Patent US3170678A successfully refreshed from Google Patents.
US3170678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerative furnace draft reversal apparatus
Assignee: OI Glass Inc
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Filing: 1962-06-20
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Granted: 1965-02-23
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Expires: 1982-06-20
Abstract
No abstract record available.
Inventors
- 👤 George E Keefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:17
CPC Classifications
F; F28; F28D; F28D17/00; F28D17/04; C; C03; C03B; C03B5/00; C03B5/16; C03B5/235; C03B5/237; F27; F27B; F27B3/00; F27B3/10; F27B3/26; F27B3/263; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y10; Y10T; Y10T137/00; Y10T137/5544
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A REVERSAL VALVING APPARATUS FOR A REGENERATIVE TYPE COMBUSTION FURNACE, SAID APPARATUS BEING ADAPTED FOR ALTERNATE COMMUNICATION WITH FIRST ONE AND THEN THE OTHER OF CANAL PORTS LEADING FROM OPPOSED REGENERATIVE CHAMBERS OF SAID FURNACE, SAID PORTS BEING LOCATED ON PROXIMATE RELATIONSHIP, SAID APPARATUS COMPRISING VERTICALLY ARCUATE TRACK MEANS, SAID TRACK MEAN BEING ADAPTED TO EXTEND COEXTENSIVELY WITH SAID PORTS, PLENUM CHAMBER MEANS HAVING AN UPPER OUTLET AND A LOWR INLET END, SAID UPPER OUTLET BEING ADAPTED FOR PIVOTABLE CONNECTION TO AN EXHAUST STACK, ROLLABLE SUPPORT MEANS CARRIED ON SAID LOWER INLET END, SAID ROLLABLE SUPPORT MEANS BEING AND MEANS FOR ROLLING ENGAGEMENT WITH SAID TRACK MEANS AND MEANS FOR SHIFTING SAID LOWER INLET END, VIA SAID SUPPORT MEANS, IN AN ARCUATE PATH ALONG SAID TRACK MENS FROM A POSITION ADAPTED FOR COMMUNICATION WITH ONE OF SAID PORTS TO A POSITION ADAPTED FOR COMMUNICATION WITH THE OTHER OF SAID PORTS.
Claim 2
Dependent Claim
150 words
A REVERSAL VALVING APPARATUS FOR A REGENERATIVE TYPE COMBUSTION FURNACE, SAID APPARATUS BEING ADAPTED FOR ALTERNATE COMMUNICATION WITH FIRST ONE AND THEN THE OTHER OF CANAL PORTS LEADING FROM OPPOSED REGENERATIVE CHAMBERS OF SAID FURNACE, SAID PORTS BEING LOCATED ON PROXIMATE RELATIONSHIP, SAID APPARATUS COMPRISING VERTICALLY ARCUATE TRACK MEANS, SAID TRACK MEAN BEING ADAPTED TO EXTEND COEXTENSIVELY WITH SAID PORTS, PLENUM CHAMBER MEANS HAVING AN UPPER OUTLET AND A LOWR INLET END, SAID UPPER OUTLET BEING ADAPTED FOR PIVOTABLE CONNECTION TO AN EXHAUST STACK, ROLLABLE SUPPORT MEANS CARRIED ON SAID LOWER INLET END, SAID ROLLABLE SUPPORT MEANS BEING AND MEANS FOR ROLLING ENGAGEMENT WITH SAID TRACK MEANS AND MEANS FOR SHIFTING SAID LOWER INLET END, VIA SAID SUPPORT MEANS, IN AN ARCUATE PATH ALONG SAID TRACK MENS FROM A POSITION ADAPTED FOR COMMUNICATION WITH ONE OF SAID PORTS TO A POSITION ADAPTED FOR COMMUNICATION WITH THE OTHER OF SAID PORTS.
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |