US Patent No: 7,026,574
Number of patents in Portfolio can not be more than 2000
Wire gripper for a drive unit of a wire feeder
Stats
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Apr 11, 2006
Issued date -
Jul 22, 2003
filing date -
10/623,963
serial no -
In Force
status
Importance
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Abstract
A gripping device for a set of pinch rollers used in a wire feeder that supplies a welding operation with a consumable welding wire. The welding wire passes between the pinch rollers whereby the pinch rollers engage the wire with a gripping force and incrementally rotate to control the outflow of the wire to the welding operation. The gripping device has a first member which is displaceable relative to a second member and a spring mechanism extending between the first and second members which has at least a first and a second spring modulus. The spring mechanism produces the gripping force as the first and the second members are displaced toward one another. The gripper urges one roller of the set of pinch rollers toward the other roller of the set to engage the wire and to apply the gripping force. By including a spring with a first and second spring modulus, the gripper can apply a first range of gripping forces with the force produced by the first spring modulus and a second range of gripping forces with the force produced by the second spring modulus.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,277,314 Retainer ring for welding wire container disclosure | 53 | 1993 | |
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| 5,816,466 Wire feeding apparatus | 41 | 1996 | |
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| 5,836,539 Inlet guide mechanism for wire feeder | 13 | 1997 | |
| 5,981,906 Method of welding the ends of pipe together using dual welding wires | 20 | 1997 | |
| 5,819,934 Wire transport drum | 43 | 1997 | |
| 5,973,291 Method and system for determining the feedability of welding wire | 14 | 1998 | |
| 6,267,291 Coded and electronically tagged welding wire | 21 | 1999 | |
| 6,557,742 Drive roller for wire feeding mechanism | 16 | 2001 | |
| 6,596,972 Welding accessory arrangement | 34 | 2001 | |
| 6,596,970 Method of determining cable impedance | 6 | 2002 | |
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| 4,869,367 Welding wire container | 52 | 1985 | |
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| 4,235,362 Wire-feeding apparatus | 16 | 1979 | |
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| 5,109,983 Package for an optical fiber jumper | 32 | 1991 | |
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| 5,053,598 Wire electrode feeding apparatus | 6 | 1990 | |
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| 5,775,619 Roller for winding and unwinding a protective cover equipping a machine tool or the like | 6 | 1996 | |
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| 5,309,603 Device and process to compress and guide a fiber sliver | 5 | 1992 | |
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| 4,277,011 Quick adjusting elongated object guide | 10 | 1979 | |
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| 4,268,248 Portable preheater | 10 | 1979 | |
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| 4,426,046 Wire drive system | 8 | 1981 | |
| 4,623,063 Fibreboard container for coil material | 39 | 1986 | |
| 5,090,647 Hose trolley | 9 | 1991 | |
| 5,410,126 Portable AC/DC wire feed welder | 25 | 1994 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 11, 2013 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 11, 2017 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| 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 |