Ships – Watercraft with means used in providing sailpower – Having specifically defined hull shape
Patent
1982-06-29
1985-07-16
Basinger, Sherman D.
Ships
Watercraft with means used in providing sailpower
Having specifically defined hull shape
B63B 3572
Patent
active
045289247
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a sailboard provided with foot-retaining loops made of flexible and/or elastic material and having ends secured to the board.
A sailboard having foot-retaining loops which serve to prevent a slipping of the surfer from the board particularly at high speeds or in surfriding is known, e.g., from laid-open German Application No. 29 21 372. In order to prevent a catching of the surfer in the foot-retaining loops in case of a fall, the foot-retaining loops of the known sailboard consist of two parts, which are connected by a buckle and may overlap at the joint.
To ensure that the surface can safely leave the sail-board in case of a twisting fall, the foot-retaining loops may be secured to turntables.
Foot-retaining loops consisting of two parts afford a less secure hold to the surfer. Foot-retaining loops which are secured to turntables involve an expensive structure and do not ensure under all circumstances that the foot will be released.
For this reason it is an object of the invention to provide a sailboard with foot-retaining loops which afford a secure hold to the surfer and ensure a release also in case of twisting falls.
In a sailboard provided with foot-retaining loops of the kind described first hereinbefore this object is accomplished according to the invention in that one end is fixedly connected to the sailboard and the other end is connected to the sailboard by a snap fastener which opens in response to tension and/or torsion.
The releasable end may be provided with an eye and a resilient tongue may be provided for resiliently holding the eye against a camlike projection, which extends at least partly through the tongue and has oblique and/or curved run-up surfaces. Such a snap fastener will release the one end of the foot-retaining loop when the same is subjected to tension as a result of a fall or is rotated by a foot which has been caught. In response to tension or torsion or to a combined stress the eye will slide over the camlike projection and will force back the resilient tongue so that the snap fastener will release the one end of the foot-retaining loop in response to an excessively high stress.
Instead of a resilient tongue, a platelike element may be used to hold the eye against the oblique or curved detent projection. A device for varying the initial stress of the resilient element is suitably provided so that the force required to release the foot-retaining loops can be adjusted to the individual requirements of the surfer.
According to another development of the invention, the releasable end of the foot-retaining loop may be provided with a plug-in member, which has a groove or aperture and is adapted to be releasably locked by a resilient element in a bushing, which is anchored in the sailboard, and said resilient element grips the plug-in member between a projection, which extends into the groove or aperture, and the opposite side of said projection. The snap fastener can be opened by tension and by a turning movement under tension. The plug-in member is suitably substantially circular in cross-section and is provided with a detent groove only on one side so that even during a rotation of the detent member the detent groove will be released from the projection which has snapped into said groove.
Advantageous further developments of the invention have been described in the dependent claims.
Illustrative embodiments of the invention will now be explained more in detail with reference to the drawing, in which
FIG. 1 is a fragmentary sectional view showing a sailboard and taken on a plane which extends along one embodiment of a foot-retaining loop, one end of which is secured to the sailboard by a separable snap fastener.
FIG. 2 is a sectional view showing the snap fastener which is provided at one end of a foot-retaining loop and has a variable retaining force.
FIG. 3 is a sectional view showing a third embodiment of a snap fastener which is used with a foot-retaining loop and has a variable retaining force.
FIG. 4 is a sectional view showing a fourth embodime
REFERENCES:
patent: 1009278 (1911-11-01), Bruning
patent: 1372752 (1921-03-01), Holmes
patent: 3235299 (1966-02-01), Kobryner
patent: 3408670 (1968-11-01), Wolfe
patent: 3453013 (1969-07-01), Jeffries
patent: 3571832 (1971-03-01), Rauch
patent: 3802011 (1974-04-01), Castagnola
patent: 4028760 (1977-06-01), Tarlton, Jr.
patent: 4186690 (1980-02-01), Seiler
patent: 4241929 (1980-12-01), Curry
Marker Frank P.
Marker Hannes
Marker Hans C.
Basinger Sherman D.
Hannes Marker
Swinehart Edwin L.
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