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US 3,983,643 AGranted
Shoe usable for walking and roller-skating
OwnerWalter Schreyer, Leo Gumbillerinventors
Life of this patent
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Abstract
A shoe usable for walking or roller skating is disclosed wherein the roller skating means is contained within the sole of the shoe. The skating means is selectively engageable so that the shoe can be used with little effort for either mode of transportation.
Claims8
A roller- and walking-shoe comprising:
- a sole enlarged in thickness defining a cavity;
- and
- a roller mechanism mounted in said cavity, said roller mechanism comprising:
- a plurality of rollers mounted on axles, a mounting means connecting said axles with said sole such that said rollers can selectively extend downwardly below said sole or be retained within said sole, a locking means to hold said mounting means in position when said rollers are extended, and at least one spring connected between said mounting means and said sole to pull and retain said mounting means into said cavity.
1 more element
Dependencies are inferred from the claim text.