US3380408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air supply to chain grate
Assignee: Riley Power Inc
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Filing: 1967-03-30
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Granted: 1968-04-30
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Expires: 1987-03-30
Abstract
No abstract record available.
Inventors
- 👤 Russell C Rivers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:19
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/002; F23G5/004; F23H; F23H13/00; F23H2700/00; F23H2700/009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A TRAVELING GRATE, COMPRISING AN ENDLESS CHAIN, GRATE CLIPS FASTENED TO THE CHAIN TO DEFINE UPPER AND LOWER RUNS, AN AIR CHAMBER BETWEEN THE RUNS, A FIRST VERTICAL WALL EXTENDING PARALLEL TO THE CHAIN AND CLOSING ONE SIDE OF THE CHAMBER, A SECOND VERTICAL WALL SPACED FROM AND PARELLEL TO THE FIRST VERTICAL WALL, THE TWO WALLS DEFINING AN AIR DUCT, AN APERTURE THROUGH THE FIRST WALL THROUGH WHICH AIR MAY PASS FROM THE AIR DUCT TO THE AIR CHAMBER, A SUPPORT EXTENDING ACROSS THE APERTURE, A CONTROL ROD EXTENDING THROUGH THE FIRST WALL AND ROTATABLY MOUNTED IN THE SAID SUPPORT, A TUBE SLIDABLY CARRIED BY THE ROD, A DAMPER CARRIED BY THE TUBE AT A RIGHT ANGLE THERETO, AND THREADED MEANS EXTENDING BETWEEN THE TUBE AND ROD SO THAT WHEN THE ROD IS ROTATED THE TUBE AND DAMPER MOVE TOWARD OR AWAY FROM THE APERTURE.
Claim 2
Dependent Claim
146 words
A TRAVELING GRATE, COMPRISING AN ENDLESS CHAIN, GRATE CLIPS FASTENED TO THE CHAIN TO DEFINE UPPER AND LOWER RUNS, AN AIR CHAMBER BETWEEN THE RUNS, A FIRST VERTICAL WALL EXTENDING PARALLEL TO THE CHAIN AND CLOSING ONE SIDE OF THE CHAMBER, A SECOND VERTICAL WALL SPACED FROM AND PARELLEL TO THE FIRST VERTICAL WALL, THE TWO WALLS DEFINING AN AIR DUCT, AN APERTURE THROUGH THE FIRST WALL THROUGH WHICH AIR MAY PASS FROM THE AIR DUCT TO THE AIR CHAMBER, A SUPPORT EXTENDING ACROSS THE APERTURE, A CONTROL ROD EXTENDING THROUGH THE FIRST WALL AND ROTATABLY MOUNTED IN THE SAID SUPPORT, A TUBE SLIDABLY CARRIED BY THE ROD, A DAMPER CARRIED BY THE TUBE AT A RIGHT ANGLE THERETO, AND THREADED MEANS EXTENDING BETWEEN THE TUBE AND ROD SO THAT WHEN THE ROD IS ROTATED THE TUBE AND DAMPER MOVE TOWARD OR AWAY FROM THE APERTURE.
References Cited (Backward Citations)
US1518397A
Cited
US1656179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |