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Patent US3582835A successfully refreshed from Google Patents.
US3582835A
Expired / Lapsed
US
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Filter switching circuit
Assignee: Oak Electro Netics Corp
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Filing: 1969-07-28
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Granted: 1971-06-01
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Expires: 1989-07-28
Abstract
Abstract A filter switching circuit including a plurality of inductive and capacitive circuit elements. In one position of a twoposition switch all of the circuit elements are connected to form a band-pass filter between an input and an output. In the other position of the switch the same circuit elements are connected to form a band-stop or band rejection filter.
Inventors
- 👤 Eugene C Walding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:49
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/17; H03H7/1741; H03H7/175; H03H7/0115; H03H7/1758; H03H7/1766; H03H7/1775
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
In a filter circuit, an input and an output, a plurality of inductive and capacitive circuit elements connected between said input and output, two-position switch means interconnected with said inductive and capacitive circuit elements, one position of said switch means interconnecting all of said circuit elements to form a band-pass filter between said input and said output, the other position of said switch means interconnecting all of said circuit elements to form a band stop filter between said input and said output.
Claim 2
Dependent Claim
82 words
In a filter circuit, an input and an output, a plurality of inductive and capacitive circuit elements connected between said input and output, two-position switch means interconnected with said inductive and capacitive circuit elements, one position of said switch means interconnecting all of said circuit elements to form a band-pass filter between said input and said output, the other position of said switch means interconnecting all of said circuit elements to form a band stop filter between said input and said output.
Claim 3
Dependent Claim
21 words
The circuit of claim 1 further characterized in that said band-pass frequency range is substantially identical with said band-stop frequency range.
Claim 4
Dependent Claim
46 words
The circuit of claim 1 further characterized in that in said one position of said switch means, said band-pass fIlter includes the parallel combination of an inductance and a capacitance at the input and the parallel combination of an inductance and a capacitance at the output.
Claim 5
Dependent Claim
22 words
The circuit of claim 3 further characterized by the series combination of an inductance and a capacitance connected between said parallel combinations.
Claim 6
Dependent Claim
46 words
The circuit of claim 1 further characterized in that in said other position of said switch means said band-stop filter includes the series combination of an inductance and a capacitance at the input and the series combination of an inductance and a capacitance at the output.
Claim 7
Dependent Claim
24 words
The circuit of claim 5 further characterized by and including the parallel combination of an inductance and a capacitance connected between said series combinations.
Claim 8
Dependent Claim
121 words
In a filter circuit, an input and an output, a plurality of inductive and capacitive circuit elements connected between said input and output into an input section, an output section and an intermediate section, said intermediate section including an inductance and a capacitance, two-position switch means interconnected with said inductive and capacitive circuit elements, one position of said switch means interconnecting all of said circuit elements to form a first filter between said input and output, with said intermediate section inductance and capacitance being series connected, the other position of said switch means connecting all of said circuit elements to form a second, different filter between said input and output, with said intermediate section inductance and capacitance being connected in parallel.
Claim 9
Dependent Claim
121 words
In a filter circuit, an input and an output, a plurality of inductive and capacitive circuit elements connected between said input and output into an input section, an output section and an intermediate section, said intermediate section including an inductance and a capacitance, two-position switch means interconnected with said inductive and capacitive circuit elements, one position of said switch means interconnecting all of said circuit elements to form a first filter between said input and output, with said intermediate section inductance and capacitance being series connected, the other position of said switch means connecting all of said circuit elements to form a second, different filter between said input and output, with said intermediate section inductance and capacitance being connected in parallel.
References Cited (Backward Citations)
US1735742A
Cited
US2525566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |