External pipe welding apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Oct 11, 2005
Issued Date -
N/A
app pub date -
Sep 29, 2003
filing date -
Oct 10, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to the field of automated welding, and more particularly, to an automated, gas metal arc welding apparatus for externally welding abutting sections of pipe. The apparatus has a motorized main carriage for travelling circumferentially about one of the pipe sections to be welded. The apparatus is provided with a welding torch which is connected to the main carriage. The welding torch is movable relative to the main carriage by the actuation of a multi-axis drive mechanism. The multi-axis drive mechanism has a horizontal transport mechanism for linearly translating the torch transversely of the weld seam, a vertical transport mechanism for vertically displacing the torch transversely of the weld seam and an angular transport mechanism for pivotally moving the torch transversely of the weld seam. A controller is provided for actuating the various transport mechanisms individually or simultaneously if desired.
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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O J PIPELINES CANADA | 1409-4TH STREET NISKU ALBERTA T9E 7M9 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Craig, John | Edmonton, CA | 14 | 138 |
# of filed Patents : 14 Total Citations : 138 | |||
Flynn, Tim | Edmonton, CA | 5 | 110 |
# of filed Patents : 5 Total Citations : 110 | |||
Marhofer, William E | Edmonton, CA | 3 | 110 |
# of filed Patents : 3 Total Citations : 110 | |||
Sanford, Shell | Jacksonville, TX | 3 | 110 |
# of filed Patents : 3 Total Citations : 110 |
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Patent Citation Ranking
- 9 Citation Count
- B23K Class
- 4.86 % this patent is cited more than
- 20 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 |
---|---|---|---|
Jun 30, 2008 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jun 01, 2008 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jun 01, 2008 |
Jun 01, 2008 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Dec 10, 2007 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Jun 01, 2004 | I | Issuance | |
Jan 24, 2002 | P | Published | |
May 01, 2001 | F | Filing | |
Mar 29, 2001 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KUNZ, RAINER;KULLIK, GOTZ;ENGEL, DIETER;AND OTHERS;REEL/FRAME:011769/0206 Owner name: DRAGER MEDIZINTECHNIK GMBH, GERMANY Effective Date: Mar 29, 2001 |
Jul 19, 2000 | PD | Priority Date |

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