US3701865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic transducer having diaphragm pivoted in its surround
Assignee: Industrial Research Products Inc
•
Filing: 1971-06-25
•
Granted: 1972-10-31
•
Expires: 1991-06-25
Abstract
Abstract An electronic appliance particularly adapted for converting acoustical energy to electrical energy. The appliance includes a carrier having an elongated piezoelectric element mounted in cantilever fashion on said carrier and a hinged diaphragm mounted on the carrier and connected to the piezoelectric element. The hinged portion of the diaphragm being spaced away from the fixed end of the piezoelectric element. An audio frequency amplification circuit is connected to the piezoelectric element. Components of the circuit are mounted on the carrier and selected components are encapsulated.
Inventors
- 👤 Elmer Victor Carlson
- 👤 Mead Clifford Killion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
An acoustical transducer comprising, in combination, a housing, a carrier, an elongated rigid strip affixed along its length to said carrier, a flexible surround, a diaphragm piston mounted on the surround, said piston having an edge complementary to the rigid strip and adjacent thereto but spaced from the rigid strip by the surround, a portion of said surround being fastened to the elongated, rigid strip, a converter assembly positioned in the housing, and a drive pin connecting said assembly to the piston portion of the diaphragm.
Claim 2
Dependent Claim
86 words
An acoustical transducer comprising, in combination, a housing, a carrier, an elongated rigid strip affixed along its length to said carrier, a flexible surround, a diaphragm piston mounted on the surround, said piston having an edge complementary to the rigid strip and adjacent thereto but spaced from the rigid strip by the surround, a portion of said surround being fastened to the elongated, rigid strip, a converter assembly positioned in the housing, and a drive pin connecting said assembly to the piston portion of the diaphragm.
Claim 3
Dependent Claim
84 words
An acoustical transducer comprising, in combination, a housing, an elongated rigid strip in the housing, a flexible surround, a diaphragm piston mounted on the surround, said piston having an edge adjacent to said rigid strip but spaced from said rigid strip, a portion of said surround being affixed to said strip, a converter assembly positioned in the housing and a drive pin connecting said assembly to the piston portion of the diaphragm, whereby said strip defines a linear hinge about which said diaphragm pivots.
Claim 4
Dependent Claim
84 words
An acoustical transducer comprising, in combination, a housing, an elongated rigid strip in the housing, a flexible surround, a diaphragm piston mounted on the surround, said piston having an edge adjacent to said rigid strip but spaced from said rigid strip, a portion of said surround being affixed to said strip, a converter assembly positioned in the housing and a drive pin connecting said assembly to the piston portion of the diaphragm, whereby said strip defines a linear hinge about which said diaphragm pivots.
References Cited (Backward Citations)
US2367726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |