US3345478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow responsive switch
Assignee: Individual
•
Filing: 1965-11-23
•
Granted: 1967-10-03
•
Expires: 1985-11-23
Abstract
No abstract record available.
Inventors
- 👤 Harold D Hutchinson
- 👤 William C Gregge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:57
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A FLOW RESPONSIVE SWITCH MEANS FOR INSERTION IN A FLUID FLOW LINE COMPRISING, IN COMBINATION: A FLUID ENCLOSURE HAVING AN INLET AND OUTLET FOR CONNECTION INTO SAID FLOW LINE; ORIFICE MEANS IN SAID ENCLOSURE DIVIDING SAID ENCLOSURE INTO FIRST AND SECOND CHAMBERS AND DEFINING AN ORIFICE THROUGH WHICH SAID FLUID PASSES; MEANS IN SAID ENCLOSURE RESPONSIVE TO A CHANGE IN THE DIFFERENTIAL PRESSURE BETWEEN SAID FIRST AND SECOND CHAMBERS AS A CONSEQUENCE OF A CHANGE IN THE FLOW RATE OF FLUID THROUGH SAID ORIFICE TO A GIVEN FLOW RATE FOR EFFECTING A PHYSICAL MOVEMENT IN SAID ENCLOSURE; A SWITCH POSITIONED EXTERIOR OF SAID ENCLOSURE; AND MOTION TRANSMITTING MEANS INCLUDING FIRST AND SECOND ARMS, SAID FIRST ARM BEING WITHIN SAID ENCLOSURE AND RESPONSIVE TO SAID PHYSICAL MOVEMENT AND SAID SECOND ARM BEING EXTERIOR TO SAID ENCLOSURE FOR OPERATING SAID SWITCH, SAID ARMS BEING CONNECTED TOGETHER THROUGH A PORTION OF A WALL DEFINING SAID ENCLOSURE FOR TRANSMITTING THROUGH A ROCKING ACTION SAID PHYSICAL MOVEMENT TO SAID SWITCH TO THEREBY ACTUATE SAID SWITCH, SAID ROCKING ACTION TAKING PLACE ABOUT A PIVOT POINT IN SAID PORTION OF SAID WALL.
Claim 2
Dependent Claim
185 words
A FLOW RESPONSIVE SWITCH MEANS FOR INSERTION IN A FLUID FLOW LINE COMPRISING, IN COMBINATION: A FLUID ENCLOSURE HAVING AN INLET AND OUTLET FOR CONNECTION INTO SAID FLOW LINE; ORIFICE MEANS IN SAID ENCLOSURE DIVIDING SAID ENCLOSURE INTO FIRST AND SECOND CHAMBERS AND DEFINING AN ORIFICE THROUGH WHICH SAID FLUID PASSES; MEANS IN SAID ENCLOSURE RESPONSIVE TO A CHANGE IN THE DIFFERENTIAL PRESSURE BETWEEN SAID FIRST AND SECOND CHAMBERS AS A CONSEQUENCE OF A CHANGE IN THE FLOW RATE OF FLUID THROUGH SAID ORIFICE TO A GIVEN FLOW RATE FOR EFFECTING A PHYSICAL MOVEMENT IN SAID ENCLOSURE; A SWITCH POSITIONED EXTERIOR OF SAID ENCLOSURE; AND MOTION TRANSMITTING MEANS INCLUDING FIRST AND SECOND ARMS, SAID FIRST ARM BEING WITHIN SAID ENCLOSURE AND RESPONSIVE TO SAID PHYSICAL MOVEMENT AND SAID SECOND ARM BEING EXTERIOR TO SAID ENCLOSURE FOR OPERATING SAID SWITCH, SAID ARMS BEING CONNECTED TOGETHER THROUGH A PORTION OF A WALL DEFINING SAID ENCLOSURE FOR TRANSMITTING THROUGH A ROCKING ACTION SAID PHYSICAL MOVEMENT TO SAID SWITCH TO THEREBY ACTUATE SAID SWITCH, SAID ROCKING ACTION TAKING PLACE ABOUT A PIVOT POINT IN SAID PORTION OF SAID WALL.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |