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a technology of elastic exercise and exerciser, which is applied in the direction of muscle exercise devices, resistance force resistors, sport apparatus, etc., can solve the problems of increasing tension with stretching rather than constant throughout the exercise routine, and devices that are uncomfortable for hand grips
Inactive Publication Date: 2007-09-06
CSABAI JULIUS S
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[0007] It is an object of the present invention to provide an elastic exercise device that
Problems solved by technology
Such resilient members are hard to the touch and essentially not compressible when squeezed by hand during the exercises.
This makes such devices uncomfortable for a hand grip, and hence the provision of handles or other features to provide a more hand grippable surface.
Also, such devices are even less comfortable in contact with various parts of the exerciser's body when performing different types of workouts.
Another well recognized drawback of presently known elastic exercise devices is that when they are grasped at their ends, either by means of handles or by wrapping them around the fingers and then pulled by the exerciser, the tension progressively increases with
Method used
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example 1
[0060] A 1 inch (2.5 cm) in diameter expanded neoprene extrusion was produced having the following properties:
[0061] Tensile strength: 146 psi (10.3 kg / cm2)
[0062] Elongation to break: 260%
[0063] Specific weight: 12 lbs / ft3 (Density: 0.19)
[0064] Volumetric expansion / solid ratio: 6.5
[0065] This extrusion was cut at a length of 7 ft (2.10 m) and spliced by its ends to form a loop. The splicing was done by cold vulcanization.
[0066] The obtained loop was extensively used as an exercise device performing a number of workout routines. The exercise device proved to be very satisfactory and durable.
example 2
[0067] A 1¼ inch (3.2 cm) in diameter expanded polyurethane casting was made which was 8 feet (2.4 m) long. The so produced piece had the following properties:
[0068] Tensile strength: 210 psi (14.7 kg / cm2)
[0069] Elongation to break: 370%
[0070] Specific weight: 17 lbs / ft3 (Density: 0.27)
[0071] Volumetric expansion / solid ratio: 4.4
[0072] This cast piece was tested extensively as an exercise device, giving excellent performance for a wide variety of workout routines.
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Abstract
An elastic exercise device is provided, which is made of an expanded elastomer that has the strength and elasticity suitable for performing tension-type exercises. The device preferably consists of a single elongated piece or of an endless loop of desired size and shape. The device can have various cross-sectional profiles, such as a fully filled cylindrical configuration, a tubular configuration, an oval or flat band configuration or a multistrand configuration. The device can be made from elastomer materials such as neoprene or polyethylene by extrusion, casting or injection molding.
Description
FIELD OF THE INVENTION [0001] This invention relates to an elastic exercise device. In particular, it relates to a tension-type exercise device, such as a cord, band, tube or loop, made of an expanded elastomer material. BACKGROUND OF THE INVENTION [0002] Many elastic exercise devices, such as bands, cords, tubes, loops and the like, have been disclosed in the past. Examples of such devices may be seen from U.S. Pat. Nos. 1,663,641; 2,224,103; 3,655,185; 3,807,730; 3,819,177; 3,838,852; 4,019,734; 4,033,580; 4,040,620; 4,059,265; 4,090,706; 4,195,835; 4,121,827; 4,251,071; 4,852,874; 5,614,300; 5,945,060 and 6,287,242. All such exercise devices are made of rubber or similar solid elastomers, and most of them require handles or similar attachments to facilitate their use. [0003] Due to the type of material used, namely a solid elastomer, the resilient member of the device must be thin enough to provide adequate stretchability in order to perform tension-type exercises. Such resilient...
Claims
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