US3340604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of securing stacked parts of a loudspeaker
Assignee: US Philips Corp
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Filing: 1964-09-01
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Granted: 1967-09-12
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Expires: 1984-09-01
Abstract
No abstract record available.
Inventors
- 👤 Parain Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:40
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/24; E01C11/26; E01C11/265; F; F24; F24D; F24D13/00; F24D13/02; H; H04; H04R; H04R9/00; H04R9/06; Y; Y02; Y02B; Y02B30/00; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD OF ASSEMBLING THE MAGNETIC POT, POLE PLATE AND SUPPORTING FRAME OF A LOUDSPEAKER COMPRISING THE STEPS OF FORMING A TRUNCATED CONICAL PORTION DEFINING AN APICAL ANGLE B AT ONE END OF SAID LOUDSPEAKER FRAME MEMBER, FORMING A GENERALLY U SHAPE MAGNETIC POT PART HAVING A FRUSTO-CONICAL SIDE WALL PORTION DEFINING AN APICAL ANGLE A WHICH IS LESS THAN SAID APICAL ANGLE B, INSERTING SAID POT PART CONCENTRICALLY WITHIN SAID TRUNCATED CONICAL PORTION OF SAID FRAME IN AN UPRIGHT POSITION SO THAT SAID FRUSTO-CONICAL SIDE WALL PORTION ENGAGES SAID TRUNCATED PORTION, PLACING SAID POLE PLATE WITHIN SAID TRUNCATED CONICAL PORTION OVERLYING THE UPRIGHT WALLS OF SAID POT
Claim 2
Independent Claim
108 words
A METHOD OF ASSEMBLING THE MAGNETIC POT, POLE PLATE AND SUPPORTING FRAME OF A LOUDSPEAKER COMPRISING THE STEPS OF FORMING A TRUNCATED CONICAL PORTION DEFINING AN APICAL ANGLE B AT ONE END OF SAID LOUDSPEAKER FRAME MEMBER, FORMING A GENERALLY U SHAPE MAGNETIC POT PART HAVING A FRUSTO-CONICAL SIDE WALL PORTION DEFINING AN APICAL ANGLE A WHICH IS LESS THAN SAID APICAL ANGLE B, INSERTING SAID POT PART CONCENTRICALLY WITHIN SAID TRUNCATED CONICAL PORTION OF SAID FRAME IN AN UPRIGHT POSITION SO THAT SAID FRUSTO-CONICAL SIDE WALL PORTION ENGAGES SAID TRUNCATED PORTION, PLACING SAID POLE PLATE WITHIN SAID TRUNCATED CONICAL PORTION OVERLYING THE UPRIGHT WALLS OF SAID POT
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |