FR778904A - Dispositifs destinés à la traduction des vibrations - Google Patents

Dispositifs destinés à la traduction des vibrations

Info

Publication number: FR778904A
Authority: FR; France
Prior art keywords: vibrations; translation; devices intended; intended; devices
Prior art date: 1933-10-04
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

Other languages

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.)

Electrical Research Products Inc

Original Assignee

Electrical Research Products 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.)

1933-10-04

Filing date

1934-09-26

Publication date

1935-03-26

1934-09-26 Application filed by Electrical Research Products Inc filed Critical Electrical Research Products Inc

1935-03-26 Application granted granted Critical

1935-03-26 Publication of FR778904A publication Critical patent/FR778904A/fr

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus
- 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

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Treatment Of Liquids With Adsorbents In General (AREA)
Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
Fluid-Damping Devices (AREA)
Moving Of Heads (AREA)

FR778904D 1933-10-04 1934-09-26 Dispositifs destinés à la traduction des vibrations Expired FR778904A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US692058A US1985005A (en)	1933-10-04	1933-10-04	Vibration translating device

Publications (1)

Publication Number	Publication Date
FR778904A true FR778904A (fr)	1935-03-26

Family

ID=24779080

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR778904D Expired FR778904A (fr)	1933-10-04	1934-09-26	Dispositifs destinés à la traduction des vibrations

Country Status (4)

Country	Link
US (1)	US1985005A (fr)
DE (1)	DE630476C (fr)
FR (1)	FR778904A (fr)
GB (1)	GB422695A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2508783A (en) *	1945-02-16	1950-05-23	Lionel B Cornwell	Electrical sound translating device
US3118125A (en) *	1959-06-18	1964-01-14	Claude C Sims	Underwater sound transducer with sealed liquid coupling chamber
US8098546B2 (en)	2009-07-08	2012-01-17	Geospace Technologies, Lp	Geophone having improved sensitivity
US8208347B2 (en)	2009-07-08	2012-06-26	Geospace Technologies, Lp	Geophone having improved damping control
US8050144B2 (en)	2009-07-08	2011-11-01	Geospace Technologies Lp	Vertical geophone having improved distortion characteristics

1933
- 1933-10-04 US US692058A patent/US1985005A/en not_active Expired - Lifetime
1934
- 1934-09-26 FR FR778904D patent/FR778904A/fr not_active Expired
- 1934-09-27 DE DEE46048D patent/DE630476C/de not_active Expired
- 1934-10-01 GB GB27983/34A patent/GB422695A/en not_active Expired

Also Published As

Publication number	Publication date
DE630476C (de)	1936-05-28
GB422695A (en)	1935-01-16
US1985005A (en)	1934-12-18

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