US Patent No: 6,241,261
Number of patents in Portfolio can not be more than 2000
Chuck
Stats
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Jun 5, 2001
Issued date -
Oct 20, 1999
filing date -
09/421,485
serial no -
In Force
status
Importance
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Abstract
In a chuck (1) with moveable base jaws (11) inserted in radial grooves (3) in a chuck body (2) with each base jaw (11) having a releasable top jaw (21) attached to it, a joining piece (12) protruding towards the top jaw (21) is formed onto each base jaw (11) and engages in an accommodation opening (22) in the top jaw (21). Furthermore, the top jaws (21) can be clamped onto the base jaws by means of quick clamping devices (31) arranged in the top jaws (21) and the joining pieces (12). This embodiment means that the top jaws (21) of the chuck (1) can be replaced very quickly and in a simple operation, whilst a secure attachment of the top jaws (21) onto the base jaws (11) is guaranteed at all times.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,667,971 Fast change top jaw system | 13 | 1985 | |
| 5,330,205 Power chuck with quick change top jaw | 6 | 1993 | |
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| 4,667,972 Chuck master jaw and false jaw construction | 9 | 1984 | |
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| 5,174,589 Clamping device | 5 | 1991 | |
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| 4,200,300 Lathe chuck with removable jaws | 10 | 1978 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 5, 2012 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| 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 |