Pneumatically-operated repetition riveting tool

Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path

Reexamination Certificate

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Details

C072S453190, C029S812500, C029S243530

Reexamination Certificate

active

07140227

ABSTRACT:
A hydro-pneumatically operated repetition riveting tool, which tool includes a gripping means for releasably gripping an elongated mandrel at a position remote from the mandrel head, which gripping means comprises a housing with an internal taper, and a plurality of mandrel-gripping jaws which are urged into contact with the mandrel by means of the internal taper; hydraulic retraction means for retracting the mandrel, thereby to pull the head of the mandrel through a rivet on the mandrel and adjacent the head, thereby to place the rivet; return means for returning the mandrel forwardly again after placing a rivet; and rivet feeding means for feeding rivets forwardly towards the mandrel head; in which the return means is pneumatically powered; and in which the housing of the gripping means comprises a first part and a second part, spring means for urging the first and second parts relatively apart from each other, and limiting means for limiting the movement apart of the first and second parts under the urging of the spring means.

REFERENCES:
patent: 4027520 (1977-06-01), Klein
patent: 4310056 (1982-01-01), Olsson
patent: 4454746 (1984-06-01), Schwab
patent: 4612793 (1986-09-01), Klein
patent: 4648258 (1987-03-01), Frearson
patent: 5390524 (1995-02-01), Higgs
patent: 6637099 (2003-10-01), Seewraj

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