US2720109A
Expired / Lapsed
US
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Powder density determination
Assignee: Wyeth Holdings LLC
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Filing: 1951-01-13
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Granted: 1955-10-11
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Expires: 1971-01-13
Abstract
No abstract record available.
Inventors
- 👤 Stirn Frank Edwin
- 👤 Taylor Arthur Sinclair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:54
CPC Classifications
G; G01; G01N; G01N9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
AN APPARATUS FOR DETERMINING THE APPARENT DENSITY OF A POWDER WHICH COMPRISES A SUPPORT FRAME, A POWDER HOPPER ABOVE SAID SUPPORT FRAME, AND AGITATING MEANS IN SAID POWDER HOPPER, GUIDE MEANS ATTACHED TO THE SUPPORT FRAME HAVING AN APERTURE THERETHROUGH COMMUNICATING WITH THE INTERIOR OF SAID HOPPER, RELATIVELY MOVABLE SLIDE MEANS GUIDED BY SAID GUIDE MEANS, SAID SLIDE HAVING A POSITIONING CONE THEREIN, A CHAMBER BARREL, A NOSE FUNCTIONALLY INTEGRAL WITH SAID CHAMBER BARREL, SAID NOSE BEING OF SUCH CONFIGURATION AS TO MATCH THE POSITIONING CONE AND BE POSITIONED THEREBY WITH THE SURFACE OF SAID NOSE CONTINUOUS WITH A SURFACE OF SAID SLIDE MEANS, A FORAMINOUS MATERIAL IN SAID CHAMBER BARREL, A VALVE MEANS, PASSAGE MEANS FROM THE LOWER SIDE OF SAID FORAMINOUS MATERIAL TO SAID VALVE MEANS, A VACUUM LEAD AND A PRESSURE LEAD, SAID VALVE MEANS BEING OPEABLE TO CONNECT EITHER SAID VACUUM LEAD OR SAID PRESSURE LEAD TO THE FORAMINOUS MATERIAL, WHEREBY A POWDER CHARGE MAY BE DRAWN INTO THE CHAMBER BARREL AND RELEASED THEREFROM.
Claim 2
Independent Claim
168 words
AN APPARATUS FOR DETERMINING THE APPARENT DENSITY OF A POWDER WHICH COMPRISES A SUPPORT FRAME, A POWDER HOPPER ABOVE SAID SUPPORT FRAME, AND AGITATING MEANS IN SAID POWDER HOPPER, GUIDE MEANS ATTACHED TO THE SUPPORT FRAME HAVING AN APERTURE THERETHROUGH COMMUNICATING WITH THE INTERIOR OF SAID HOPPER, RELATIVELY MOVABLE SLIDE MEANS GUIDED BY SAID GUIDE MEANS, SAID SLIDE HAVING A POSITIONING CONE THEREIN, A CHAMBER BARREL, A NOSE FUNCTIONALLY INTEGRAL WITH SAID CHAMBER BARREL, SAID NOSE BEING OF SUCH CONFIGURATION AS TO MATCH THE POSITIONING CONE AND BE POSITIONED THEREBY WITH THE SURFACE OF SAID NOSE CONTINUOUS WITH A SURFACE OF SAID SLIDE MEANS, A FORAMINOUS MATERIAL IN SAID CHAMBER BARREL, A VALVE MEANS, PASSAGE MEANS FROM THE LOWER SIDE OF SAID FORAMINOUS MATERIAL TO SAID VALVE MEANS, A VACUUM LEAD AND A PRESSURE LEAD, SAID VALVE MEANS BEING OPEABLE TO CONNECT EITHER SAID VACUUM LEAD OR SAID PRESSURE LEAD TO THE FORAMINOUS MATERIAL, WHEREBY A POWDER CHARGE MAY BE DRAWN INTO THE CHAMBER BARREL AND RELEASED THEREFROM.
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) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |