GB324155A - Improvements in diaphragms - Google Patents
Improvements in diaphragmsInfo
- Publication number
- GB324155A GB324155A GB3354828A GB3354828A GB324155A GB 324155 A GB324155 A GB 324155A GB 3354828 A GB3354828 A GB 3354828A GB 3354828 A GB3354828 A GB 3354828A GB 324155 A GB324155 A GB 324155A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- points
- frame
- arms
- suspension
- 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
Links
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
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
324,155. Thompson, O. B. Nov. 16, 1928. Diaphragms; magnetic instruments.-The diaphragm and moving-coil unit of a loud-speaker is carried from a supporting frame by a plurality of arms or links whose points of attachment to the diaphragm and points of suspension from the frame lie in the vertical plane of gravity of the unit and are angularly displaced relatively to one another. In the construction shown, the diaphragm D consists of a small central cone 1 carrying the moving coil C and frustums W, 3, the periphery 3<1> of frustum 3 being connected to the frame F by a ring or annular plate d. Slits s are made in the ring d so as to form a number of arms b<1> - - b" whose points of attachment S<1> - - S‹ are angularly removed from the points of suspension a' - - a<6>. The arms are preferably concentric with the diaphragm as shown, but may be tangential to the curve thereof. In a modified construction (Fig. 3, not shown), the points of suspension from the frame F are arranged nearer the centre of the diaphragm than the points of attachment S<1> - - S<6>. According to the Provisional Specification the diaphragm may be provided with strengthening pieces.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3354828A GB324155A (en) | 1928-11-16 | 1928-11-16 | Improvements in diaphragms |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3354828A GB324155A (en) | 1928-11-16 | 1928-11-16 | Improvements in diaphragms |
Publications (1)
Publication Number | Publication Date |
---|---|
GB324155A true GB324155A (en) | 1930-01-23 |
Family
ID=10354365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3354828A Expired GB324155A (en) | 1928-11-16 | 1928-11-16 | Improvements in diaphragms |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB324155A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1094304B (en) * | 1956-01-11 | 1960-12-08 | Peter Grassmann | Electrodynamic loudspeaker with conical membrane |
-
1928
- 1928-11-16 GB GB3354828A patent/GB324155A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1094304B (en) * | 1956-01-11 | 1960-12-08 | Peter Grassmann | Electrodynamic loudspeaker with conical membrane |
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