# US 10,478,658 B2 · Sports dumbbell

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- Number: US 10,478,658 B2
- Document ID: US10478658B2
- Status: Granted
- Kind: B2
- Application number: 15/500,592
- Filed: 2015-07-28
- Published: 2017-07-27
- Granted: 2019-11-19
- Earliest claimed: 2014-07-31
- Applicants: Christian Polenz
- Inventors: Christian Polenz
- Web page: https://patentgrep.com/patent/US10478658B2

## CPC

- 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 21/0552: {Elastic ropes or bands}
- A63B 21/0607: {Plastic masses, e.g. elastomers; Masses provided with plastic coverings}
- A63B 21/4013: {to the ankle}
- A63B 21/4034: {for operation by feet}
- A63B 21/4035: {for operation by hand}
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

A sports dumbbell comprises a grip section (2), which runs along a grip shaft (L1), and a support shaft (L2) of a support section (3) spaced apart from the grip section (2) perpendicular to and running parallel to the grip shaft (L1). The support section is connected at at least one end to the grip section (2). The sports dumbbell has a center of gravity (S) which is arranged within the support section (3). A distance (d2) between the grip shaft (L1) and the support shaft (L2) is at least 11 cm, and an external shape of the sports dumbbell forms a closed annular body or open annular body.

## Claims

### Claim 1

A sports dumbbell comprising:
a grip portion (2) running along a grip axis (L1);
a support portion (3) including a support axis (L2), wherein the support axis (L2) is spaced from the grip portion (2) and runs parallel to the grip axis (L1);
wherein along the support axis (L2) the support portion (3) has mutually opposing first and second ends and at least one of the first and second ends of the support portion (3) is connected to the grip portion (2), wherein a distance (d2) between the grip axis (L1) and the support axis (L2) is at least 11 cm, wherein an outer shape of the sports dumbbell is fixed and substantially U-shaped, and wherein the sports dumbbell has a center of gravity (S) located inside the support portion (3) such that the sports dumbbell can be used in a manner that no torque is provoked in a user's wrist or arm; and
an end of a length-adjustable strap (8) provided on each of a first and a second end of the grip portion, the length-adjustable strap configured to be held behind a heel of the user when a foot tip of the user is extended through a passage opening (7) formed between the grip portion (2) and the support portion (3) wherein the first and second ends of the grip portion (2) are mutually opposing along the grip axis (L1), the first end of the grip portion (2) is connected to the first end of the support portion (3) by a first connecting portion (4), and the second end of the grip portion (2) has no direct connection to the second end of the support portion (3).

### Claim 2 (depends on 1)

The sports dumbbell according to claim 1, wherein the distance (d2) between the grip axis (L1) and the support axis (L2) is between 11 cm and 13 cm.

### Claim 3 (depends on 1)

The sports dumbbell according to claim 1, wherein the support portion (3) has a maximum diameter (D2) between 8.5 cm and 12 cm, and a minimum diameter (D1) of the grip portion (2) is 3 cm.

### Claim 4 (depends on 1)

The sports dumbbell according to claim 1, wherein a maximum diameter (D2) of the support portion (3) is at most three times as large as a minimum diameter (D1) of the grip portion (2).

### Claim 5 (depends on 1)

The sports dumbbell according to claim 1, wherein the outer shape of the sports dumbbell (1) is formed by a plastic coating covering a complete surface of the sports dumbbell.

### Claim 6 (depends on 1)

The sports dumbbell according to claim 1, wherein the grip portion (2) has a thumb notch.