Charging device for a shaft furnace
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Feb 28, 2012
Grant Date -
Jan 6, 2011
app pub date -
Dec 8, 2006
filing date -
Jan 20, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A charging device for a shaft furnace, which includes at least one charging hopper having a discharge orifice arranged in a position off-centre with respect to the central axis of the shaft furnace, and a material distribution device arranged below this hopper. The material distribution device includes a feed channel coaxial with the central axis of the furnace and a rotatable, pivotable chute, which is arranged below the feed channel for distributing a charge in the shaft furnace. The charging device also includes a connecting box in the shape of a funnel, arranged between the material distribution device and the charging hopper. The connecting box possesses a lower central outlet communicating with the charging hopper and at least one upper inlet which is arranged off-centre with respect to the central axis of the furnace and communicates with the discharge orifice of the hopper. According to the invention, the charging device includes at least one spreader situated upstream of the distribution device, on the trajectory of the material discharged from the discharge orifice. The spreader enables a flow of material to be dispersed to both sides of the feed channel.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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PAUL WURTH S A | 32 RUE D'ALSACE LUXEMBOURG 1122 |
International Classification(s)

- 2006 Application Filing Year
- B65G Class
- 715 Applications Filed
- 424 Patents Issued To-Date
- 59.31 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Cimenti, Giovanni | Bertrange, LU | 24 | 111 |
# of filed Patents : 24 Total Citations : 111 | |||
Lonardi, Emile | Bascharage, LU | 128 | 1043 |
# of filed Patents : 128 Total Citations : 1043 |
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Patent Citation Ranking
- 0 Citation Count
- B65G Class
- 0 % this patent is cited more than
- 13 Age
Forward Cite Landscape
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
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Dec 21, 2022 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 12 |
Dec 20, 2018 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8 |
Dec 17, 2014 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Jul 05, 2011 | I | Issuance | |
Jun 15, 2011 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Dec 23, 2010 | P | Published | |
Nov 02, 2010 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Aug 26, 2010 | F | Filing | |
May 14, 2004 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WHITBY-STREVENS, COLIN;HAUCK, JERROLD VON;REEL/FRAME:025369/0953 Owner name: APPLE COMPUTER INC., CALIFORNIA Effective Date: May 14, 2004 |
Nov 18, 2003 | PD | Priority Date |

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