JPS5546673A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Coaxial speaker
Assignee: Pioneer Corp
•
Filing: 1978-09-30
•
Granted: —
•
Expires: 1998-09-30
Abstract
Abstract PURPOSE:To obtain desired acoustic characteristics and also to improve production efficiency, by combining together two speaker units in a separatable state. CONSTITUTION:In through-chamber 14 of plane diaphragm type speaker unit 3, speaker unit 19 is fixed being extractable, and both units 3 and 19, bearing no mutual realtion, are given a speaker function independently. As a result, the design of units 3 and 19 is optimized and production efficiency improves. Further, selecting each unit makes it possible to obtain desired acoustic characteristics.
Inventors
- 👤 Itsuo Tsuchiya
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-04 18:14
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
JPS5546650A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.