US4729549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Handling device for a distribution spout of a shaft furnace
Assignee: Paul Wurth SA
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Filing: 1986-05-14
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Granted: 1988-03-08
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Expires: 2006-05-14
Abstract
Abstract A handling device for the distribution spout of a shaft furnace is presented. The handling device comprises a front axle and a rear axle with each axle being mounted on movable rollers. The axles are positioned on two rails which are opposite an access aperture in the head of the furnace. The rails are suspended underneath a working platform positioned around the furnace head with a tilting frame mounted on the front axle. A supporting cradle for the spout is freely suspended at the front end of the frame and subjected to the action of a counterweight and a supporting cable. The rear end of the frame is articulated to the front ends of two arms mounted on the rear axle. Finally, a jack is pivotably mounted between the ends of levers, the levers being affixed to the rear axle and to the rear end of the frame respectively. As a result, the two articulation points between the jack and each of the two levers, together with the articulations between the frame and the two arms of the rear axle form a triangular configuration. This triangular configuration is deformable under the action of the jack whereby the frame is caused to tilt about the axis of its supporting axle.
Inventors
- 👤 Emile Lonardi
- 👤 Carlo Spedener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:40
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/18; C21B7/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
307 words
A handling device for the distribution spout of a shaft furnace including rails being suspended underneath a working platform which is positioned around the shaft furnace, the handling device comprising: a front axle and a rear axle, each of said axles being mounted on roller means adapted for movement on rails suspended underneath a working platform positioned about the shaft furnace; tilting frame means mounted on said front axle, said frame means having a front end and a rear end; supporting cradle means for the distribution spout being suspended at the front end of said frame means and being associated with a counterweight and a supporting cable; a pair of arm members, said arm members having front ends and rear ends, said rear end of said frame means being articulated to said front ends of said arm members, said arm members being mounted on said rear axle; first lever means having a first end and a second end, and second lever means having a first and a second end; jack means having a rod received in a cylinder, said first end of said first lever means being pivotably connected to said rod and said first end of said second lever means being pivotably connected to said cylinder; said second end of said first lever means being fixed to said rear axle and said second end of said second lever means being fixed to said rear end of said frame means thereby forming a pair of first articulation points between said jack means and each of said first and second lever means, said first articulation points and said articulation between said frame means and said two arm members defining a triangular configuration, said triangular configuration being deformable under the action of said jack means for causing said frame means to tilt about the axis of said front axle.
Claim 2
Dependent Claim
307 words
A handling device for the distribution spout of a shaft furnace including rails being suspended underneath a working platform which is positioned around the shaft furnace, the handling device comprising: a front axle and a rear axle, each of said axles being mounted on roller means adapted for movement on rails suspended underneath a working platform positioned about the shaft furnace; tilting frame means mounted on said front axle, said frame means having a front end and a rear end; supporting cradle means for the distribution spout being suspended at the front end of said frame means and being associated with a counterweight and a supporting cable; a pair of arm members, said arm members having front ends and rear ends, said rear end of said frame means being articulated to said front ends of said arm members, said arm members being mounted on said rear axle; first lever means having a first end and a second end, and second lever means having a first and a second end; jack means having a rod received in a cylinder, said first end of said first lever means being pivotably connected to said rod and said first end of said second lever means being pivotably connected to said cylinder; said second end of said first lever means being fixed to said rear axle and said second end of said second lever means being fixed to said rear end of said frame means thereby forming a pair of first articulation points between said jack means and each of said first and second lever means, said first articulation points and said articulation between said frame means and said two arm members defining a triangular configuration, said triangular configuration being deformable under the action of said jack means for causing said frame means to tilt about the axis of said front axle.
Claim 3
Dependent Claim
20 words
The device of claim 1 wherein: each of said axles is comprised of a shaft rotatably mounted on supporting rollers.
Claim 4
Dependent Claim
45 words
The device of claim 1 wherein: said frame means comprises two parallel arms having a central area which is integral with said front axle, said parallel arms having rear ends interconnected by a shaft bearing on said second lever wherein said jack means is mounted.
Claim 5
Dependent Claim
46 words
The device of claim 2 wherein: said frame means comprises two parallel arms having a central area which is integral with said front axle, said parallel arms having rear ends interconnected by a shaft bearing on said second lever means wherein said jack means is mounted.
Claim 6
Dependent Claim
63 words
The device of claim 1 wherein said cradle means is suspended on said frame means by a suspension shaft and wherein: said supporting cable of said cradle means is connected to a winch which is mounted on said frame means, said winch being actuated by motor means whereby said cradle means pivots about said suspension shaft at the end of said frame means.
Claim 7
Dependent Claim
63 words
The device of claim 2 wherein said cradle means is suspended on said frame means by a suspension shaft and wherein: said supporting cable of said cradle means is connected to a winch which is mounted on said frame means, said winch being actuated by motor means whereby said cradle means pivots about said suspension shaft at the end of said frame means.
Claim 8
Dependent Claim
63 words
The device of claim 3 wherein said cradle means is suspended on said frame means by a suspension shaft and wherein: said supporting cable of said cradle means is connected to a winch which is mounted on said frame means, said winch bieng actuated by motor means whereby said cradle means pivots about said suspension shaft at the end of said frame means.
Claim 9
Dependent Claim
63 words
The device of claim 2 wherein said cradle means is suspended on said frame means by a suspension shaft and wherein: said supporting cable of said cradle means is connected to a winch which is mounted on said frame means, said winch being actuated by motor means whereby said cradle means pivots about said suspension shaft at the end of said frame means.
References Cited (Backward Citations)
US4525120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |