Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1995-06-07
1998-08-04
Watson, Robert C.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29235, B23P 1904
Patent
active
057875618
ABSTRACT:
The pulling tool has a pulling head for gripping an insert, such as an ene valve seat or a pre-combustion chamber, and for pulling it out of a recess. A gripping mechanism for an annular insert, such as a valve seat, may grip the insert by its inner edges. Such a gripping mechanism includes a shaft that slides freely through a bore in the body in a direction parallel to the body. At the end of the shaft is a cone, which cooperates with at least two toothed claws. The toothed claws may be pivotally mounted on a lower extension of the body or may be integrally formed with one another as a collet and flex radially outwardly. The body may have a lever that, when depressed, lifts the shaft, pulling up on the cone, causing the claws to move outward, and causing teeth to penetrate the metal of the insert on its inner diameter to lock into the insert. A gripping mechanism for an insert having a central or eccentric opening, such as a pre-combustion chamber, may have a pivoting claw arm with a tooth on one end. The end of the arm with the tooth is inserted into the opening of the insert at an oblique angle. A set screw forces the claw arm to pivot, which causes the tooth to penetrate the metal of the insert from behind. A pneumatic puller may be used with either gripping mechanism to remove the gripped insert from the recess.
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Snap-On 1991-1992 Caralog, pp. 252-256.
Professional Tool & Equipment News, Nov. 1993, p. 66.
Applicant Sales Brochure, Published Oct. 22, 1993.
Harmand Family Limited Partnership A California Limited Partners
Watson Robert C.
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