US3887064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Walking beam conveyor in a furnace
Assignee: BROBU INDUSTRIE OFENBAU
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Filing: 1973-10-26
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Granted: 1975-06-03
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Expires: 1993-10-26
Abstract
Abstract A furnace having an elongated heat tunnel through which work passes to be heated therein. A pair of vertically reciprocally movable sets of beams extends longitudinally of the heat tunnel and forms a surface for supporting the work. At least one set of beams is simultaneously movable in the transport direction, and one set of beams is at all times situated at maximum vertical height so that the work moves only horizontally through the furnace.
Inventors
- 👤 Heinz Brockmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:21
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/201; F27B9/202; F27B9/205
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
153 words
In a heat tunnel having a walking beam conveyor arrangement for transporting work through said heat tunnel in a horizontal feed direction wherein the conveyor arrangement comprises, in combination, a first vertically reciprocable work-supporting beam, a second horizontally reciprocable work-supporting beam, each of the first and second beams having a substantially horizontal work-contacting surface, and actuating means for relatively moving the first and second beams in timed relation in alternate engagement with the work to advance the work through the heat tunnel, the improvement wherein the second beam is provided with facilities for vertical reciprocation to a height chosen such that the uppermost position of its work-supporting surface is substantially level with the uppermost position of the work-supporting surface of the first beam, and wherein the actuating means includeS facilities for maintaining the worksupporting surface of each of the first and second beams in its uppermost position when in contact with the work.
Claim 2
Dependent Claim
153 words
In a heat tunnel having a walking beam conveyor arrangement for transporting work through said heat tunnel in a horizontal feed direction wherein the conveyor arrangement comprises, in combination, a first vertically reciprocable work-supporting beam, a second horizontally reciprocable work-supporting beam, each of the first and second beams having a substantially horizontal work-contacting surface, and actuating means for relatively moving the first and second beams in timed relation in alternate engagement with the work to advance the work through the heat tunnel, the improvement wherein the second beam is provided with facilities for vertical reciprocation to a height chosen such that the uppermost position of its work-supporting surface is substantially level with the uppermost position of the work-supporting surface of the first beam, and wherein the actuating means includeS facilities for maintaining the worksupporting surface of each of the first and second beams in its uppermost position when in contact with the work.
Claim 3
Dependent Claim
153 words
In a heat tunnel having a walking beam conveyor arrangement for transporting work through said heat tunnel in a horizontal feed direction wherein the conveyor arrangement comprises, in combination, a first vertically reciprocable work-supporting beam, a second horizontally reciprocable work-supporting beam, each of the first and second beams having a substantially horizontal work-contacting surface, and actuating means for relatively moving the first and second beams in timed relation in alternate engagement with the work to advance the work through the heat tunnel, the improvement wherein the second beam is provided with facilities for vertical reciprocation to a height chosen such that the uppermost position of its work-supporting surface is substantially level with the uppermost position of the work-supporting surface of the first beam, and wherein the actuating means includeS facilities for maintaining the work-supporting surface of each of the first and second beams in its uppermost position when in contact with the work.
Claim 4
Dependent Claim
153 words
In a heat tunnel having a walking beam conveyor arrangement for transporting work through said heat tunnel in a horizontal feed direction wherein the conveyor arrangement comprises, in combination, a first vertically reciprocable work-supporting beam, a second horizontally reciprocable work-supporting beam, each of the first and second beams having a substantially horizontal work-contacting surface, and actuating means for relatively moving the first and second beams in timed relation in alternate engagement with the work to advance the work through the heat tunnel, the improvement wherein the second beam is provided with facilities for vertical reciprocation to a height chosen such that the uppermost position of its work-supporting surface is substantially level with the uppermost position of the work-supporting surface of the first beam, and wherein the actuating means includeS facilities for maintaining the work-supporting surface of each of the first and second beams in its uppermost position when in contact with the work.
Claim 5
Dependent Claim
57 words
In a heat tunnel, the walking beam conveyor arrangement as set forth in claim 1, wherein said actuating means are adapted to be selectively disconnected from said first beam so that said first and second beams only move vertically reciprocally and the movement of the work in the feed direction through said heat tunnel is thereby interrupted.
Claim 6
Dependent Claim
33 words
In a heat tunnel, the walking beam conveyor arrangement as set forth in claim 2, including water-cooling means operatively connected to each said first and second beams for cooling the associated workcontacting surface.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |