US3283135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog multiplier using radiation responsive impedance means in its feedback arrangement
Assignee: Robertshaw Controls Co
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Filing: 1962-06-15
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Granted: 1966-11-01
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Expires: 1982-06-15
Abstract
No abstract record available.
Inventors
- 👤 Sklaroff Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:38
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
AN ANALOG MULTIPLIER FOR DERIVING THE PRODUCT OF A FIRST INPUT VARIABLE AND A SECOND INPUT VARIABLE, COMPRISING A VOLTAGE DIVIDER HAVING AN INPUT TERMINAL, AN OUTPUT TERMINAL, A REFERENCE TERMINAL, FIRST IMPEDANCE MEANS BETWEEN SAID INPUT AND OUTPUT TERMINALS AND SECOND IMPEDANCE MEANS BETWEEN SAID OUTPUT AND REFERENCE TERMINALS, SAID IMPEDANCE MEANS EACH INCLUDING RADIANT ENERGY RESPONSIVE VARIABLE IMPEDANCE MEANS, RADIANT ENERGY FOR EMITTING RADIATIONS LOCATED ADJACENT SAID VARIABLE IMPEDANCE MEANS, AND MEANS FOR ENERGIZING SAID RADIANT ENERGY MEANS AS A FUNCTION OF SAID SECOND INPUT VARIABLE TO THEREBY VARY SAID VARIABLE IMPEDANCE MEANS AS A FUNCTION THEREOF, WHEREBY APPLICATION OF SAID FIRST INPUT VARIABLE TO SAID INPUT TERMINAL RESULTS IN AN OUTPUT AT SAID OUTPUT TERMINAL WHICH IS DIRECTLY PROPORTIONAL TO THE PRODUCT OF SAID FIRST AND SECOND INPUT VARI-
Claim 2
Dependent Claim
132 words
AN ANALOG MULTIPLIER FOR DERIVING THE PRODUCT OF A FIRST INPUT VARIABLE AND A SECOND INPUT VARIABLE, COMPRISING A VOLTAGE DIVIDER HAVING AN INPUT TERMINAL, AN OUTPUT TERMINAL, A REFERENCE TERMINAL, FIRST IMPEDANCE MEANS BETWEEN SAID INPUT AND OUTPUT TERMINALS AND SECOND IMPEDANCE MEANS BETWEEN SAID OUTPUT AND REFERENCE TERMINALS, SAID IMPEDANCE MEANS EACH INCLUDING RADIANT ENERGY RESPONSIVE VARIABLE IMPEDANCE MEANS, RADIANT ENERGY FOR EMITTING RADIATIONS LOCATED ADJACENT SAID VARIABLE IMPEDANCE MEANS, AND MEANS FOR ENERGIZING SAID RADIANT ENERGY MEANS AS A FUNCTION OF SAID SECOND INPUT VARIABLE TO THEREBY VARY SAID VARIABLE IMPEDANCE MEANS AS A FUNCTION THEREOF, WHEREBY APPLICATION OF SAID FIRST INPUT VARIABLE TO SAID INPUT TERMINAL RESULTS IN AN OUTPUT AT SAID OUTPUT TERMINAL WHICH IS DIRECTLY PROPORTIONAL TO THE PRODUCT OF SAID FIRST AND SECOND INPUT VARI-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |