Ships – Watercraft with means used in providing sailpower – Having specifically defined hull shape
Patent
1982-04-12
1984-06-05
Blix, Trygve M.
Ships
Watercraft with means used in providing sailpower
Having specifically defined hull shape
114 97, B63B 908
Patent
active
044521618
DESCRIPTION:
BRIEF SUMMARY
This invention relates to apparatus and a method of using the apparatus applicable to a sport now known as board sailing.
The concept of board sailing is now very well known involving a single sail with a hull on which the sail through a supporting mast is adjustably supported and the rider controls the craft by standing on the hull and holding the sail by means of a control rail which is secured to the mast and the sail and extends around these.
The problem to which this invention is related is a difficulty associated with holding the sail in a required position over a period of time.
It is common to have a rope attached with respect to the control rail and a hook secured by means of a harness to the rider so that when the rope is engaged in the hook, a significant amount of the tension can be transferred from the arms to the hook.
The difficulty is that in the event that the rider wishes to release the rope from engaging within the hook, he must first release the tension and thereby relocate the rope from around the tongue of the hook to effect the release.
In emergency situations, it has been discovered that it can be most difficult to provide this first release of tension to ensure disengagement and indeed in an emergency situation, it is very difficult for the rider to provide this necessary manoeuvre to provide such freeing of the interlocking position of the rope with respect to the hook.
While a number of these manoeuvres can be explained it will be appreciated that in the event of an unexpected gust of wind hitting the sail, this may force the sail over unbalancing and pulling the rider over who then can be pulled down into the sail, thus effectively losing his balance and generally unable to provide further release of tension until with balance gone he falls into the sail.
This of course can be a difficult if not dangerous situation and illustrates a typical problem to which this invention is directed.
A further problem relates to a difficulty that when a rider is engaged in a racing competition, there is some difficulty in having to disengage the rope from the block very quickly, and it is conventional that prior to intending to go about, the hook must be disengaged thereby anticipating such a manoeuvre.
In a manoeuvre such as "cover tacking" this can be effective warning to the competitor that the rider does intend to go about and significant competitive advantage can be thereby lost.
The invention in one form can then be said to reside in an arrangement providing for support assistance of a board sailer sail by a rider where this includes a hook secured to the rider, and a rope having ends secured in spaced apart relationship to a control rail providing a loop engaging with the hook, the arrangement being characterised in that a hook member of the hook can be released to a non-hooking position to release the loop by effecting a selected relative movement of the hook with respect to the rope loop.
It has been discovered that where as it is very difficult in any emergency situation to release the tension necessary to have the rope lifted away while under this tension from engagement with the hook, it is extremely common in any difficult situation for there to be relative movement of the rope with respect to the hook for instance sliding the rope through the hook and according to this invention there is therefore proposed means which effect release of the hooking relationship of the rope with the hook upon this occurring.
The invention can reside in a hook so adapted to effect a release when such relative motion occurs or it can reside in the combination of a rope shaped so as to effect a triggering of a hook with a hook so adapted to effect this release with such circumstances occurring.
While this broader concept can be achieved in many differing ways, there are particular advantages in providing for a specific arrangement.
The invention then could be said to reside in a hook adapted to be secured to the body of a board sailer rider and including a base, and a hook member secured to the base in
REFERENCES:
patent: 4112865 (1978-09-01), Carn
Avila Stephen P.
Blix Trygve M.
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