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Reinforced plastic tapered rod products and the method and apparatus for producing same
| Details |
Inventors: Goldsworthy, William B.;
Assignee: Goldsworthy Engineering, Inc. (Torrance, CA)
Primary Examiner: Simmons; David A.
Assistant Examiner:
Attorney, Agent or Firm: Romney, Schaap, Golant, Scillieri, Disner & Ashen
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. |
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DETAILED DESCRIPTION Referring now in more detail and by reference characters to the drawings which illustrate a preferred embodiment of the present invention.
A designates a filament winding apparatus capable of producing tapered reinforced plastic products and which is more fully illustrated in schematic form.
In this case, the reinforced plastic tubular products are those products which include a continuously tapered side wall from an upper end to a lower end thereof, and which are capable of being used in a wide variety of applications.
For example, the reinforced tubular plastic products produced in accordance with the present invention may be used in the formation of golf clubs, fishing rods, ski poles and the like.
In other commercial applications, reinforced plastic members which are tapered in their length can be used as flag poles, telephone poles and in various other forms of commercial and industrial applications.
Generally, any form of tubular member which previously has been formed of metal or similar materials may be made of reinforced plastic materials in accordance with the present invention.
Referring again to FIG.
1, it can be observed that the apparatus of the present invention includes a plurality of upstanding support beams 16 which are arranged in somewhat of a circular pattern on a mounting frame 18 which is retained by a base frame 19.
The support beams 16 are designed to retain a plurality of vertically spaced apart, successively located winding stages 22 as hereinafter described in more detail.
The support beams 16 may be retained in any suitable housing and secured to the base frame or similar structure for their upright support by any conventional means.
Generally, the entire apparatus A is enclosed in a housing, but which is not shown herein in order to more fully illustrate and describe the present invention.
Each of the successive winding stages 22 are each comprised of a generally circular disc 24 (or so-called "winding wheel") which carries on its upper surface a plurality of filament reinforcing material spools 26
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Nonmetallic Processes 
