US3344247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid responsive flow switch
Assignee: —
•
Filing: —
•
Granted: 1967-09-26
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Expires: 1984-09-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:24
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A FLOW SWITCH FOR ASSOCIATION WITH A FLUID CONDUCTING DUCT COMPRISING A HOUSING ADAPTED TO BE MOUNTED ON SAID DUCT, ELECTRICAL SWITCH MEANS MOUNTED IN SAID HOUSING, PADDLE ROD MEANS PIVOTALLY MOUNTED AT ONE END THEROF WITHIN SAID HOUSING AND WITH THE OTHER END OF SAID PADDLE ROD MEANS EXTENDING INTO SAID DUCT, PADDLE MEANS CARRIED AT SAID OTHER END OF SAID PADDLE ROD MEANS, SAID PADDLE MEANS BEING MOVABLE BY FLUID FLOW IN SAID DUCT TO EFFECT MOVEMENT OF SAID PADDLE ROD MEANS, SAID PADDLE MEANS INCLUDING PIVOTABLE PADDLE COMPONENTS MOVABLE AROUND SAID OTHER END OF SAID PADDLE ROD MEANS AND RELATIVE TO EACH OTHER FROM A FIRST POSITION BY PREDETERMINED FLOW OF AIR THROUGH SAID DUCT FOR DECREASING THE EFFECTIVE SURFACE AREA OF SAID PADDLE COMPONENTS OF SAID PADDLE MEANS EXPOSED TO FLUID FLOW IN SAID DUCT, SPRING MERANS IN ENGAGEMENT WITH SAID PIVOTABLE PADDLE COMPONENTS FOR NORMALLY BIASING SAID PADDLE COMPONENTS TOWARDS SAID FIRST POSITION, AND SWITCH ACTUATOR MEANS BETWEEN SAID ONE END OF SAID PADDLE ROD MEANS AND SAID ELECTRICAL SWITCH MEANS FOR OPENING AND CLOSING THE LATTER UPON PREDETERMINED MOVEMENT OF SAID PADDLE ROD MEANS.
Claim 2
Dependent Claim
190 words
A FLOW SWITCH FOR ASSOCIATION WITH A FLUID CONDUCTING DUCT COMPRISING A HOUSING ADAPTED TO BE MOUNTED ON SAID DUCT, ELECTRICAL SWITCH MEANS MOUNTED IN SAID HOUSING, PADDLE ROD MEANS PIVOTALLY MOUNTED AT ONE END THEROF WITHIN SAID HOUSING AND WITH THE OTHER END OF SAID PADDLE ROD MEANS EXTENDING INTO SAID DUCT, PADDLE MEANS CARRIED AT SAID OTHER END OF SAID PADDLE ROD MEANS, SAID PADDLE MEANS BEING MOVABLE BY FLUID FLOW IN SAID DUCT TO EFFECT MOVEMENT OF SAID PADDLE ROD MEANS, SAID PADDLE MEANS INCLUDING PIVOTABLE PADDLE COMPONENTS MOVABLE AROUND SAID OTHER END OF SAID PADDLE ROD MEANS AND RELATIVE TO EACH OTHER FROM A FIRST POSITION BY PREDETERMINED FLOW OF AIR THROUGH SAID DUCT FOR DECREASING THE EFFECTIVE SURFACE AREA OF SAID PADDLE COMPONENTS OF SAID PADDLE MEANS EXPOSED TO FLUID FLOW IN SAID DUCT, SPRING MERANS IN ENGAGEMENT WITH SAID PIVOTABLE PADDLE COMPONENTS FOR NORMALLY BIASING SAID PADDLE COMPONENTS TOWARDS SAID FIRST POSITION, AND SWITCH ACTUATOR MEANS BETWEEN SAID ONE END OF SAID PADDLE ROD MEANS AND SAID ELECTRICAL SWITCH MEANS FOR OPENING AND CLOSING THE LATTER UPON PREDETERMINED MOVEMENT OF SAID PADDLE ROD MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |