In hunting, the stick can be used as the support for firearm shooting.

In sports, the stick converted to the support can be used as the rest for bow and arrow shooting.

In fishing, the stick converted to the support can be used as the rest for fishing rod.

During walking or recreation activities, the stick converted to the rest can be used for support of telescopes, cameras, knapsacks or books.

According to the International Patent Classification, the invention belongs to the following scope of application: * A45B-005/00-Walking stick or umbrella convertible to a seat; Shooting stick, * AOlM-031/02-Shooting rest for hunters, * AOIK-097/10-Support for fishing rods.

The invention gives solution how to design simple and efficient multipurpose tool with broad scope of application as dynamic support for people in movement and as static support for firearms and accessories.

Background Art At present market there are various types of multipurpose sticks. They are produced in big series, mainly from wood, metal and/or polymer materials and their design is not suitable for broad scope of application. These sticks are similar to standard ski sticks differing in that they consist of two or three telescope pipes.

In literature there are different design of multipurpose rests for support of people, firearms and accessories in movement or in steady state. The largest number of designs refers to sticks with seats, sticks with seats convertible to shooting sticks and sticks with seats. Drawbacks of these designs are caused by design complexity with unbalanced multipurpose applicability. In such complex design, meeting the first requirement jeopardises the second one, and especially the third and next ones.

Patent US4481964 describes combination of walking stick and shooting rest consisting of L-shaped body with edge serrations on the front and back side. An ajustable shooting support includes a rectangular aperture which receives the rod. The support can be moved along the rod in order to adjust height. It is canted to engage the serrations and provide support at the selected location.

In walking, such a stick has inconvenient shape, because serrated edges can stumble against bushes and other plants found in nature. Movable support is also redundant member separable from the stick body.

As shooting rest, such a stick has unstable position because it is fixed into the ground only at one point. For adjustment of the rest height, both arms have to be used and therefore, subject to be supported onto it has to be dropped. Moving of the support along the rod creates noise which can frighten game during hunting. Two serrated rods increase production costs.

Patent US3991780 describes a combined hunting bow stand, walking stick and animal dragging assembly. Three purposes of this stand/stick/dragging assembly resulted in complex and expensive design with unbalanced multipurpose applicability.

Disclosure of the Invention The invention gives solution how to design simple and efficient multi- purpose tool with broad scope of application as dynamic support for people in movement and as static support for firearms and accessories.

Parts converting this multipurpose stick into a stick do not interfere with its technical properties as a rest and vice versa.

The stick has hinged (pivoted) mechanism comprising of four main rods connected to each other which (when folded) make hunting stick and walking stick, and open stick of adjustable height serves as the rest for various firearms, accessories etc. in hunting, sport, fishing and recreation.

Cross-section of the stick is usually a regular geometrical plane. In longitudinal direction, the stick is divided by two planes of symmetry vertical to each other passing through the central axis of the stick. In each quadrant of the stick cross-section there is a main rod with its rectangular sides touching two adjoining adjoining rods. outer planes planes the main rods make exterior rod surface.

The main rods are connected to each other by hinged (pivoted) links in the upper and bottom stick part. In the upper part two adjoining main rods in each half of the rod section have been connected by pivoted links. In the bottom part two adjoining main rods, which are not linked in the upper part, are connected by pivoted links. The stick, comprising of four main rods connected by pivoted links, is converted to a stand by pushing of the pair of rods connected by pivoted links in free direction of pivot axes.

During this operation, each point on each rod performs movement consisting of rotation of the main rod around the upper pivoted link and rotation of the main rod around the bottom pivoted link.

When used as a stick, the main rods are connected to each other by described hinged (pivoted) links and pulling elements at the upper and bottom end. By opening of pulling elements and separation of the main rods we get the rest which, depending on the distance of the bottom hinged links from the ground, is resting on the ground in two, three or four points, and has two forked ends. Adjustment of the rest height (consisting of two forked ends) is made by spreading or pulling of the leg pairs. Securing the location of the main rod in pairs and one leg pairs in relation to the other leg pair is done by flexible connecting member, for instance, a rope or a belt girdled around the main rods under the main rods and pulled through openings on other main rods. On the flexible connecting member there is a sliding retainer by rest height (consisting of two forked ends) is adjusted.

When used as the rest, flexible connecting member can serve as a spare rest lower then the support formed by two forked ends. When used as the stick, flexible connecting member can be used as a belt for strapping of the stick to the arm.

Figure 1 illustrates hunting stick convertible to a shooting rest folded as a hunting stick.

Figure 2 illustrated hunting stick convertible to a shooting rest folded as a shooting support resting on the ground in two points.

Figure 3 illustrates the cross-section A-A of the stick from Figure 1.

Figure 4 illustrates the cross-section B-B of the stick from Figure 1.

Figure 5 illustrates ground-plan C of Figure 2-scheme of the shooting support resting on the ground in two points.

Figure 6 illustrates ground-plan of the shooting support resting on the ground in three points.

Figure 7 illustrates ground-plan of scheme of the shooting support resting on the ground in four points.

In sense of kinematics, hunting stick, which can be converted into a shooting support and vice versa, is hinged (pivoted) mechanism consisting of four main rods-I, II, III and IV connected to each oter by two hinged links with O1 and 02 axes in the upper rod part and two hinged links with 03 and 04 axes in the bottom rod part. When folded, the main rods I, II, III and IV represent a hunting stick and walking stick in open, and when unfolded, they represent a support.

The cross-section of the main rods I, II, III and IV in folded position, represented in Figures 1,3 and 4, can be irregular or regular 2-axis geometrical plane of symmetry such as circle, ellipse, square or polygon and it can be changing or unchanging along its length. During utilisation the stick is under bending load and therefore the most convenient and efficient shape is the stick with changing or unchanging circular cross- section along the stick.

The stick is made of four main rods I, II, III and IV and it is longitudinally divided by two planes of symmetry vertical to each other passing through the central axis of the stick. In each quadrant of the stick cross-section there is a main rod with its rectangular sides touching two adjoining rods.

Free outer planes of the main rods make exterior rod surface. The most convenient cross-section shape of one main rod is rectangular circle sector, and circle for the whole bundle of four rods.

In the upper part, adjoining main rods I and IV are connected to O1 axis by hinged link, and adjoining main rods II and III are connected to 02-axis also by hinged link. O1 and 02 axes are parallel to each other and vertical to the main stick axis. O1 and 02 can lie in the same plane or in different planes vertical to the main stick axis.

In the bottom part, two adjoining main rods (which are not linked in the upper part) are connected to each other. The adjoining main rods I and II are connected to 03 axis by hinged link and adjoining main rods III and IV are connected to 04 axis also by hinged link. 03 and 04 axes are parallel to each other and vertical to the main stick axis. 03 and 04 can also lie in the same plane or in different planes vertical to the main stick axis. O1 and 02 axes of the upper hinged links are vertical to 03 and 04 of the bottom hinged links.

Hinged links can be designed as separable or unseparable similar to links with screws for wood, screws and nuts, bolts with split heads and other links.

In the upper part of the stick, pair of the main rods I and IV connected to O1 axis by hinged link is not connected to the pair of the main rods II and III connected to 02 axis by hinged link. Therefore, these pairs have to be fixed into a bundle by fixing member 1.

In the bottom part of the stick, pair of the main rods I and II connected to 03 axis by hinged link is not connected to the pair of the main rods III and IV connected to 04 axis by hinged link. Therefore, these pairs have to be also fixed into a bundle by the other fixing member 1.

The fixing members 1 can be designed as elastic or non-elastic band or belt with one end fixed to on of the main rods and the other, after being wrapped around the stick, is fastened to belt or band or to one of the main rods. Fixing members 1 can be made as open elastic metal clamps with one end fixed to one of the main rods by which both pairs of not- connected rod pairs are embraced.

The stick, consisting of four main rods I, 11, III and IV which are connected to each other into a bundle by described hinged links and fixing members can be used as support during walking in open. For further improvement, the upper stick end has rounded shape and the bottom end has conical shape. For easier handling, in the upper part of the stick there is flexible connecting member 2 with ends connected to the main rods.

Pulling the hand through flexible connecting member 2 and holding the stick in the area of connecting member 2, helps carrying of the stick and enables leaning on the connecting member 2. The main rods can be made of wood, metal, polymers and their combinations.

The stick, consisting of four main rods I, 11, III and IV connected to each other by hinged links, can be converted to the support by opening of fixing members and spreading of the main rods I, II, III and IV. The main rods I, 11, III and IV are spread by simultaneous pushing of the pairs of the mains rods connected by hinged links in free direction of the hinges-O1, Oz, 03 and 04. During this operation, each point on each rod performs movement consisting of rotation of the main rod around the upper pivoted link and rotation of the main rod around the bottom pivoted link. This double rotation of the main rods results in their movement in space to final location on the support. Final shape of the support is determined by flexible connecting member 2 wrapped around at least on main rod under the hinged links in the upper stick part. Flexible connecting member 2 can be fixed on both end to the main rods as illustrated in Figures 1,2 and 5, or fixed only on one end with other part free (where movable retainer 6 is located). Flexible connecting member 2 is pulled through openings 5 in the main rods around which it is girded. The height of the support (forming two forked ends) and final shape of the support is performed by spreading or pulling of the leg pairs, i. e. by shifting of the movable retainers on the flexible connecting member 2, from the opening 5 or shifting toward the opening 5. The flexible connecting member 2 can be in the form of rope or belt and can serve as a spare support lower than support formed by two forked legs. When used as a stick, the flexible connecting member is used as s belt for hanging on the hand.

The support has shape of a grate (lattice) support resting on the ground by bottom ends 3 and upper ends form two forked legs 4 serving as the rest for objects put on the support. These objects touch interior generatrices of the forked ends 4 and their tips. In some special cases, other parts of the main rods I, II, III and IV can be used for the same purposes.

Distance of the bottom hinged links with 03 and 04 axes from the ground determines number of points in which the support rests on the ground. So we can have the supports resting on the ground in two, three or four points.

If both bottom hinged links are located at the very bottom ends of the main rods or very near to them, as illustrated by the hunting stick shown in Figures 1,2 and 5, the support rests on the ground by two small surfaces and it has the same impact on stability as if it rests in two points. These unstable (in static sense) supports, but very easy for dismantling and mounting, are suitable in hunting for resting of firearms, telescopes, cameras etc. Such a design is appropriate for short leaning of objects on it with support of person in standing, sitting or kneeling position.

If one hinged link is located on the bottom part of one pair of the main rods, and the other one is located at the bigger distance from the lower part of the second pair of the main rods, as illustrated in Figure 6, the support rests on the ground in three points. It is stable design which has not be supported during application. Such a design is suitable for longer leaning of objects for almost all fishing, sport and recreation activities.

The support with the highest static stability, resting on the ground in four points, as illustrated in Figure 7, have both hinged links distant from the bottom ends of both pairs of the main rods. It is suitable for longer supporting of objects used by person in standing or sitting position.

Figures 2,5,6 and 7 show stands having the same length of leg pairs, i. e. bottom legs for resting on the ground, and upper legs have the same length. Changing of lengths of the leg pairs (lengths of upper and bottom legs belonging to the same pair of the main rods) enables different shapes of the stands for inclined ground, as well as the stands with inclined resting lines and surfaces used for putting various objects. Each of these constructions can be made based on specific conditions and apllication requirements.