The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 14, 1978
Filed:
May. 17, 1976
William B Goldsworthy, Palos Verdes Estates, CA (US);
Goldsworthy Engineering, Inc., Torrance, CA (US);
Abstract
Reinforced plastic tapered tubular rod products and the method and apparatus for producing the same. Tapered steel mandrels of desired length and cross-sectional shape are connected in endwise alignment to form a continuously moving mandrel structure. The mandrels each have an enlarged head and a tapered nose at the opposite end thereof so that the nose extends into a recess formed in the enlarged head of the next proceeding mandrel. These mandrels are fed through a multiplicity of winding wheels in which filament containing strands issued from spools on the wheels are helically wound upon the mandrels. The winding wheels are individually programmable so that the geometry of the reinforcement can be varied ply by ply to obtain the desired longitudinal thickness and the desired torsional stiffness in the end product. The mandrels are held in their endwise connected alignment and retained between the winding wheels by an upper feeding mechanism in the form of an upper conveyor and a lower conveyor located respectively above and below the winding wheels. The lower sets of winding wheels are provided with shrink tapes which are wound about the outer surface of the reinforcement fibers applied to the reinforcement bands wound on the mandrels. The mandrels are thereafter separated from each other and in such manner that the reinforced plastic products which are resin impregnated and finally cured can be removed from the mandrels and thereupon used in the final end products.