USER-ASSEMBLED FREE WEIGHTS
A user-assembled free weight includes a container made of a contiguous material and having at least one cavity. A heavy curable fill material is placed inside the at least one cavity. Together the heavy curable fill material and the container produce at least a target weight and the heavy curable fill material is non-removable from the container.
The present application is based on and claims the benefit of U.S. provisional patent application Ser. No. 63/089,129, filed Oct. 8, 2020, the content of which is hereby incorporated by reference in its entirety.
BACKGROUNDDumbbells, kettlebells and weight plates are free weights used in weight training that do not constrain a user to specific, fixed movements. A dumbbell includes the familiar structure of a handle with a weight or weights and may be used individually or in pairs. Commercially available dumbbells are manufactured to be of metal, such as cast iron or steel, sometimes coated with rubber or neoprene for comfort. A kettlebell is a cast iron or cast steel ball with a handle attached to the top and may be used to perform many types of load bearing exercises, such as ballistic exercises that require cardiovascular, strength and flexibility training. Unlike a dumbbell, a kettlebell's center of mass is extended beyond the hand, this allows for swinging movements. A weight plate may come in all shapes or sizes, are manufactured to be of metal, such as cast iron or steel, and sometimes coated with rubber or urethane. Weight plates may be used with regular or standard weight lifting bars and provide for flexibility in changing the amount of weight being lifted by changing the number and size of plates.
The discussion above is merely provided for general background information and is not intended to be used as an aid in determining the scope of the claimed subject matter.
SUMMARYA user-assembled free weight includes a container and a heavy curable fill material placed inside the container. The container is made of a contiguous material having at least one cavity. Together the heavy curable fill material and the container produce at least a target weight and the heavy curable fill material is non-removable from the container.
A user-assembled free weight includes a container having at least one cavity coupled to a hollow handle. The at least one cavity and the hollow handle are made of a contiguous material and the at least one cavity includes an opening. A heavy fill material is placed inside the container through the opening in the at least one cavity, passes through the at least one cavity, fills the hollow handle and fills the at least one cavity. The container includes a first hollow flared portion that couples a first end of the hollow handle to the at least one cavity. The first hollow flared portion has a first open area located at an intersection of the at least one cavity and the first hollow flared portion and is greater than a second open area located at the first end of the hollow handle.
A method of assembling a free weight, the method includes obtaining a container made of a contiguous material and including at least one cavity. A heavy curable fill material is poured through an opening in the container so that the heavy curable fill material is located inside an entirety of the at least one cavity. The heavy curable fill material is cured inside the container and becomes non-removable from the container.
This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. The claimed subject matter is not limited to implementations that solve any or all disadvantages noted in the background.
When purchasing free weights online, product and shipping costs are high due to the materials of the product and the weight of the product causing oversize charges. Described below are user-assembled free weights that include empty containers shaped as dumbbells, kettlebells or weight plates or the like and are fillable, by the user at home, with a heavy fill or heavy curing materials, such as concrete, to function as dumbbells, kettlebells or weight plates. These user-assembled frees weight can be used in the comfort of the user's own home and at a fraction of the cost of free weights on the market.
In one embodiment, container 102 may be made of an opaque material, transparent material or have some degree of transparency. Material made of a transparent or some degree of transparency allows the user to visually see fill 104 moving down container or mold 102 during the fill or pour to ensure there are no air pockets. The user can either shake the container while it is filling to ensure no air spaces or use a tool, such as an elongated stick. For example, container 102 may be made of a plastic including a thermoplastic such as high-density polyethylene (HDPE), acrylonitrile butadiene styrene (ABS), polycarbonate (PC) or low-density polyethylene (LDPE). Not only are these exemplary materials crack and scratch resistant, these exemplary materials will protect fill 104 as well as the floor in the event a dumbbell is dropped. Regardless, the material of container 102 is thick enough to provide extra support for all corners of the container or mold when filled with fill 104.
Each cavity 106 and 108 includes a length 112, a width 114 and a height 115. Width 114 is greater than height 115 and width 114 and height 115 are greater than length 112. Under one embodiment, length 112 may be approximately 5.32 inches, width 114 may be approximately 8.13 inches and height 115 may be approximately 7.20 inches. An end 107 of first cavity 106 includes an opening 132. Opening 132 in
Opening 132 should not be wider than width 114 and height 115 of cavity 106 and may be configured to receive a cap or lid so that after fill 104 is cured or dried, the non-removable fill is hidden or protected from environmental exposure. In other embodiments, the cap or lid is configured to retain removable fill, such as granulated material or liquid material, inside container 104. Under one embodiment, opening 132 includes a diameter 134. Diameter 134 may be approximately 3.96 inches. Surrounding opening 132 is a lip 136 that protrudes from end 107 of cavity 106 by a length 137. The protrusion of lip 136 may be curved or straight, but should include an angle so that if fill 104 does crack, cracked pieces do not come out of opening 132. As illustrated in
Between hollow handle 110 and first cavity 106 is a first hollow flared portion 118. In one embodiment, first hollow flared portion 118 is a circular flare that couples a first end 111 of hollow handle 110 having diameter 122 to first cavity 106. First hollow flared portion 118 includes a first open area located at an intersection 119 between first cavity 106 and first hollow flared portion 118 and a second open area located at first end 111 of hollow handle 110. The first open area is calculated by finding the product of πr2 where r is the radius of the circular opening of first hollow flared portion 118 at first cavity 106 and second open area is calculated by finding the product of πr2 where r is the internal radius of hollow handle 110. As illustrated, first open area is greater than second open area. Sides of first hollow flared portion 118 include a straight taper or straight flare. It should be realized that curved flares are also possible. Sides of first hollow flared portion 118 are defined by an angle 130 measured with respect to end 107 of first cavity 106. Generally, angle 130 can range from 20 to 60 degrees including 30 degrees (as illustrated). However other angles are possible as long as there is a transitional angle from hollow handle 110 to cavity 106 that is less than 90 degrees. As also illustrated, a wall 117 of cavity 106 that opposes end 107 and couples side walls of cavity 106 with first hollow flared portion 118 is angled by an angle 131 with respect to end 107 of first cavity 106. Generally, angle 131 can range from 0 to 60 degrees including 5 degrees (as illustrated). However other angles are possible as long as wall 117 provides a transitional angle from first hollow flared portion 118 into first cavity 106 that is less than 90 degrees.
Between hollow handle 110 and second cavity 108 is a second hollow flared portion 120. In one embodiment, second hollow flared portion 120 is a circular flare that couples a second end 113 of hollow handle 110 having diameter 122 to second cavity 106. Second hollow flared portion 120 includes a third open area located at an intersection 123 between second cavity 108 and second hollow flared portion 120 and a fourth open area located at second end 113 of hollow handle 110. The third open area is calculated by finding the product of πr2 where r is the radius of the circular opening of second hollow flared portion 120 at second cavity 108 and fourth open area is calculated by finding the product of πr2 where r is the internal radius of hollow handle 110. As illustrated, third open area is greater than fourth open area. Sides of second hollow flared portion 120 include a straight taper or straight flare. It should be realized that curved flares are also possible. Sides of first hollow flared portion 120 are defined by angle 130 measured with respect to end 109 of second cavity 108. Generally, angle 130 can range from 20 to 60 degrees including 30 degrees (as illustrated). However other angles are possible as long as there is a transitional angle from hollow handle 110 to cavity 108 that is less than 90 degrees. As also illustrated, a wall 121 of cavity 108 that opposes end 109 and couples side walls of cavity 108 with second hollow flared portion 120 is angled by angle 131 with respect to end 109 of second cavity 108. Generally, angle 131 can range from 0 to 60 degrees including 5 degrees (as illustrated). However other angles are possible as long as wall 121 provides a transitional angle from second hollow flared portion 120 into second cavity 108 that is less than 90 degrees.
First hollow flared portion 118 connects hollow handle 110 to first cavity 106 and second hollow flared portion 120 connects hollow handle 110 to second cavity 108. All flared portions 118 and 120 create a secure bond for fill 104 to run into and out of hollow handle 110, to reduce pressure on the middle of handle 110 caused by fill 104 in cavities 106 and 108 and to act like a funnel in guiding fill 104 throughout the hollow interior of container 102.
In one embodiment, container 202 may be made of an opaque material, transparent material or have some degree of transparency. A transparent material will allow a user to visually see fill 204 in container or mold 202 during the fill or pour to ensure there are no air pockets. The user can either shake the container while it is filling to ensure no air spaces or use a tool, such as an elongated stick. For example, container 202 may be made of a transparent plastic including a thermoplastic such as high-density polyethylene (HDPE), acrylonitrile butadiene styrene (ABS), polycarbonate (PC) or low-density polyethylene (LDPE). Not only are these exemplary materials transparent and crack and scratch resistant, these exemplary materials will protect fill 204 as well as the floor in the event a kettlebell is dropped. Regardless, the material of container 202 is thick enough to provide extra support for all corners of the container or mold when filled with fill 204.
An end 207 of main cavity 206, which is also a bottom end of kettlebell 200, includes an opening 232. Opening 232 in
Opening 232 should not be wider than width 214 and height 215 of cavity 206 and may be configured to receive a cap or lid so that after fill 204 is cured or dried, the non-removable fill is hidden or protected from environmental exposure. In other embodiments, the cap or lid is configured to retain removable fill, such as granulated material or liquid material, inside container 204. Under one embodiment, opening 232 includes a diameter 234. Surrounding opening 232 is a lip 236 that protrudes from end 207 of cavity 206 by a length 237. The protrusion of lip 236 may be curved or straight, but should include an angle so that if fill 204 does crack, cracked pieces do not come out of opening 232. As illustrated in
Hollow handle 210 is coupled to main cavity 206 by first and second flared portions 218 and 220. In one embodiment, first and second flared portions 218 and 220 are elliptical lofted paths necking from main cavity 206 to circular hollow handle 210 as shown in detail in the phantom view of container 202 in
Between a second end 213 of hollow handle 210 and main cavity 206 is a second hollow flared portion 220. Second hollow flared portion 220 includes a third open area located at an intersection 223 between cavity 206 and second hollow flared portion 220 and a fourth open area located at second end 213 of hollow handle 210. As illustrated, the third open area of second hollow flared portion 220 is greater than the fourth open area of second hollow flared portion 220.
First and second flared portions 218 and 220 couple hollow handle 210 to main cavity 206 to create a more secure bond for fill 204 to run into hollow handle 210, to reduce pressure to allow fill 204 to flow from opening 232 through main cavity 206 to handle 210 easier and well as to create more strength for the corners once fill 204 has cured or dried.
In one embodiment, container 302 may be made of an opaque material, transparent material or have some degree of transparency. Material made of a transparent or some degree of transparency allows the user to visually see fill 304 moving down container or mold 302 during the fill or pour to ensure there are no air pockets. The user can either shake the container while it is filling to ensure no air spaces or use a tool, such as an elongated stick. For example, container 302 may be made of a plastic including a thermoplastic such as high-density polyethylene (HDPE), acrylonitrile butadiene styrene (ABS), polycarbonate (PC) or low-density polyethylene (LDPE). Not only are these exemplary materials crack and scratch resistant, these exemplary materials will protect fill 304 as well as the floor in the event a dumbbell is dropped. Regardless, the material of container 302 is thick enough to provide extra support for all corners of the container or mold when filled with fill 304.
Free weight 300 is in the three-dimensional shape of a polyhedron having a plurality of polygonal faces. In one embodiment and as illustrated in
The walls of cavity 306 are formed so that through a center of container 302 and extending from a first rectangular side 360 to an opposing second rectangular side 362 and spaced apart from ends 307 and 309 is an access slot 364 for accessing outer surface 316 of handle 310. Access slot 364 is defined by a plurality of slot walls of cavity 306. First and second lengthwise slot walls 366 and 368 face each other and extend lengthwise along a portion of length 312 of first and second rectangular sides 362 and 364 and for an entirety of height 315 of octagonal ends 307 and 309 of container 302 between first rectangular side 360 and opposing second rectangular side 362. Third and fourth widthwise slot walls 370 and 372 face each other and extend widthwise for an entirety of width 325 of first rectangular side 360 and opposing second rectangular side 362 and for an entirety of height 315 of octagonal ends 307 and 309 of container 302 between first rectangular side 360 and opposing second rectangular side 362. Therefore, cavity 306 is not only defined by external walls including rectangular sides (such as 360 and 362) of container 302 and octagonal ends 307 and 309, but cavity 306 is also defined by slot walls including first and second slot walls 366 and 368 and third and fourth slot walls 370 and 372.
End 307 of cavity 306 includes an opening 332. Opening 332 in
Opening 332 should not be wider than depth 314 and height 315 of end 307 and may be configured to receive a cap or lid so that after fill 304 is cured or dried, the non-removable fill is hidden or protected from environmental exposure. In other embodiments, the cap or lid is configured to retain removable fill, such as granulated material or liquid material, inside container 304. Under one embodiment, opening 332 includes a diameter 334. Diameter may be approximately 3.5 inches. Surrounding opening 332 is a lip 336 that protrudes from end 307 by a length 337. The protrusion of lip 336 may be curved or straight, but should include an angle so that if fill 304 does crack, cracked pieces do not come out of opening 332. As illustrated in
A first end 311 of hollow handle is coupled to cavity 306 through third slot wall 370 and a second end 313 of hollow handle 310 is coupled to cavity 306 through fourth slot wall 372. This means that when fill 304 is being poured into opening 332, fill 304 moves throughout cavity 306 including through hollow handle 310. Between first end 311 of hollow handle 110 and third slot wall 370 is a first hollow flared portion 318. In one embodiment, first hollow flared portion 318 is a circular flare that couples first end 311 of hollow handle 310 to cavity 306. First hollow flared portion 318 includes a first open area located at an intersection 319 between cavity 306 and first hollow flared portion 318 and a second open area located at first end 311 of hollow handle 310. The first open area is calculated by finding the product of πr2 where r is the radius of the circular opening of first hollow flared portion 318 at first cavity 306 and second open area is calculated by finding the product of πr2 where r is the internal radius of hollow handle 310. As illustrated, first open area is greater than second open area. Sides of first hollow flared portion 318 include a curved taper or curved flare. It should be realized that a straight flare is also possible.
Between second end 313 of hollow handle 310 and fourth slot wall 372 is a second hollow flared portion 320. In one embodiment, second flared portion 320 is a circular flare that couples second end 313 of hollow handle 310 to cavity 306. Second hollow flared portion 320 includes a third open area located at an intersection 323 between cavity 306 and second hollow flared portion 320 and a fourth open area located at second end 313 of hollow handle 310. The third open area is calculated by finding the product of πr2 where r is the radius of the circular opening of second hollow flared portion 320 at cavity 306 and fourth open area is calculated by finding the product of πr2 where r is the internal radius of hollow handle 310. As illustrated, third open area is greater than fourth open area. Sides of second hollow flared portion 318 include a curved taper or curved flare. It should be realized that a straight flare is also possible.
Flared portions 318 and 320 create a secure bond for fill 304 to run into and out of hollow handle 310, to reduce pressure on the middle of handle 310 caused by fill 304 in cavity 306 and to act like a funnel in guiding fill 304 throughout the hollow interior of container 302.
As illustrated in
In one embodiment, container 402 may be made of a plastic material including a thermoplastic such as high-density polyethylene (HDPE), acrylonitrile butadiene styrene (ABS), polycarbonate (PC) or low-density polyethylene (LDPE). Not only are these exemplary materials crack and scratch resistant, these exemplary materials will protect fill 404 as well as the floor in the event a weight plate is dropped. Regardless, the material of container 402 is thick enough to provide extra support for all corners of the container or mold when filled with fill 404.
The walls of container 402 are formed so that through a center of container 402 and extending from second end 409 towards opposing first end 407 includes a slot having a slot wall 464. The slot having slot wall 464 is formed through a center of container 402 and extends into cavity 406. Slot wall 464 is circular and has a diameter or width 465 and a height 467. However, it should be realized that other shapes are possible. Diameter or width 465 of slot wall 464 is less than diameter or width 412 of the entirety of container 402. Height 467 of slot wall 464 may be less than height 415 of container 402. Therefore, cavity 406, configured to receive fill 404, is not only defined by external walls including curved surface 460 located between first end 407 and second end 409, but cavity 406 is also defined by slot wall 464.
First end 407 includes an opening 432. Opening 432 is illustrated as being circular or round. However, other shapes are possible including rectilinear, non-rectilinear and oval shapes as long as opening 432 is wide enough to fit most curing material tools, such as a concrete trowel, and to allow for easy transfer of fill into the inside of container or mold 402 through opening 432. Opening 432 should not be wider than width or diameter 412, should allow for the filling of the volume of cavity 406 and may be configured to receive a cap or lid so that after fill 404 is cured or dried, the non-removable fill is hidden or protected from environmental exposure. In other embodiments, the cap or lid is configured to retain removable fill, such as granulated material or liquid material, inside container 304.
Under one embodiment, opening 432 includes a diameter 434. Diameter 434 is less than diameter 412, which provides end 407 with a lip around the periphery of fill 404 when container 402 is filled with fill 404. The lip goes around fill 404 at first end 407 so as to keep fill 404 secure in container 402. While fill 404 is being filled into cavity 406 of container 402, fitting 401 is inserted into the slot defined by slot wall 464. In
Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention.
Claims
1. A user-assembled free weight comprising:
- a container made of a contiguous material and having at least one cavity; and
- a heavy curable fill material placed inside the container including inside the at least one cavity; and
- wherein together the heavy curable fill material and the container produce at least a target weight and the heavy curable fill material is non-removable from the container.
2. The user-assembled free weight of claim 1, wherein the container further comprises a hollow handle coupled to the at least one cavity and made of the contiguous material, wherein the user-assembled free weight comprises a kettlebell where the at least one cavity includes a single cavity and the hollow handle is located above the single cavity.
3. The user-assembled free weight of claim 2, where the container further comprises a hollow first flared portion that couples a first end of the hollow handle to the single cavity and a hollow second flared portion that couples a second end of the hollow handle to the single cavity, wherein a first open area located at an intersection between the single cavity and the first hollow flared portion is greater than a second open area located at the first end of the hollow handle and wherein a third open area located at an intersection between the single cavity and the second hollow flared portion is greater than a fourth open area located at the second end of the hollow handle.
4. The user-assembled free weight of claim 1, wherein the container further comprises a hollow handle coupled to the at least one cavity and made of the contiguous material, wherein the user-assembled free weight comprises a dumbbell where the at least one cavity includes a first cavity separated from a second cavity and the hollow handle couples the first cavity to the second cavity.
5. The user-assembled free weight of claim 4, wherein the container further comprises a first hollow flared portion that couples a first end of the hollow handle to the first cavity and a second hollow flared portion that couples a second end of the hollow handle to the second cavity, wherein a first open area located at an intersection between the first cavity and the first hollow flared portion is greater than a second open area located at the first end of the hollow handle and wherein a third open area located at an intersection between the second cavity and the second hollow flared portion is greater than a fourth open area located at the second end of the hollow handle.
6. The user-assembled free weight of claim 1, wherein the container further comprises a hollow handle coupled to the at least one cavity and made of the contiguous material, wherein the user-assembled free weight comprises a dumbbell where the at least one cavity includes a single cavity that includes cavity walls that define an access slot that extends from a first side to an opposing second side of the container, the access slot being defined by a plurality of slot walls that also define the cavity walls, wherein the hollow handle is interposed between a first slot wall and an opposing second slot wall.
7. The user-assembled free weight of claim 6, where the container further comprises a hollow first flared portion that couples a first end of the hollow handle to the single cavity at the first slot wall and a second hollow flared portion that couples a second end of the hollow handle to the single cavity at the second slot wall, wherein a first open area located at an intersection wen the first slot wall of the single cavity is greater than a second open area located at the first end of the hollow handle and wherein a third open area located at an intersection between the second slot wall of the single cavity and the second hollow flared portion is greater than a fourth open area located at the second end of the hollow handle.
8. The user-assembled free weight of claim 1, wherein the container comprises an end having an opening surrounded by a lip, the opening being configured to receive the heavy curable fill material to be located inside the container.
9. The user-assembled free weight of claim 4, wherein an outer surface of the hollow handle includes a contiguous grip texture.
10. A user-assembled free weight comprising:
- a container having at least one cavity coupled to a hollow handle, wherein the at least one cavity and the hollow handle are made of a contiguous material and the at least one cavity includes an opening; and
- a heavy fill material placed inside the container through the opening in the at least one cavity, passes e through the at least one cavity, fills the hollow handle and fills the at least one cavity;
- wherein the container includes a first hollow flared portion that couples a first end of the hollow handle to the at least one cavity, the first hollow flared portion having a first open area located at an intersection of the at least one cavity and the first hollow flared portion and is greater than a second open area located at the first end of the hollow handle.
11. The user-assembled free weight of claim 10, wherein the container further comprises a second hollow flared portion that couples a second end of the hollow handle to the at least one cavity, the second hollow flared portion having a third open area located at an intersection between the at least one cavity and the second hollow flared portion is greater than a fourth open area located at the second end of the hollow handle.
12. The user-assembled free weight of claim 11, wherein the user-assembled free weight comprises a kettlebell where the at least one cavity includes a single cavity and the first flared portion couples the single cavity to the first end of the hollow handle and the second flared portion couples the single cavity to the second end of the hollow handle, wherein the hollow handle is spaced above the single cavity.
13. The user assembled free weight of claim 12, wherein the container further comprises an opening in a bottom end of the single cavity configured to receive the heavy fill.
14. The user-assembled free weight of claim 11, wherein the user-assembled free weight comprises a dumbbell where the at least one cavity includes a first cavity and a second cavity and the first hollow flared portion couples the first cavity to the first end of the hollow handle and the second hollow flared portion couples the second cavity to the second end of the hollow handle, wherein the hollow handle is interposed between and couples the first cavity to the second cavity.
15. The user-assembled free weight of claim 14, wherein the container further comprises an opening in an end of the first cavity configured to receive the heavy fill.
16. The user-assembled free weight of claim 11, wherein the user-assembled free weight comprises a dumbbell where the at least one cavity includes a single cavity and the first hollow flared portion couples the single cavity to the first end of the hollow handle and the second hollow flared portion couples the single cavity to the second end of the hollow handle, wherein the hollow handle is interposed between a first slot wall and a second slot wall of the container.
17. The user-assembled free weight of claim 16, wherein the container further comprises an opening in an end of the single cavity configured to receive the heavy fill.
18. A method of assembling a free weight, the method comprising:
- obtaining a container made of a contiguous material and including at least one cavity; and
- pouring a heavy curable fill material through an opening in the container so that the heavy curable fill material is located inside an entirety of the at least one cavity;
- waiting for the heavy curable fill material to cure inside the container and become non-removable from the container.
19. The method of claim 18, wherein the container further includes a hollow handle coupled to the at least one cavity and made of the contiguous material.
20. The method of claim 19, further comprising inserting at least one rebar core inside the container so that it extends in the at least one cavity and through the hollow handle.
Type: Application
Filed: Oct 7, 2021
Publication Date: Apr 14, 2022
Inventors: Jordan Leigh Flom (Knoxville, TN), David Glover (Eagan, MN)
Application Number: 17/496,176