Patent Publication Number: US-6209888-B1

Title: Inline skates with two brakes used simultaneously

Description:
BACKGROUND OF THE INVENTION 
     This invention relates to a special kind of inline skates featuring extra efficient braking system. Such skates are a sports requsite. As far as is known the inline skates with similar characteristics have never been invented or made. 
     The object of this invention is to create a braking system for inline skates which makes it possible for two brakes to be used simultaneously. This invention is sharply contrasted to a single brake braking system with all its variations (see document U.S. Pat. No. 5,183,275) widely practiced today which is highly ineffective. Namely, it allows the skater to use one brake only ( during braking action) which causes the problem of balance. To solve the problem of balance, the skate mast use a brake up to 30-40% of its actual braking power. 
     By contrast our braking system by putting to work two brakes ( at the same time) eliminates the problem of balance and allows both brakes to be used up to 100% of their braking potential from the very beginning of the braking action. 
     SUMMARY OF THE INVENTION 
     The main characteristic of inline skates with two brakes to be used simultaneously according to the invention is that they allow the skater to use both brakes at the same time during braking action. This kind of performance is achieved by the specific construction of the frame, the main feature of which is the introduction of the mobile rear wheel working closely with the mobile braking wheel during braking action. The said wheels are made mobile throurgh their respective rotating carriers. A pair of rear wheel carriers rotate around cylinders incorporated in the frame while a pair of braking wheel carriers rotate around the ends of the same axle. The carriers of both said wheels are interlocked during skating through the notch ( on the end ) of braking wheel carrier clutching ( hooking ) the cylinder affixed to the rear wheel carrier. Once the braking action is over, both carriers are pushed back by their respective springs into their starting position to be interlocked eventually. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 Is a side view of the skate during skating 
     FIG. 2 Is a view from above of the braking wheel, and a pair of its carriers 
     FIG. 3 Is a view from behind of the rear wheel with a pair of its carriers 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     FIG. 1 Shows an inline skate with frame  1  affixed to the boot. First two front wheels  2 ,  3  positioned inline on the frame  1  are standard non fixed mobile wheels. They are followed by two rear (inline) mobile wheels  26 ,  4 . A rear wheel  4  and a braking wheel  5  make up the braking system to be explained in detail. 
     A first rear wheel carrier  7  is rotatingly mounted on a first cylinder  29  affixed to a frame  1  (FIGS.  1 , 3 ). The first spring holders  14  are affixed to the inside of the frame  1  and to a first rear wheel carrier  7  holding a pair of first springs  13  the purpose of which is to push back a first rear wheel carrier  7  (once braking is completed) to their starting position ( FIG.  1 ), till they touch a sixth cylinder  17  affixed to a frame  1  which limits their backward rotation. An axle  12  is affixed to a frame  1  through a pair of screws  24 , and has fixedly mounted hallow cylinder  21  on with its mid section  20  (FIG. 3 ) ( notch ) against which one end of a pair of third springs  19  rests. A notch  8  on one end of a braking wheel carrier  6  clutches a fourth cylinder  9  affixed to a first rear wheel carrier  7 , to keep a rear wheel  4  firmly in its working position during skating. On the rear end of the frame  1  there is a braking wheel carrier  6  rotatingly mounted on end of an axle  11  which is fixedly mounted on a frame  1  through a pair of screws  25 . 
     A pair of third springs  19  (FIG. 2) is mounted on an axle  11 , resting with one end against a notch  20  of a hollow cylinder  21  and with other end against third spring holders  15  affixed to a braking wheel carrier  6 . By pushing a braking wheel  5  to the ground (mounted on one end of a braking wheel carrier  6 ) a pair of third springs  19  help a first rear wheel carrier  7  and a braking wheel carrier  6  interlock once braking action is completed. A braking wheel  5  is rotatingly mounted on an axle  22  and constantly pinched with a pair of rubber cylinders through a screw  23  which regulates a braking force of each brake. A first rear wheel carrier  7  and a braking wheel carrier  6  are interlocked during skating (FIG. 1) through a notch  8  ( on a braking wheel carrier  6  ) clutching a fourth cylinder  9  affixed to a first rear wheel carrier  7 . 
     A third inline wheel  26  is mobile and is rotatingly mounted between a pair of its carriers  30  also rotatingly mounted on a second cylinder  28  affixed to a frame  1 . During skating a second rear wheel carrier  30  rests against a pair of seventh cylinders  31  affixed to a frame  1  due to an angle between the ground and a second rear wheel carrier  30 . Once braking is completed a pair of second springs  32  push back a second rear wheel carrier  30  till it touches a seventh cylinder  31  (FIG.  1 ). Second spring holders  33  affixed to the inside of frame  1  and a second rear wheel carrier  30  hold a pair of second springs  32 . How the braking system works? During skating (FIG. 1) a braking wheel  5  is above the ground and a first rear wheel carrier  7  and a braking wheel carrier  6  are interlocked through their respective parts, a fourth cylinder  9  and a notch  8 . A second rear wheel carrier  30  under the body weight of an angle between a second rear wheel carrier  30  and the surface rests against a seventh cylinder  31 . To engage the brakes the skater should lift the front wheels  2 ,  3  of both skates. As result, the braking wheels  5  touches the ground and their carriers  6  start to rotate around an axle  11  counter clockwise till the braking wheel carriers  6  touch fifth cylinders  10  affixed to a frame  1 . The said rotation of a braking wheel carrier  6  allows its notch  8  to release a fourth cylinder  9  of a first rear wheel carrier  7 . As result, under the body weight a first rear wheel carrier  7  starts to rotate clockwise around a first cylinder  29  while a first rear wheel  4  starts pushing a second rear wheel  26  also clockwise. During the braking action the skating is done on a front wheel  3  and a braking wheel  5  while the body weight is almost entirely on a braking wheel  5  because the mobile wheels  26 ,  4  get disengages rotatingly idly. Once braking is completed the skates get lifted ( one at the time) off the ground which causes second springs  32 , first springs  13  and third springs  19  to push their respective wheel carriers  30 , 7 , 6  into their working positions (FIG. 1) while first rear wheel carriers  7  and braking wheel carriers  6  get interlocket again as result.