Boom of the wishbone-type for sailing boards

Details Boom of the wishbone-type for sailing boards Boom of the wishbone-type for sailing boards

1986-03-14

1987-10-20

Peters, Jr., Joseph F.

Ships

Watercraft with means used in providing sailpower

Having specifically defined hull shape

114 89, 156257, B63H 910

Patent

active

047006471

ABSTRACT:
Boom of the wishbone-type for sailing boards, where the spars (4,6) at le have a core (12) made from a rigid foam, which has essentially plane surfaces on the inside and outside of the spars, which extend across a significant section of the length of the core. On the plane surfaces there are arranged synthetic-resin-strengthened UD-slivers (22), which extend in the longitudinal direction of the spars across the length thereof, and there is provided an outer layer (24) from a synthetic-resin-strengthened fibre fabric or braiding with slivers intersecting at an angle of between 30.degree. and 60.degree. to the longitudinal extension of the spars. The UD-slivers (22) are preferably arranged between the inner and the outer fabric layer (20,24) in the form of previously cured CFK-UD-strips.

REFERENCES:
patent: 3522122 (1970-07-01), Ganahl
patent: 3567541 (1971-03-01), Kaczerginski
patent: 3592884 (1971-07-01), Williams
patent: 3972529 (1976-08-01), McNeil
patent: 4070021 (1978-01-01), Gecka et al.
patent: 4200479 (1980-04-01), Ardell et al.
patent: 4312162 (1982-01-01), Medney
patent: 4334488 (1982-06-01), Joliuet

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