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US 7,254,905 B2Granted
Releasable athletic shoe sole
OwnerJames M. Dennisoninventor
Life of this patent
Estimating the term…
Abstract
A unique athletic shoe sole that is constructed of two more separate pieces designed to release when a predetermined longitudinally directed force is applied. A releasable athletic shoe sole includes a detachable lower sole; a mechanical release mechanism constructed to release when a predetermined force is applied; and a longitudinal guiding element. The longitudinal guiding element allows the lower sole to detach specifically in a longitudinal direction. The longitudinal direction of release prevents knee ligament injuries, particularly ACL injuries.
Claims25
An athletic shoe comprising:
- a body portion;
- an upper sole element substantially permanently attached to said body portion;
- and
- a lower sole element releasably attached to said upper sole element such that lateral relative motion between said upper sole element and said lower sole element is prevented and longitudinal motion between said upper sole element and lower sole element is resisted up to a predetermined release force such that a predetermined release force in the longitudinal direction will cause the upper sole element to release from the lower sole element, and a force in the lateral direction will cause the upper sole element to release from the lower sole element, and a force in the lateral direction will not cause the upper sole element to release from the lower sole element, wherein said predetermined release force is designed to fail at a predetermined load or threshold force level to prevent knee injury to a wearer.
1 more element
An athletic shoe comprising:
- a body portion;
- an upper sole element substantially permanently attached to said body portion;
- and
- a lower sole element releasably attached to said upper sole element such that lateral relative motion between said upper sole element and said lower sole element is prevented and longitudinal motion between said upper sole element and lower sole element is resisted up to a predetermined release force such that a predetermined release force in the longitudinal direction will cause the upper sole element to release from the lower sole element, and a force in the lateral direction will not cause the upper sole element to release from the lower sole element wherein said predetermined release force is designed to fail at a predetermined load or threshold force level to prevent knee injury to a wearer.
1 more element
An athletic shoe sole comprising:
- an upper sole having a bottom surface including a first longitudinal guiding element;
- a lower sole having a top surface including a second longitudinal guiding element;
- said second longitudinal guiding element engaging said first longitudinal guiding element and constraining said upper sole to longitudinal motion relative to said lower sole upon exertion of a threshold longitudinal shear force therebetween a shear pin extending between said upper sole and said lower sole, wherein said shear pin is designed to fail at a predetermined load or threshold force level to release the lower sole from the upper sole to prevent knee injury to a wearer.
Dependencies are inferred from the claim text.