Vibratory screening apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 16, 2013
Grant Date -
Nov 11, 2010
app pub date -
Jul 24, 2008
filing date -
Jul 24, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention relates to a vibratory screening apparatus which comprises a vibratable screen element (2) mounted in a basket (4), which basket (4) is mounted over a reservoir (6) which contains and holds a pool of liquid slurry (8). A first end (10) of the screen element (2) is disposed within the reservoir (6) such that it is submerged in the body of liquid slurry (8). The reservoir has a deep end (12) in which the first end (10) of the screening element (12) is disposed and a second shallow end (14) above which a median portion (16) of the screening apparatus is disposed. The second end (18) of the screen element (2) is disposed above a portion (20) of the reservoir which extends above the surface of the body of liquid slurry held within the reservoir (6). Vibration means are provided for vibrating the screen element such that oversized solids in the liquid slurry in use of the operation are dewatered on the screen element and are discharged from the second elevated end of the screen element and underside solids pass through the screen element, where they may be collected. A vibratory screening machine is also described.
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 | |
---|---|---|
NATIONAL OILWELL VARCO UK LIMITED | STONEHOUSE GLOUCESTERSHIRE GL10 3RQ |
International Classification(s)

- 2008 Application Filing Year
- B07B Class
- 101 Applications Filed
- 64 Patents Issued To-Date
- 63.37 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Bailey, Marshall G | Aberdeenshire, GB | 14 | 346 |
# of filed Patents : 14 Total Citations : 346 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 6 Citation Count
- B07B Class
- 10.11 % this patent is cited more than
- 12 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 |
Full Text

Legal Events
Date | Code | Event | Description |
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Mar 07, 2012 | FPAY | FEE PAYMENT | year of fee payment: 12 |
Mar 10, 2008 | FPAY | FEE PAYMENT | year of fee payment: 8 |
May 20, 2004 | FPAY | FEE PAYMENT | year of fee payment: 4 |
May 20, 2004 | SULP | SURCHARGE FOR LATE PAYMENT | |
Apr 07, 2004 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Dec 06, 2003 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NELGO MFG. CORPORATION;REEL/FRAME:014852/0749 Owner name: BOSS PRODUCTS, INC., INDIANA Effective Date: Dec 06, 2003 |
Sep 19, 2000 | I | Issuance | |
Sep 01, 2000 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Feb 07, 2000 | AS | ASSIGNMENT | free format text: (ASSIGNMENT OF ASSIGNOR'S INTEREST) RE-RECORD TO CORRECT THE NUMBER OF MICROFILM PAGES FROM 8 TO 2 AT REEL 10631, FRAME 0803.;ASSIGNOR:GONGWER, TROY W.;REEL/FRAME:010661/0442 Owner name: NELGO MANUFACTURING, INDIANA Effective Date: Feb 07, 2000 free format text: ;ASSIGNOR:GONGWER, TROY W.;REEL/FRAME:010631/0803 Owner name: NEIGO MANUFACTURING, INDIANA Effective Date: Feb 07, 2000 |
Aug 31, 1999 | F | Filing | |
Aug 31, 1999 | PD | Priority Date |

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