration dampin means comprising a container, a flat-faced vibrating member in one end of the container, a stationary member in the container having a flat face comparable in area to the area of the vibrating member and located in opposed spaced relation to the vibrating member, and viscous matter in the container filling said container to an extent to cover the opposed faces but with sufiicient clearance to permit free lateral movement of the viscous matter between said faces,

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Combined Devices Of Dampers And Springs (AREA)
US191527A 1927-05-14 1927-05-14 Vibration-damping device Expired - Lifetime US1792497A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL30962D NL30962C (enrdf_load_stackoverflow) 1927-05-14
US191527A US1792497A (en) 1927-05-14 1927-05-14 Vibration-damping device
DEE36715D DE559010C (de) 1927-05-14 1927-12-31 Fluessigkeitsdaempfungseinrichtung
GB316/28A GB290558A (enrdf_load_stackoverflow) 1927-05-14 1928-01-05
FR651221D FR651221A (fr) 1927-05-14 1928-01-06 Perfectionnements aux dispositifs destinés à amortir des vibrations mécaniques, particulièrement applicables à des dispositifs électromagnétiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US191527A US1792497A (en) 1927-05-14 1927-05-14 Vibration-damping device

Publications (1)

Publication Number Publication Date
US1792497A true US1792497A (en) 1931-02-17

Family

ID=22705849

Family Applications (1)

Application Number Title Priority Date Filing Date
US191527A Expired - Lifetime US1792497A (en) 1927-05-14 1927-05-14 Vibration-damping device

Country Status (5)

Country Link
US (1) US1792497A (enrdf_load_stackoverflow)
DE (1) DE559010C (enrdf_load_stackoverflow)
FR (1) FR651221A (enrdf_load_stackoverflow)
GB (1) GB290558A (enrdf_load_stackoverflow)
NL (1) NL30962C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676806A (en) * 1948-05-29 1954-04-27 Columbia Broadcasting Syst Inc Phonograph reproducer arm assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676806A (en) * 1948-05-29 1954-04-27 Columbia Broadcasting Syst Inc Phonograph reproducer arm assembly

Also Published As

Publication number Publication date
DE559010C (de) 1932-09-15
FR651221A (fr) 1929-02-19
GB290558A (enrdf_load_stackoverflow) 1929-04-05
NL30962C (enrdf_load_stackoverflow)

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