DE8130078U1 - "FORK TREE OR SPREADING SPOON FOR WINDSURFBOARDS" - Google Patents

Description

Mistral Windsurfing AG Grindeistr. 11, CH-8303 Bassersdorf Boom or spreader gaff for windsurfing boards DESCRIPTION

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The innovation concerns a boom or spreader gaff for windsurfing boards with two outwardly curved trees and with a bow fitting that can be attached to the mast and a stern fitting for holding the clew, one between the two as a handle used trees, the trees are connected by bow and stern fittings.

Such booms for windsurfing boards are well known. However, one is in the more recent development of windsurfing switched to using sails of different shapes for different boards and different wind conditions. The usual booms have a fixed length, with the distance between the bow fitting and the rear fitting about the same size corresponds to a regatta sail of 6.5 square meters. These booms are usually too long for diving boards. In strong winds and for

or High Clew-Segul In recent times so-called Maui sails have been used as diving boards, which have a much smaller distance between the fore leech and the clew. The same is true for Storm sails too. Especially with diving boards and gliders for whom such sails are used, it happens that on half wind courses the rear end of the boom is in the water grinds. So far it has therefore been necessary to use at least two different booms for the different types of sails, namely a long one for regatta sails and a short one for Maui and To use storm sails.

The innovation is based on the task of mechanically to create a robust boom, which is the case with all

Sail cuts is usable.
5

According to the innovation, this task is in a boom Above type 1m essentially solved in that the trees from telescopically extendable and. can be shortened Pipes exist, with a device for fixleren the set length being provided on each of the trees 1st that the rear fitting with two rear tree sections Is firmly connected, the outside diameter of which is roughly the same as the inside diameter of the bow fitting connected front tree sections corresponds to that the rear tree sections in the front tree sections are slidably received, and that the devices for fixing from displaceable on the rear tree sections and fixable clamping parts exist.

This has the advantage that you can each can convert the boom into a long or short boom after the sail has been set, whereby in mechanically simple and robust way of fixing the

each set length is ensured. 25th

In an advantageous embodiment according to the innovation, the clamping parts consist of eccentric buckles collapsible shells. The eccentric buckles are, for example, buckles, as they are known from ski boots.

In this context it is beneficial to use the trays to be provided with an inner rubber coating so that the clamping is frictionally on the rear tree branch

cuts done. The shells are preferably made of a plastic »whereby the buckles are also made of Plastic can exist.

The shells can be connected to the front tree sections be, but an advantageous Ausihrungsform is to design these as independent components, which can be moved on the rear tree sections. Due to the pressure in the sail, the front tree sections pressed against the plastic shells. In this embodiment it is advantageous to have one on the front tree sections resting on the shells Provide seal which prevents the penetration of water into this.

Beyorzugt the front tree sections are od with an elastic rubber upper. The like. Provided to the Increase grip.

In order to prevent the pipes that make up the trees from run full of water, the tree sections are before -2Q foamed up to the front, with the front sections of the tree Of course, the area in which the rear tree sections are pushed in is left free.

It is also preferred to provide a seal between the front and rear tree sections, which for example can consist of an O-ring.

A preferred adjustment range is 30 to 40 cm. In the following, the innovation is based on an in the

Drawings exemplarily illustrated embodiment explained in more detail.
It shows;

Fig. 1 is a plan view of the rear area of a Boom according to the innovation; and

FIG. 2 is a schematic sectional view of part of FIG

Fig. 1.

In Fig. 1, the rear area of a boom 1 is illustrated according to the innovation, the front area with bow fitting was omitted and is known per se. In the rear area, the boom 1 is behind the innovation adjustable in length.

The boom 1 consists of two outwardly curved Trees 2, 3, which at the front with the bow fitting (not shown) and at the rear with a rear fitting 10 with one another are connected. The rear fitting 10 consists of normal catfish from a plastic part and contains two Bores 26, 27 through which a trim sheet (not shown) is passed, welch.e the clew of the sail (not shown) and can be fixed in two document clamps 28, 29.

Trees 2 and 3 consist of pipes 4, 5 and 6 and 7, which can be telescoped into one another. The position made in each case is here through one Device 8 or 9 can be fixed.

The tubes 6 and 7 are firmly connected to the rear fitting 10 and form the rear tree sections 11 and 12, which can be pushed into the front tree sections 13, 14. For this purpose, the outside diameter corresponds of tubes 6 and 7 essentially correspond to the inside diameter of tubes 4 and 5.

The devices 8 and 9 for fixing the set Length exist in the illustrated embodiment each of a shell 18, preferably made of plastic, which has a slot 20 in the axial direction having. The slot 20 is, as shown in Fig. 1, overlapped by an eccentric buckle 21, as it is for example from plastic ski boots is known. The eccentric buckle is used in the currently set

Length the shell 18 on the rear tree sections 11, 12 held firmly in place. To this end have the shells 18 on the inside, which in their shape corresponds to the cross-section of the rear tree sections 11, 12 corresponds to a rubber coating 22, which serves to increase the friction coefficient.

When you close the eccentric buckles 21 is under elastic deformation of the rubber coating 22 while reducing the slot 20, the shell 18 is compressed.

The shell 18 can be firmly connected to the rear ends 15, 16 of the front tree sections 13, 14.

In a preferred embodiment according to the innovation, however, the shells 18 are provided as separate components, and preferably have a hinge or the like on the side opposite the slot 20, for example when training from plastic acts as a hinge weak point, so that the The shells 18 can be removed radially from the tree sections 11, 12.

In this embodiment, one of the shells is attached to the desired one to adjust the length of the boom Place on the rear tree sections 11, fixed by closing eccentric buckles 21, whereby then by the pull exerted on the trees by the tensioned sail (not shown) the rear ends 15,

16 of the front tree sections 13, 14 firmly against the Front edges of the shells 18 are pressed.

In order to prevent that in the front tree sections 13, 14 water can penetrate, is preferably on the shells 18 on the front edge, on which the rear ends 15, the front tree sections 13, 14 come to rest,

a seal 25 is provided which prevents the ingress of water at this connection point.

In preferred embodiments, the rear 5

Tree sections 11, 12 with a plastic foam completely filled (not shown in the drawings), while the front tree sections 13, 14 from the foremost position occupied by the front end 24 of the rear tree sections 11, 12 inside the tubes 4, 5 can, are also foamed.

In order to be able to take into account all sail cuts, the displacement path of the tubes 6, 7 in the tubes 4, 5 be about 30 to 40 cm.

standing
Above / an exemplary embodiment of

Innovation described, whereby changes and modifications will be obvious to the person skilled in the art, without departing from the reason thoughts of the invention deviate. Such changes can in particular affect the design of the device 8 and 9 and relate to the seal.

All of the features and advantages of the Innovation, including construction details and spatial arrangements can be essential for the innovation both individually and in any combination.

Claims (8)

q] E ^ iBROSE "" "BROSEsa- D-8023 Munich-Pullach. Wiener Sir. 2; TeL * (p89) 7 83 30 71 * Tejex $ 2ft1p7 bjos <£ Cables: -Palentibus · Munich Mistral Windsurfing AG Grindelstr. 11 , CH-8303 Bassersdorf Your reference: MS 33 Day: October 14th Yourref: Date: OBr / Ki SCHUTZANPROCHE 1. Wiring harness or spreader gaff for windsurf boards with two outside, crooked trees and with one on a mast attachable to the bow fitting and a stern fitting Holding the sheet space of a sail stretched between the two trees serving as a handle, whereby the Trees are connected to one another by bow and stern fittings, characterized in that the trees (2, 3) consist of tubes (4, 5, 6, 7) which can be extended and shortened telescopically, with each the trees (2, 3) a device (8, 9) for fixing the set length is provided that the rear fitting (10) with two rear tree sections (11, 12) is firmly connected, the outer diameter of which is about the The inner diameter of the front tree sections (13, 14) firmly connected to the bow fitting corresponds to that of the rear Tree sections (11,12) 1n the front tree sections are slidably received, and that the device (8, 9) for fixing from the rear tree sections (11, 12) displaceable and fixable clamping parts (18) exist. 2. boom according to claim 1, characterized in that the clamping parts (18) by means of eccentric buckles (21) Compatible shells (18) exist. 3. boom according to claim 1 or 2, characterized in that the clamping parts (18) on the inside have a rubber coating (22). 4. boom according to one of the preceding claims »characterized in that the shells (12, deß from a Made of plastic. 5. boom according to one of the preceding claims, characterized characterized in that the clamping parts on the Vorder'Bauraabschnitte (13, 14) facing front 15 edge have a seal (25). 6. fork tree according to one of the preceding claims, characterized characterized in that the front tree sections (13, 14) have an upper cable (23) made of rubber or the like exhibit, 7. boom according to one of the preceding claims, characterized in that the rear tree sections (11, 12) are filled with plastic foam. 8. Boom according to one of the preceding claims, characterized in that the front region of the
The front tree sections (13, 14) are filled with plastic foam, the front 3 area beginning at the point where the front ends (24) of the rear tree sections (11, 12) inside the front tree sections (13 , 14) cherish.