Manufacturing method for U-bolts

Details Manufacturing method for U-bolts Manufacturing method for U-bolts

1998-09-30

2000-09-05

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Dividing work to form plural articles

264163, 264296, 264257, 264313, 156173, 156193, 411389, 411907, 411908, B29D 100, B32B 110

Patent

active

061138266

ABSTRACT:
A manufacturing method for U-bolts comprising the steps of (a) winding a linear, tape or cloth member made of fiber reinforced plastics in which at least a part of the fiber is oriented in three-dimensional directions around a mandrel having a substantially oval or rectangular section (b) making a pipe molded article by hardening the linear, tape or cloth member wound around the mandrel, (c) cutting the hardened pipe molded article into slices transverse to a longitudinal axis of the mandrel, (d) separating the molded article cut into slices into at least two U-shaped portions, and (e) forming screw portions at tip portions of a pair of separated U-shaped portions.

REFERENCES:
patent: 4209483 (1980-06-01), Batchelar
patent: 4623290 (1986-11-01), Kikuzawa et al.
patent: 5080547 (1992-01-01), Moghe
patent: 5127783 (1992-07-01), Moghe et al.
patent: 5209888 (1993-05-01), Shimada et al.
patent: 5795121 (1998-08-01), Tucker et al.
patent: 5876829 (1999-03-01), Dupont et al.

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