Patent ID: 7263753

Claim:
A pulling head engageable with an installation tool and configured to pull on a mandrel, said pulling head comprising a body which is engageable with the installation tool, wherein the body comprises a sleeve, a first spring which is disposed in the body, a second spring which is disposed in the body, a collet, and a drawbar adapter, wherein said collet is threadably engaged with the drawbar adapter, and the collet and drawbar adapter are disposed and slidable in the sleeve, wherein said first spring is configured to provide that the pulling head accommodates inertia loading, and said second spring is configured to provide that the pulling head is useable in association with a range of mandrel diameters, wherein the first spring is rated higher than the second spring, further comprising a spring retainer which is desposed in the collet, and engages the first spring and second spring, and a jaw follower which is disposed in the collet and which contactably engages the jaws, wherein the first spring is disposed between the drawbar adapter and the spring retainer, and the second spring is disposed between the spring retainer and the jaw follower, wherein said spring retainer bottoms against a shoulder of the collet such that the load from the first spring is not transmitted to the jaw follower, wherein a spring force of said first spring need not be overcome to install a mandrel in the pulling head.