US3824936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic suspended roof construction for industrial furnaces
Assignee: Merkle Engineers Inc
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Filing: 1973-02-28
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Granted: 1974-07-23
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Expires: 1993-02-28
Abstract
Abstract A high-temperature industrial furnace roof construction comprises a plurality of basic refractory brick assembly units depending downwardly from an elongated rod member which is suspended from a suitable frame. Each basic refractory brick assembly unit comprises a basic carrier brick of a generally rectangular configuration with flat, planar faces and having a reduced head portion and body portion. The reduced head portion is provided with a transverse aperture for receiving the elongated rod member and with a substantially planar recess normal to the axis of the aperture, and the body portion is provided with a shoulder means adjacent to the juncture of the body portion and the head portion on opposing faces of the body portion substantially parallel to the axis of the aperture. A basic filler brick of a generally rectangular configuration with flat, planar faces is suspended from the carrier brick by means of a supporting lug on one face of the filler brick which engages the shoulder means on the carrier brick.
Inventors
- 👤 F Merkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:56
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/02; F27D1/021
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
194 words
Suspended roof construction for a high temperature furnace including a support frame, hanger means depending downwardly from said support frame, an elongated rod member supported by said hanger means in a spaced relationship from said support frame, and a plurality of basic refractory brick assembly units received on said elongated rod member and depending downwardly from said elongated rod member, each basic refractory brick assembly unit comprising a basic refractory carrier brick of a generally rectangular configuration with flat, planar faces and having a reduced head portion and a body portion; said reduced head portion being provided with a transverse aperture and with a substantially planar recess normal to the axis of said aperture, and said body portion being provided with shoulder means adjacent to the juncture of the body portion and the head portion of opposing faces of the body portion substantially parallel to the axis of said aperture; and at least one basic refractory filler brick of a generally rectangular configuration with flat, planar faces and having a supporting lug on one face thereof, said supporting lug engaging one of said shoulder means and suspending said filler brick from said carrier brick.
Claim 2
Dependent Claim
194 words
Suspended roof construction for a high temperature furnace including a support frame, hanger means depending downwardly from said support frame, an elongated rod member supported by said hanger means in a spaced relationship from said support frame, and a plurality of basic refractory brick assembly units received on said elongated rod member and depending downwardly from said elongated rod member, each basic refractory brick assembly unit comprising a basic refractory carrier brick of a generally rectangular configuration with flat, planar faces and having a reduced head portion and a body portion; said reduced head portion being provided with a transverse aperture and with a substantially planar recess normal to the axis of said aperture, and said body portion being provided with shoulder means adjacent to the juncture of the body portion and the head portion of opposing faces of the body portion substantially parallel to the axis of said aperture; and at least one basic refractory filler brick of a generally rectangular configuration with flat, planar faces and having a supporting lug on one face thereof, said supporting lug engaging one of said shoulder means and suspending said filler brick from said carrier brick.
Claim 3
Dependent Claim
43 words
The suspended roof construction of claim 1 wherein the reduced head portion of said basic refractory carrier brick is provided with a substantially planar recess normal to the axis of said aperture on one of two opposing faces of the reduced head portion.
Claim 4
Dependent Claim
43 words
The suspended roof construction of claim 1 wherein the reduced head portion of said basic refractory carrier brick is provided with a substantially planar recess normal to the axis of said aperture on each of two opposing faces of the reduced head portion.
Claim 5
Dependent Claim
46 words
The suspended roof construction of claim 1 wherein a basic refractory filler brick is suspended from each shoulder means of said basic refractory carrier brick and the flat, planar faces opposite the face having said supporting lug abuts the similar face of an adjacent assembly unit.
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |