Patent US2869991A successfully refreshed from Google Patents.
US2869991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus incorporating a vibrating grate
Assignee: Humphreys and Glasgow Ltd
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Filing: 1954-08-23
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Granted: 1959-01-20
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Expires: 1974-08-23
Abstract
No abstract record available.
Inventors
- 👤 Williams Norman Henry
- 👤 Hawkes Charles Trevor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:27
CPC Classifications
B; B01; B01D; B01D15/00; B01D15/08; B01J; B01J8/00; B01J8/16; B01J8/18; B01J8/24; B01J8/44; B65; B65D; B65D90/00; B65D90/54; C; C10; C10K; C10K1/00; C10K1/20; C10K1/22; C10K1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
APPARATUS FOR PROVING A BOTTOM SUPPORT FOR A BED OF SOLID TO BE CONTACTED WITH A FLUID WHICH APPARATUS COMPRISES A HOPPER, A FRAME MOUNTED ON THE BOTTOM OF SAID HOPPER FOR RECIPROCAL MOVEMENT LATERALLY OF SAID HOPPER, A PLURALITY OF PROFILED MEMBERS IMMOVABLY SECURED IN MATUALLY PARELL RELATIONSHIP ACROSS SAID FRAME EACH OF SAID PROFILED MEMBERS BEING PROFILED TO PROVIDE A LOWER, GENERALLY FLAT, GRATE BAR AND AN UPPER LIMITED-SUPPORT SLAT, SURMOUNTING SAID GRATE BAR THE PORTION OF SAID PROFILED MEMBER CONSTITUTING SAID GRATE BAR BEING INCLINE TO THE HORIZONTAL AT AN ANGLE LESS THAN, AND THE PORTION OF SAID PROFLED MEMBER CONSTITUTING SAID LIMITED SUPPORT SLAT BEING INCLINED TO THE HORIZATIONAL AT AN ANGLE GREATER THAN, THE NATURAL ANGLE OF REPOSE AFTER THEY HAVE BEEN VIBERATED OF THE SOLIDS TO BE SUPPORTED, SAID PROFLED MEMBERS BEING SPACED APART A DISTASNCE WHICH IS SUFFCIENT TO ALLOW SAID TO FALL ONTO SAID GRATE BARS AND WHICH
Claim 2
Dependent Claim
156 words
APPARATUS FOR PROVING A BOTTOM SUPPORT FOR A BED OF SOLID TO BE CONTACTED WITH A FLUID WHICH APPARATUS COMPRISES A HOPPER, A FRAME MOUNTED ON THE BOTTOM OF SAID HOPPER FOR RECIPROCAL MOVEMENT LATERALLY OF SAID HOPPER, A PLURALITY OF PROFILED MEMBERS IMMOVABLY SECURED IN MATUALLY PARELL RELATIONSHIP ACROSS SAID FRAME EACH OF SAID PROFILED MEMBERS BEING PROFILED TO PROVIDE A LOWER, GENERALLY FLAT, GRATE BAR AND AN UPPER LIMITED-SUPPORT SLAT, SURMOUNTING SAID GRATE BAR THE PORTION OF SAID PROFILED MEMBER CONSTITUTING SAID GRATE BAR BEING INCLINE TO THE HORIZONTAL AT AN ANGLE LESS THAN, AND THE PORTION OF SAID PROFLED MEMBER CONSTITUTING SAID LIMITED SUPPORT SLAT BEING INCLINED TO THE HORIZATIONAL AT AN ANGLE GREATER THAN, THE NATURAL ANGLE OF REPOSE AFTER THEY HAVE BEEN VIBERATED OF THE SOLIDS TO BE SUPPORTED, SAID PROFLED MEMBERS BEING SPACED APART A DISTASNCE WHICH IS SUFFCIENT TO ALLOW SAID TO FALL ONTO SAID GRATE BARS AND WHICH
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |