# US 12,370,397 B2 · Weight box for fitness equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,370,397 B2 - Document ID: US12370397B2 - Status: Granted - Kind: B2 - Application number: 18/400,024 - Filed: 2023-12-29 - Published: 2024-04-25 - Granted: 2025-07-29 - Earliest claimed: 2023-11-17 - Assignees: Shenzhen Shenlaiyibi Technology Co., Ltd. - Applicants: Shenzhen Shenlaiyibi Technology Co., Ltd. - Inventors: Longfei Wang - Web page: https://patentgrep.com/patent/US12370397B2 ## CPC - A63B 21/0605: {with boxes, baskets or the like for stacking loose weights therein} - A63B 21/0722: {transformable, e.g. from dumb-bell to bar-bell} - A63B 21/06: User-manipulated weights - A63B 21/072: Dumb-bells, bar-bells or the like {, e.g. weight discs having an integral peripheral handle} - A63B 21/0724: {Bar-bells; Hand bars} - A63B 21/0726: {Dumb bells, i.e. with a central bar to be held by a single hand, and with weights at the ends} - A63B 21/4035: {for operation by hand} - A63B 71/0036: {Accessories for stowing, putting away or transporting exercise apparatus or sports equipment (A63B47/00, A63B55/00, A63B60/56 take precedence)} - A63B 2210/50: Size reducing arrangements for stowing or transport - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract The present disclosure provides a weight box for fitness equipment, including a base, at least one weight plate, and a box body detachably connected to the base, wherein a cavity is formed between the box body and the base and configured for receiving the at least one weight plate. A first connection portion is arranged on the base of the weight box and configured to connect with a holding rod, so as to assemble the fitness equipment into a dumbbell or barbell. A second connection portion is provided on two opposite sides of the weight box and configured to connect with a lifter, so as to assemble the fitness equipment into a kettlebell or a spring exerciser. The weight box provided by the present disclosure can not only be used for various fitness equipment, but also be quickly assembled. ## Claims ### Claim 1 A weight box for fitness equipment, comprising: a base, at least one weight plate, a box body detachably connected to the base, wherein a cavity is formed between the box body and the base and configured for receiving the at least one weight plate, a fixing device connected to the at least one weight plate, wherein the at least one weight plate is arranged on the base by the fixing device, a first connection portion arranged on the base of the at least one weight box and configured for assembling the fitness equipment into a dumbbell or barbell, a holding rod connected with the first connection portion, a second connection portion arranged on two opposite sides of the box body and configured for assembling the fitness equipment into a kettlebell or a spring exerciser, and a lifter connected with the second connection portion. ### Claim 2 (depends on 1) The weight box for fitness equipment according to claim 1, wherein the fixing device comprises a threaded rod installed on a center of the base, and the weight plate is sleeved on the threaded rod and locked by a first screw nut. ### Claim 3 (depends on 2) The weight box for fitness equipment according to claim 2, wherein the base comprises: a bottom cover and a top cover detachably connected to the bottom cover, and a positioning plate arranged between the top cover and the bottom cover, the positioning plate being integrally connected with a lower end of the threaded rod, and the positioning plate and the threaded rod being fixed after the top cover and a bottom cover being assembled. ### Claim 4 (depends on 2) The weight box for fitness equipment according to claim 2, wherein an upper end of the threaded rod extends to an outer position of the box body, and a rotary knob is provided above the box body, the box body is connected to the base by tightening the rotary knob. ### Claim 5 (depends on 1) The weight box for fitness equipment according to claim 1, further comprising: a convex block configured to be arranged on a lower surface of the weight plate, the convex block projecting towards the base, and a recessed slot configured to be arranged on an upper surface of the weight plate, the recess slot recessing towards the base to match the convex block, wherein the convex block is inserted into the recessed slot to prevent relative rotations of two adjacent weight plates. ### Claim 6 (depends on 1) The weight box for fitness equipment according to claim 1, wherein the first connection portion is a threaded connection hole defined on a center of the base, and the holding rod is connected to the base through threaded connection. ### Claim 7 (depends on 6) The weight box for fitness equipment according to claim 6, wherein the holding rod comprises: an inner sleeve, two ends of the inner sleeve being provided with two polygonal pillars respectively, two convex rings being respectively provided on the two ends of the inner sleeve, and each of the two convex rings protruding outwardly, a groove defined between the two convex rings, a third screw nut, one end part of the third screw nut being provided with external threads connected to the threaded connection hole of the base, and a threaded hole radially positioned on the third screw nut. ### Claim 8 (depends on 7) The weight box for fitness equipment according to claim 7, wherein the holding rod comprises a screw joint casing connected with the third screw nut through threaded connection, and the screw joint casing is fixedly connected with an inner extension sleeve. ### Claim 9 (depends on 1) The weight box for fitness equipment according to claim 1, wherein the second connection portion are screw holes arranged on inner opposite sides of the box body, the lifter is installed in the screw hole by screwing. ### Claim 10 (depends on 1) The weight box for fitness equipment according to claim 1, wherein two installation slots are respectively arranged at two opposite sides of the box body, and the lifter is arranged in the installation slots. ### Claim 11 (depends on 1) The weight box for fitness equipment according to claim 1, wherein the lifter is a U-shaped handle or a pulling rope.