US4526538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for supporting flat ceramic objects to be fired in a continuously heating furnace
Assignee: Haldenwanger W KG
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Filing: 1984-01-13
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Granted: 1985-07-02
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Expires: 2004-01-13
Abstract
Abstract A device for supporting flat ceramic objects, particularly glazed floor or wall tiles, to be fired in a continuous heating furnace where the objects can be moved on rollers which are in the form of tubes. These tubes are equipped with raised and indented portions with the objects to be fired only being supported by the raised portions during transport through the furnace.
Inventors
- 👤 Dietrich Redell
- 👤 Dieter Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:21
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/02; F27D3/026; B; B65; B65G; B65G39/00; B65G39/02; C; C04; C04B; C04B33/00; C04B33/32; C04B33/34; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/24; F27B9/2407
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
67 words
A device for supporting and conveying flat ceramic objects to be fired in a continuous heating furnace comprising: a plurality of co-planar rollers each rotatable about a longitudinally extending central axis, the rollers having a tubular configuration with an outer surface, each roller having a plurality of radially extending, circumferentially spaced, alternating, raised and indented portions formed in the outer surface and extending longitudinally along each roller.
Claim 2
Independent Claim
67 words
A device for supporting and conveying flat ceramic objects to be fired in a continuous heating furnace comprising: a plurality of co-planar rollers each rotatable about a longitudinally extending central axis, the rollers having a tubular configuration with an outer surface, each roller having a plurality of radially extending, circumferentially spaced, alternating, raised and indented portions formed in the outer surface and extending longitudinally along each roller.
Claim 3
Dependent Claim
13 words
The device of claim 1 wherein the rollers have a star-shaped cross section.
Claim 4
Dependent Claim
22 words
The device of claim 1 wherein the rollers have a star-shaped cross section with rounded raised portions (2) and indented portions (3).
Claim 5
Dependent Claim
23 words
The device of claim 1 further including a plurality of radially extending, longitudinally spaced projections formed on the raised portions of the rollers.
Claim 6
Dependent Claim
14 words
The device of claim 1 wherein the rollers are fabricated from a ceramic material.
Claim 7
Dependent Claim
13 words
The device of claim 1 wherein the rollers are fabricated from metallic material.
Claim 8
Dependent Claim
31 words
The device of claim 1 wherein the raised portions terminate in a pointed apex, the object being supported and transported only on the apex of the raised portions of each roller.
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) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |