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Publication numberUS20050187075 A1
Publication typeApplication
Application numberUS 10/513,486
PCT numberPCT/GB2003/001854
Publication dateAug 25, 2005
Filing dateMay 1, 2003
Priority dateMay 3, 2002
Also published asDE60319814D1, EP1501611A1, EP1501611B1, WO2003092823A1
Publication number10513486, 513486, PCT/2003/1854, PCT/GB/2003/001854, PCT/GB/2003/01854, PCT/GB/3/001854, PCT/GB/3/01854, PCT/GB2003/001854, PCT/GB2003/01854, PCT/GB2003001854, PCT/GB200301854, PCT/GB3/001854, PCT/GB3/01854, PCT/GB3001854, PCT/GB301854, US 2005/0187075 A1, US 2005/187075 A1, US 20050187075 A1, US 20050187075A1, US 2005187075 A1, US 2005187075A1, US-A1-20050187075, US-A1-2005187075, US2005/0187075A1, US2005/187075A1, US20050187075 A1, US20050187075A1, US2005187075 A1, US2005187075A1
InventorsMark Bellamy
Original AssigneeBellamy Mark J.B.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Physical training equipment
US 20050187075 A1
Abstract
A weight is disclosed for use in performing physical training exercises. The weight comprising an elongate cylindrical flexible-walled bag filled with a flowable solid and having at least axially spaced two handles projecting from the cylindrical surface of the bag. The packing density of the flowable solid within the bag is such that the maximum sag at the center of the bag when it is supported by its ends does not exceed 5% of the length of the bag.
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Claims(11)
1-10. (canceled)
11. A weight for use in performing physical training exercises, comprising an elongate cylindrical flexible-walled bendable bag filled with a flowable solid and having at least two handles that are flexibly attached to the bag and project from the cylindrical surface of the bag at points that are axially spaced from one another, characterised in that the packing density of the flowable solid within the bag is such that the maximum sag at the centre of the bag when it is supported by its ends does not exceed 5% of the length of the bag:
12. A weight as claimed in claim 11, wherein the flowable solid is sand.
13. A weight as claimed in claim 11, wherein the flowable solid comprises rounded particles having a diameter in the range from 1 mm to 5 mm.
14. A weight as claimed in claim 11, wherein the bag is padded.
15. A weight as claimed in claim 11, having two handles that extend either parallel to the axis of the bag.
16. A weight as claimed in claim 11, having two handles that extend circumferentially.
17. A weight as claimed in claim 16, wherein the handles form part of a continuous web that passes round the entire circumference of the bag.
18. A weight as claimed in claim 11, wherein the bag has an outer skin and a separate inner skin.
19. A weight as claimed in claim 18, wherein the outer skin is formed of a plastics material.
20. A weight as claimed in claim 11, wherein the bag is formed with a resealable opening to enable the bag to be emptied and refilled with the flowable solid.
Description
  • [0001]
    The present invention relates to equipment for use in performing physical training exercises.
  • [0002]
    It is known to exercise by lifting weights usually constructed as barbells or dumbbells consisting of metal disks secured to a metal bar. The present invention seeks to provide a weight for use in performing physical exercises that is a both safer and more versatile than conventional weights.
  • [0003]
    According to the present invention, there is provided a weight for use in performing physical training exercises, comprising an elongate cylindrical flexible-walled bendable bag filled with a flowable solid and having at least two handles that are flexibly attached to the bag and project from the cylindrical surface of the bag at points that are axially spaced from one another, wherein the packing density of the flowable solid within the bag is such that the maximum sag at the centre of the bag when it is supported by its ends does not exceed 5% of the length of the bag.
  • [0004]
    The flowable solid is made of incompressible particles, and in this respect, the bag differs from punch bags, such as described in U.S. Pat. No. 6,261,210, which are filled with a compressible material such as rubber. The flowable solid is preferably sand but may alternatively use pea gravel which comprises rounded particles having a maximum diameter of around 5 mm. The flowable solid may comprise less coarse material with a particle size as small as 1 mm but very fine materials would prove difficult to contain effectively within the bag.
  • [0005]
    The bag is preferably also padded. The thickness of the padding is preferably such as to permit the surface of the bag to be depressed by 5 to 25 mm. The padding softens impact with the bag and allows the bag to be carried comfortably across the shoulders of the user.
  • [0006]
    When exercising with conventional barbells or dumbbells, exercises are designed to work on one or only a few muscles through movements in only one plane. If a bag of the invention is used in the same way as conventional dumbbells, the instability resulting from the bendable nature of the bag and the movement in the handles requires the athlete to use many more different muscles to control the movement of the bag.
  • [0007]
    The bag of the invention can additionally be used to perform many exercises that are not safe or comfortable with dumbbells. For example, the bag can be carried across the shoulders while performing such exercises as jumping, running, climbing up and down stairs, bending forwards, bending sideways and rotating about the hip.
  • [0008]
    The padding of the bag also permits it to be thrown and caught safely in the same way as a medicine ball.
  • [0009]
    The handles of the bag may extend either parallel to its axis or circumferentially. In the latter case, it is preferred that the handles form part of a continuous web that passes round the entire circumference of the bag to provide additional strength and place less reliance on the stitching of the handles to the material of the bag.
  • [0010]
    Preferably, the bag is of several skins. The inner skin is conveniently a polypropylene fabric as commonly used for sacks used to package and store heavy building materials such as sand and gravel. Such a fabric is inexpensive and well suited to the task of containing the flowable solid. The outer skin may suitably be formed of a plastics material or of leather. Between the two skins, a compressible layer may be used to provide the desired padding. The compressible layer may be a felt or a closed cell foam.
  • [0011]
    To permit the bag to be filled with the flowable solid, it is preferred to provide the outer skin with an opening having a resealable fastener, such as a zip fastener, a lace fastener or a hook and eye fastener (VelcroŽ).
  • [0012]
    The opening may extend parallel to the axis of the bag or circumferentially. As a further alternative, the bag may be formed with a removable end cap that is held in position by means of a suitable resealable fastener.
  • [0013]
    The invention will now be described further, by way of example, with reference to the accompanying drawings, in which:
  • [0014]
    FIG. 1 is a perspective view of a first bag, embodying the invention,
  • [0015]
    FIG. 2 is a perspective view of an alternative embodiment of the invention, and
  • [0016]
    FIG. 3 is a transverse section through the bag of a still further embodiment of the invention.
  • [0017]
    The exercise bag 10 shown in FIG. 1 has an outer casing 12 made of a suitable plastics material or leather onto which are sewn two handles 14. The casing has an opening 16 closed by a resealable fastener, such as a zip or VelcroŽ, through which the bag is filled with a flowable solid, preferably sand or pea gravel. As will be described in further detail by reference to FIG. 3, the bag 10 may have an inner-casing or bladder for increased strength and better containment of the flowable solid.
  • [0018]
    The bag 20 of FIG. 2 has an outer casing 22 and differs from the bag of FIG. 1 in two respects. First, the handles 24 extend axially rather than circumferentially and second, in place of an opening, the bag 20 has a removable end cap 28 attached to the body of the bag by a resealable fastener.
  • [0019]
    The size of an exercise bag will of course depend on the desired weight and the diameter of the bag can be increased as necessary to accommodate greater quantities of the flowable solid. The length of the bag should preferably be greater than 600 cm in order to afford sufficient space for two handles and less than 1200 cm to avoid it becoming unwieldy.
  • [0020]
    The packing density of the pea gravel or sand is important because the bag should be slightly bendable but should not sag in the middle under the weight of the contained flowable solid. The maximum sag at the centre of the bag when it is supported by its ends should not exceed 5% of the length of the bag. Thus it should be possible to raise one end of the bag when lying on a horizontal surface by a distance equal only to about one tenth of the length of the bag before its opposite end commences to tilt. The bag is thus able to bend sufficiently to rest on a user's shoulders without applying pressure directly to the spine.
  • [0021]
    The flexibility of the bag and the fact that the handles can flex relative to the bag have the effect that its centre of gravity will move around as it is lifted and will call upon the user to use a larger range of muscles to control the movement.
  • [0022]
    FIG. 3 shows a section through an alternative embodiment of the invention. The bag 30 of FIG. 3 has an outer casing 32 made of a suitable plastics material, such as high density of polythene. The outer casing is lined with a padding 36 which is preferably a resilient closed-cell foam. The bag 30 has an inner skin 40 and is made of a woven polypropylene fabric, such as used in the building trade to carry sand. The inner skin 40 is filled with sand 42 of which the particle size is about 1 mm. It is possible to use finer material in addition but if the particle size is too small it may bleed out of the bag. The use of particles larger than 5 mm, on the other hand, would make the bag uncomfortable to carry across the shoulders.
  • [0023]
    In the embodiments of FIGS. 1 and 2, the handles 14 and 2 are sewn to the outer casing, which is not preferred because the stitching will be subjected to severe stresses and may give way. Instead, in FIG. 3, the gripped part of the handle 34 (which is itself suitably upholstered) passes through slits in the outer casing 32 and the padding 36 and is attached to a web 38 that encircles the entire girth of the bag 30. For additional strength, it is possible to sew the handle 34 to the casing. Though FIG. 3 shows the web 38 inside in the outer casing 32, it is further possible to place the web 38 outside the outer casing 32, this being the construction that offers the maximum strength.
  • [0024]
    The outer casing can be formed by folding over and sewing or welding the opposite sides of a flat sheet or it may be formed from a seamless extruded plastics tube. The opening 16 in FIG. 1 is better suited to the former method of construction of the casing, while the end cap 28 of FIG. 2 is better suited to an extruded tube and makes for an inexpensive construction in that it can totally avoid the need for sewing.
  • [0025]
    The padding of the casing makes the bag more comfortable to carry and reduces the risk of injury by impact, which is ever present when using barbells or dumbbells. The padding may be between 5 mm and 25 mm thickness to permit a similar degree of flexibility in the surface of the bag. Thus the padding is sufficient to prevent the individual particles of the flowable solid from being discerned.
  • [0026]
    The ideal separation of the handles of the bag will depend on the size of the user and the exercise being performed. To enable the bag to be used in different ways and by different users, it is possible to provide more than two handles and these may either be axially aligned with another or they may be staggered around the circumference of the bag.
  • [0027]
    An elongate padded and slightly flexible bag as described above has been found to provide a significant advantage over dumbbells and other devices used in the prior art for resistance training in that it allows exercise regimes to be designed to improve the performance of all the muscles that are used by a particular athlete rather than just a few of the relevant muscles. The exercises can be tailored to the sport in which the athlete specialises and can involve a wide range of body movements as earlier described.
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7758477Jun 8, 2006Jul 20, 2010Jerry PrenattExercise device
US8038585 *Sep 17, 2009Oct 18, 2011Brown Jr Gordon LFlexible elongated handheld exercise bars
US8231511Aug 24, 2007Jul 31, 2012Vipr LlcExerciser
US8771152Dec 5, 2011Jul 8, 2014Frank B. SilvermanFitness bag and methods of use
US9186565 *Jul 22, 2011Nov 17, 2015Doug EnglishPhysical training apparatus
US9387356 *Jul 6, 2012Jul 12, 2016Jorge JaidarMulti-exercise device
US9498669 *Nov 14, 2011Nov 22, 2016Cyril BrizardResistance exercise trainer having portable hand-held weights
US9526941 *Mar 12, 2015Dec 27, 2016Azuni International Co., Ltd.Barbell
US9550088 *May 1, 2015Jan 24, 2017Boonplook CoompolExercise roller
US20070287600 *Jun 8, 2006Dec 13, 2007Jerry PrenattExercise device
US20100009820 *Aug 24, 2007Jan 14, 2010Vipr LlcExerciser
US20120058863 *Nov 14, 2011Mar 8, 2012Cyril BrizardResistance exercise trainer having portable hand-held weights
US20120088639 *Oct 19, 2011Apr 12, 2012Michol Nasha DalcourtExerciser
US20120149536 *Oct 1, 2011Jun 14, 2012Crystal Lee TrimbleHeavy duty fitness equipment bag
US20130023388 *Jul 22, 2011Jan 24, 2013Doug EnglishPhysical training apparatus
US20140011643 *Jul 6, 2012Jan 9, 2014Jorge JaidarMulti-exercise device
US20150165258 *Dec 12, 2014Jun 18, 2015Escape Fitness LimitedAnnular Weighted Exercise Apparatus
US20150343256 *May 1, 2015Dec 3, 2015Boonplook CoompolExercise roller
USD792531 *Dec 23, 2014Jul 18, 2017Todd BossierExercise strong bag
WO2008025138A1 *Aug 24, 2007Mar 6, 2008Michol Nasha DalcourtExerciser
Classifications
U.S. Classification482/93
International ClassificationA63B21/065, A63B21/02, A63B21/072, A63B69/00, A63B21/00, A63B21/06
Cooperative ClassificationA63B21/0004, A63B21/065, A63B21/0603, A63B69/0028, A63B21/028, A63B21/0609, A63B21/06, A63B21/072
European ClassificationA63B21/06C, A63B21/06A2, A63B21/00D, A63B21/06
Legal Events
DateCodeEventDescription
Dec 2, 2004ASAssignment
Owner name: PERFORMANCE TECHNOLOGY LIMITED, UNITED KINGDOM
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BELLAMY, MARK JAMES BRIAN;REEL/FRAME:015408/0124
Effective date: 20041101