US4253393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of marking hot material and apparatus therefor
Assignee: JFE Steel Corp
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Filing: 1978-07-14
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Granted: 1981-03-03
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Expires: 1998-07-14
Abstract
Abstract A combustible stencil held by holders is disposed at a position some distance apart from the end face of a hot material; immediately thereafter, a coating composition is sprayed onto the hot material through perforations in the stencil from behind to carry out the marking; the stencil is used only once and burned by the potential heat of the hot material upon marking; and a new stencil is used each time for marking. The combustion starting time is controlled by previously moistening the stencil as necessary.
Inventors
- 👤 Akimone Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:55
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/12; B41F; B41F15/00; B41F15/08; B41F15/0881; Y; Y10; Y10S; Y10S164/00; Y10S164/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
221 words
An apparatus for marking hot materials such as slabs and blooms which are moving on a conveying course, wherein said apparatus comprises: a stencil supply device having means for producing and supplying stencils spaced apart from said conveying course of said hot materials; a truck movable in a direction perpendicular to said conveying course between said conveying course and said stencil supply device; a pair of elongated swivel arms rotatably supported by the truck; a nozzle movable integrally with said swivel arms for spraying a coating composition from behind the stencil; holders provided at forward portions of said arms respectively, for holding substantially opposite end portions of the stencil; and driving means provided on said truck for rotating said arms from a first position wherein said forward portions of said arms are above a horizontal plane as said truck approaches said stencil supply device to a second position wherein said arms are in a substantially horizontal position when said truck is at said stencil supply device where said holders receive the stencil from said stencil supply device and to a third position wherein said arms are in a vertical position when said truck is at said conveying course and where the stencil held is caused to approach an end face of the hot material onto which the marking is carried out.
Claim 2
Independent Claim
221 words
An apparatus for marking hot materials such as slabs and blooms which are moving on a conveying course, wherein said apparatus comprises: a stencil supply device having means for producing and supplying stencils spaced apart from said conveying course of said hot materials; a truck movable in a direction perpendicular to said conveying course between said conveying course and said stencil supply device; a pair of elongated swivel arms rotatably supported by the truck; a nozzle movable integrally with said swivel arms for spraying a coating composition from behind the stencil; holders provided at forward portions of said arms respectively, for holding substantially opposite end portions of the stencil; and driving means provided on said truck for rotating said arms from a first position wherein said forward portions of said arms are above a horizontal plane as said truck approaches said stencil supply device to a second position wherein said arms are in a substantially horizontal position when said truck is at said stencil supply device where said holders receive the stencil from said stencil supply device and to a third position wherein said arms are in a vertical position when said truck is at said conveying course and where the stencil held is caused to approach an end face of the hot material onto which the marking is carried out.
Claim 3
Dependent Claim
43 words
An apparatus for marking a hot material, as set forth in claim 1, characterized in that: said swivel arms having a stopper which abuts against the end face of the hot material to thereby control the angle of turn of the swivel arms.
Claim 4
Dependent Claim
49 words
An apparatus for marking a hot material, as set forth in claim 1, characterized in that: said apparatus is further provided with a descaling device for removing the scale and cooling the end face of the hot material by spraying water onto said end face prior to the marking.
Claim 5
Dependent Claim
64 words
An apparatus for marking hot material, as set forth in claim 3, characterized in that: said descaling device comprises a header communicating with a water supply via a hose and a cylinder for vertically moving said header whereby said header is vertically oscillated to a position adjacent an end face of the hot material and a position subjacent an end of the hot material.
Claim 6
Dependent Claim
29 words
An apparatus for marking a hot material, as set forth in claim 1, characterized in that: said holders hold substantially opposite end portions of the stencil under negative pressure.
Claim 7
Dependent Claim
47 words
An apparatus for marking a hot material, as set forth in claim 1, characterized in that: the holder provided on the forward portion of the swivel arms are biased by resilient force in a direction to separate the holders from the end face of the hot material.
Claim 8
Dependent Claim
50 words
An apparatus for marking a hot material, as set forth in claim 1, characterized in that: one of the pair of the swivel arms is rotatable in a direction to separate it from the other arm when in said vertical position thereby tensioning the stencil held by the swivel arms.
Claim 9
Dependent Claim
36 words
An apparatus for marking a hot material, as set forth in claim 7, characterized in that: said arms are caused to separate by abutting a cam installed on said truck against one of the swivel arms.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |