US3325612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow sensing device
Assignee: Lockheed Martin Corp
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Filing: 1964-06-26
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Granted: 1967-06-13
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Expires: 1984-06-26
Abstract
No abstract record available.
Inventors
- 👤 Rudolph S Petersen
- 👤 Olsen Benny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:04
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/28; H; H01; H01H; H01H35/00; H01H35/24; H01H35/40; H01H35/405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
A FLUID FLOW SENSING DEVICE COMPRISING, A HOUSING, A FLAPPER ROD, MEANS FOR PIVOTING SAID FLAPPER ROD IN SAID HOUSING AND BIASING SAID ROD INTO A NORMAL SWITCH "ON" POSITION, PLANAR SURFACED FLAPPER ROD ACTUATING MEANS ON A FIRST PORTION OF SAID FLAPPER ROD, SWITCH ACTUATING MEANS ON A SECOND PORTION OF SAID FLAPPER ROD, A SOURCE OF FLUID UNDER VARIABLE FLOW, INLET PORT MEANS FOR DIRECTING THE FLUID UNDER PRESSURE IN THE FORM OF A JET, TOWARD SAID PLANAR SURFACE ON SAID FIRST PORTION OF THE FLAPPER ROD, TO IMPINGE ON THE PLANAR SURFACE PERPENDICULARLY THERETO, TO PIVOT SAID FLAPPER ROD OUT OF ITS NORMAL SWITCH "ON" POSITION AND INTO A SWITCH "OFF" POSITION, SWITCH MEANS MOUNTED ON SAID HOUSING IN A POSITION TO COACT WITH THE SWITCH ACTUATING MEANS ON SAID FLAPPER ROD WHEN SAID ROD IS IN ITS NORMAL SWITCH "ON" POSITION AND NOT TO COACT WITH THE SWITCH ACTUATING MEANS ON SAID FLAPPER ROD WHEN SAID ROD IS IN ITS SWITCH "OFF" POSITION, SAID FLAPPER ROD CONSISTING OF A BIMETALLIC ELEMENT WHEREBY SAID FLUID FLOW SENSING DEVICE COMPENSATES FOR CHANGES IN TEMPERATURE AND VISCOSITY OF THE FLUID.
Claim 2
Dependent Claim
191 words
A FLUID FLOW SENSING DEVICE COMPRISING, A HOUSING, A FLAPPER ROD, MEANS FOR PIVOTING SAID FLAPPER ROD IN SAID HOUSING AND BIASING SAID ROD INTO A NORMAL SWITCH "ON" POSITION, PLANAR SURFACED FLAPPER ROD ACTUATING MEANS ON A FIRST PORTION OF SAID FLAPPER ROD, SWITCH ACTUATING MEANS ON A SECOND PORTION OF SAID FLAPPER ROD, A SOURCE OF FLUID UNDER VARIABLE FLOW, INLET PORT MEANS FOR DIRECTING THE FLUID UNDER PRESSURE IN THE FORM OF A JET, TOWARD SAID PLANAR SURFACE ON SAID FIRST PORTION OF THE FLAPPER ROD, TO IMPINGE ON THE PLANAR SURFACE PERPENDICULARLY THERETO, TO PIVOT SAID FLAPPER ROD OUT OF ITS NORMAL SWITCH "ON" POSITION AND INTO A SWITCH "OFF" POSITION, SWITCH MEANS MOUNTED ON SAID HOUSING IN A POSITION TO COACT WITH THE SWITCH ACTUATING MEANS ON SAID FLAPPER ROD WHEN SAID ROD IS IN ITS NORMAL SWITCH "ON" POSITION AND NOT TO COACT WITH THE SWITCH ACTUATING MEANS ON SAID FLAPPER ROD WHEN SAID ROD IS IN ITS SWITCH "OFF" POSITION, SAID FLAPPER ROD CONSISTING OF A BIMETALLIC ELEMENT WHEREBY SAID FLUID FLOW SENSING DEVICE COMPENSATES FOR CHANGES IN TEMPERATURE AND VISCOSITY OF THE FLUID.
References Cited (Backward Citations)
US1205530A
Cited
US3113189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |