초록 ▼

A cross-section of the mast of this invention exhibits an external portion having roughly the form of a horseshoe, an internal portion arranged within the external portion for reinforcement thereof and having the form of an arc of a circle with the same axis of symmetry and open on the same side as

A cross-section of the mast of this invention exhibits an external portion having roughly the form of a horseshoe, an internal portion arranged within the external portion for reinforcement thereof and having the form of an arc of a circle with the same axis of symmetry and open on the same side as the external portion, the ends of the arc being respectively coupled to the arms of the horseshoe and two closing members fixed to the respective arms and forming two lips which partially close the horseshoe opening but leave therebetween sufficient space to allow passage of a sail retained within the mast. Such arrangement is applicable to masts having an internal sail roller.

대표청구항 ▼

A mast for sail boats having a cross-section which exhibits: an external portion having roughly the form of a horseshoe with rearwardly extending arms defining a horseshoe opening; an internal portion arranged within the external portion for reinforcement thereof and having the form of an arc of a c

A mast for sail boats having a cross-section which exhibits: an external portion having roughly the form of a horseshoe with rearwardly extending arms defining a horseshoe opening; an internal portion arranged within the external portion for reinforcement thereof and having the form of an arc of a circle with the same axis of symmetry and open on the same side as the external portion, the ends of said arc being respectively coupled to the arms of the horseshoe; and two rigid closing members fixed to the respective arms for reinforcement thereof and forming two lips which partially close the horseshoe opening but leave therebetween sufficient space to allow passage of a sail retained within the mast; each of said rigid closing members providing a closed hollow wall portion of substantially triangular cross-section comprising a wall facing toward the interior of the mast, a wall facing toward the exterior of the mast, and a rounded wall forming the base of said triangular cross-section and providing a softened profile at an extremity of a corresponding one of said lips for reducing the risk of damage to a sail when it contacts said corresponding lip; and, said mast comprising a first extrusion forming one of said closing members, a second extrusion forming the other of said closing members, and a third extrusion forming at least one of said external and internal portions.