NL2001820C2 - Plastic saucer-shaped disk, has multiple ridges arranged on circumference of repeating pattern, plate-shaped base with central opening, and vertical flange arranged along circumferential direction of peripheral edge of plate-shaped base - Google Patents

Abstract

The Frisbee(RTM: plastic saucer-shaped disk) (1) has multiple ridges (4) arranged on the circumference of a repeating pattern. The repeating pattern includes an undulating profile, and a plate-shaped base (2) comprises a central opening (6), and is designed in disk form or in funnel form. Local orientations of outer surfaces of the plate-shaped base are coincided with each other. A vertical flange (12) is arranged along circumferential direction of a peripheral edge of the plate-shaped base, and is extended across a sheet-shaped structure.

Description

P85414NL00

Title: Frisbee and use as a frisbee

The invention relates to a frisbee.

Various types of frisbees are known from the literature. When throwing a frisbee, the frisbee is brought into a spinning motion, the object turning about a central axis and being thrown into the air by the user. Due to the swirling movement, the frisbee has a certain stabilizing capacity, so that a somewhat balanced flight can be performed.

The invention has for its object to obtain a frisbee which has a greater stable capacity. To that end, the frisbee comprises a substantially plate-shaped structure, the orientation of an outer surface of which comprises a repeating pattern in the circumferential direction.

Surprisingly, due to the appearance of air boredom, the pattern that is repeated in the circumferential direction results in a particularly stable behavior.

The repetitive pattern preferably comprises radially extending ridges, so that a desired swirl in the air flow is created during the flight, while moreover a rigid, relatively light construction is possible.

Advantageously, the substantially plate-shaped structure can comprise a central opening. When the radially extending ridges 20 extend to the central opening, an air flow is possible through the central opening directly to the valleys located between the ridges. When the frisbee falls, the central opening acts as a venturi so that an underpressure is created just above the central opening. An increased flow of the frisbee is obtained by an air flow from the central opening to the valleys on the outer surface. The floating power also increases as a result.

2

The invention furthermore relates to the use of a frisbee of a substantially plate-shaped structure, the orientation of an outer surface of which comprises a repeating pattern in the circumferential direction.

Further advantageous embodiments of the invention are shown in the subclaims.

The invention will be further elucidated on the basis of exemplary embodiments shown in the drawing. In the drawing:

Figure 1 shows a schematic perspective top view of a first embodiment of a frisbee according to the invention;

Figure 2 is a schematic bottom perspective view of the frisbee of Figs. 1;

Figure 3 is a schematic side view of the frisbee of Figure 1;

Figure 4 is a schematic view of a cross-section of the frisbee of Figs. 1;

Figure 5 is a schematic perspective top view of a second embodiment of a frisbee according to the invention;

Figure 6 shows a schematic bottom perspective view of the frisbee of Figs. 5; and Figure 7 shows a schematic view of a cross-section of the frisbee of Figs. 5.

The figures are only schematic representations of the invention and are only given by way of non-limiting exemplary embodiments.

Figures 1 and 2 respectively show a schematic perspective top view and a schematic perspective bottom view of a first embodiment of a frisbee 1 according to the invention.

The frisbee 1 comprises a substantially plate-shaped structure 2. The structure 2 has an outer surface facing upwards 3. The orientation Ri, Ra 30 of the outer surface 3 comprises a pattern 3 repeating in circumferential direction C. The repeating pattern thus has a wavy profile and the pattern comprises radially extending ridges 4. The ridges 4 and the valleys 5 situated therebetween thus form the wavy profile. The wavy profile approximates a sinusoidal course. The undulating profile can be implemented steeper or flatter than shown in Figure 1.

Due to the wavy profile, the orientation R1, R2 of the outer surface 3 varies in the circumferential direction C. The repeating pattern can comprise a different type of profile, such as a saw-toothed profile, instead of a wavy profile. Furthermore, the height of the radially extending ridges 4 can vary and / or the ridges 4 can be interrupted. The ridges 4 can also be offset locally in circumferential direction C.

The substantially plate-shaped structure 2 is substantially funnel-shaped and comprises a central opening 6. Figure 3 shows a schematic side view of the frisbee 1. Furthermore, Figure 4 shows a schematic view of a cross-section of the frisbee 1 along a line through the center of the opening 6. In this context, it is noted that the frisbee 1 can in principle also be designed without a central opening 6.

As shown in Figures 1-4, the substantially plate-shaped structure is disc-shaped. The peripheral edge 7 is circular. Instead of a circular peripheral edge 7, another type of peripheral edge 7 can also be used, for example with an ellipse shape. A substantially flat structure can also be formed instead of a funnel-shaped structure.

The plate-shaped structure 2 further has a downwardly directed outer surface 8 which is situated opposite the upwardly directed outer surface 3. The orientations of the opposite outer surfaces 3, 8 substantially coincide. In another embodiment according to the invention, the downwardly facing outer surface 8 is designed differently, for example flat.

4

The frisbee 1 further comprises a tube 9, one end 10 of which connects to the edge 11 of the central opening 8 in the substantially plate-shaped structure 2. The tube 9 is optional and can therefore be omitted.

Furthermore, the frisbee 1 has an upright flange 12 which is provided in the circumferential direction G on the circumferential edge 7 of the substantially plate-shaped structure 2. The upright flange 12 is also optional. Furthermore, the upright flange 12 can extend in both directions Di, Dg transversely of the substantially plate-shaped structure 2.

Figures 5 and 6 respectively show a schematic perspective top view and a schematic perspective bottom view of a second embodiment of a frisbee 1 according to the invention. Here, the flange 12 extends in both transverse directions D 1, D g. The upper edge of the flange 12 here approximately coincides with the top of the ridges 4. Figure 7 shows a schematic view of a cross-section of the frisbee 1 from Figure 5.

The frisbee 1 thus described appears to be easy to handle in practice. Moreover, the frisbee has a remarkably stable flight.

The invention is not limited to the exemplary embodiment described here. Many variants are possible.

In this way the frisbee can be provided with various prints and colors. Furthermore, the frisbee is preferably made of plastic, so that a relatively light yet rigid construction is obtained.

Such variants will be clear to those skilled in the art and are understood to be within the scope of the invention as set forth in the following claims.

Claims (11)

A Frisbee, comprising a substantially plate-shaped structure, the orientation of an outer surface of which comprises a pattern repeating in the circumferential direction, Frisbee according to claim 1, wherein the repeating pattern 5 comprises radially extending ridges. Frisbee according to claim 1 or 2, wherein the repeating pattern has a wavy profile. Frisbee according to any one of the preceding claims, wherein the substantially plate-shaped structure comprises a central opening. Frisbee according to any one of the preceding claims, wherein the substantially plate-shaped structure is disc-shaped, Frisbee according to any one of the preceding claims, wherein the substantially plate-shaped structure is substantially funnel-shaped. 7. Frisbee according to any one of the preceding claims, wherein the local orientations of the opposite outer surfaces of the substantially plate-shaped structure substantially coincide. A frisbee according to any one of the preceding claims, wherein the peripheral edge of the substantially plate-shaped structure is provided with an upright flange in the peripheral direction. A frisbee according to any one of the preceding claims, wherein the raised flange extends in both directions transversely of the substantially plate-shaped structure. 10. Frisbee as claimed in any of the foregoing claims, further comprising a tube whose ends connect to the edge of the central opening 25 in the substantially plate-shaped structure. 11. Use as frisbee of a substantially plate-shaped structure, the orientation of an outer surface of which comprises a repeat pattern in the circumferential direction.