Boom of the wishbone-type for sailing boards

US4700647A · kind A · utility

Assignee

• Deutsche Forschungs- und Versuchsanstalt fur Luft- und Raumfahrt e.V. · DE

Inventor

• Arno Pabsch · Braunschweig, DE

Key dates

• Filing date: Mar 14, 1986
• Grant date: Oct 20, 1987
• Expiry date: Mar 14, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T156/1064
• WIPO field: Transport
• WIPO sector: Mechanical engineering

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.