US 12,491,427 B2
Twisting posture training aid for inertia throwing/striking sports involving rotation of torso axis and upper limbs
Chih Wei Wu, Las Vegas, NV (US)
Filed by Chih Wei Wu, Las Vegas, NV (US)
Filed on Jun. 1, 2023, as Appl. No. 18/204,883.
Claims priority of application No. 202310457306.9 (CN), filed on Apr. 25, 2023.
Prior Publication US 2024/0359080 A1, Oct. 31, 2024
Int. Cl. A63B 69/36 (2006.01); A63B 71/06 (2006.01)
CPC A63B 71/0622 (2013.01) [A63B 2071/0627 (2013.01); A63B 2071/0636 (2013.01); A63B 2071/0655 (2013.01); A63B 2208/0204 (2013.01); A63B 2220/13 (2013.01); A63B 2220/806 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A twisting posture training aid for inertia throwing/striking sports involving rotation of torso axis and upper limbs, configured to render a torso marker for an about-torso-axis twist state and an upper limb marker for a movement state of a user who is performing an inertia throwing/striking sport by twisting about the twist axis extending along the torso of the user and manipulating with an upper limb of the user, respectively, wherein the inertia throwing/striking sport refers to throwing/striking a sports equipment, which is subjected to a power exerted by the user against a throwing/striking spot due to the user's twisting about the torso axis and motion of the upper limb, away from the user following an inertia direction, the twisting posture training aid comprising:
at least one inertia-direction marker arrangement configured to calibrate a marker corresponding to the inertia direction on an operation plane spaced from the user's torso;
a torso twist optical pointing arrangement worn at the user's torso, comprising:
a banding arrangement configured to be securely bound to the torso of the user;
a first optical pointer configured to render, with directivity, the torso marker for the about-torso-axis twist state onto the operation plane; and
a first pivot configured to pivot-fit the first optical pointer to the banding arrangement with an adjustable angle such that when the user is postured at address leading up to performance of the inertia throwing/striking sport, a projection of a torso marker corresponding to the inertia direction is presented onto the operation plane;
and an upper limb motion optical pointing arrangement worn at the upper limb of the user, comprising:
a fastener arrangement configured to be securely bound to the upper limb of the user;
a second optical pointer configured to render, with directivity, twisting movement of the upper limb about the torso axis onto the operation plane; and
a second pivot configured to pivot-fit the second optical pointer to the fastener arrangement with an adjustable angle such that when the user is postured at address, a projection of an upper limb marker corresponding to the inertia direction is presented on the operation plane, wherein the first optical pointer comprises a first light emitting unit and a first optical unit disposed in front of the first light emitting unit, whereby a tangent optical marker vertical to a projection of the torso axis is projected onto the operation plane, the tangent optical marker being configured to mark twisting of the user's torso about the torso axis on the operation plane; and the second optical pointer comprises a second light emitting unit and a second optical unit disposed in front of the second light emitting unit, whereby a transverse optical marker is projected such that when the upper limb twists synchronously with the torso, the transverse optical marker is parallel to the tangent optical marker on the operation plane;
an optical signal sensing device configured to measure image data of the tangent optical marker and the transverse optical marker projected on the operation plane; and
an alarm device configured to emit an alarm when either of the tangent optical marker and the transverse optical marker deviates from the inertia-direction marker.