Spring structure intended specifically for play or exercise appa

Details Spring structure intended specifically for play or exercise appa Spring structure intended specifically for play or exercise appa

1985-09-03

1987-09-15

Hafer, Robert A.

Undertaking

272135, 272 54, A63G 1700

Patent

active

046934677

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates to a spring structure intended specifically for play or exercise apparatus.
2. Description of Background Art
It is well known, even usual, to use various springs in play apparatus, for example in order to produce rocking movements. Also in exercise apparatus, springs of different resilience are used for conditioning exercises. However, it can be noted as a general feature that different spring structures have been created for each different apparatus, in which case, owing to the small production series, the structures are usually rather expensive.


SUMMARY AND OBJECTS OF THE INVENTION

The object of the present invention is therefore to provide a spring structure which, on the one hand, is very simple and inexpensive to manufacture and, on the other hand, can be used for numerous applications, both for play apparatus and for exercise apparatus and park benches. In order to provide such a versatile spring structure the invention is characterized in that which is presented in the accompanying independent claim. Certain preferred embodiments are defined in the dependent claims.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.


BRIEF DESCRIPTION OF THE DRAWINGS

The invention is described below in greater detail in the form of examples and with reference to the accompanying drawings, in which each diagram depicts a perspective view of one application of the spring structure.
FIG. 1 is a perspective view of the spring structure used together with a toy;
FIG. 2 is a perspective view of the spring structure attached to a ceiling with an exercise bar fastened thereto; and
FIG. 3 is a perspective view of the spring structure affixed to a seesaw.
Referring now to the diagrams, the essential part of the spring structure consists of a helical spring 1 made from flat steel; it may have a somewhat oval overall shape, as shown in the figures. The thickness and the width of the spring are, of course, according to the intended use. The spring may comprise, for example, about 1.5 turns or 2 turns made in such a way that the ends of the spring are along approximately parallel planes.
At the inner end 1a of the spring 1 there is attached a brace 2 which is U-shaped in the middle and which may also be of similar flat steel. The brace 2 is somewhat wider than the width of the spring 1, so that its arms extend freely to both sides of the spring 1. Likewise, the U-shaped part of the brace 2 is deeper than the radial dimension of the spring, so that the brace can support the spring freely. The ends of the brace are bent outwards, preferably along the same plane, in which case the brace can be easily and sturdily secured to a base, for example by means of bolts.
The figures show different practical applications of the spring structure. FIG. 1 shows a sketch of a rocking horse 4, the lower part of which is fastened to the outer end 1b of the spring 1. Sturdiness is increased by the lower part of the horse having a shape corresponding to that of the end 1b of the spring. The ends of the brace 2 are fastened to two runners 3, which can be further fastened to the floor, if necessary.
FIG. 2 depicts an exercise bar 5, which is fastened to the free end of the spring 1. The brace 2 is preferably fastened to the ceiling by means of bolts. It is clear that this structure can also be fastened to the floor, for example, for pulling exercises.
FIG. 3 shows a seesaw 6, which is fastened to the end 16 of the spring 1. The brace 2 is fastened to a base, for example the floor or the ground.
It is clear that numerous further applications are poss

REFERENCES:
patent: 1287 (1862-03-01), Crandall
patent: 64432 (1867-05-01), Limerick
patent: 143930 (1873-10-01), Reinhart
patent: 150825 (1874-05-01), Caldwell
patent: 1624986 (1927-04-01), Sherrod
patent: 1729214 (1929-09-01), Gordon
patent: 1771920 (1930-07-01), Gordon
patent: 2173300 (1939-09-01), Heldman
patent: 2718398 (1955-09-01), Barkschat
patent: 2769484 (1956-11-01), Kairath

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