Patent US3168299A successfully refreshed from Google Patents.
US3168299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for tunnel kilns
Assignee: Individual
•
Filing: 1963-07-16
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Granted: 1965-02-02
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Expires: 1983-07-16
Abstract
No abstract record available.
Inventors
- 👤 Boyd C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:36
CPC Classifications
F; F27; F27D; F27D99/00; F27D99/0073; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
IN A KILN HAVING OPPOSED SIDE WALLS, A FLOOR, LONGITUDINALLY EXTENDING SPACED, PARALLEL RAILS POSITIONED IN THE LOWER PORTION THEREOF, ONE OR MORE WARE SUPPORTING PLATFORMS GUIDABLY SUPPORTED FOR LONGITUDINAL MOVEMENT ABOVE SAID FLOORS; THE COMBINATION OF (A) MEANS SUPPORTING SAID PLATFORMS FOR SLIDING MOVEMENT ON SAID RAILS AND FOR SEALING THE AREA INTERMEDIATE THE RAILS FROM THE AREA THEREABOVE, SAID PLATFORM SUPPORTING MEANS COMPRISING (1) RAIL CAPS FOR FRICTION REDUCING MATERIAL MOUNTED ON THE UPPER SURFACE OF EACH OF SAID RAILS, (2) LONGITUDINAL BEAMS EXTENDING DOWNWARDLY FROM THE UNDERSURFACE OF EACH CORRESPONDING PLATFORM AND IN ALINEMENT WITH SAID RAILS, AND
References Cited (Backward Citations)
US2853289A
Cited
US2982530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |