US20100304940A1 - Dumbbell - Google Patents
Dumbbell Download PDFInfo
- Publication number
- US20100304940A1 US20100304940A1 US12/744,975 US74497508A US2010304940A1 US 20100304940 A1 US20100304940 A1 US 20100304940A1 US 74497508 A US74497508 A US 74497508A US 2010304940 A1 US2010304940 A1 US 2010304940A1
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- United States
- Prior art keywords
- weight
- dumbbell
- disk
- disks
- base assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims 2
- 230000005484 gravity Effects 0.000 description 6
- 230000004308 accommodation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/072—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle
- A63B21/075—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle with variable weights, e.g. weight systems with weight selecting means for bar-bells or dumb-bells
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/072—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle
- A63B21/0728—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle with means for fixing weights on bars, i.e. fixing olympic discs or bumper plates on bar-bells or dumb-bells
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/00058—Mechanical means for varying the resistance
- A63B21/00065—Mechanical means for varying the resistance by increasing or reducing the number of resistance units
Abstract
A dumbbell with a selectable number of weight disks includes a handle with pins projectable in opposing directions, a base assembly for accommodating two sets of weight disks standing on edge and provided with openings. The projection lengths of the pins are stepwise selectable in order to permit selection of the number of weight disks supported on the handle. Neighbouring weight disks have mutually engaging connecting arrangements which axially interconnect the weight disks but which permit radial separation. The weight disks are planar with a circular, unbroken peripheral edge and with the openings located centrally. All connecting arrangements have a longitudinal centre line which coincides with a diameter line for the weight disks and with the permitted radial displacement direction between two neighbouring weight disks.
Description
- The present invention relates to a dumbbell with weight disks, where the number of weight disks on the dumbbell is selectable, and the weight disks may be accommodated standing upright in two sets in a base assembly, the weight disks having through-going openings which are located along a straight line with the weight disks standing in the base assembly, and the weight disks have mutually cooperating connecting means which are disposed, in an axial direction of the dumbbell, to interconnect neighbouring weight disks, but in a radial direction to permit separation of one weight disk from a neighbouring weight disk.
- U.S. Pat. No. 6,416,466 shows, in FIGS. 4, 5, 7 and 9 a dumbbell with a number of weight plates standing upright in a base assembly. The weight plates display a highly irregular configuration and have a radial groove into the centre. Between the weight plates, there is disposed in the base assembly a handle, from which rods are extendable in opposing, axial directions.
- The design and construction according to this United States Patent Specification is complex and entails that the position of the point of gravity for a combined dumbbell would probably be a considerable distance outside a longitudinal centre axis to the dumbbell. In addition, the radial grooves in the weight plates entail problems of a mechanical strength nature.
- Further, the dumbbell according to this US Patent Specification has a U-shaped handle with a bottom which further entails that the point of gravity of the dumbbell is offset in the radial direction and which moreover may involve a hazard to the wrist of the user of the dumbbell if the dumbbell were to rotate in the hand holding it.
- It is desirable to improve the dumbbell described by way of introduction in such a manner that the drawbacks inherent in the prior art dumbbells are obviated. In particular, it is desirable to design the weight disks included in the dumbbell such that they are satisfactory from the point of view of mechanical strength, that they will have their points of gravity more or less centred and that the dumbbell in its entirety will also be rotationally symmetrical, at least as regards the position of its point of gravity.
- According to an aspect of the present invention, the dumbbell intimated by way of introduction is characterised in that the weight disks are in the form of substantially planar disks with a substantially circular unbroken peripheral edge and with the openings located centrally, that all connecting means have a longitudinal centre line which coincides with a diameter line for the weight disk, and that the permitted, radial displacement between two neighbouring weight disks substantially coincides with the centre line.
- The present invention will now be described in greater detail hereinbelow, with reference to the accompanying Drawings. In the accompanying Drawings:
-
FIG. 1 is a perspective view of a base assembly in which is placed a handle included in a dumbbell and a set of weight disks which stand upright in the base assembly; -
FIG. 2 shows the handle ofFIG. 1 , seen obliquely from beneath together with weight disks disposed on the handle; -
FIG. 3 shows the base assembly ofFIG. 1 in the partly cut-away state and without handle and weight disks; -
FIG. 4 shows in the partly cut-away state the base assembly ofFIG. 1 with a handle disposed therein and a set of weight disks; -
FIG. 5 shows two different perspective views of a weight disk; -
FIG. 6 shows a weight disk according toFIG. 5 in the partly cut-away state; -
FIG. 7 is an exploded view showing a base assembly and a number of weight disks which are placed therein; and -
FIG. 8 is an exploded view of a handle, however in a slightly modified version, the distal side inFIG. 8 being turned to face downwards in accordance with the arrow A when the handle lies in the base assembly. - In purely general terms, the dumbbell according to the present invention belongs to that category of dumbbell which has a selectable number of
weight disks 1 which are fixable on ahandle 2 and which are intended, standing upright, to be accommodated incorresponding accommodation spaces 3 in abase assembly 4. The dumbbell is designed in such a manner that it is possible to lift up from the base assembly the handle with a selectable number of weight disks fixed on the handle. - It will further be apparent from
FIG. 1 that thehandle 2 displays, at its opposing ends,housings 5 from whichpin members 6 are disposed to be projectable in opposing directions in the longitudinal direction of thehandle 2 and which are movable along the longitudinal centre axis of the handle. While not being apparent fromFIG. 1 (see insteadFIGS. 5 , 6 and 7), theweight disks 1 havecentral openings 14 into which thepin members 6 are insertable. The purpose of the pin members is, by direct contact, abutment, to cooperate with and support theweight disks 1 when a dumbbell is lifted up out of the base assembly. In addition, the outer end sides of thehousings 5 facing away from one anotherdisplay connecting means 7 which are disposed for cooperation withcorresponding connecting means 8 on the weight disks. - As is intimated in
FIG. 1 , thepin members 6 are suitably designed as solid rods of superior mechanical strength. Possibly, a tubular design may also come into consideration, in which event there may be accommodated interiorly in the pin members parts that are not described here. The free ends of the pin members are smooth, possibly slightly bevelled, and in this position lack transversely directed projecting parts such as, for example, flip-out locking devices so as to facilitate entry into the weight disks. - The connecting means are designed in such a manner that, in the axial direction, i.e. along a longitudinal centre axis to the handle, they interconnect neighbouring weight disks at the same time as they permit a radial displacement of one weight disk in relation to another (in
FIG. 1 in the vertical direction, provided that thebase assembly 4 rests on a horizontal substrate). The innermost weight disks are correspondingly interconnected to the connectingmeans 7 of thehousings 5. - It follows from the foregoing that the number of weight disks which, in their
central openings 14, have thepin members 6, can no longer carry out the radial movements, for which reason on lifting of thehandle 2 out of thebase assembly 4, this number of weight disks will accompany the handle up out of the base assembly. - The number of weight disks which is located outside the raised weight disks, and into whose
central openings 14 thepin members 6 do not extend, is therefore not affected by the projectingpin members 6, for which reason these outer weight disks will remain in place in thebase assembly 4. - In order to realise the above-considered axial projection of the
pin members 6, there is disposed in the handle a screw mechanism which realises the axial projection or retraction of thepin members 6 when arotary section 9 between thehousings 5 of the handle is turned in relation to the housings about the longitudinal centre axis of the handle. - In order to define and/or display such projection lengths for the
pin members 6 as correspond to a complete number of weight disks, thehandle 2 of the dumbbell includes one or more indexing devices which will be described in greater detail hereinbelow. The purpose of the indexing device is thus to facilitate a gradual projection of thepin members 6 by correct step lengths. - It will be apparent from
FIG. 8 that the handle has aninner tube 40 with twolongitudinal apertures 41. Thepin members 6 which, in this embodiment, are solid metal rods, are longitudinally displaceable interiorly in theinner tube 40 and havepins 42 which extend out through the apertures, whereby thepin members 6 are prevented from rotating in relation to theinner tube 40. Outside theinner tube 40, there is provided anouter tube 43 with two helical grooves, in which thepins 42 are accommodated. The above-described design and construction implies that when relative rotation takes place between the inner 40 and the outer 43 tubes, thepin members 6 will move axially in the longitudinal direction. - Outside the
outer tube 43, there is disposed arotary portion 9 which the user of the dumbbell manually twists when a choice is made of the number ofweight disks 1 on the dumbbell. - The
rotary portion 9 is rotationally interconnected with anindex ring 45, which is included in the above-discussed indexing device and which displays, along its periphery,markings 46 for the number of weight disks to be accommodated on the dumbbell. Themarkings 46 are shown in anopening 47 in theouter casing 48 of thehousings 5, the outer casing being positionally fixed in the direction of rotation when the dumbbell rests in thebase assembly 4 and, moreover, the outer casing is rotationally interconnected with theinner tube 40. - It will be apparent from
FIG. 3 , which shows an embodiment modified in relation to that ofFIG. 8 , that thebase assembly 4 has twoseats 10 for accommodating and positionally fixing thehousings 5 of thehandle 2, in particular itsouter casing 48. In addition, thebase assembly 4 has, at its opposing ends,accommodation spaces 3 each for accommodating a set ofweight disks 1. Furthermore, theend walls 11 of thebase assembly 4 are provided with connectingmeans 12 for cooperation with thecorresponding connecting means 8 on both of the outermost of the weight disks standing upright in the base assembly. Hereby, the weight disks will be positioned in the direction of rotation in relation to thebase assembly 4. - The
housings 5 and theseats 10 have mutually cooperating positioning means 38, 39 by means of which the handle 2 (apart from its gripping portion 9) is positioned in the direction of rotation about the longitudinal centre axis of the handle in relation to the base assembly when the handle is in position in the base assembly. This position of rotation defined in relation to the base assembly also implies that theconnecting means 7 of thehousings 5 are located in the correct position in relation to the connecting means of the weight disks when the weight disks stand upright in the base assembly, since theconnecting means 8 of the outermost weight disks cooperate with theconnecting means 12 on theend walls 11 of the base assembly. The positioning means are in the form ofgrooves 38 in thehousings 5, andprojections 39 in theseats 10 insertable in the grooves. - According to the present invention, it is possible to dispense with the positioning means 38 and 39, since the
handle 2 of the assembly and theweight disks 1 are also aligned in the direction of rotation about the longitudinal centre axis of the dumbbell by cooperation between theconnecting means 8 of theweight disks 1 and the connectingmeans 12 of thebase assembly 4, or alternatively between corresponding connecting means on the weight disks. - It will be apparent from
FIGS. 5 and 6 taken together that the weight disks are substantially circular, planar disks withcentral openings 14 for accommodating thepin members 6 on thehandle 2. Furthermore, theweight disks 1 have substantially circular peripheral edges, which are unbroken and which extend throughout the entire periphery of the whole of the weight disk. Otherwise expressed, thecentral openings 14 have no communication whatever with the peripheral edges of the weight disks in the form of grooves, recesses or the like. - It will be further apparent from
FIGS. 5 and 6 that the connectingmeans 8 of theweight disks 1 include adepression 16 on the one side of the weight disk and acorresponding projection 17 on the opposing side of the weight disk. Preferably, theprojections 17 and therecesses 16 are complementary to one another, although this is not absolutely critically necessary. Both the projections and the recesses have a longitudinal centre line, which is also a diameter line for the weight disk through thecentral opening 14. In the longitudinal direction of this centre line, both thedepressions 16 and theprojections 17 are cuneiform, symmetrically about the longitudinal centre line. Further, the cross-sectional configuration in thedepressions 16 is undercut, for example dovetailed, theprojections 17 having a corresponding profile. This implies that when two weight disks are interconnected with theprojection 17 on the one weight disk accommodated in thedepression 16 on the other weight disk, the weight disks can no longer be displaced in the axial direction in relation to one another. On the other hand, they are displaceable only in one direction along the above-mentioned longitudinal centre line to theprojection 17 and thedepression 16. This longitudinal centre line is vertical when the weight disks are in position upright in the base assembly 4 (seeFIG. 1 ) and in the direction of rotation are aligned by cooperation between theprojections 17 of the outermost weight disk and the connecting means of thebase assembly 4. - It will be apparent from
FIGS. 1 and 7 that when theweight disks 1 are standing in thebase assembly 4 or are just about to lifted up out of or deposited down into the base assembly, the widest ends of theprojections 17 and recesses ordepressions 16 are turned to face upwards, for which reason an inner weight disk 1 (located more proximal the handle 2) can always be lowered down into or lifted up out of an outer weight disk, as long as thepin members 6 do not extend through thecentral openings 14 in both of these weight disks. - It will be apparent from
FIG. 2 that thehousings 5 have a corresponding design of their connectingmeans 7, viz.projections 18, which may be said to correspond to a part of theprojection 17 on a weight disk and which therefore fit into thedepressions 16 on both of theinnermost weight disks 1. - It will be apparent from
FIG. 5 that theprojection 17 on the weight disk has, in its narrower end, achange bevel 19 whose purpose is to facilitate insertion of theprojection 17 in a correspondingdepression 16 on an adjacent weight disk. It will further be apparent that thedepression 16 is open all the way out to the peripheral edge of the weight disk so that the projection on an adjacent weight disk can thereby readily be passed down in thewider end 20 of adepression 16. - As was considered above, both of the
pin members 6 are projectable in opposing axial directions from thehandle 2 by rotation of therotary portion 9 of the handle in relation to thehousings 5 of the handle which, in the direction of rotation, is positionally fixed in thebase assembly 4 via theprojections 18 of thehousings 5 and thedepressions 16 andprojections 17 of theweight disks 1, theprojection 17 of the outermost weight disk being accommodated in the connecting means 12 of thebase assembly 4. Since this axial projection takes place with the aid of a screw mechanism, the projection will be continuous as a function of the angle of rotation of therotary portion 9. It will readily be perceived that only certain projection lengths of the pin members are desirable, namely such projection lengths as imply that the end surfaces 21 of thepin members 6 are located immediately inside an outer side of aweight disk 1 standing upright in the base assembly. Setting of such projection lengths is made possible or facilitated by the above mentioned indexing devices. With such a projection length, all weight disks inside the relevant weight disk in the radial direction will have complete support from thepin member 6 and the outermost weight disk has as good support as it is possible to achieve. On the other hand, the weight disk lying outside is wholly unaffected by thepin member 6. - In order to ensure that, on using a raised dumbbell, no relative rotation takes place between the
rotary portion 9 and the weight disks connected to thehousings 5, for example because of the flywheel effect of the weight disks, which might possibly entail that thepin members 6 are retracted to some extent, so that at least the outermost weight disks are free and will fall off the dumbbell, both of thehousings 5 have locking means which, in selected projection lengths, lock the pin members in the axial direction as soon as the dumbbell is lifted out of thebase assembly 4. To this end, both of thepin members 6 have a first series of recesses 22 (FIGS. 1 and 4 ), where the distance between adjacent recesses corresponds to the thickness of oneweight disk 1. Interiorly in both of thehousings 5, there are provided, as will be apparent fromFIGS. 4 and 8 , slidingportions 23 with openings through which thepin members 6 extend. The slidingportions 23 are spring-biased by means ofsprings 24 in a downward direction when the dumbbell rests in thebase assembly 4. In such instance, the slidingportions 23 have edges which; under the action of thesprings 24, strive to snap down into one of therecesses 22 so that, as a result, the pin members are locked in the axial direction as a result of the engagement between therecesses 22 and the slidingportions 23. - In order to permit outward pivoting of both of the
pin members 6 when the dumbbell rests in thebase assembly 4, blocking means are provided which block the locking function of the locking means, but which cease to function as soon as the dumbbell is lifted out of thebase assembly 4. The blocking means are in the form ofupstanding heels 25 which are disposed on theseats 10 in thebase assembly 4. Theheels 25 are disposed to extend in throughopenings 26 in the lower sides of thehousings 5 when the housings rest in the seats 10 (FIG. 2 ). When theheels 25 in this manner extend in to the interior of the housings, they come into contact withlower end portions 27 on the above-mentioned slidingportions 23 so that these are lifted a sufficient distance against the action of thesprings 24 to become disengaged from therecesses 22 of thepin members 6. - In the foregoing, it was mentioned that the projection of both of the pin members in the axial direction takes place in a continuous movement by rotation of the
rotary portion 9 of the handle in relation to thehousings 5. In order to obtain stepwise projection lengths of the pin members which correspond to the locking positions for the locking means and where, as was mentioned above, the end surfaces of the pin members are located immediately inside the outer sides of the relevant weight disks, the present invention includes, as was mentioned above, an indexing device which gives stepwise setting possibilities in the longitudinal direction of thepin members 6. This indexing device comprises a second series ofrecesses 28 on thepin members 6, where the distance between adjacent recesses in the first and the second series mutually corresponds and corresponds to the thickness of one weight disk. Therecesses 28 in the second series have V-shaped or circular cross section in order to avoid an excessively powerful locking function. Interiorly in each one of thehousings 5, there is further provided a snap portion 29 (FIG. 4 ) which, under the action of a spring (not shown in this Figure), is movable into engagement with one of therecesses 28. In such instance, the design and formation of the end of thesnap portion 29 facing towards the pin members and the formation of therecesses 28 are such that an accurate stepwise projection of the pin members can take place without the resistance being excessively great on “unscrewing” of the pin members. - The
snap portions 29 fulfil a further function, namely that of preventing lifting of thehandle 2 out of thebase assembly 4 when thepin members 6 are located in “incorrect” positions. It will be apparent fromFIG. 2 that thehousings 5 haveopenings 36 through which thesnap portions 29 can extend out when the inner end regions of the snap portions are located in abutment against thepin members 6 between two of theirrecesses 28. When thesnap portions 29 by such means extend outside the peripheries of thehousings 5, their projecting portions will be accommodated in correspondingrecesses 37 in theseats 10 of thebase assembly 4 in order thereby to prevent lifting of thehandle 2 out of the base assembly with incorrect projection lengths of thepin members 6. -
FIG. 8 shows a slightly modified embodiment, where the one series ofrecesses 28, thesnap portion 29, theopening 36 as well as therecess 37 are omitted. The correct projection length for thepin members 6 is realised in this embodiment in that there aredisposed recesses 49 along the peripheries of the index rings 45 at equal spacing in the circumferential direction. On the seats, catch-shapedprojections 50 are provided which, through openings from beneath, extend into thehousings 5 when the dumbbell rests in thebase assembly 4. The projections have shanks which are substantially parallel with the centre axis of thehandle 2 and which grasp interiorly about the peripheral edge of the index rings 45. When these projections are located between therecesses 49 of the index rings 45, they prevent a lifting of the dumbbell up out of thebase assembly 4. - When, on the other hand, the
projections 50 are located in register with any of therecesses 49, lifting may take place. In such positions, theindex ring 45, and thereby the grippingportion 9 and theouter tube 43 are in such positions of rotation that the outer end surfaces 21 of thepin members 6 are located immediately inside the outsides of twoweight disks 1. That number of weight disks which is thus carried by thepin members 6 is displayed as a corresponding marking 46 in theopening 47 of thehousing 5. - As is apparent from
FIGS. 5 and 6 , the weight disks are separate units which, apart from the connectingmeans handle 2 is completely free throughout the entire length of the handle in principle between the connectingmeans 7 of thehousings 5. This is a crucial feature in the subject matter of the present invention, since such connection struts or rods could hit and injure the wrist of a user if the dumbbell, because of its considerable flywheel effect, were to twist or pivot in the grip of the user. - According to the present invention, both of the
pin members 6 are disposed coaxially, with a longitudinal centre line to thehandle 2 and coaxially in relation to the circumferential surfaces of both of thehousings 5. Since theopenings 14 of theweight disks 1 are disposed coaxially with theperipheral edges 15 of the weight disks, the dumbbell, as thus far described, will be rotationally symmetrical as regards the position of the point of gravity. - It will be apparent from
FIGS. 5 and 6 , primarilyFIG. 6 , that each weight disk has acore 30 of a relatively heavy, first material and anouter layer 31 surrounding the core, of a second material. Thecore 30 comprises a substantially planar, relatively thin andcircular disk 32 of metal, preferably steel, which has acentral opening 33 which is coaxial with thecentral opening 14 of the weight disk and which may appropriately be slightly larger than it. On that side of thedisk 32 where thedepression 16 of the disk is disposed, there are secured substantially circle-segment shapedweight portions 34, which are of considerably greater thickness than thedisk 32. In the radial direction, theweight portions 34 extend in to the immediate proximity of the longitudinal, slantingedges 35 which, on both sides, define thedepression 16 of the weight disk. The relatively slight cuneiform configuration which thedepressions 16 and theprojections 17 have on the weight disk entails that the total point of gravity of the weight disk will but insignificantly deviate from the centre of the through-goingopening 14. Further, the edges of theweight portions 34 facing towards thedepressions 16 have a supporting effect against the opposingedges 35 of the depression. - The
outer layer 31 of the weight disk is suitably manufactured by injection moulding of plastic around thecore 30. This implies that theprojections 17 of the weight disks also consist of or comprise plastic. Further, thecentral opening 14 is surrounded by a plastic layer.
Claims (15)
1. A dumbbell with weight disks, where the number of weight disks on the dumbbell is selectable, and the weight disks may be accommodated standing upright in two sets in a base assembly, the weight disks having through-going openings which are located along a straight line with the weight disks standing in the base assembly, and the weight disks have mutually cooperating connecting means which are disposed, in an axial direction of the dumbbell, to interconnect neighbouring weight disks, but in a radial direction to permit separation of a weight disk from a neighbouring weight disk, wherein the weight disks are in the form of substantially planar disks with a substantially circular unbroken peripheral edge and with the openings located centrally, that all connecting means have a longitudinal centre line which coincides with a diameter line for the weight disk, and with the permitted, radial displacement between two neighbouring weight disks.
2. The dumbbell as claimed in claim 1 , wherein the connecting means on each weight disk include a depression which is disposed on the one side of the weight disk, is cuneiform in the longitudinal direction and undercut in the transverse direction, and a projection disposed on the opposing side of the weight disk in register with the depression and substantially complementary thereto.
3. The dumbbell as claimed in claim 2 , wherein the depression is, at least at its wider end, open towards the peripheral edge of the weight disk.
4. The dumbbell as claimed in, wherein the connecting means extend along substantially the whole of the diameter of the weight disk.
5. The dumbbell as claimed in, wherein the weight disk is manufactured from at least one first material constituting a core in the weight disk and one second material, constituting a surface layer for the weight disk; and that the core also extends over that region of the weight disk where the weight disk displays its connecting means.
6. The dumbbell as claimed in claim 5 , wherein the core comprises a substantially circular disk and two substantially circle-segment shaped weight parts which are disposed thereon, and which are disposed on each side of the depression.
7. The dumbbell as claimed in, wherein the undercut depression has a substantially dovetail-shaped cross section.
8. The dumbbell as claimed in, wherein the weight disk has means for its positioning about its centre axis in relation to the base assembly; and that a plurality of weight disks in their thus established positions have their connecting means in engagement with one another; and that the centre lines of the connecting means are substantially vertical when the base assembly stands on a horizontal substrate.
9. The dumbbell as claimed in, wherein all weight disks in a base assembly have the same configuration and that they are randomly interchangeable in position in the base assembly as well as being separate and discrete from one another.
10. The dumbbell as claimed in claim 2 , wherein the connecting means extend along substantially the whole of the diameter of the weight disk.
11. The dumbbell as claimed in claim 2 , wherein the weight disk is manufactured from at least one first material constituting a core in the weight disk and one second material, constituting a surface layer for the weight disk; and that the core also extends over that region of the weight disk where the weight disk displays its connecting means.
12. The dumbbell as claimed in claim 11 , wherein the core comprises a substantially circular disk and two substantially circle-segment shaped weight parts which are disposed thereon, and which are disposed on each side of the depression.
13. The dumbbell as claimed in claim 2 , wherein the undercut depression has a substantially dovetail-shaped cross section.
14. The dumbbell as claimed in claim 2 , wherein the weight disk has means for its positioning about its centre axis in relation to the base assembly; and that a plurality of weight disks in their thus established positions have their connecting means in engagement with one another; and that the centre lines of the connecting means are substantially vertical when the base assembly stands on a horizontal substrate.
16. The dumbbell as claimed in claim 2 , wherein all weight disks in a base assembly have the same configuration and that they are randomly interchangeable in position in the base assembly as well as being separate and discrete from one another.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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SE0702657A SE532770C2 (en) | 2007-11-29 | 2007-11-29 | Dumbbell |
SE0702657-8 | 2007-11-29 | ||
PCT/SE2008/000661 WO2009070084A1 (en) | 2007-11-29 | 2008-11-27 | Dumbbell |
Publications (1)
Publication Number | Publication Date |
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US20100304940A1 true US20100304940A1 (en) | 2010-12-02 |
Family
ID=40678817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/744,975 Abandoned US20100304940A1 (en) | 2007-11-29 | 2008-11-27 | Dumbbell |
Country Status (3)
Country | Link |
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US (1) | US20100304940A1 (en) |
SE (1) | SE532770C2 (en) |
WO (1) | WO2009070084A1 (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100304939A1 (en) * | 2007-11-29 | 2010-12-02 | Tomas Svenberg | Dumbbell |
US20120220434A1 (en) * | 2011-02-24 | 2012-08-30 | Usa Sports, Inc. | Adjustable dumbbells |
WO2014126557A1 (en) | 2013-02-13 | 2014-08-21 | Vintage Gold Holdings Limited | Weight set selector and locking mechanism |
US8932188B2 (en) | 2012-03-05 | 2015-01-13 | Personality Gym Ab | Weight apparatus including weight adjustment arrangement |
US20160059064A1 (en) * | 2014-08-28 | 2016-03-03 | Icon Health & Fitness, Inc. | Weight Selector Release Mechanism |
WO2016109326A1 (en) * | 2014-12-31 | 2016-07-07 | Nautilus, Inc. | Weight sensing base for an adjustable dumbbell system |
DE112013002802B4 (en) * | 2012-06-05 | 2016-08-25 | Personality Gym Ab | Weight device with weight adjustment device |
US10188890B2 (en) | 2013-12-26 | 2019-01-29 | Icon Health & Fitness, Inc. | Magnetic resistance mechanism in a cable machine |
US10252109B2 (en) | 2016-05-13 | 2019-04-09 | Icon Health & Fitness, Inc. | Weight platform treadmill |
US10279212B2 (en) | 2013-03-14 | 2019-05-07 | Icon Health & Fitness, Inc. | Strength training apparatus with flywheel and related methods |
US10293211B2 (en) | 2016-03-18 | 2019-05-21 | Icon Health & Fitness, Inc. | Coordinated weight selection |
US10426989B2 (en) | 2014-06-09 | 2019-10-01 | Icon Health & Fitness, Inc. | Cable system incorporated into a treadmill |
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Also Published As
Publication number | Publication date |
---|---|
SE532770C2 (en) | 2010-04-06 |
WO2009070084A8 (en) | 2009-08-06 |
SE0702657L (en) | 2009-05-30 |
WO2009070084A1 (en) | 2009-06-04 |
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