Adjustable roller screen
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 25, 2000
Grant Date -
N/A
app pub date -
Feb 25, 1999
filing date -
Feb 25, 1999
priority date (Note) -
Expired
status (Latency Note)
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Importance

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Abstract
A roller screen is provided with an assembly for adjusting the spacing between the rolls simultaneously. The assembly includes an elongated bar is provided adjacent one end of the rolls and has a plurality of wedges slidably mounted thereon. Bearing support plates slidably mounted in a frame have v-shape wedge portions slidably engaging adjacent side surfaces of the wedges on said bar. In a preferred embodiment a plurality of computer assisted hydraulic cams selectively move the bar upwardly and downwardly to adjust engagement of the wedges and the spacing between the rolls. Preferably a spacing adjustment assembly is provided at both of the opposite ends of the rolls in the roller screen.
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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USX CORPORATION | 600 GRANT STREET PITTSBURGH PA 15219-2749 |
International Classification(s)

- 1999 Application Filing Year
- B07B Class
- 91 Applications Filed
- 53 Patents Issued To-Date
- 58.25 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Lavoie, Jean-Guy | Montreal, CA | 1 | 9 |
# of filed Patents : 1 Total Citations : 9 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 9 Citation Count
- B07B Class
- 1.59 % this patent is cited more than
- 25 Age
Forward Cite Landscape
- No Forward Cites to Display

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 |
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