Patent US3148614A successfully refreshed from Google Patents.
US3148614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust-collecting hood
Assignee: United States Steel Corp
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Filing: 1961-12-19
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Granted: 1964-09-15
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Expires: 1981-12-19
Abstract
No abstract record available.
Inventors
- 👤 Joy W Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:10
CPC Classifications
B; B22; B22D; B22D45/00; B22D45/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A DUST-COLLECTING HOOD COMPRISING AN UPSTANDING STATIONARY SECTION FORMED OF SPACED-APART INSIDE AND OUTSIDE WALLS, AN EXHAUST DUCT CONNECTED TO SAID OUTSIDE WALL AND COMMUNICATING WITH THE SPACE BETWEEN WALLS, A COOPERATING MOVABLE SECTION OF INVERTED U-SHAPE SUPPORTED TO MOVE OVER SAID STATIONARY SECTION, SAID MOVABLE SECTION HAVING OPPOSED SIDES AND A CONNECTING TOP FORMED OF SPACED-APART INSIDE AND OUTSIDE WALLS WITH THE SPACES BETWEEN WALLS AT THE SIDES BEING IN COMMUNICATION WITH THE SPACE BETWEEN WALLS AT THE TOP, THE INSIDE WALLS OF SAID STATIONARY SECTION AND OF THE SIDES AND TOP OF SAID MOVABLE SECTION HAVING INLET OPENINGS FOR ADMITTING AIR AND DUST INTO THE SPACES BETWEEN WALLS OF THE RESPECTIVE SECTIONS, THE INSIDE WALLS OF SAID MOVABLE SECTION ALSO HAVING OUTLET OPENINGS, SAID MOVABLE SECTION HAVING A DUST-COLLECTING POSITION IN WHICH SAID OUTLET OPENINGS COMMUNICATE WITH THE SPACE BETWEEN WALLS OF SAID STATIONARY SECTION, SAID MOVABLE SECTION ALSO HAVING A RETRACTED POSITION FOR PLACING AND REMOVING ARTICLES, AND MEANS OPERATIVELY CONNECTED WITH SAID MOVABLE SECTION FOR MOVING IT BETWEEN SAID POSITIONS.
Claim 2
Dependent Claim
174 words
A DUST-COLLECTING HOOD COMPRISING AN UPSTANDING STATIONARY SECTION FORMED OF SPACED-APART INSIDE AND OUTSIDE WALLS, AN EXHAUST DUCT CONNECTED TO SAID OUTSIDE WALL AND COMMUNICATING WITH THE SPACE BETWEEN WALLS, A COOPERATING MOVABLE SECTION OF INVERTED U-SHAPE SUPPORTED TO MOVE OVER SAID STATIONARY SECTION, SAID MOVABLE SECTION HAVING OPPOSED SIDES AND A CONNECTING TOP FORMED OF SPACED-APART INSIDE AND OUTSIDE WALLS WITH THE SPACES BETWEEN WALLS AT THE SIDES BEING IN COMMUNICATION WITH THE SPACE BETWEEN WALLS AT THE TOP, THE INSIDE WALLS OF SAID STATIONARY SECTION AND OF THE SIDES AND TOP OF SAID MOVABLE SECTION HAVING INLET OPENINGS FOR ADMITTING AIR AND DUST INTO THE SPACES BETWEEN WALLS OF THE RESPECTIVE SECTIONS, THE INSIDE WALLS OF SAID MOVABLE SECTION ALSO HAVING OUTLET OPENINGS, SAID MOVABLE SECTION HAVING A DUST-COLLECTING POSITION IN WHICH SAID OUTLET OPENINGS COMMUNICATE WITH THE SPACE BETWEEN WALLS OF SAID STATIONARY SECTION, SAID MOVABLE SECTION ALSO HAVING A RETRACTED POSITION FOR PLACING AND REMOVING ARTICLES, AND MEANS OPERATIVELY CONNECTED WITH SAID MOVABLE SECTION FOR MOVING IT BETWEEN SAID POSITIONS.
References Cited (Backward Citations)
US2420520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |