US2013792A - Seamless diaphragm - Google Patents
Seamless diaphragm Download PDFInfo
- Publication number
- US2013792A US2013792A US705838A US70583834A US2013792A US 2013792 A US2013792 A US 2013792A US 705838 A US705838 A US 705838A US 70583834 A US70583834 A US 70583834A US 2013792 A US2013792 A US 2013792A
- Authority
- US
- United States
- Prior art keywords
- diaphragm
- seamless
- fibrous material
- germany
- diaphragms
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
Definitions
- This invention relates to diaphragms for acoustic apparatus and the like.
- the object of the invention is to provide a seamless diaphragm made, from fibrous material, preferably cast 5 carton-for acoustic WW.
- Diaphragms of fibrous material are fund mentally known in the prior art. However, while these diaphragms are quite serviceable in practice, they nevertheless suffer from the drawback 10 that they lack sumcient rigidity for high or heavyduty requirements in acoustical work. According to the invention thesedrawbacks are obviated by placing reinforcement ribs or fins or stiffening skeletons of refined and alloyed light metal (alu- 15 minum or beryllium alloys) or other hard and light substances in the mold during the process here disclosed being applied to a cone diaphragm.
- the fins or ribs or reinforcement members being of plain or profiled form, are made of alloyed light metal and are indicated at I. They are embedded into the diaphragm consisting of 5 fibrous material 2.
- What I claim is: i. The method of manufacturing a diaphragm Y which consists in molding a diaphragm of fibrous material around a reinforcingframe of rigid 6 material.
- a diaphragm comprising a rigid reinforcing frame and a fibrous mass molded around said frame and formed into the desired diaphragm m 3.
- seamless diaphragm comprising a reinforcing skeleton of a light metal alloy and a molded fibrous material surrounding said'skeleton sothatsaidskeletonisimbeddedinsaidfibrousmaterial, aaid fibrous material being formed into so
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
Sept. 10, 1935. sc A E 2,013,792
S EAMLE S S DIAPHRAGM Filed Jan. 9, 1934 IN VENT OR Efi/CH SCH/15 65 A TTORNEY byfibrousmaterlal.
Patented Sept. 10, 1935 UNITED STATES PATENT OFFICE SEAHLESS DIAPHRAGM Erich Schlfer, Berlin, Germany, aaaignor to Telefunken Gesellaehaft fur Drahtloae Telegraphic, Berlin. Germany, a corporation of Germany Application January 9, 1934, Serial No. 705,838 In Germany February 8, 1983 3 Claims. (Cl. 181-82) This invention relates to diaphragms for acoustic apparatus and the like. The object of the invention is to provide a seamless diaphragm made, from fibrous material, preferably cast 5 carton-for acoustic WW.
Diaphragms of fibrous material are fund mentally known in the prior art. However, while these diaphragms are quite serviceable in practice, they nevertheless suffer from the drawback 10 that they lack sumcient rigidity for high or heavyduty requirements in acoustical work. According to the invention thesedrawbacks are obviated by placing reinforcement ribs or fins or stiffening skeletons of refined and alloyed light metal (alu- 15 minum or beryllium alloys) or other hard and light substances in the mold during the process here disclosed being applied to a cone diaphragm. The fins or ribs or reinforcement members being of plain or profiled form, are made of alloyed light metal and are indicated at I. They are embedded into the diaphragm consisting of 5 fibrous material 2.
What I claim is: i. The method of manufacturing a diaphragm Y which consists in molding a diaphragm of fibrous material around a reinforcingframe of rigid 6 material.
2. A diaphragm comprising a rigid reinforcing frame and a fibrous mass molded around said frame and formed into the desired diaphragm m 3. seamless diaphragm comprising a reinforcing skeleton of a light metal alloy and a molded fibrous material surrounding said'skeleton sothatsaidskeletonisimbeddedinsaidfibrousmaterial, aaid fibrous material being formed into so
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2013792X | 1933-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2013792A true US2013792A (en) | 1935-09-10 |
Family
ID=7965910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US705838A Expired - Lifetime US2013792A (en) | 1933-02-08 | 1934-01-09 | Seamless diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2013792A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2624417A (en) * | 1947-02-20 | 1953-01-06 | Joseph B Brennan | Acoustic diaphragm with flexible rim portion and rigid body portion |
| US3111187A (en) * | 1959-11-23 | 1963-11-19 | H J Leak & Company Ltd | Diaphragm for electro acoustic transducer |
| US3983337A (en) * | 1973-06-21 | 1976-09-28 | Babbco, Ltd. | Broad-band acoustic speaker |
| GB2587900A (en) * | 2019-08-23 | 2021-04-14 | Tymphany Acoustic Tech Ltd | A diaphragm for use in an audio transducer and a method of manufacturing a diaphragm |
-
1934
- 1934-01-09 US US705838A patent/US2013792A/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2624417A (en) * | 1947-02-20 | 1953-01-06 | Joseph B Brennan | Acoustic diaphragm with flexible rim portion and rigid body portion |
| US3111187A (en) * | 1959-11-23 | 1963-11-19 | H J Leak & Company Ltd | Diaphragm for electro acoustic transducer |
| US3983337A (en) * | 1973-06-21 | 1976-09-28 | Babbco, Ltd. | Broad-band acoustic speaker |
| GB2587900A (en) * | 2019-08-23 | 2021-04-14 | Tymphany Acoustic Tech Ltd | A diaphragm for use in an audio transducer and a method of manufacturing a diaphragm |
| GB2587900B (en) * | 2019-08-23 | 2022-06-22 | Tymphany Acoustic Tech Ltd | A diaphragm for use in an audio transducer and a method of manufacturing a diaphragm |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3111187A (en) | Diaphragm for electro acoustic transducer | |
| US2013792A (en) | Seamless diaphragm | |
| US1872583A (en) | Sound producing diaphragm and method of making same | |
| ES425926A1 (en) | Low expansion alloys | |
| US1832608A (en) | Diaphragm for acoustic devices | |
| CN210629839U (en) | Double-dome structure of micro loudspeaker | |
| US1961149A (en) | Loud speaker diaphragm | |
| CN202918585U (en) | Pad | |
| JPS5753198A (en) | Ring-shaped speaker | |
| US2230548A (en) | Loudspeaker diaphragm | |
| US1689030A (en) | Acoustic diaphragm | |
| US1771052A (en) | Horn | |
| US1778308A (en) | Acoustic device | |
| JPS51115213A (en) | Preparation of aluminum-titanium alloys for use as grain refiners | |
| US1773605A (en) | Loud-speaker | |
| CN108262446A (en) | A kind of production technology of the guiding frame based on cavityless casting | |
| ES333270A1 (en) | A procedure to produce an alloy of nickel-chromocobalt-iron. (Machine-translation by Google Translate, not legally binding) | |
| US3483946A (en) | Loudspeaker | |
| US1845210A (en) | Loud speaker diaphragm | |
| US1548106A (en) | Telephone-receiver diaphragm | |
| US1540229A (en) | Sound reproducer | |
| US1859758A (en) | Loud speaker | |
| US1910790A (en) | Chaplet | |
| US1907449A (en) | Loudspeaker | |
| SU1137590A1 (en) | Material of high-modular metal diaphragm for loudspeaker |