US Patent No: 5,842,705
Number of patents in Portfolio can not be more than 2000
Quick-change jaw assembly
Stats
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Dec 1, 1998
Issued date -
Nov 24, 1997
filing date -
08/976,773
serial no -
Expired
status
Importance
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Abstract
A rotary chuck having a plurality of quick change jaw assemblies each including a master jaw carried by the chuck body and a top jaw releasably secured to the master jaw by a single retaining fastener having a shank including a frustoconical portion. A resilient roll pin carried by the top jaw bears upon and is compressed by the frustoconical portion. The compressed roll pin exerts a resilient biasing force which acts upon the top jaw to continuously urge an arcuate reference surface on the top jaw into coengagement with a complementary reference surface on the master jaw. A hardened locking pin carried by the jaw assembly bears against a frustoconical head on a locking fastener threadably engaged with the master jaw to prevent relaxation of the resilient biasing force provided by the roll pin when the jaws clampingly engage the I.D. of a tubular workpiece.
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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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| 4,982,970 Claw unit with paired separably connected claw elements | 4 | 1988 | |
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| 5,015,003 Top jaw assembly with replaceable work holding pads | 11 | 1990 | |
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| 4,763,906 System for the rapid change of clamping jaws on a machine tool | 10 | 1986 | |
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| 4,668,971 CCD imager with JFET peripherals | 21 | 1985 | |