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US 8,523,211 B2Granted
Knee roller
OwnerClinton Allen Mailahninventor
Life of this patent
Estimating the term…
Abstract
A knee roller that is easy to use and provides improved maneuverability is disclosed. The knee roller may include a support frame for supporting a handlebar assembly, a knee support and a pair of coaxial wheels. The pair of coaxial wheels may be positioned substantially underneath the knee support, where the pair of coaxial wheels rotates about a common rotation axis, and a vertical plane defined by the rotation axis intersects the knee support. The position of the pair of coaxial wheels with respect to the knee support substantially distributes a weight received at the knee support over the pair of coaxial wheels and allows the knee roller to turn about a vertical axis perpendicular to and intersects with the rotation axis.
Claims18
A knee roller, comprising:
- a support frame;
- a handlebar assembly adjustably attached to the support frame, the handlebar assembly being non-pivotal relative to the support frame;
- a knee support adjustably attached to the support frame, the knee support configured for supporting a knee of a user;
- a pair of coaxial wheels attached to the support frame at a position below the knee support, where the pair of coaxial wheels rotates about a common rotation axis, and a vertical plane defined by the rotation axis intersects the knee support;
- a first auxiliary wheel positioned towards a front end of the support frame, the first auxiliary wheel configured to swivel based on a direction of travel of the knee roller when the first auxiliary wheel engages a ground surface;
- a second auxiliary wheel positioned towards a rear end of the support frame, the second auxiliary wheel configured to swivel based on the direction of travel of the knee roller when the second auxiliary wheel engages the ground surface;
- wherein a tangential plane formed by a point of contact of the first auxiliary wheel and points of contact of the pair of coaxial wheels is different from a tangential plane formed by a point of contact of the second auxiliary wheel and the points of contact of the pair of coaxial wheels, allowing the first and second auxiliary wheels to conditionally engage the ground surface;
- and
- wherein the position of the pair of coaxial wheels with respect to the knee support substantially distributes a weight received at the knee support over the pair of coaxial wheels and allows the knee roller to turn about a vertical axis perpendicular to and intersects with the rotation axis.
6 more elements
A knee roller, comprising:
- a support frame;
- a handlebar assembly adjustably attached to the support frame, the handlebar assembly being non-pivotal relative to the support frame;
- a knee support adjustably attached to the support frame, the knee support configured for supporting a knee of a user;
- a pair of coaxial wheels attached to the support frame at a position below the knee support, where the pair of coaxial wheels rotates about a common rotation axis, and a vertical plane defined by the rotation axis intersects the knee support;
- a first auxiliary wheel positioned towards a front end of the support frame, the first auxiliary wheel configured to swivel based on a direction of travel of the knee roller when the first auxiliary wheel engages a ground surface;
- and
- a second auxiliary wheel positioned towards a rear end of the support frame, the second auxiliary wheel configured to swivel based on the direction of travel of the knee roller when the second auxiliary wheel engages the ground surface;
- wherein the position of the pair of coaxial wheels with respect to the knee support positions the vertical plane defined by the rotation axis to generally coincide with a coronal plane of the user and allows the user to turn about a vertical axis formed by an intersection of the coronal plane of the user and a sagittal plane of the user;
- and
- wherein a tangential plane formed by a point of contact of the first auxiliary wheel and points of contact of the pair of coaxial wheels is different from a tangential plane formed by a point of contact of the second auxiliary wheel and the points of contact of the pair of coaxial wheels.
7 more elements
A knee roller, comprising:
- a support frame;
- a handlebar assembly adjustably attached to the support frame, the handlebar assembly being non-pivotal relative to the support frame;
- a knee support adjustably attached to the support frame, the knee support configured for supporting a knee of a user;
- a pair of coaxial wheels attached to the support frame at a position substantially underneath the knee support, where the pair of coaxial wheels rotates about a common rotation axis, and a vertical plane defined by the rotation axis intersects the knee support;
- a first auxiliary wheel positioned towards a front end of the support frame, the first auxiliary wheel configured to swivel based on a direction of travel of the knee roller when the first auxiliary wheel engages a ground surface;
- a second auxiliary wheel positioned towards a rear end of the support frame, the second auxiliary wheel configured to swivel based on the direction of travel of the knee roller when the second auxiliary wheel engages the ground surface;
- and
- a plurality of tilt prevention arms configured to establish contact with the ground surface when the knee roller is tilted sideways beyond an allowed limit;
- wherein a tangential plane formed by a point of contact of the first auxiliary wheel and points of contact of the pair of coaxial wheels is different from a tangential plane formed by a point of contact of the second auxiliary wheel and the points of contact of the pair of coaxial wheels, allowing the first and second auxiliary wheels to conditionally engage the ground surface;
- and
- wherein the position of the pair of coaxial wheels with respect to the knee support positions the vertical plane defined by the rotation axis to generally coincide with a coronal plane of the user, substantially distributes a weight received at the knee support over the pair of coaxial wheels, and allows the user to turn about a vertical axis formed by an intersection of the coronal plane of the user and a sagittal plane of the user.
8 more elements
Dependencies are inferred from the claim text.