DE8800608U1 - Boom for windsurfers - Google Patents

Description

Wi-Fi

Wind power production GmbH
Friedrich^Ochs-Straße

8480 Weiden

Length-adjustable boom for windsurfing sailors

The innovation or invention relates to a boom system for windsurfing, consisting essentially of two individual parts, which, due to its design, allows for length adjustment and can therefore be adapted to any sail format without the use of a second or different boom.

The innovation or invention essentially consists of the U-shaped main tube (2) bent from a piece of pipe, onto which a head piece (l) made from a PU integral system was applied, which was applied force-fittingly without any interruption of the main tube or riveting and which, due to its material structure - hard surface with high internal flexibility - meets the enormous requirements of a "boom head" in windsurfing and, due to its internal elasticity, adapts better when attached to the surf mast, as well as the grid recesses (4-5) attached to the main tube ends (2) and the U-shaped bent rear-lying insertion tube Figure 2, which can be inserted into the main tube ends (2) and is equipped with a single or multiple spring bolt, Figure 3.

A large number of booms are known and in use which are equipped with a rubber ring or coarse thread lock for their length adjustment, but which loosen and give way under the tough demands of surfing and affect the sail surface tension, causing the sail to "flutter". A large number of boom heads are also known which, due to their material and construction properties, lead to the retaining cheeks (1.1) breaking off or, if they are too strong, to the boom bending. Most of these boom heads are joined to the boom tube using plug and rivet connections, which in turn means a weakening of the material due to the necessary holes for the rivets and often leads to the head breaking in the area of the transition and connection point.

Oil innovation also enables a significant simplification of the production process, since, as previously described, main pipe interruption, rivet holes and riveting are no longer necessary*

This innovation also enables the use of relatively thin-walled aluminum tubes, which leads to a significant reduction in weight and thus has a positive effect on athletic performance.

Summary

The innovation-invention includes a length-adjustable boom construction for windsurfing sailboards , the essential component of which consists of a U-shaped main tube (2) with a cast-on PU head piece (1) and a U-shaped insertion tube (2).

The length is adjusted by means of longitudinal openings or holes \.H-51 in the main tube (i) at the ends and the spring bolts (6) in the insertion tube, which disengage with light thumb pressure and the boom can be easily adjusted in length.

Claims (4)

Protection claims 1. Length-adjustable boom for windsurfing sailboards made of a U-shaped main tube (2) which is connected to a PU- .; integral polymer manufactured head piece (1) for fastening the boom to the surf mast and on the leech side consists of a U-shaped bent insertion ear (3) which serves as a longitudinal adjustment part, characterized in that the head piece (1), which serves to fasten the entire boom to the mast of a windsurfing sailor, consists of ...consists of an integral system developed on a PU basis and, thanks to the given material structure, particularly meets the tough requirements such as a hard surface and a shock-absorbing internal structure. 2. Boom for windsurfing sailors according to claim 1, characterized in that the U-shaped main tube (?) is bent from a piece of pipe and has several openings (4) in the form of round or longitudinal holes arranged at certain distances from one another on the top of the boom main tube and the spring bolts (6) protruding from the U-shaped insertion tube (3) can engage and be pushed into the spring bolts (6) .. . . by means of the thumb and by pushing or pulling movements using the palms of the hands on the U-shaped insertion tube (3) a length change of the boom can be made to suit the respective sail without significant effort. 3. Boom for windsurfing sailors according to claim 1 and 2, characterized in that the insertion tube (3) made of a piece of pipe bent in a U-shape consists of different shank lengths (Figure 2) and can thus be quickly and easily inserted into the boom main tube or replaced with a shorter one, depending on the type and size of the sail. 4. Boom for windsurfing sailors, according to claims 1-3 characterized in that the insertion tube, which is bent into a U-shape from a piece of pipe, has several spring bolts arranged one behind the other at specific intervals, but at least 2, which in cooperation with the hole spacing of the boom main tube enable an optimal boom adjustment to be adjusted to the type of sail used.