US3269714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous heat treating apparatus
Assignee: United States Steel Corp
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Filing: 1964-02-17
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Granted: 1966-08-30
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Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 Robert T Mckie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:02
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/40; F26B13/00; F26B13/06; F26B13/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
APPARATUS FOR CONTINUOUSLY HEAT TREATING A MOVING ELONGATED OBJECT WHICH COMPRISES A HEATING ZONE FOR SAID STRIP, A COOLING CHAMBER FOR SAID STRIP, MEANS INCLUDING A CONDUIT FOR DELIVERING A PROTECTIVE ATMOSPHERE TO SAID COOLING CHAMBER, A NORMALLY CLOSED VALVE IN SAID CONDUIT FOR CONTROLLING FLOW OF PROTECTIVE ATMOSPHERE TO SAID COOLING CHAMBER, MEANS FOR MOVING SAID OBJECT SUCCESSIVELY THROUGH SAID HEATING ZONE AND SAID COOLING CHAMBER, AND MEANS FOR AUTOMATICALLY OPENING SAID VALVE WHEN MOVEMENT OF SAID OBJECT THROUGH SAID COOLING CHAMBER BEGINS TO STOP TO ADMIT PROTECTIVE ATMOSPHERE.
Claim 2
Dependent Claim
90 words
APPARATUS FOR CONTINUOUSLY HEAT TREATING A MOVING ELONGATED OBJECT WHICH COMPRISES A HEATING ZONE FOR SAID STRIP, A COOLING CHAMBER FOR SAID STRIP, MEANS INCLUDING A CONDUIT FOR DELIVERING A PROTECTIVE ATMOSPHERE TO SAID COOLING CHAMBER, A NORMALLY CLOSED VALVE IN SAID CONDUIT FOR CONTROLLING FLOW OF PROTECTIVE ATMOSPHERE TO SAID COOLING CHAMBER, MEANS FOR MOVING SAID OBJECT SUCCESSIVELY THROUGH SAID HEATING ZONE AND SAID COOLING CHAMBER, AND MEANS FOR AUTOMATICALLY OPENING SAID VALVE WHEN MOVEMENT OF SAID OBJECT THROUGH SAID COOLING CHAMBER BEGINS TO STOP TO ADMIT PROTECTIVE ATMOSPHERE.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |