Patent US5028869A successfully refreshed from Google Patents.
Patent US3572664A successfully refreshed from Google Patents.
US3572664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sinter grate
Assignee: Knapsack AG
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Filing: 1969-09-02
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Granted: 1971-03-30
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Expires: 1989-09-02
Abstract
Abstract Apparatus for the drying, calcining and sintering of ores, minerals and similar materials. The apparatus is comprised of a grate which is arranged to be drawn by chains, to be supported by bearing rollers and is laterally bounded by sideplates positioned between an upper slide bar and a lower slide bar and mechanically connected to the grate plate, and sealing elements placed between the upper and lower slide bars. The lower slide bars and the sealing elements are arranged to be supported by common supporting plates secured to a supporting frame.
Inventors
- 👤 Fritz Muller
- 👤 Winfried Schmidt
- 👤 Hugo Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:27
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/16; C22B1/20; F; F27; F27B; F27B21/00; F27B21/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
97 words
An apparatus for the drying, calcining and sintering of ores, minerals and similar materials, e.g. crude phosphate pellets, comprising a grate, arranged to be drawn by grate chains, to be supported by bearing rollers and laterally bounded by sideplates, the sideplates being positioned between an upper slide bar and a lower slide bar and mechanically connected to the grate plate, and sealing elements placed between the upper and lower slide bars, wherein the lower slide bars and the sealing elements are arranged to be supported by supporting plates common to them and secured to a supporting frame.
Claim 2
Independent Claim
97 words
An apparatus for the drying, calcining and sintering of ores, minerals and similar materials, e.g. crude phosphate pellets, comprising a grate, arranged to be drawn by grate chains, to be supported by bearing rollers and laterally bounded by sideplates, the sideplates being positioned between an upper slide bar and a lower slide bar and mechanically connected to the grate plate, and sealing elements placed between the upper and lower slide bars, wherein the lower slide bars and the sealing elements are arranged to be supported by supporting plates common to them and secured to a supporting frame.
Claim 3
Dependent Claim
23 words
The apparatus as claimed in claim 1, wherein the supporting plates have upwardly angled ends extended to reach behind the lower slide bars.
Claim 4
Dependent Claim
27 words
The apparatus as claimed in claim 1, wherein the supporting plates are arranged to be screwed firstly to the supporting frame and secondly to the sealing elements.
Claim 5
Dependent Claim
36 words
The apparatus as claimed in claim 1, wherein the lower slide bars are arranged to be loosely supported by the supporting plates and to be held in contact with the angled ends of the supporting plates.
Claim 6
Dependent Claim
39 words
The apparatus as claimed in claim 1, wherein the lower and upper ends of the sealing elements are arranged to be angled away from the grate plate, whereby the angled upper ends provide support for the upper slide bars.
Claim 7
Dependent Claim
37 words
The apparatus as claimed in claim 1, wherein the upper slide bar has a ledge secured to it, the ledge being arranged so as to be level with and so as to be spaced from the sideplates.
References Cited (Backward Citations)
US3172936A
Cited
US3094577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |