US2756626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting particles in fluids
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1951-11-15
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Granted: 1956-07-31
•
Expires: 1971-11-15
Abstract
No abstract record available.
Inventors
- 👤 Paul J Lansing
- 👤 William J Krodel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:12
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/06; G01N15/0606; G01N15/0618
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN APPARATUS FOR DETECTING PARTICLES IN FLUIDS, MEANS DEFINING A FLUID FLOW CHAMBER, A FILTER ELEMENT HAVING A SUBSTANTIALLY PLANAR SURFACE PORTION AND ARRANGED IN THE PATH OF FLUID FLOW IN SAID CHAMBER TO COLLECT PARTICLES ON SAID PLANAR SURFACE PORTION, FIRST SECOND RADIANT ENERGY SHIELDS ON OPPOSITE SIDES OF SAID CHAMBER EACH HAVING A SLOT THEREIN, ONE EDGE OF EACH SLOT BEING SUBSTANTIALLY IN THE SAME PLANE AS SAID PLANAR SURFACE PORTION AND THE OTHER EDGE OF EACH SLOT BEING SPACED A SMALL DISTANCE FROM SAID PLANE, A RADIANT ENERGY SOURCE, AND A CELL RESPONSIVE TO RADIANT ENERGY, SAID SOURCE AND SAID CELL BEING DISPOSED ON OPPOSITE SIDES OF SAID CHAMBER IN ALIGNMENT WITH SAID SLOTS, WHEREBY PARTICLES ACCUMULATING ON SAID PLANAR SURFACE OF SAID FILTER WILL OBSTRUCT THE PATH OF RADIANT ENERGY BETWEEN SAID SOURCE AND SAID CELL.
Claim 2
Dependent Claim
140 words
IN APPARATUS FOR DETECTING PARTICLES IN FLUIDS, MEANS DEFINING A FLUID FLOW CHAMBER, A FILTER ELEMENT HAVING A SUBSTANTIALLY PLANAR SURFACE PORTION AND ARRANGED IN THE PATH OF FLUID FLOW IN SAID CHAMBER TO COLLECT PARTICLES ON SAID PLANAR SURFACE PORTION, FIRST SECOND RADIANT ENERGY SHIELDS ON OPPOSITE SIDES OF SAID CHAMBER EACH HAVING A SLOT THEREIN, ONE EDGE OF EACH SLOT BEING SUBSTANTIALLY IN THE SAME PLANE AS SAID PLANAR SURFACE PORTION AND THE OTHER EDGE OF EACH SLOT BEING SPACED A SMALL DISTANCE FROM SAID PLANE, A RADIANT ENERGY SOURCE, AND A CELL RESPONSIVE TO RADIANT ENERGY, SAID SOURCE AND SAID CELL BEING DISPOSED ON OPPOSITE SIDES OF SAID CHAMBER IN ALIGNMENT WITH SAID SLOTS, WHEREBY PARTICLES ACCUMULATING ON SAID PLANAR SURFACE OF SAID FILTER WILL OBSTRUCT THE PATH OF RADIANT ENERGY BETWEEN SAID SOURCE AND SAID CELL.
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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) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |