Metal working – Means to assemble or disassemble – Overedge assembling means
Reexamination Certificate
2007-09-04
2007-09-04
Jones, David B (Department: 3725)
Metal working
Means to assemble or disassemble
Overedge assembling means
C029S243523, C072S391400
Reexamination Certificate
active
11146588
ABSTRACT:
A pulling head includes a sleeve which threadably engages a sleeve adapter. A collet is threadably engaged with a drawbar adapter, and the collet and drawbar adapter are disposed and slidable in the sleeve. A set of jaws is disposed in the collet, and a jaw follower is disposed in the collet and contacts the jaws. A spring retainer is disposed in the collet, and engages two springs. Specifically, a first spring is disposed between the drawbar adapter and the spring retainer, and a second spring is disposed between the spring retainer and the jaw follower. The first spring has a higher rating than does the second spring. While the first spring is configured to accommodate inertia loading, the second spring is configured to urge the jaws closed yet be relatively easily overcome by the insertion of mandrels of different diameters.
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Jones David B
SPS Technologies, LLC
Trexler, Bushnell Giangiorgi, Blackstone & Marr, Ltd.
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