US3925627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer mounting to sounding board
Assignee: Individual
•
Filing: 1974-06-13
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Granted: 1975-12-09
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Expires: 1994-06-13
Abstract
Abstract A transducer secured to a sounding board with a vacuum cup where a positive transfer of vibratory energy is accomplished between the transducer and the sounding board.
Inventors
- 👤 William J Ashworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:31
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/02; H04R1/025; H04R9/00; H04R9/06; H04R9/066
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
An inertia type electro-mechanical audio transducer in combination with a vacuum cup and a sounding board wherein said vacuum cup is secured to said sounding board by a vacuum seal formed therebetween, said inertia type electro-mechanical audio transducer comprises a vibratory transfer means which extends through said vacuum cup to make solid contact with said sounding board for the transfer of vibratory energy from said transducer to said sounding board for acoustic reproduction, wherein said vacuum cup is the sole support of said transducer by means of said vibratory transfer means.
Claim 2
Dependent Claim
91 words
An inertia type electro-mechanical audio transducer in combination with a vacuum cup and a sounding board wherein said vacuum cup is secured to said sounding board by a vacuum seal formed therebetween, said inertia type electro-mechanical audio transducer comprises a vibratory transfer means which extends through said vacuum cup to make solid contact with said sounding board for the transfer of vibratory energy from said transducer to said sounding board for acoustic reproduction, wherein said vacuum cup is the sole support of said transducer by means of said vibratory transfer means.
Claim 3
Dependent Claim
24 words
A transducer secured to a sounding board by a vacuum cup according to claim 1 wherein said vibratory transfer means is a threaded element.
Claim 4
Dependent Claim
31 words
A transducer secured to a sounding board by a vacuum cup according to claim 1 wherein said vacuum cup has a threaded nut moulded therein for receiving said vibratory transfer means.
Claim 5
Dependent Claim
55 words
A transducer secured to a sounding board by a vacuum cup according to claim 1 wherein said vacuum cup has a hole in it smaller than said vibratory transfer means for receiving said vibratory transfer means wherein said vacuum cup seals around said vibratory transfer means when said vibratory transfer means passes thru said hole.
References Cited (Backward Citations)
US2341275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |