Patent US2959353A successfully refreshed from Google Patents.
Patent US3305734A successfully refreshed from Google Patents.
US3305734A
Expired / Lapsed
US
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Condition responsive apparatus including a bridge with output terminals connected to two differential amplifiers
Assignee: Honeywell Inc
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Filing: 1963-09-20
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Granted: 1967-02-21
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Expires: 1983-09-20
Abstract
No abstract record available.
Inventors
- 👤 Edward W Buttenhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:42
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/1906; G05D23/1927; G05D23/1928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
CONDITION RESPONSIVE APPARATUS COMPRISING; A BRIDGE CIRCUIT HAVING A CONDITION SENSING ELEMENT AND AN OUTPUT WHICH IS VARIABLE WITH THE CONDITION OF BRIDGE BALANCE AS CONTROLLED BY SAID CONDITION SENSING ELEMENT, A DIFFERENTIAL AMPLIFIER CONNECTED TO BE CONTROLLED BY SAID BRIDGE OUTPUT AND TO HAVE A PAIR OF INVERSELY RELATED AMPLIFIER OUTPUTS DEPENDENT UPON THE CONDITION OF BRIDGE UNBALANCE, FIRST MEANS CONTROLLED BY ONE OF SAID AMPLIFIER OUTPUTS TO PROVIDE AN OUTPUT PROPORTIONAL TO BRIDGE UNBALANCE WITHIN A FIRST RANGE OF BRIDGE UNBALANCE, AND SECOND MEANS CONTROLLED BY THE OTHER OF SAID AMPLIFIER OUTPUTS AND CONNECTED TO CONTROL SAID FIRST MEANS TO MODIFY THE OUTPUT THEREOF WHEN THE BRIDGE UNBALANCE IS WITHIN A SECOND RANGE OF BRIDGE UNBALANCE.
Claim 2
Dependent Claim
118 words
CONDITION RESPONSIVE APPARATUS COMPRISING; A BRIDGE CIRCUIT HAVING A CONDITION SENSING ELEMENT AND AN OUTPUT WHICH IS VARIABLE WITH THE CONDITION OF BRIDGE BALANCE AS CONTROLLED BY SAID CONDITION SENSING ELEMENT, A DIFFERENTIAL AMPLIFIER CONNECTED TO BE CONTROLLED BY SAID BRIDGE OUTPUT AND TO HAVE A PAIR OF INVERSELY RELATED AMPLIFIER OUTPUTS DEPENDENT UPON THE CONDITION OF BRIDGE UNBALANCE, FIRST MEANS CONTROLLED BY ONE OF SAID AMPLIFIER OUTPUTS TO PROVIDE AN OUTPUT PROPORTIONAL TO BRIDGE UNBALANCE WITHIN A FIRST RANGE OF BRIDGE UNBALANCE, AND SECOND MEANS CONTROLLED BY THE OTHER OF SAID AMPLIFIER OUTPUTS AND CONNECTED TO CONTROL SAID FIRST MEANS TO MODIFY THE OUTPUT THEREOF WHEN THE BRIDGE UNBALANCE IS WITHIN A SECOND RANGE OF BRIDGE UNBALANCE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |