GB1204645A - Rigid tubing - Google Patents
Rigid tubingInfo
- Publication number
- GB1204645A GB1204645A GB23787/69A GB2378769A GB1204645A GB 1204645 A GB1204645 A GB 1204645A GB 23787/69 A GB23787/69 A GB 23787/69A GB 2378769 A GB2378769 A GB 2378769A GB 1204645 A GB1204645 A GB 1204645A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- outer layer
- polyimide
- adhesive
- inner layer
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/269—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension including synthetic resin or polymer layer or component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/298—Physical dimension
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31721—Of polyimide
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
1,204,645. Tubing. NIEMAND BROS. Inc. 9 May, 1969 [20 May, 1968], No. 23787/69. Heading F2P. [Also in Division H4] A rigid tube 1, having stable dimensions, e.g. a voice coil tube (7) which actuates the speaker diaphragm (8) of a speaker assembly, Fig. 4 (not shown), comprises two layers 4, 2 which are bonded together by an adhesive the inner layer 2 being formed from a stiff and flexible material such as aluminium film or polyimide material and the outer layer 4 from a heat stable and moisture resistant material which is heat stable up to a temperature of at least 250 F. The outer layer 4 is made of polyimide, or polyimide paper, each layer being spirally wound, by butt joining successive windings, without adhesive, on to a smooth mandrel, the inner face of the inner layer 2 being preferably coated with an inter lubricant and the undersurface of the outer layer being coated with a polyester adhesive. The inner layer 2 is preferably wound at an angle of 45 degrees under a tension of 4 to 10 lb., the second layer 4 being similarly wound with its butt joints between those of the inner layer. The outer layer 4 may be surrounded by a third layer of thermosetting resinous material to receive a voice coil.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US73023568A | 1968-05-20 | 1968-05-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1204645A true GB1204645A (en) | 1970-09-09 |
Family
ID=24934514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23787/69A Expired GB1204645A (en) | 1968-05-20 | 1969-05-09 | Rigid tubing |
Country Status (4)
Country | Link |
---|---|
US (1) | US3545495A (en) |
DE (1) | DE1925687A1 (en) |
FR (1) | FR2008895A1 (en) |
GB (1) | GB1204645A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3247941A1 (en) * | 1982-12-24 | 1984-06-28 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | SPEAKER |
US4602722A (en) * | 1985-03-25 | 1986-07-29 | Ives Frank E | Leak-resistant fiberglass tank and method of making the same |
US4660738A (en) * | 1985-03-25 | 1987-04-28 | Ives Frank E | Leak-resistant fiberglass tank and method of making the same |
-
1968
- 1968-05-20 US US730235A patent/US3545495A/en not_active Expired - Lifetime
-
1969
- 1969-05-09 GB GB23787/69A patent/GB1204645A/en not_active Expired
- 1969-05-19 FR FR6916185A patent/FR2008895A1/fr not_active Withdrawn
- 1969-05-20 DE DE19691925687 patent/DE1925687A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2008895A1 (en) | 1970-01-30 |
US3545495A (en) | 1970-12-08 |
DE1925687A1 (en) | 1969-11-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |