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WO1997011758A1 - Patin a roues alignees equipe d'un systeme de freinage a bande de frein flexible - Google Patents

Patin a roues alignees equipe d'un systeme de freinage a bande de frein flexible Download PDF

Info

Publication number
WO1997011758A1
WO1997011758A1 PCT/CA1996/000642 CA9600642W WO9711758A1 WO 1997011758 A1 WO1997011758 A1 WO 1997011758A1 CA 9600642 W CA9600642 W CA 9600642W WO 9711758 A1 WO9711758 A1 WO 9711758A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake band
wheels
brake
roller skate
cuff
Prior art date
Application number
PCT/CA1996/000642
Other languages
English (en)
Inventor
Bernard Daoust
Original Assignee
Bauer Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bauer Inc. filed Critical Bauer Inc.
Priority to AU69823/96A priority Critical patent/AU6982396A/en
Publication of WO1997011758A1 publication Critical patent/WO1997011758A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/14—Roller skates; Skate-boards with brakes, e.g. toe stoppers, freewheel roller clutches
    • A63C17/1409—Roller skates; Skate-boards with brakes, e.g. toe stoppers, freewheel roller clutches contacting one or more of the wheels
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/04—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs
    • A63C17/06—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs single-track type
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/14—Roller skates; Skate-boards with brakes, e.g. toe stoppers, freewheel roller clutches
    • A63C2017/1481—Leg or ankle operated

Definitions

  • the present invention relates to a brake system for use on an in-line roller skate.
  • the brake system includes a brake band that engages the surface of at least one wheel when tensioned by movement of the cuff to generate contact friction.
  • the invention also extends to .roller skate provided with such brake system and to a novel frame for a roller skate featuring a guide member provided to increase the contact surface between the brake band and the surface of the wheels.
  • Brake systems for use with roller-skates particularly the in-line category of skates fall in two different classes.
  • the first class relates to static pads that are mounted either at the front or at the rear of the skate.
  • To reduce his speed of travel or stop altogether the user is required to incline the skate for engaging the brake pad with the ground surface.
  • This approach to brake design has several drawbacks. Perhaps, the most serious disadvantage is the requirement for the user to orient the skate at an angle with relation to the ground plane to provide breaking action. At low speeds, this manoeuvre can be executed easily and well even by novice users. At high speeds, however, precisely where braking authority is critical, this manoeuvre can induce a loss of balance with the potential of serious falls.
  • the second class of brake systems covers structures that produce braking action as a result of movement of body parts
  • the roller-skate described in this reference includes a boot mounted on a frame that supports four wheels arranged in a common plane.
  • the boot includes a lower section, commonly called “shell” that receives the foot of the user.
  • the lower portion of the user's leg is supported by an encircling cuff, that is pivotally connected to the shell about a generally horizontal axis. This pivotal connection enables the cuff to follow the movement of the leg when the leg is inclined forwardly or rearwardly during the skating movement.
  • the brake system is operated by a movement of the cuff. When the cuff is tilted back, which occurs when the user brings forward one foot (the one equipped with the brake) with relation to the other foot, a brake pad is caused to engage the ground surface.
  • the linkage that enables the transmission of the braking movement from the cuff to the brake pad includes two components.
  • the first component is an arm pivotally connected to a rear portion of the skate frame.
  • the extremity of the arm that is remote from the pivot axis carries the brake pad.
  • the second component is a rod-like actuator that connects the pivotal arm to the cuff.
  • the connections between the rod-like actuator, the brake arm and the cuff are pivot joints as well.
  • the assembly behaves as a four-link structure that causes the brake arm to move down as the cuff is tilted back and to move up when the cuff is tilted forward.
  • An object of the present invention is to provide a brake system for a roller skate that operates against the wheels of the skate, yet being simple and unexpansive to manufacture.
  • Another object of the invention is to provide a roller skate utilising the aforementioned brake system.
  • Another object of the invention is to provide a novel frame for an in-line roller skate.
  • the invention provides a brake system for a roller skate, the roller skate having a boot for receiving the foot of the skater and a cuff for encircling the lower leg portion of the skater, the cuff being pivotally connected to the boot about an axis substantially transverse to a longitudinal axis of the boot, the roller skate also including a frame carrying at least two wheels rotatable in a common plane, said brake system including: - an elongated brake band intended to be placed in a vicinity of at least one of the two wheels;
  • said brake band being capable of being flexed between two operative positions, namely an active position and a passive position, in said active position, said brake band being capable of engaging a surface of the at least one of the two wheels to generate contact friction to slow the movement of the roller skate, in said passive position said brake band generating substantially no contact friction with either one of the at least two wheels; - said brake band being responsive to tension imparted thereto to cause said brake band to flex from said passive position to said active position;
  • said brake band being capable of being operatively connected to said cuff, whereby pivotal movement of the cuff induces tension in said brake and causes the brake band to generate contact friction with at least one of the wheels of the skate.
  • the brake band is mounted in the frame of the skate immediately above the wheels.
  • the brake band has a forward end anchored near the frontal portion of the frame and a rear end projecting from the rear portion of the frame.
  • the brake band is continuous from the forward end to the rear end.
  • a linkage assembly connects the rear end of the brake band to the cuff, such that when the cuff is pivoted rearwardly the linkage causes the brake band to be tensioned and to engage the rolling surface of the wheels.
  • the linkage assembly includes a first link member having an upper extremity pivotally connected to a rear portion of the cuff, and a second link member pivotally mounted to a rear portion of the frame and also pivotally connected to the lower extremity of the
  • SUBSTTTUTE SHEET (RULE 26) first link member.
  • the brake band is secured to the second link member.
  • the first link member is caused to move down. In turn, this produces a downward pivotal movement of the second leading member, imparting tension in the brake band.
  • the brake band is preferably made of flexible high friction material that should be abrasion resistant.
  • the brake band can be made of rubber material that has a high coefficient of .friction such as to generate sufficient braking activity when engaged against the rolling surface of the wheels.
  • the rubber material may be reinforced with a fabric made of synthetic fibers, such as nylon, that provide an increased level of stretch resistance.
  • the brake band may be assembled as a laminated structure, more particularly including a lower layer of rubber material and an upper reinforcing layer of woven fibers. Both layers may be secured to one another along their entire contact surface in any suitable way.
  • the rubber layer includes a plurality of spaced apart projections that constitute the friction surface which engages the rolling surface of the wheels.
  • the invention is not limited to a brake band made from flexible material. What is important for the success of the invention is that the brake band, as a whole, behaves as a flexible structure.
  • the brake band may be constituted of individual, non flexible elements that are connected to one another in a way to make a flexible structure.
  • the brake band can be made from a plurality of rigid links that are pivotally connected to one another, in a manner similar to the chain.
  • the individual link members are not flexible they form a structure which can be flexed between the active and the passive positions.
  • the brake In the active position the brake and is caused to forcibly engage the rolling surface of one or more wheels so as to generate a sufficient level of contact friction to slow down or stop the skate.
  • the degree of contact friction which determines the rate at which the skate will slow down is determined by level of friction developed in the brake band; the higher the tension the stronger the breaking action will beef.
  • the brake band When the brake band is flexed to the passive position it should produce as little contact friction as possible so as to avoid slowing down the movement of the skater. This however, does not imply that the brake band will not be in physical contact with the surface of the wheel. Ideally, the brake band should not make any contact with the wheel, however, in practice some level of contact may be tolerated without creating undue restriction to movement. For instance, when the brake band is configured to engage the rolling surface of the skate wheels it can be designed to freely rest on the wheels while it remains in the passive position.
  • the brake band is designed to contact a wheel of the skate over a continuous sector, rather than over a single contact point. This allows to distribute the forces generated during the braking action over a larger surface area of the brake band which reduces localized wear, thus increasing the useful life of the brake band.
  • guides members are placed in the frame of the skate. In a typical construction, a guide member is located between adjacent wheels, below the upper extremities of the wheels. The brake band is threaded such as to pass under the guide member, defining a downwardly extending portion which engages the rolling surfaces of both wheels.
  • the frame is provided with three guide members located between adjacent wheels.
  • roller skate comprising:
  • a boot for receiving the foot of the skater;
  • a cuff for encircling the lower leg portion of the skater, said cuff being pivotally connected to said boot about an axis substantially transverse to a longitudinal axis of said boot;
  • said brake band being capable of being flexed between two operative positions, namely an active position and a passive position, in said active position, said brake band being capable of engaging a surface of the at least one of said wheels to generate contact friction to slow the movement of the roller skate, in said passive position said brake band generating substantially no contact friction with either one of said wheels; - said brake band being responsive to tension imparted thereto to cause said brake band to flex from said passive position to said active position;
  • said brake band being operatively connected to said cuff, whereby pivotal movement of said cuff induces tension in said brake band and causes said brake band to generate contact friction with at least one of said wheels.
  • the invention further provides a frame for a roller skate, said frame including:
  • the invention further includes a roller skate comprising:
  • a cuff for encircling the lower leg portion of the skater, said cuff being pivotally connected to said boot about an axis substantially transverse to a longitudinal axis of said boot;
  • a brake system including:
  • said brake band being flexible and being capable of acquiring either one of two operative positions, namely an active position and a passive position, in said active position, said brake band being capable of conforming to a portion of a rolling surface of at least one of said wheels and engaging said rolling surface over a continuous sector having a certain angular extent to generate contact friction to slow the movement of the roller skate, in said passive position said brake band generating substantially no contact friction with either one of said wheels; - said brake band being operatively connected to said cuff, whereby pivotal movement of said cuff causes said brake band to acquire said active position.
  • Figure l is a perspective view from the rear of an in-line roller skate with a brake system constructed in accordance with the present invention
  • Figure 2 is an elevational view of the roller skate of figure i ;
  • Figure 3 is a side elevational view of the roller skate of figure 1, partly cut away showing the brake band in the passive position;
  • Figure 4 is a side elevational view of the roller skate in accordance with the invention, partly cut away showing the brake band in the active position;
  • Figure 5 is a fragmentary enlarged vertical cross-sectional view of the skate in accordance with the invention illustrating the relationship between the band brake and a wheel of the skate when the brake band in the passive position;
  • Figure 6 is a fragmentary enlarged vertical cross-sectional view of the skate in accordance with the invention illustrating the relationship between the band brake and a wheel of the skate when the brake band in the active position.
  • the roller skate designated comprehensively by the reference numeral 10 includes a boot 12 mounted on a frame 14 that carries a plurality of wheels 16 (four wheels) arranged in a common vertical plane that contains the center line of the skate.
  • the boot 12 includes a shell 17 that encloses the foot of the user.
  • a cuff 18 encircles the lower leg to provide lateral stability.
  • the cuff is pivotally connected to the shell 18 at two sites located on either side of the skate. Only one such site is shown in the drawings and it is identified by the reference numeral 22. This structure allows the cuff to pivot forwardly or rearwardly, thus accommodating the movements of the lower leg during skating, while maintaining the leg in the plane that contains the frame 14 and the wheels 16.
  • the shell 18 and the cuff 20 are made of plastic material by injection molding.
  • the material used should be sufficiently flexible to provide good comfort potential while being abrasion and impact resistant to protect the foot.
  • a liner 24 is mounted in the boot 12 to provide a high degree of comfort while maintaining the foot stable in the shell 18 and the cuff 20.
  • the liner can be made from a variety of different materials. The material of choice should be soft and highly resilient to conform to the surface of the foot, thus avoid pressure points that could result in discomfort. Normally, the liner would extend from the toe portion of the shell 18 up to the upper end of the cuff 20.
  • the liner can be made as a single piece, or as two or more separate elements joined in the ankle region of the foot.
  • the roller skate 10 features a novel wheel engaging brake system.
  • the brake system is mounted at the rear of the skate and includes two main components namely, an actuation linkage assembly
  • the linkage assembly 26 is designed to interact with the cuff 18 to tension the brake band 30 when the cuff 18 is pivoted rearwardly for, in turn, generating contact friction between the brake band 30 and the rolling surface of each wheel 16.
  • the linkage assembly 26 includes an upper link member 32 pivotally connected to the rear portion of the cuff 18 and rearwardly projecting therefrom.
  • a pivot pin 36 joints the first link member 34 and the cuff 18.
  • the pivot pin 36 may be a rivet or any other suitable fastener.
  • the first link 32 member is connected to the cuff through the intermediary of an adjustment mechanism 38 allowing to set the vertical position of the first link member 32 with relation to the cuff. That vertical positioning determines the angle of the cuff at which the brake band will begin creating frictional contact with the wheels.
  • An adjustment mechanism that has been found satisfactory is available on roller skates manufactured by Bauer Inc. in Canada under the trade designation F4.
  • the lower extremity 40 of the first link member 32 is connected to a second link member 30 through a pivot joint 42. More specifically, the second link member 40 is pivotally connected to the frame 12. The pivotal connection is effected precisely where the rearmost wheel is mounted for rotation on the frame. This feature simplifies the assembly of the state since a single screw 44 connects both the wheel 16 and the second link member 40 to the frame 12.
  • the brake band 30 is mounted between the side rails of the frame, extending throughout the entire frame as is best shown at figures 3 and 4..
  • the front end of the brake band 30 is anchored in a retainer 46.
  • the retainer includes a slot in which the brake band 30 is inserted and permanently secured therein by any suitable means, such as adhesives or mechanical fasteners.
  • the rear extremity of the brake band 30 is secured to the second link member 40.
  • the attachment is made in a similar way as the forward end of the brake band. More specifically, the second link member 40 carries the block of plastics material 48 provided with a slot 50 dimensioned to receive therein the extremity of the brake band. The portion of the brake band inserted in the slot is secured therein by adhesives or any suitable mechanical fastener.
  • guide pins 52 comprise and portions projecting through apertures (not shown in the drawings) on the respective side rails of the frame. Those projecting portions are then secured by small nuts.
  • guide pins 52 can be envisaged without departing from the spirit of the invention.
  • the guide pins 52 are located between adjacent wheels and below the edges of the wheels.
  • the brake band 30 is configured to descend between adjacent wheels, in effect looping the wheels to provide an increased contact surface as it will be described in detail later.
  • the brake band 30 is made of high friction, abrasion resistant material.
  • the brake band 30 includes at least one layer of rubber like material which should be selected to provide the desired level of abrasion resistance and high frictional coefficient.
  • the brake band may include a layer of highly resistant synthetic material.
  • An example of such material is a woven fabric made of nylon fibers that provide excellent stretch resistance.
  • Both layers of the brake band are preferably secured to one another over their entire contact surface. This could be accomplished by adhesives or by any other appropriate means.
  • the layer of high friction material may be sculptured to include projections in a spaced apart relationship, such as serrations.
  • the brake system of the skate operates as follows. During skating, when braking is not desired the position of the cuff 18 is as shown at figure 3.
  • the linkage assembly 26 keeps the brake band 30 in a position such that its wheel engaging surface does not create any significant contact friction with the wheels. As mentioned during the introductory portion of the specification, some contact brake band/wheel can be tolerated, as shown for example on the second wheel of the skate, without creating undue resistance to movement.
  • the skater desires to brake it suffices to bring the foot that is equipped with the brake forward which causes the cuff 18 to pivot rearwardly. This movement is shown at figure 4.
  • the rearward movement of the cuff causes the first link member 32 to descend, in turn pivoting the second link member 40 down.
  • the brake band when brought in the active position engages the rolling surface of each wheel over a continuous sector having an annular extent of approximately 60 degrees. This provides a broad contact surface allowing to better distribute heat generated during the contact friction and abrasion. As a result, the wear of the brake band 30 is more uniformly effected, thus increasing the useful life of this brake component.
  • the flexibility of the brake band in a plane which is transverse to the longitudinal axis of the skate allows the brake band to engage the rolling surface of each wheel over and area that extends on the side walls of the wheels. For the reasons mentioned above this feature allows to reduce localized wear and better dissipate heat generated during the braking action.
  • resilient members to urge the brake band away from the rolling surfaces of the wheels when the brake band is in the passive position.
  • small springs could be suspended from the top wall of the frame to engage the brake band precisely where it contacts the apexes of the wheels. Thus, those portions of the brake band will be urged upwardly toward the top wall of the frame.
  • the springs are resiliently deformed allowing the brake band to descend and engage the wheels.

Landscapes

  • Motorcycle And Bicycle Frame (AREA)

Abstract

L'invention concerne un système de freinage pour patins à roulettes. Ce sytème, monté à l'arrière du patin et commandé par les mouvements de la coque supérieure, comprend une bande de freinage allongée qui chevauche l'ensemble roues. Lorsqu'on fait pivoter la coque supérieure, une tension est transmise à la bande, qui se rabat sur la surface de roulement des roues et engendre un frottement. L'invention s'étend aux patins à roulettes équipés du système de freinage sus-mentionné ainsi qu'à une nouvelle armature de patins dotés d'éléments de guidage qui augmentent la plage de contact entre la bande de freinage et la surface de roulement des roues.
PCT/CA1996/000642 1995-09-25 1996-09-25 Patin a roues alignees equipe d'un systeme de freinage a bande de frein flexible WO1997011758A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU69823/96A AU6982396A (en) 1995-09-25 1996-09-25 In-line roller skate with brake system including a flexible brake band

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US427895P 1995-09-25 1995-09-25
US60/004,278 1995-09-25

Publications (1)

Publication Number Publication Date
WO1997011758A1 true WO1997011758A1 (fr) 1997-04-03

Family

ID=21710005

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1996/000642 WO1997011758A1 (fr) 1995-09-25 1996-09-25 Patin a roues alignees equipe d'un systeme de freinage a bande de frein flexible

Country Status (2)

Country Link
AU (1) AU6982396A (fr)
WO (1) WO1997011758A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6010137A (en) * 1998-06-01 2000-01-04 Rollerblade, Inc. Quick adjusting braking apparatus
WO2000038802A1 (fr) * 1998-12-28 2000-07-06 Evoluzione S.R.L. Systeme de freinage pour patins a roues alignees

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2670125A1 (fr) * 1990-12-06 1992-06-12 Guerin Gerard Dispositif de transport en deux parties separees comportant chacune seulement deux roues placees a l'exterieur d'un support.
EP0600274A1 (fr) * 1992-11-30 1994-06-08 NORDICA S.p.A Dispositif de freins en particulier pour patins à roulettes
US5464235A (en) * 1993-03-01 1995-11-07 Goldman; David A. Brake lock for in-line roller skate braking system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2670125A1 (fr) * 1990-12-06 1992-06-12 Guerin Gerard Dispositif de transport en deux parties separees comportant chacune seulement deux roues placees a l'exterieur d'un support.
EP0600274A1 (fr) * 1992-11-30 1994-06-08 NORDICA S.p.A Dispositif de freins en particulier pour patins à roulettes
US5464235A (en) * 1993-03-01 1995-11-07 Goldman; David A. Brake lock for in-line roller skate braking system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6010137A (en) * 1998-06-01 2000-01-04 Rollerblade, Inc. Quick adjusting braking apparatus
WO2000038802A1 (fr) * 1998-12-28 2000-07-06 Evoluzione S.R.L. Systeme de freinage pour patins a roues alignees

Also Published As

Publication number Publication date
AU6982396A (en) 1997-04-17

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