Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Clamp structure constitutes sole initial metal-deforming...
Patent
1991-05-28
1992-08-04
Larson, Lowell A.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
Clamp structure constitutes sole initial metal-deforming...
72316, 72312, B21D 1100
Patent
active
051348721
ABSTRACT:
A hydraulic chuck device for enlarging the end of a tube, which includes a chuck body having first and second inlets for a source of fluid under pressure. The device has a tube receiving end where the tube to be enlarged is inserted. Also included is a piston mounted in the body which is adapted to move toward the tube receiving end upon introduction of fluid under pressure to the first inlet and away from the tube receiving end upon introduction of fluid under pressure to the second inlet. The piston has a tube engaging sizing ball on one end for enlarging a tube inserted into the tube receiving end of the body when the piston moves toward that end. Also provided are collets mounted in the body at the receiving end to engage the tube and prevent movement thereof with respect to the body. The collets are cooperatively attached to the piston to engage and release the tube as the piston moves toward and away from the tube receiving end.
REFERENCES:
patent: 2438999 (1948-04-01), Hartley et al.
patent: 2465677 (1949-03-01), Deverall
patent: 2654414 (1953-10-01), Tomarin
patent: 2998125 (1961-08-01), Hahn et al.
patent: 3021546 (1962-02-01), Yowell et al.
patent: 3143989 (1964-08-01), Hermanns
patent: 3505846 (1970-04-01), Smida
patent: 3568303 (1971-03-01), Ito et al.
patent: 3820375 (1974-06-01), Koski
Air-Mo Hydraulics Inc.
Larson Lowell A.
McKeon Michael J.
Munday John S.
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