Patent US3931898A successfully refreshed from Google Patents.
US3931898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for conditioning ore heat-treating furnace throat
Assignee: Individual
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Filing: 1975-03-06
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Granted: 1976-01-13
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Expires: 1995-03-06
Abstract
Abstract A machine for conditioning an ore heat-treating furnace throat in which there is provided a turnable column mounted on a self-propelled truck and carrying a guide bar for a beam with an actuating mechanism. The actuating mechanism is articulated on a hollow beam and constitutes a scraper with two side edges and one front edge, with the latter carrying a hinged rod, and an air cylinder adapted for traversing the actuating mechanism being located in the interior of said beam.
Inventors
- 👤 Eduard Konstantinovich Karnobatsky
- 👤 Dmitry Grigorievich Linnik
- 👤 Ivan Yakovlevich Stovbur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:09
CPC Classifications
F; F27; F27D; F27D25/00; F27D25/001; E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/283; E02F3/286; E02F3/36; E02F3/38; F27D11/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
139 words
A machine for conditioning an ore heat-treating furnace throat comprising: a self-propelled truck; a column; means mounting said column on said selfpropelled truck to be free to swing about a vertical axis; a tubular guide bar articulated to said column to be free to rotate about a horizontal axis; a hollow beam incorporated in said tubular guide bar; an actuating mechanism articulated on said hollow beam and constituting a scraper provided with two side edges and one front edge; a rod hinged on said front edge for movement about a horizontal axis; an air cylinder arranged in the interior of said beam and serving to transverse said actuating mechanism, said cylinder having a movable member and a stationary member; the cylinder movable member being articulated with said beam and the stationary member being articulated with said tubular guide bar.
Claim 2
Dependent Claim
139 words
A machine for conditioning an ore heat-treating furnace throat comprising: a self-propelled truck; a column; means mounting said column on said selfpropelled truck to be free to swing about a vertical axis; a tubular guide bar articulated to said column to be free to rotate about a horizontal axis; a hollow beam incorporated in said tubular guide bar; an actuating mechanism articulated on said hollow beam and constituting a scraper provided with two side edges and one front edge; a rod hinged on said front edge for movement about a horizontal axis; an air cylinder arranged in the interior of said beam and serving to transverse said actuating mechanism, said cylinder having a movable member and a stationary member; the cylinder movable member being articulated with said beam and the stationary member being articulated with said tubular guide bar.
Claim 3
Dependent Claim
70 words
The machine as claimed in claim 1, in which the stationary member is a piston rod having a piston and the movable member is a cylinder, covers at the opposite ends of the cylinder, a plunger mounted on the piston rod on opposite sides of the piston, and said plungers being provided with grooves having nonreturn valves for supplying compressed air into chambers provided between the plungers and the covers.
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) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |