Composite tubular rod and method for making same

Details Composite tubular rod and method for making same Composite tubular rod and method for making same

1981-08-13

1982-10-19

Kendell, Lorraine T.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

43 4498, 156173, 156184, 156189, 156192, A01K 8700, A01K 9100, B32B 900

Patent

active

043550614

ABSTRACT:
The present invention is directed to a hollow, flexible rod (20) having a body portion (21), a tip portion (23) and a transition portion (24) between the body and tip portions. A plurality of reinforcing strands (30) of a first material extend longitudinally within the body portion (21) and into the transition portion (24). A plurality of reinforcing strands (31) of a second material extend within the tip portion (23) and into the transition portion (24). The reinforcing strands of the first and second materials overlap one or more integer multiples (N) along the circumference of the rod. The present invention is also directed to the method whereby independent prepreg sheets (26,28) formed of the first and second reinforcing strands (31,30) are cut to a tapered apex (33 or 34) and overlapped to a predetermined, interrelated extent longitudinally (T) and laterally (S). So overlapped, the prepreg sheets (26,28) are simultaneously wound onto a mandrel (29) and cured to produce the aforesaid rod (20).

REFERENCES:
patent: 3956564 (1976-05-01), Hillig
patent: 4023801 (1977-05-01), Van Auken
patent: 4043074 (1977-08-01), Airhart
patent: 4061806 (1977-12-01), Lindler et al.
patent: 4097626 (1978-06-01), Tennent
patent: 4133708 (1979-01-01), Tokuno
patent: 4135035 (1979-01-01), Branen
patent: 4157181 (1979-06-01), Cecka
patent: 4178713 (1979-12-01), Higuchi et al.

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