Shoe with retractable spike mechanism for canes and crutches

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United States of America Patent

PATENT NO 10064464
SERIAL NO

15596856

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A shoe for canes and crutches composing a cylindrical tubular member having an end mounted to the end of a shaft or crutch, and the other end having a central bore axially extending inwardly a defining a first bottom and coaxially disposed second bore having a smaller diameter than said first bore and extending a second predetermined distance defining a second bottom. A circular plate with a central through opening biased by a coil spring member coaxially disposed around a post. A cap member is sandwiched between a knob connected to the plate for rotating the latter and causing it to move along the post to engage the irregular through opening to a cutout in the post.

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International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Birnbaum, Bernardo Aventura, US 14 117

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