US3584849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Equipment for firing ceramic and other kilns or furnaces
Assignee: Individual
•
Filing: 1969-07-22
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Granted: 1971-06-15
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Expires: 1989-07-22
Abstract
Abstract A kiln or the like is heated by two oppositely placed burners whose supply with air and/or fuel is regulated by two valves which are offset in phase, e.g. by 180*.
Inventors
- 👤 Gottfried Cremer
- 👤 Heinz Behrens
- 👤 Peter Schwamborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:56
CPC Classifications
F; F27; F27D; F27D99/00; F27D99/0001; F27D99/0033; F23; F23D; F23D14/00; F23D14/46; F23D14/60
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
101 words
Heat regulation for tunnel kilns, or the like, having oppositely disposed spaced walls, comprising a burner in each wall directed toward each other, fuel supply including ducts for said burners respectively, valves for said ducts respectively for controlling the fuel supply to said burners, each valve being movable and constructed and arranged to cause the fuel supply to the respective burners to vary gradually from zero value to a maximum value and then back to a zero value, and means for imparting continuous movement to the respective valves in such manner that their opening and closing times are offset in phase.
Claim 2
Dependent Claim
101 words
Heat regulation for tunnel kilns, or the like, having oppositely disposed spaced walls, comprising a burner in each wall directed toward each other, fuel supply including ducts for said burners respectively, valves for said ducts respectively for controlling the fuel supply to said burners, each valve being movable and constructed and arranged to cause the fuel supply to the respective burners to vary gradually from zero value to a maximum value and then back to a zero value, and means for imparting continuous movement to the respective valves in such manner that their opening and closing times are offset in phase.
Claim 3
Dependent Claim
17 words
An installation in accordance with claim 1 in which the valves are offset in phase by 180*.
Claim 4
Dependent Claim
39 words
An installation in accordance with claim 1 in which each valve comprises a rotary disc with an obliquely set edge, and means defining a port arranged to be opened and closed by the edge during rotation of the disc.
Claim 5
Dependent Claim
14 words
An installation in accordance with claim 3 comprising explosionproof housing means enclosing the motors.
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |