US20040162196A1 - Fixed dumbbell - Google Patents
Fixed dumbbell Download PDFInfo
- Publication number
- US20040162196A1 US20040162196A1 US10/774,482 US77448204A US2004162196A1 US 20040162196 A1 US20040162196 A1 US 20040162196A1 US 77448204 A US77448204 A US 77448204A US 2004162196 A1 US2004162196 A1 US 2004162196A1
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- United States
- Prior art keywords
- flange
- weight
- dumbbell
- flanges
- recess
- 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.)
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Classifications
-
- 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
-
- 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
- A63B21/0726—Dumb bells, i.e. with a central bar to be held by a single hand, and with weights at the ends
Definitions
- the invention relates generally to dumbbells.
- dumbbells are commonly used by body builders and health enthusiasts as an exercise aid and are commonly found in health clubs. There are two principle dumbbell designs found commercially.
- the first type of dumbbell (the hexagonal dumbbell) utilizes two hexagonal caps which are cast around a knurled handle of steel.
- the second dumbbell design utilizes repeatable cast iron (or steel) plates mounted to both ends of a steel (or some other alloy) bar possessing small diameter shoulders. The plates abut the shoulders of the bar and are typically mounted to the shoulders by means of threaded fasteners.
- the second dumbbell design is plagued by a single problem: the plates, through typical abuse, come loose on the handle. A few reasons exist for this occurrence, namely:
- the retaining bolt/washer assembly wears through normal usage/abuse. Looseness then develops and is accelerated.
- the plates will shift with respect to each other on the handle and act to either (a) turn out the threaded fastener, or (b) rotate relative to one another such that they “seek” a composite dimensional length shorter than when they were originally tightened in place at the factory. This occurs because the individual plate surfaces comprising the cap are not cast/machined parallel.
- the present invention overcomes the limitations of the prior art by providing a dumbbell having an handle positioned between two weights.
- the handle has an elongated central portion with opposite first and second ends.
- First and second flanges are formed on the first and second ends of the central portion, respectively.
- First and second weights are attached to the first and second flanges, respectively.
- the first weight has a recess which is dimensioned and configured to receive the first flange.
- the second weight has a recess which is dimensioned and configured to receive the second flange.
- Each flange has a peripheral edge and is attached to its respective weight by a plurality of bolts positioned adjacent the peripheral edge.
- FIG. 1. is a perspective view of the invention.
- FIG. 2. is a side view of the handle portion of the present invention.
- FIG. 3. is a side view of one end cap of the present invention.
- FIG. 4. is a cross sectional view of the end cap shown in FIG. 3 drawn through line A-A.
- FIG. 5. is a front view of the handle portion of the present invention.
- FIG. 6. is a perspective view of an alternate embodiment of the present invention.
- FIG. 7. is a perspective view of the handle portion of the embodiment shown in FIG. 6.
- FIG. 8. is a perspective view of one end cap of the embodiment shown in FIG. 6.
- a dumbbell made in accordance with the present invention shown generally as item 10 , consists of an elongated handle portion 12 having flanges 14 on each end which are mounted to end caps (weights) 16 by bolts 18 .
- Handle portion 12 has a cylindrical portion 20 which is dimensioned to permit a user to grasp.
- Cylindrical portion 20 has a longitudinal axis 21 and a knurled surface to maximize the users grip on the handle.
- Flanges 14 are formed on the opposite ends of cylindrical portion 20 .
- handle portion 12 is formed from a continuous piece of machined or cast steel (or iron).
- Radius 22 where the cylindrical portion flares out to form flange 14 is preferably curved, thereby greatly reducing the stress concentrations at the handle/flange interface.
- Flanges 14 preferably extend perpendicularly from cylindrical portion 20 .
- Flanges 14 each have flat outer surface 24 , a peripheral edge 29 an external radiused edge 26 , and internal chamfered edge 28 , and rim 30 formed between the radiused and chamfered edges.
- the dimension of chamfered edge 28 has been exaggerated in order to more clearly show this feature. In a working dumbbell, chamfered edge 28 would be specified as ⁇ fraction (1/16) ⁇ th of an inch wide by 45°, while rim 30 would be about 3 ⁇ 8ths of an inch wide.
- Flanges 14 have several holes 33 positioned along peripheral edge 29 which are configured to receive bolts 18 .
- Rim 30 is preferably perpendicular to outer surface 24 and parallel to axis 21 .
- End caps (weights) 16 are preferably cylindrical and have longitudinal axis 32 , inner face 34 and opposite outer face 36 .
- a recess (counterbore) 38 is formed in inner face 34 and is defined by internal rim 40 and back wall 42 .
- Tapped holes 44 are formed through back wall 42 and are dimensioned to receive and retain the ends of bolts 18 .
- Recess 38 and cap 16 are coaxially aligned.
- Internal rim 40 is preferably perpendicular to back wall 42 and parallel to axis 32 .
- Recess 38 of cap 16 and flanges 14 of handle 12 are dimensioned and configured such that the flanges fit tightly within the recesses.
- the inside diameter of recess 38 between rim 40 is dimensioned to be slightly greater than the outside diameter of flanges 14 such that when inserted into the cavity, the radial shear on bolts 18 induced by shearing movement of back wall 42 across flange surface 24 is minimized.
- Relief 43 is formed peripherally around back wall 42 to permit outside face 24 to make close contact (seat) with back wall 42 .
- Flange 14 is positioned within recess 38 of cap 16 such that holes 33 on the flange align with tapped holes 44 in the cap, permitting bolts 18 to pass through holes 33 and thread into tapped holes 44 .
- the handle portion and the caps are coaxially aligned.
- holes 33 are formed in flange 14 along peripheral edge 29 and adjacent rim 30 .
- holes 33 should be formed as close as possible to rim 30 in order to maximize the distance between the holes and longitudinal axis 21 .
- Threaded fasteners are substantially stronger in tension than in shear.
- the present design minimizes the shear loading on threaded fasteners 18 .
- flanges 14 are inserted in recess 38 of end caps 16
- rim 30 of the flange and inner rim 40 of the cap are in near physical contact, permitting the end cap and the handle portion to efficiently transmit shear forces between rim 30 and inner rim 40 should the dumbbell be dropped.
- less shear force is applied to fasteners 18 and the fasteners are less likely to loosen or fail.
- the moment arm is lengthened and the mechanical advantage provided to the fasteners is maximized.
- the distance between fasteners 18 and longitudinal axis 21 is increased, the tensile loads experienced by a given sized faster is reduced when the dumbbell is dropped.
- the fasteners are less likely to loosen or fail and the dumbbell is capable of enduring repeated abuse.
- the present design also has the advantage of ease of construction, since the weight of the dumbbell can be altered simply by changing the size and therefore, the weight of end caps 16 .
- dumbbell 100 is constructed using hexagonal caps 110 .
- Dumbbell 100 has cylindrical portion 102 having flanges 104 formed on its opposite ends.
- Flanges 104 are hexagonal and have rim 106 along its peripheral edge and flat outer faces (surfaces) 108 .
- Caps 110 have hexagonal recesses 112 which have internal rim 114 and flat wall 116 .
- Hexagonal recess 112 is dimensioned and configured to receive flange 104 such that outer faces 108 abuts wall 116 and rim 106 closely abuts inner rim 114 .
- Flanges 104 are bolted to caps 110 by bolts 120 which pass through apertures 122 in the flanges and into tapped holes 124 in the caps, as in the previous embodiment.
- the hexagonal flanges in combination with the hexagonal recesses prevent the flanges from rotating should the dumbbell be accidentally dropped.
- the hexagonal flanges resist rotation of the cap 110 relative to the handle flange 104 , minimizing rotational shear on the bolts 120 , thereby making the dumbbell stronger. Furthermore, the present design permits the user to replace the handle portion on the dumbbells should the handle portion be damaged.
Abstract
The present invention is a dumbbell having superior strength and durability. The dumbbell consists of a pair of end caps (weights) positioned on either end of a handle. The handle has an elongated central portion with opposite first and second ends. First and second flanges are formed on the first and second ends of the central portion, respectively. First and second weights (end caps) are attached to the first and second flanges, respectively. The first weight has a recess which is dimensioned and configured to receive the first flange. Likewise, the second weight has a recess which is dimensioned and configured to receive the second flange. Each flange has a peripheral edge and is attached to its respective weight by a plurality of bolts positioned adjacent the peripheral edge.
Description
- This application claims priority from provisional application serial No. 60/446,285 which was filed on Feb. 11, 2003, which is hereby incorporated by reference.
- The invention relates generally to dumbbells.
- Dumbbells are commonly used by body builders and health enthusiasts as an exercise aid and are commonly found in health clubs. There are two principle dumbbell designs found commercially. The first type of dumbbell (the hexagonal dumbbell) utilizes two hexagonal caps which are cast around a knurled handle of steel. The second dumbbell design utilizes repeatable cast iron (or steel) plates mounted to both ends of a steel (or some other alloy) bar possessing small diameter shoulders. The plates abut the shoulders of the bar and are typically mounted to the shoulders by means of threaded fasteners.
- Both of the above dumbbell designs suffer from several problems. Firstly, the hexagonal dumbbells tend to come loose fairly easily from the handles around which they are cast. This often happens if the dumbbell is repeatedly dropped. Once loose, the assembly can only be repaired by welding the handles back onto the caps, which draws carbon from the metal rendering the joint brittle and making it prone to breakage through shock loading.
- The second dumbbell design is plagued by a single problem: the plates, through typical abuse, come loose on the handle. A few reasons exist for this occurrence, namely:
- The retaining bolt/washer pushing the plates against the handle shoulder come loose.
- The retaining bolt/washer assembly wears through normal usage/abuse. Looseness then develops and is accelerated.
- The plate adjacent to the retaining washer and the plate adjacent to the handle shoulder wear and looseness then develops;
- The typically small diameter dumbbell handle shoulder wears and looseness develops.
- The plates will shift with respect to each other on the handle and act to either (a) turn out the threaded fastener, or (b) rotate relative to one another such that they “seek” a composite dimensional length shorter than when they were originally tightened in place at the factory. This occurs because the individual plate surfaces comprising the cap are not cast/machined parallel.
- Manufacturers have attempted to circumvent some of these problems by turning the handle into a bolt by threading each end and screwing the ends into the center of each solid cap. These assemblies, if not machined accurately, will un-thread and loosen. This approach also leads to a dumbbell which is prone to bending and/or breaking at the handle/cap interface. The present invention overcomes these drawbacks by providing an improved dumbbell construction with a more robust joint between the handle and the cap.
- The present invention overcomes the limitations of the prior art by providing a dumbbell having an handle positioned between two weights. The handle has an elongated central portion with opposite first and second ends. First and second flanges are formed on the first and second ends of the central portion, respectively. First and second weights are attached to the first and second flanges, respectively. The first weight has a recess which is dimensioned and configured to receive the first flange. Likewise, the second weight has a recess which is dimensioned and configured to receive the second flange. Each flange has a peripheral edge and is attached to its respective weight by a plurality of bolts positioned adjacent the peripheral edge.
- FIG. 1. is a perspective view of the invention.
- FIG. 2. is a side view of the handle portion of the present invention.
- FIG. 3. is a side view of one end cap of the present invention.
- FIG. 4. is a cross sectional view of the end cap shown in FIG. 3 drawn through line A-A.
- FIG. 5. is a front view of the handle portion of the present invention.
- FIG. 6. is a perspective view of an alternate embodiment of the present invention.
- FIG. 7. is a perspective view of the handle portion of the embodiment shown in FIG. 6.
- FIG. 8. is a perspective view of one end cap of the embodiment shown in FIG. 6.
- In the drawings, like characters of reference indicate corresponding parts in the different figures.
- Referring firstly to FIGS. 1, 2 and3, a dumbbell made in accordance with the present invention, shown generally as
item 10, consists of anelongated handle portion 12 havingflanges 14 on each end which are mounted to end caps (weights) 16 bybolts 18.Handle portion 12 has acylindrical portion 20 which is dimensioned to permit a user to grasp.Cylindrical portion 20 has alongitudinal axis 21 and a knurled surface to maximize the users grip on the handle.Flanges 14 are formed on the opposite ends ofcylindrical portion 20. Preferably,handle portion 12 is formed from a continuous piece of machined or cast steel (or iron).Radius 22 where the cylindrical portion flares out to formflange 14 is preferably curved, thereby greatly reducing the stress concentrations at the handle/flange interface.Flanges 14 preferably extend perpendicularly fromcylindrical portion 20.Flanges 14 each have flatouter surface 24, aperipheral edge 29 an externalradiused edge 26, and internal chamferededge 28, andrim 30 formed between the radiused and chamfered edges. In the diagrams, the dimension ofchamfered edge 28 has been exaggerated in order to more clearly show this feature. In a working dumbbell, chamferededge 28 would be specified as {fraction (1/16)}th of an inch wide by 45°, whilerim 30 would be about ⅜ths of an inch wide.Flanges 14 haveseveral holes 33 positioned alongperipheral edge 29 which are configured to receivebolts 18.Rim 30 is preferably perpendicular toouter surface 24 and parallel toaxis 21. - End caps (weights)16 are preferably cylindrical and have
longitudinal axis 32,inner face 34 and oppositeouter face 36. A recess (counterbore) 38 is formed ininner face 34 and is defined byinternal rim 40 andback wall 42. Tappedholes 44 are formed throughback wall 42 and are dimensioned to receive and retain the ends ofbolts 18.Recess 38 andcap 16 are coaxially aligned.Internal rim 40 is preferably perpendicular to backwall 42 and parallel toaxis 32. -
Recess 38 ofcap 16 andflanges 14 ofhandle 12 are dimensioned and configured such that the flanges fit tightly within the recesses. Preferably, the inside diameter ofrecess 38 betweenrim 40 is dimensioned to be slightly greater than the outside diameter offlanges 14 such that when inserted into the cavity, the radial shear onbolts 18 induced by shearing movement ofback wall 42 acrossflange surface 24 is minimized.Relief 43 is formed peripherally aroundback wall 42 to permit outsideface 24 to make close contact (seat) withback wall 42.Flange 14 is positioned withinrecess 38 ofcap 16 such that holes 33 on the flange align with tappedholes 44 in the cap, permittingbolts 18 to pass throughholes 33 and thread into tappedholes 44. When the flanges are inserted into the cap, the handle portion and the caps are coaxially aligned. - Referring now to FIG. 5, holes33 are formed in
flange 14 alongperipheral edge 29 andadjacent rim 30. Preferably, holes 33 should be formed as close as possible torim 30 in order to maximize the distance between the holes andlongitudinal axis 21. - The present invention has many advantages over the prior art. Threaded fasteners are substantially stronger in tension than in shear. The present design minimizes the shear loading on threaded
fasteners 18. Whenflanges 14 are inserted inrecess 38 ofend caps 16, rim 30 of the flange andinner rim 40 of the cap are in near physical contact, permitting the end cap and the handle portion to efficiently transmit shear forces betweenrim 30 andinner rim 40 should the dumbbell be dropped. As a result, less shear force is applied tofasteners 18 and the fasteners are less likely to loosen or fail. Also, by mountingflange 14 to cap 16 by fasteners positioned as close torim 30 and as far away fromlongitudinal axis 21, the moment arm is lengthened and the mechanical advantage provided to the fasteners is maximized. As the distance betweenfasteners 18 andlongitudinal axis 21 is increased, the tensile loads experienced by a given sized faster is reduced when the dumbbell is dropped. Thus, the fasteners are less likely to loosen or fail and the dumbbell is capable of enduring repeated abuse. The present design also has the advantage of ease of construction, since the weight of the dumbbell can be altered simply by changing the size and therefore, the weight ofend caps 16. - As can be seen in FIG. 6, it is not necessary for the flanges or the caps to be “circular”. Indeed, the flanges may be hexagonal, square, star shaped or any other shape. If the flanges are in the shape of a polygon such as a hexagon or a square, then the dumbbell may be made more resistant to damage as a result of an accidental drop. In the embodiment shown in FIG. 6,
dumbbell 100 is constructed usinghexagonal caps 110.Dumbbell 100 hascylindrical portion 102 havingflanges 104 formed on its opposite ends.Flanges 104 are hexagonal and haverim 106 along its peripheral edge and flat outer faces (surfaces) 108.Caps 110 havehexagonal recesses 112 which haveinternal rim 114 andflat wall 116.Hexagonal recess 112 is dimensioned and configured to receiveflange 104 such that outer faces 108 abutswall 116 andrim 106 closely abutsinner rim 114.Flanges 104 are bolted tocaps 110 bybolts 120 which pass throughapertures 122 in the flanges and into tapped holes 124 in the caps, as in the previous embodiment. In this embodiment, the hexagonal flanges in combination with the hexagonal recesses prevent the flanges from rotating should the dumbbell be accidentally dropped. The hexagonal flanges resist rotation of thecap 110 relative to thehandle flange 104, minimizing rotational shear on thebolts 120, thereby making the dumbbell stronger. Furthermore, the present design permits the user to replace the handle portion on the dumbbells should the handle portion be damaged. - Specific embodiments of the present invention have been disclosed; however, several variations of the disclosed embodiment could be envisioned as within the scope of this invention. It is to be understood that the present invention is not limited to the embodiments described above, but encompasses any and all embodiments within the scope of the following claims.
Claims (20)
1. A dumbbell comprising:
an handle having an elongated central portion with opposite first and second ends,
a first flange formed on the first end and a second flange formed on the second end,
a first weight attached to the first flange, said first weigh having a first recess, said first recess dimensioned and configured to receive the first flange, and
a second weight attached to the second flange, said second weight having a second recess, said second recess dimensioned and configured to receive the second flange.
2. The dumbbell of claim 1 wherein each flange has a peripheral edge and wherein each flange is attached to its respective weight by a plurality of bolts positioned along the peripheral edge.
3. The dumbbell of claim 1 wherein each flange has an outward flat face and wherein each weight has an inner flat wall in the recess, the flat face of each flange abutting the flat wall of its respective weight.
4. The dumbbell of claim 1 wherein each flange has an external rim extending peripherally around the flange and wherein each weight has an internal rim extending peripherally around the recess, the external rim of each flange abutting the internal rim of the flange's corresponding weight.
5. The dumbbell of claim 2 wherein each flange has an external rim extending peripherally around the flange and wherein each weight has an internal rim extending peripherally around the recess, the external rim of each flange abutting the internal rim of the flange's corresponding weight.
6. The dumbbell of claim 5 wherein each flange has an outward flat face and wherein each weight has an inner flat surface in the recess, the flat face of each flange abutting the flat surface of its respective weight.
7. The dumbbell of claim 6 wherein the central portion, flanges and weights each have a longitudinal axis and wherein they are all coaxially aligned.
8. The dumbbell of claim 7 wherein the external rim of the flanges and the inner rim of the weights extend parallel to the longitudinal axis of the flanges and the weights, respectively.
9. The dumbbell of claim 7 wherein the flat face of each flange and the flat surface of each weight is perpendicular to the longitudinal axis of the flanges and the weights, respectively.
10. A dumbbell comprising:
an handle having a substantially cylindrical central portion having a longitudinal axis and opposite first and second ends,
opposite first and second flanges formed on the first and second ends of the handle, respectively, said flanges each extending perpendicularly from the central portion, each flange having a diameter, a thickness and a peripheral edge,
opposite first and second weights attached to the first and second flanges, respectively, each weight having a recess, each said recess having a diameter and a depth corresponding to the diameter and the thickness of the respective flange, respectively, the flange being retained in the recess,
each flange being secured to its respective weight by a plurality of bolts positioned along the flange adjacent the flange's peripheral edge.
11. The dumbbell of claim 10 wherein each flange has an outward flat face and wherein each weight has an inner flat surface in the recess, the flat face of each flange abutting the flat surface of its respective weight.
12. The dumbbell of claim 10 wherein each flange has an external rim extending peripherally around the flange and wherein each weight has an internal rim extending peripherally around the recess, the external rim of each flange abutting the internal rim of the flange's corresponding weight.
13. The dumbbell of claim 11 wherein each flange has an external rim extending peripherally around the flange and wherein each weight has an internal rim extending peripherally around the recess, the external rim of each flange abutting the internal rim of the flange's corresponding weight.
14. The dumbbell of claim 13 wherein the central portion, flanges and weights each have a longitudinal axis and wherein they are all coaxially aligned.
15. The dumbbell of claim 14 wherein the external rim of the flanges and the inner rim of the weights extend parallel to the longitudinal axis of the flanges and the weights, respectively.
16. The dumbbell of claim 14 wherein the flat face of each flange and the flat surface of each weight is perpendicular to the longitudinal axis of the flanges and the weights, respectively.
17. The dumbbell of claim 15 wherein the flat face of each flange and the flat surface of each weight is perpendicular to the longitudinal axis of the flanges and the weights, respectively.
18. A dumbbell comprising:
a handle having an substantially cylindrical central portion having opposite first and second ends,
opposite first and second flanges formed on the first and second ends of the handle, respectively, said flanges each extending perpendicularly from the central portion, each flange having a diameter, a thickness, an outwardly facing flat surface, a peripheral edge and a rim adjacent the peripheral edge,
opposite first and second weights attached to the first and second flanges, respectively, each weight having a recess, each said recess having a diameter, a depth, an inner flat surface, and an internal rim extending peripherally around the inner flat surface, the diameter and depth of the recesses corresponding to the diameter and the thickness of the respective flange,
each flange being retained in the recess of its corresponding weight with the outwardly facing flat surface of each flange abutting the inner flat surface of the corresponding weight and the rim of the flange abutting the internal rim of the corresponding weight.
each flange being secured to its respective weight by a plurality of bolts positioned along the flange adjacent the flange's peripheral edge.
19. The dumbbell of claim 18 wherein the internal rim of the weights and the rim of the flanges are perpendicular to the inner flat surface of the weights and the outwardly facing flat surface of the flanges, respectively.
20. The dumbbell of claim 19 wherein the flanges, weights and the central portion are all coaxially aligned.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/774,482 US20040162196A1 (en) | 2003-02-11 | 2004-02-10 | Fixed dumbbell |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US44628503P | 2003-02-11 | 2003-02-11 | |
US10/774,482 US20040162196A1 (en) | 2003-02-11 | 2004-02-10 | Fixed dumbbell |
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US20040162196A1 true US20040162196A1 (en) | 2004-08-19 |
Family
ID=32853427
Family Applications (1)
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US10/774,482 Abandoned US20040162196A1 (en) | 2003-02-11 | 2004-02-10 | Fixed dumbbell |
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Cited By (15)
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US20070027007A1 (en) * | 2005-07-27 | 2007-02-01 | Iron Grip Barbell Company, Inc. | Weight assembly and method of manufacture |
US7819786B1 (en) * | 2009-04-29 | 2010-10-26 | Guofang Cao | Dumbbell assembly |
US20120214653A1 (en) * | 2011-02-18 | 2012-08-23 | Elaine Tsou | Yoga block |
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 |
US10441840B2 (en) | 2016-03-18 | 2019-10-15 | Icon Health & Fitness, Inc. | Collapsible strength exercise machine |
US10449416B2 (en) | 2015-08-26 | 2019-10-22 | Icon Health & Fitness, Inc. | Strength exercise mechanisms |
US10661114B2 (en) | 2016-11-01 | 2020-05-26 | Icon Health & Fitness, Inc. | Body weight lift mechanism on treadmill |
US10940360B2 (en) | 2015-08-26 | 2021-03-09 | Icon Health & Fitness, Inc. | Strength exercise mechanisms |
USD962364S1 (en) * | 2021-11-04 | 2022-08-30 | Shenzhen City Feiduba Technology Ltd. Company | Dumbbell |
USD962365S1 (en) * | 2021-11-04 | 2022-08-30 | Shenzhen City Feiduba Technology Ltd. Company | Dumbbell |
USD982683S1 (en) * | 2021-10-11 | 2023-04-04 | Shenzhen Feiduba Technology Co., Ltd. | Neoprene coated dumbbell |
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US6228003B1 (en) * | 1998-03-17 | 2001-05-08 | Icon Health And Fitness, Inc. | Adjustable dumbbell and system |
US6224520B1 (en) * | 2000-05-17 | 2001-05-01 | Wen-Chung Hsu | Dumbbell |
US20060234843A1 (en) * | 2005-04-15 | 2006-10-19 | James Chen | Weight-adjustable dumbbell |
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US20070027007A1 (en) * | 2005-07-27 | 2007-02-01 | Iron Grip Barbell Company, Inc. | Weight assembly and method of manufacture |
US7819786B1 (en) * | 2009-04-29 | 2010-10-26 | Guofang Cao | Dumbbell assembly |
US20100279829A1 (en) * | 2009-04-29 | 2010-11-04 | Guofang Cao | Dumbbell Assembly |
US20120214653A1 (en) * | 2011-02-18 | 2012-08-23 | Elaine Tsou | Yoga block |
US10279212B2 (en) | 2013-03-14 | 2019-05-07 | Icon Health & Fitness, Inc. | Strength training apparatus with flywheel and related methods |
US10188890B2 (en) | 2013-12-26 | 2019-01-29 | Icon Health & Fitness, Inc. | Magnetic resistance mechanism in a cable machine |
US10426989B2 (en) | 2014-06-09 | 2019-10-01 | Icon Health & Fitness, Inc. | Cable system incorporated into a treadmill |
US10449416B2 (en) | 2015-08-26 | 2019-10-22 | Icon Health & Fitness, Inc. | Strength exercise mechanisms |
US10940360B2 (en) | 2015-08-26 | 2021-03-09 | Icon Health & Fitness, Inc. | Strength exercise mechanisms |
US10293211B2 (en) | 2016-03-18 | 2019-05-21 | Icon Health & Fitness, Inc. | Coordinated weight selection |
US10441840B2 (en) | 2016-03-18 | 2019-10-15 | Icon Health & Fitness, Inc. | Collapsible strength exercise machine |
US10252109B2 (en) | 2016-05-13 | 2019-04-09 | Icon Health & Fitness, Inc. | Weight platform treadmill |
US10661114B2 (en) | 2016-11-01 | 2020-05-26 | Icon Health & Fitness, Inc. | Body weight lift mechanism on treadmill |
USD982683S1 (en) * | 2021-10-11 | 2023-04-04 | Shenzhen Feiduba Technology Co., Ltd. | Neoprene coated dumbbell |
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USD962365S1 (en) * | 2021-11-04 | 2022-08-30 | Shenzhen City Feiduba Technology Ltd. Company | Dumbbell |
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