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US 4,145,904 AGranted
Bending and helix-forming apparatus
AssigneeSociete Meusienne de Constructions Mechaniques
InventorsMarcel A. Giros, Claude A. Venier
Life of this patent
Estimating the term…
Abstract
The invention relates to a bending or helix-forming apparatus operating by partial but continuous rolling of a long product on a resilient rim portion of a driven rotatable drum, to which portion it is applied by a plurality of rollers having axes parallel to that of the drum, with a pressure sufficient such that its adherence to the said resilient rim portion of the drum ensures that it is positively driven by the latter.
Claims14
Apparatus for bending and imparting a helical shape to an elongate work-piece, comprising:
- a rotatable drum against which the work-piece is urged to bend the workpiece;
- at least a first pressure roller adjacent the drum and urged against the drum with a first predetermined pressure to cause the work-piece, fed between the first pressure roller and the drum, to bend to a first radius of curvature;
- and at least a second pressure roller adjacent the drum and urged against the drum with a second predetermined pressure greater than the first predetermined pressure to bend the previously bend work-piece fed between the second pressure roller and the drum to a radius of curvature different from the first radius of curvature.
Dependencies are inferred from the claim text.