US3559967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traveling grate apparatus with heat shielding
Assignee: Arthur G McKee and Co
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Filing: 1969-03-26
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Granted: 1971-02-02
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Expires: 1989-03-26
Abstract
Abstract Traveling grate apparatus adapted to be subjected to severe and fluctuating elevated temperatures has supporting frame including metal supporting members, which members are substantially covered by metal shields secured to such supporting members with minimal contact areas, in order to provide heat insulating metal-to-air interfaces between the frame members and the shield to prolong the useful life of the frame.
Inventors
- 👤 Tage Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:34
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/06; B65G17/067; F; F27; F27B; F27B21/00; F27B21/06; B65G2201/00; B65G2201/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
129 words
In traveling grate apparatus having a moving grate and including a frame that is subjected to severe and fluctuating temperatures and that comprises at least one metal supporting member, a metal shield substantially covering the surface of said supporting member that would otherwise be exposed to heat and having a minimal attachment to the member to provide a metal-air interface adjacent said supporting member of substantial area that substantially reduces heat transferred to said member substantially to reduce deterioration of the member by heat and to prolong useful life of said member, wherein said minimal attachment includes fastening means that permits substantially unrestrained movement of said shield relative to said supporting member during thermal expansion and contraction thereof while maintaining said metal-air interface between said shield and supporting member.
Claim 2
Dependent Claim
129 words
In traveling grate apparatus having a moving grate and including a frame that is subjected to severe and fluctuating temperatures and that comprises at least one metal supporting member, a metal shield substantially covering the surface of said supporting member that would otherwise be exposed to heat and having a minimal attachment to the member to provide a metal-air interface adjacent said supporting member of substantial area that substantially reduces heat transferred to said member substantially to reduce deterioration of the member by heat and to prolong useful life of said member, wherein said minimal attachment includes fastening means that permits substantially unrestrained movement of said shield relative to said supporting member during thermal expansion and contraction thereof while maintaining said metal-air interface between said shield and supporting member.
Claim 3
Dependent Claim
29 words
The apparatus of claim 1 wherein said minimal attachment includes single fastening means securing essentially a point of the metal shield to a face of the metal supporting member.
Claim 4
Dependent Claim
30 words
The apparatus of claim 1 including spacing means interfitted between the metal shield and a face of the metal supporting member and effective to aid in forming said metal-air interface.
Claim 5
Dependent Claim
13 words
The apparatus of claim 3 wherein said spacing means is in strip form.
Claim 6
Dependent Claim
21 words
The apparatus of claim 3 wherein said interfitted spacing means is not fixedly secured to either the shield or support member.
Claim 7
Dependent Claim
15 words
The apparatus of claim 1 wherein at least one section of said shield is corrugated.
Claim 8
Dependent Claim
31 words
The apparatus of claim 1 wherein a plurality of superposed metal shields cover said interconnecting metal supporting member, each metal shield having an insulating metal-air-metal interface with its contiguous companion shield.
Claim 9
Dependent Claim
24 words
The apparatus of claim 7 wherein all of the metal shields have a common attaching means securing the shields to a metal supporting member.
Claim 10
Dependent Claim
68 words
Grate apparatus adapted to be subjected to severe and fluctuating temperatures having a frame to support a load, said frame comprising spaced-apart metal members held in fixed relation by spaced-apart crossmembers, a strip spacer on a face of said members, a metal shield fitted over members and resting upon said strip spacers, and single fastening means securing essentially a point of each shield to its protected support member.
Claim 11
Dependent Claim
68 words
Grate apparatus adapted to be subjected to severe and fluctuating temperatures having a frame to support a load, said frame comprising spaced-apart metal members held in fixed relation by spaced-apart crossmembers, a strip spacer on a face of said members, a metal shield fitted over members and resting upon said strip spacers, and single fastening means securing essentially a point of each shield to its protected support member.
Claim 12
Dependent Claim
17 words
The apparatus of claim 9 wherein said crossmembers are at a lower elevation than said metal members.
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |