# US 2025/0082980 A1 · Adjustable dumbbell system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0082980 A1 - Document ID: US20250082980A1 - Status: Published application - Kind: A1 - Application number: 18/799,610 - Filed: 2024-08-09 - Published: 2025-03-13 - Earliest claimed: 2014-06-13 - Assignees: Johnson Health Tech Retail, Inc. - Applicants: Johnson Health Tech Retail, Inc. - Inventors: Thomas H. Moran; Jason P. Petersen; Marcus L. Marjama; Todd D. Anderson; PJ M. Bush; Bryan W. Hamilton; Edward L. Flick - Web page: https://patentgrep.com/patent/US20250082980A1 ## CPC - A63B 21/075: with variable weights {, e.g. weight systems with weight selecting means for bar-bells or dumb-bells} - 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 21/0728: {with means for fixing weights on bars, i.e. fixing olympic discs or bumper plates on bar-bells or dumb-bells} - A63B 71/0036: {Accessories for stowing, putting away or transporting exercise apparatus or sports equipment (A63B47/00, A63B55/00, A63B60/56 take precedence)} - A63B 71/0054: {Features for injury prevention on an apparatus, e.g. shock absorbers (mats or the like for absorbing shocks for jumping A63B6/00)} - A63B 2071/0625: {Emitting sound, noise or music} - A63B 2071/0655: {Tactile feedback} - A63B 2209/02: with reinforcing fibres, e.g. carbon, polyamide fibres - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract An adjustable dumbbell system may include a base, two or more weights, a handle assembly, an additional weight, and selection assembly. The two or more weights may be supported by the base and grouped into a first set of weights associated with one end of the dumbbell system and a second set of weights associated with an opposing end of the dumbbell system. The handle assembly may be selectively fixedly joined to the first and second set of weights. The additional weight may be disposed distally of the handle assembly. The selection assembly may be secured to the additional weight. The selection assembly may include a selection member that may be linearly moveable between a selected position where the additional weight is operatively secured to the handle assembly and an unselected position where the additional weight is disengaged from the handle assembly. ## Claims ### Claim 1 (canceled) ### Claim 2 An adjustable dumbbell comprising: a handle assembly comprising: a longitudinal axis; and a first disc and a second disc that rotate about the longitudinal axis for selectively coupling one or more of a plurality of weights to the handle assembly depending upon a rotational orientation of the discs; wherein the first disc comprises a first engagement feature, and the second disc comprises a second engagement feature; and wherein the first engagement feature with the second engagement feature fit together to configure the first and second discs to rotate in unison about the longitudinal axis. ### Claim 3 (depends on 2) The adjustable dumbbell of claim 2, wherein: the first disc comprises a first sleeve having the first engagement feature; and the second disc comprises a second sleeve having the second engagement feature. ### Claim 4 (depends on 3) The adjustable dumbbell of claim 3, wherein the first and second engagement features are defined on distal ends of the first and second sleeves, respectively. ### Claim 5 (depends on 2) The adjustable dumbbell of claim 2, wherein: the first engagement feature comprises at least one tab; and the second engagement feature comprise at least one indentation to receive the at least one tab. ### Claim 6 (depends on 5) The adjustable dumbbell of claim 5, wherein: the first disc comprises an axially extending sleeve; and the at least one tab extends radially from a distal end of the sleeve. ### Claim 7 (depends on 2) The adjustable dumbbell of claim 2, wherein faces of the first and second discs comprise weight selection features to engage the one or more of the plurality of weights. ### Claim 8 A handle assembly for an adjustable dumbbell system, the handle assembly comprising: a longitudinal axis; a first disc and a second disc, wherein the first and second discs rotate about the longitudinal axis for selectively coupling one or more of a plurality of weights to the handle assembly depending upon a rotational orientation of the discs; and a keyed engagement between the first disc and the second disc, wherein the keyed engagement configures the first and second discs to rotate in unison about the longitudinal axis. ### Claim 9 (depends on 8) The handle assembly of claim 8, wherein the keyed engagement comprises a first engagement feature defined on the first disc, and a second engagement feature defined on the second disc. ### Claim 10 (depends on 9) The handle assembly of claim 9, wherein the keyed engagement comprises a first sleeve of the first disc engaging a second sleeve of the second disc. ### Claim 11 (depends on 8) The handle assembly of claim 8, further comprising weight selection features defined on the first disc and the second disc, the weight selection features configured for selectively coupling the one or more of the plurality of weights to the handle assembly. ### Claim 12 (depends on 11) The handle assembly of claim 11, wherein the weight selection features comprise flanges protruding from the first and second discs. ### Claim 13 (depends on 12) The handle assembly of claim 12, wherein the flanges extend along an arcuate path. ### Claim 14 An adjustable dumbbell system comprising: a plurality of weights; a handle assembly comprising a longitudinal axis; a first disc comprising a first sleeve having a first engagement feature; and a second disc comprising a second sleeve having a second engagement feature corresponding to the first engagement feature; wherein the first and second discs rotate about the longitudinal axis for selectively coupling one or more of the plurality of weights to the handle assembly depending upon a rotational orientation of the discs; and wherein the first engagement feature is received in the second engagement feature to configure the first and second discs to rotate in unison about the longitudinal axis. ### Claim 15 (depends on 14) The adjustable dumbbell system of claim 14, wherein: the first disc extends distally from an outer surface of the first selector disc; and the second disc extends distally from an outer surface of the second selector disc. ### Claim 16 (depends on 14) The adjustable dumbbell system of claim 14, wherein the first sleeve and the second sleeve extend to axially separate the first disc from the second disc and form a space between the first and second discs, the space configured to receive the one or more weights. ### Claim 17 (depends on 14) The adjustable dumbbell system of claim 14, wherein the first and second engagement features comprise corresponding tabs and receiving indentations. ### Claim 18 (depends on 17) The adjustable dumbbell system of claim 17, wherein the corresponding tabs and receiving indentations are keyed so that the first and second discs are interconnected in only one rotational orientation. ### Claim 19 (depends on 14) The adjustable dumbbell system of claim 14, wherein: the first disc comprises: a first face and a second face opposite the first face; a first weight selection feature on the first face; and a second weight selection feature on the second face; the first and second weight selection features are configured to engage a respective one of a first and second weights from the plurality of weights for selectively coupling one or both of the first and second weights to the handle assembly. ### Claim 20 (depends on 19) The adjustable dumbbell system of claim 19, wherein one of the first and second weights is positioned between the first and second selector discs; and the second disc comprises a weight abutment feature abutting against a surface of the one of the first and second weights positioned between the first and second selector discs. ### Claim 21 (depends on 20) The adjustable dumbbell system of claim 20, wherein the weight abutment feature comprises an annular rim that is spaced radially outward of the second sleeve.