Fatigue enhancement of material surrounding openings in...

Details Fatigue enhancement of material surrounding openings in... Fatigue enhancement of material surrounding openings in...

2006-04-11

2006-04-11

Larson, Lowell A. (Department: 3725)

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

C072S370070

Reexamination Certificate

active

07024908

ABSTRACT:
An elongated first tubular member has a mandrel receiving center passageway and a slotted outer end portion that comprises first axial fingers separated by first axial slots. An elongated second tubular member surrounds the first tubular member and has a slotted outer end portion that comprises second axial fingers separated by second axial slots. An elongated third tubular member surrounds the second tubular member and has a slotted outer end portion comprising third axial fingers separated by third axial slots. An elongated mandrel is positioned inside the center passageway. The first tubular member is extendable and retractable longitudinally of the second and third tubular members. A tubular sleeve is provided that has an inner end and a flange projecting radially outwardly from the sleeve at the inner end. The mandrel is extendable axially through the center passageway of the first tubular member and axially through the tubular sleeve when the radial flange is clamped by and between the first and second fingers.

REFERENCES:
patent: 4583388 (1986-04-01), Hogenhout
patent: 4597282 (1986-07-01), Hogenhout
patent: 4665732 (1987-05-01), Hogenhout
patent: 4885829 (1989-12-01), Landy
patent: 4989442 (1991-02-01), Rosier
patent: 5127254 (1992-07-01), Copple et al.
patent: 5305627 (1994-04-01), Quincey et al.
patent: 5943898 (1999-08-01), Kuo

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