# US 12,005,292 B1 · Barbell adapter with linkage connectors > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,005,292 B1 - Document ID: US12005292B1 - Status: Granted - Kind: B1 - Application number: 17/943,017 - Filed: 2022-09-12 - Granted: 2024-06-11 - Earliest claimed: 2021-09-10 - Applicants: Alfred Sidney Smith, Jr. - Inventors: Alfred Sidney Smith, Jr. - Web page: https://patentgrep.com/patent/US12005292B1 ## CPC - A63B 21/0724: {Bar-bells; Hand bars} - A63B 21/4035: {for operation by hand} - A63B 21/0728: {with means for fixing weights on bars, i.e. fixing olympic discs or bumper plates on bar-bells or dumb-bells} - A63B 2225/09: Adjustable dimensions - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract A rigid adapter for use with a barbell and one or more linkages that each have a first end and a second end, such as chains, elastomeric straps, safety looped nylon straps, or the like. The adapter includes a split collar that has an aperture therethrough adapted to receive the barbell, and two halves that each have a threaded aperture. One or more connection bolts are adapted to engage the threaded aperture of one of the halves of the split collar and include a linkage connection adapted for connecting with one of the linkages. Such a connection bolt may be an eye bolt, a J-shaped hook, a rectangular shaped hook, or the like. A resistance band buckle is fixed with the split collar and terminate at a resistance band connector. A spin collar can be used to allow the split collar to rotate on the barbell. ## Claims ### Claim 1 An adapter for use with a barbell having two or more weights mounted thereto, and for use with one or more linkages each having a first end and a second end, the adapter comprising: a split collar having an aperture therethrough adapted to receive the barbell therewithin, the split collar including a first half having one half of the aperture on an inside surface and two ends each having a fastening aperture therethrough, the split collar including a second half having an opposing half of the aperture on an inside surface and two ends each having a threaded recess, the two halves when brought together around the barbell being tightened to the barbell with two threaded bolts that traverse the fastening apertures on each end of the first half to engage the threaded recesses of the second half, each half of the split collar having a threaded aperture traversing from an outside surface to the inside surface; one or more connection bolts each having at a first end a threaded shaft adapted to engage the threaded aperture of one of the halves of the split collar, and at a second end a linkage connection adapted for connecting with either of the first end or the second end of one of the linkages; whereby with the split collar fastened around the barbell, and with the linkage connection of the connection bolt connected with either the first end or the second end of the linkage, the barbell can be used for exercising with the linkage adding additional resistance to the exercises. ### Claim 2 (depends on 1) The adapter of claim 1 wherein the first half of the split collar and the second half of the split collar are identical. ### Claim 3 (depends on 1) The adapter of claim 1 wherein the connection bolt is adapted to traverse the threaded aperture of either half of the split collar to tighten against the barbell. ### Claim 4 (depends on 1) The adapter of claim 1 wherein at least one of the connection bolts is an eye bolt. ### Claim 5 (depends on 1) The adapter of claim 1 wherein at least one of the connection bolts includes a J-shaped hook. ### Claim 6 (depends on 1) The adapter of claim 1 wherein at least one of the connection bolts includes a rectangular shaped hook. ### Claim 7 (depends on 1) The adapter of claim 1 further including a resistance band buckle that is adapted to be fixed with one of the halves of the split collar with one or more mechanical fasteners at a top end thereof, and terminating at a resistance band connector at a bottom end thereof. ### Claim 8 (depends on 1) The adapter of claim 1 further including a spin collar adapted for fixing with the barbell, the spin collar including an annular groove around which the split collar is fastened, the diameter of the aperture of the split collar being larger than a diameter of the annular groove, such that with the two halves of the split collar fastened together, the split collar is free to rotate within the trench of the spin collar. ### Claim 9 An adapter for use with a barbell having two or more weights mounted thereto, the adapter comprising: one or more linkages each having a first end and a second end; a split collar having an aperture therethrough adapted to receive the barbell therewithin, the split collar including a first half having one half of the aperture on an inside surface and two ends each having a fastening aperture therethrough, the split collar including a second half having an opposing half of the aperture on an inside surface and two ends each having a threaded recess, the two halves when brought together around the barbell being tightened to the barbell with two threaded bolts that traverse the fastening apertures on each end of the first half to engage the threaded recesses of the second half, each half of the split collar having a threaded aperture traversing from an outside surface to the inside surface; one or more connection bolts each having at a first end a threaded shaft adapted to engage the threaded aperture of one of the halves of the split collar, and at a second end a linkage connection adapted for connecting with either of the first end or the second end of one of the linkages; whereby with the split collar fastened around the barbell, and with the linkage connection of the connection bolt connected with either the first end or the second end of the linkage, the barbell can be used for exercising with the linkage adding additional resistance to the exercises. ### Claim 10 (depends on 9) The adapter of claim 9 wherein the first half of the split collar and the second half of the split collar are identical. ### Claim 11 (depends on 9) The adapter of claim 9 wherein the connection bolt is adapted to traverse the threaded aperture of either half of the split collar to tighten against the barbell. ### Claim 12 (depends on 9) The adapter of claim 9 wherein at least one of the connection bolts is an eye bolt. ### Claim 13 (depends on 9) The adapter of claim 9 wherein at least one of the connection bolts includes a J-shaped hook. ### Claim 14 (depends on 9) The adapter of claim 9 wherein at least one of the connection bolts includes a rectangular shaped hook. ### Claim 15 (depends on 9) The adapter of claim 9 further including a resistance band buckle that is adapted to be fixed with one of the halves of the split collar with one or more mechanical fasteners at a top end thereof, and terminating at a resistance band connector at a bottom end thereof. ### Claim 16 (depends on 9) The adapter of claim 9 further including a spin collar adapted for fixing with the barbell, the spin collar including an annular groove around which the split collar is fastened, the diameter of the aperture of the split collar being larger than a diameter of the annular groove, such that with the two halves of the split collar fastened together, the split collar is free to rotate within the trench of the spin collar. ### Claim 17 (depends on 9) The adapter of claim 9 wherein at least one of the linkages includes a metallic chain. ### Claim 18 (depends on 9) The adapter of claim 9 wherein at least one of the linkages includes an elastomeric resistance band. ### Claim 19 (depends on 9) The adapter of claim 9 wherein at least one of the linkages includes an elastomeric resistance strap. ### Claim 20 (depends on 9) The adapter of claim 9 wherein at least one of the linkages includes a strap having a plurality of loops, whereby when connected between the split collar and a bar, the bar is able to hold up the barbell with the strap by fitting the bar through one of the plurality of loops of the strap.