US3984790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical reed filter
Assignee: Panasonic Holdings Corp
•
Filing: 1974-07-11
•
Granted: 1976-10-05
•
Expires: 1994-07-11
Abstract
Abstract An electromechanical reed filter has a pair of mechanically resonant reed elements each having an electromechanical transducer. The transducer coupled to a terminal by means a connecting lead is applied with a shock-absorbing member such as resilient adhesive in a position anywhere between the contact point thereof with the transducer and the terminal so that variations in the natural frequency and Q value of the reed elements caused by deformation of the connecting leads due to abnormal shock or other ambient conditions are effectively eliminated.
Inventors
- 👤 Toshiharu Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:50
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/48; H03H9/02; H03H9/05; H03H9/09; H03H9/50
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
118 words
In an electromechanical reed filter of the type comprising, a base member, a pair of elongated, mechanically resonant reed elements, one end region of each of said reed elements being connected together and to said base member, electromechanical transducers each being secured to the side surface of a respective one of said reed elements, a pair of terminals on said base member, and connecting leads connected at the opposite ends thereof to said terminals and to said electromechanical transducers, the improvement which comprises: means comprising a resilient material adhered to the connections of said connecting leads with said transducers for damping resonant vibrations of said connecting leads, thereby to prevent spurious resonances of said mechanically resonant reed elements.
Claim 2
Dependent Claim
118 words
In an electromechanical reed filter of the type comprising, a base member, a pair of elongated, mechanically resonant reed elements, one end region of each of said reed elements being connected together and to said base member, electromechanical transducers each being secured to the side surface of a respective one of said reed elements, a pair of terminals on said base member, and connecting leads connected at the opposite ends thereof to said terminals and to said electromechanical transducers, the improvement which comprises: means comprising a resilient material adhered to the connections of said connecting leads with said transducers for damping resonant vibrations of said connecting leads, thereby to prevent spurious resonances of said mechanically resonant reed elements.
Claim 3
Dependent Claim
21 words
In an electromechanical reed filter as claimed in claim 1, wherein said means for damping resonant vibrations comprises a resilient adhesive.
Claim 4
Dependent Claim
53 words
In an electromechanical reed filter as claimed in claim 2, further comprising an auxiliary support secured on said base member, and wherein at least one of said connecting leads is coupled to said support, and wherein said resilient adhesive is applied to the contact point of said auxiliary support and said connecting lead.
Claim 5
Dependent Claim
42 words
In an electromechanical reed filter as claimed in claim 1, wherein said means for damping resonant vibrations comprises means for absorbing mechanical shocks applied to said connecting leads, thereby to prevent reduction of the Q exhibited by said mechanically resonant reed elements.
Claim 6
Dependent Claim
149 words
In an electromechanical reed filter of the type comprising, a base member, a pair of elongated, mechanically resonant reed elements, one end region of each of said reed elements being connected together and to said base member, electromechanical transducers each being secured to the side surface of a respective one of said reed elements, a pair of terminals on said base member, and connecting leads connected at the opposite ends thereof to said terminals and to said electromechanical transducers, the improvement which comprises: said connecting leads each having an end portion comprised of a first part wound tightly about a respective one of said terminals and being integral therewith, and a remaining part which is wound spaced from the respective one of said terminals and coiled to impart resilience thereto, thereby to damp resonant vibrations of said connecting leads and prevent spurious resonances of said mechanically resonant reed elements.
Claim 7
Dependent Claim
149 words
In an electromechanical reed filter of the type comprising, a base member, a pair of elongated, mechanically resonant reed elements, one end region of each of said reed elements being connected together and to said base member, electromechanical transducers each being secured to the side surface of a respective one of said reed elements, a pair of terminals on said base member, and connecting leads connected at the opposite ends thereof to said terminals and to said electromechanical transducers, the improvement which comprises: said connecting leads each having an end portion comprised of a first part wound tightly about a respective one of said terminals and being integral therewith, and a remaining part which is wound spaced from the respective one of said terminals and coiled to impart resilience thereto, thereby to damp resonant vibrations of said connecting leads and prevent spurious resonances of said mechanically resonant reed elements.
Claim 8
Dependent Claim
126 words
In an electromechanical reed filter of the type comprising, a base member, a pair of elongated, mechanically resonant reed elements, one end region of each of said reed elements being connected together and to said base member, electromechanical transducers each being secured to the side surface of a respective one of said reed elements, a pair of terminals on said base member, and connecting leads connected at the opposite ends thereof to said terminals and to said electromechanical transducers, the improvement which comprises: means comprising a resilient material adhered to a portion of each of said connecting leads and a respective portion of each of said terminals for damping resonant vibrations of said connecting leads, thereby to prevent spurious resonances of said mechanically resonant reed elements.
Claim 9
Dependent Claim
126 words
In an electromechanical reed filter of the type comprising, a base member, a pair of elongated, mechanically resonant reed elements, one end region of each of said reed elements being connected together and to said base member, electromechanical transducers each being secured to the side surface of a respective one of said reed elements, a pair of terminals on said base member, and connecting leads connected at the opposite ends thereof to said terminals and to said electromechanical transducers, the improvement which comprises: means comprising a resilient material adhered to a portion of each of said connecting leads and a respective portion of each of said terminals for damping resonant vibrations of said connecting leads, thereby to prevent spurious resonances of said mechanically resonant reed elements.
Claim 10
Dependent Claim
21 words
In an electromechanical reed filter as claimed in claim 6, wherein said means for damping resonant vibrations comprises a resilient adhesive.
Claim 11
Dependent Claim
36 words
In an electromechanical reed filter as claimed in claim 7, wherein said resilient adhesive is applied to an intermediate portion of each of said connecting leads and to a respective end of each of said terminals.
Claim 12
Dependent Claim
25 words
An electromechanical reed filter as claimed in claim 7, wherein said resilient adhesive is applied to the connection of said connecting leads with said terminals.
Claim 13
Dependent Claim
123 words
In an electromechanical reed filter of the type comprising, a base member, a pair of elongated, mechanically resonant reed elements, one end region of each of said reed elements being connected together and to said base member, electromechanical transducers each being secured to the said surface of a respectiive one of said reed elements, a pair of terminals on said base member, and connecting leads connected at the opposite ends thereof to said terminals and to said electromechanical transducers, the improvement which comprises: means comprising a resilient material adhered to an intermediate portion of each of said connecting leads and to said base member for damping resonant vibrations of said connecting leads, thereby to prevent spurious resonances of said mechanically resonant reed elements.
Claim 14
Dependent Claim
123 words
In an electromechanical reed filter of the type comprising, a base member, a pair of elongated, mechanically resonant reed elements, one end region of each of said reed elements being connected together and to said base member, electromechanical transducers each being secured to the said surface of a respectiive one of said reed elements, a pair of terminals on said base member, and connecting leads connected at the opposite ends thereof to said terminals and to said electromechanical transducers, the improvement which comprises: means comprising a resilient material adhered to an intermediate portion of each of said connecting leads and to said base member for damping resonant vibrations of said connecting leads, thereby to prevent spurious resonances of said mechanically resonant reed elements.
Claim 15
Dependent Claim
21 words
In an electromechanical reed filter as claimed in claim 10, wherein said means for damping resonant vibrations comprises a resilient adhesive.
References Cited (Backward Citations)
US1645090A
Cited
US2866058A
Cited
US2989578A
Cited
US3354413A
Cited
US3505657A
Cited
US3683213A
Cited
US3743973A
Cited
US3805348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |