Patent US2093536A successfully refreshed from Google Patents.
Patent US4434329A successfully refreshed from Google Patents.
US4434329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microphone device built in a tape recorder
Assignee: Olympus Corp
•
Filing: 1982-02-12
•
Granted: 1984-02-28
•
Expires: 2002-02-12
Abstract
Abstract A microphone device arranged to be built in a superminiature tape recorder is disclosed. The device includes a casing portion of a tape recorder, a face member fixed on the casing portion and having a plurality of sound inlet holes, a first metallic support member supported by the face member for isolating vibrations of relatively low frequency, a second support member supported by the first support member for isolating vibrations of relatively high frequency, and a microphone body supported by the second support member in operative relation to the face member. A pair of bare conductive wires lead out of the microphone body, and each has a diameter of 0.15 mm or less.
Inventors
- 👤 Mitsuo Nasu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:18
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/08; H04R1/20; H04R1/22; H04R1/222
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
97 words
A microphone device arranged to be built in a tape recorder, comprising a casing portion of a tape recorder, a face member fixed on the casing portion and having a plurality of sound inlet holes, a first support member located inside the casing portion and supported by the face member for isolating vibrations of relatively low frequency, a second support member located inside the casing portion and supported by the first support member for isolating vibrations of relatively high frequency, and a microphone body supported by the second support member in operative relation to the face member.
Claim 2
Dependent Claim
97 words
A microphone device arranged to be built in a tape recorder, comprising a casing portion of a tape recorder, a face member fixed on the casing portion and having a plurality of sound inlet holes, a first support member located inside the casing portion and supported by the face member for isolating vibrations of relatively low frequency, a second support member located inside the casing portion and supported by the first support member for isolating vibrations of relatively high frequency, and a microphone body supported by the second support member in operative relation to the face member.
Claim 3
Dependent Claim
30 words
A microphone device as claimed in claim 1, wherein the first support member comprises metal material and is formed in a shape of a tubular body having a bottom wall.
Claim 4
Dependent Claim
27 words
A microphone device as claimed in claim 1, wherein the second support member comprises elastic material having sufficient elasticity to isolate the vibrations of relatively high frequency.
Claim 5
Dependent Claim
43 words
A microphone device as claimed in claim 1, further comprising a frame member extending inside the casing portion and supported by the face member, and an elastic member, wherein the first support member is supported by the frame member through the elastic member.
Claim 6
Dependent Claim
23 words
A microphone device as claimed in claim 1, wherein the first support member is cast with the frame member as a unit body.
Claim 7
Dependent Claim
29 words
A microphone device as claimed in claim 1, further comprising a pair of bare conductive wires led out of the microphone body and having 0.15 mm or less diameter.
Claim 8
Dependent Claim
30 words
A microphone device as claimed in claim 6, including an intermediate terminal plate supported inside the casing portion, and the bare conductive wires are connected to the intermediate terminal plate.
Claim 9
Dependent Claim
26 words
A microphone device as claimed in claim 6, wherein the bare conductive wires are arranged to be connected to electrical circuits provided in the casing portion.
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) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |