Land vehicles – Skates – Wheeled skate
Patent
1996-07-22
1998-08-25
Johnson, Brian L.
Land vehicles
Skates
Wheeled skate
280 1127, 280 717, 36115, A63C 1720
Patent
active
057976090
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a shoe with retractable rollers, as well as to a shoe sole comprising retractable rollers.
DESCRIPTION OF THE RELATED ART
The document GB-334 782 discloses a roller skate, in which the wheels are mounted on a hollow body in the form of a cradle. The hollow body in the form of a cradle is mounted oscillably by means of a rod connection between two end positions in one of which the wheels support the body in the form of a cradle whilst in the other end position, the body in the form of a cradle rests on the ground. This arrangement of roller skate requires the use of a complicated mechanical rod system and mechanical locking means which substantially raise the feet of the user into an uncomfortable position.
U.S. Pat. No. 3,884,485 relates to a retractable roller skate comprising a body adapted to be secured to a shoe, a plurality of rollers carried rotatably on retraction means and lodged in said body. The retraction means serve to displace said rollers into one of two distinct positions: in one position, the rollers are completely disposed within the body and, in the other separate position they extend at least partially beyond said body. The retraction means comprise pivoting levers lockable by means of a manual control button with spring return. Although this device is simpler than the device described in GB-334 782, it requires the use of mechanical means rendering impossible the integration of the roller skate platform to a shoe sole.
U.S. Pat. No. 3,979,842 discloses an exercise device comprising a shoe. This device comprises a thick sole in the interior of which levers urged by springs are mounted pivotally at one end whilst at their other end they bear a roller. Because the thick sole receives large mechanical forces transmitted by the pivots of the levers and also comprises the end abutment for the two positions of said levers, it is necessary to construct the thick sole of a relatively rigid material, such as a plastic material reinforced with glass fiber. The use of such a shoe with a rigid sole rapidly becomes uncomfortable and gives rise to excessive fatigue for the user.
U.S. Pat. No. 3,983,643 discloses a shoe usable for walking and roller skating.
This device is analogous to the preceding one in that it provides levers pivoting about fixed axles bearing the rollers disposed in a relatively thick and rigid shoe sole.
U.S. Pat. No. 4,333,249 discloses a device convertible for sport use. This device is a roller skate lockable between two positions by means of pivoting levers adapted to be locked between a retracted and a rolling position. This device is adapted to a shoe, but does not itself constitute a shoe adapted to the foot of a user.
The invention has for its object to provide a shoe comprising rollers retractable between two positions, not requiring the use of lever mechanisms of the prior art and permitting continuous use as roller skates and for walking in an ergonomic fashion not tiring to the user.
The invention has for its object a shoe with rollers, of the type comprising at least one front roller and at least one rear roller; the front and rear rollers being displaceable between a first position of contact with the ground and a second raised position, characterized in that the front and rear rollers are interconnected by at least one flexible link passing within the sole, so as to displace simultaneously the front and rear rollers with the aid of traction means connected to said flexible link.
SUMMARY OF THE INVENTION
According to other characteristics of the invention, extending beyond the shoe comprises a gripping means of the handle or pull-knob type; internal recess of the sole; each of said two positions of contact with the ground and raised; to slide along guide tracks secured to the sole; mounted fixedly to a rear axle, the axles are interconnected by at least one flexible link.
The invention also has for its object a shoe sole adapted to form or forming a body with a shoe of known type, provided with front
REFERENCES:
patent: 1154370 (1915-09-01), Burke
patent: 2095942 (1937-10-01), Wetterstrand
patent: 3884485 (1975-05-01), Walle
patent: 3979842 (1976-09-01), Texidor
patent: 3983643 (1976-10-01), Schreyer et al.
patent: 5398970 (1995-03-01), Tucky
Allouche Claude
Amar Daniel
Fichepain Frederic
Johnson Brian L.
Yu Min
LandOfFree
Shoe with retractable rollers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Shoe with retractable rollers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shoe with retractable rollers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-31254