EP0853963A1 - Plaque de frottement pour patins à roulettes - Google Patents

Plaque de frottement pour patins à roulettes Download PDF

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Publication number
EP0853963A1
EP0853963A1 EP98850007A EP98850007A EP0853963A1 EP 0853963 A1 EP0853963 A1 EP 0853963A1 EP 98850007 A EP98850007 A EP 98850007A EP 98850007 A EP98850007 A EP 98850007A EP 0853963 A1 EP0853963 A1 EP 0853963A1
Authority
EP
European Patent Office
Prior art keywords
grind plate
skate
frame
platform
toe
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP98850007A
Other languages
German (de)
English (en)
Inventor
Dirk L. Cornelius
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rollerblade Inc
Original Assignee
Rollerblade 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 Rollerblade Inc filed Critical Rollerblade Inc
Publication of EP0853963A1 publication Critical patent/EP0853963A1/fr
Withdrawn legal-status Critical Current

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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
    • A63C17/04—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
    • A63C2201/00—Use of skates, skis, roller-skates, snowboards and courts
    • A63C2201/02—Aggressive riding, e.g. grinding
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C2203/00—Special features of skates, skis, roller-skates, snowboards and courts
    • A63C2203/42—Details of chassis of ice or roller skates, of decks of skateboards

Definitions

  • the present invention relates generally to skates. More particularly, the present invention relates to grind plates for skates.
  • roller skating and in-line skating have become extremely popular. Many participants in these sports have developed an interest in what is known as “aggressive” or “extreme” skating. Such skating includes jumping, flipping, sliding across raised surfaces, sliding down rails, and other similar types of maneuvers.
  • Skates generally have a boot and a frame attached to a sole of the boot. Many in-line skates also have hard outer shells covering portions of the boot.
  • the frame of a skate is made of plastic or metal and has a platform with an upper surface and a lower surface.
  • the platform generally has a toe area and a heel area, with the heel area being vertically higher than the toe area.
  • Some platforms have separated toe and heel areas.
  • the boot is positioned with its sole abutting the upper surface of the frame platform.
  • the boot is often attached to the frame by rivets that extend through the sole of the boot and the frame platform, with the heads or nuts of the rivets in opposing contact with the lower surface of the platform.
  • Wheels are attached to a lower portion of the frame.
  • the lower portion of the frame includes inner and outer elongated parallel rails each being longitudinally connected to the lower surface of the platform and aligned along a center portion of the platform such that the platform forms oppositely disposed inner and outer lateral flanges.
  • the inner lateral flange extends outwardly from the inner rail and the outer lateral flange extends outwardly from the outer rail.
  • the outer rail and the lower surface of the outer lateral flange of the platform come into sliding or grinding contact with abrasive surfaces such as concrete walls, metal rails and the like. Repeated grinding contact with such surfaces quickly wears away the skate frame. In addition, grinding in this area of the frame wears away the rivets connecting the boot to the frame. Eventually, the frame will fall off of the boot if the heads or nuts of the rivets are worn away.
  • the attached boot and its shell also frequently come into contact with the abrasive surface when, for example, the platform does not completely cover the sole of the boot, the skater grinds at a sharp angle, the skater slips causing the boot or its shell to hit the surface, or the skater purposely grinds on the shell itself.
  • skaters In another type of extreme skating, skaters jump onto a metal rail such that the longitudinal axis of the skate frame is transverse to the rail, with a portion of the bottom edge of the skate frame engaging the rail. Typically, skaters grind on the portion of the skate frame bottom edge, which is disposed between the two middle wheels. If the skater has momentum and lands on the rail as described, the portion of the skate frame bottom edge, which engages the rail, will slide along the rail. This type of sliding or grinding wears away the bottom edge of the skate frame. Many skaters choose to purposely form a groove on this area of the skate frame to facilitate sliding or grinding on rails. However, once the skater has achieved the desired groove, sliding or grinding in the groove will continue to wear down the skate frame. As the skate frame wears away, the stability and performance of the skate decreases.
  • Some skates have replaceable frames. This solution, however, requires a complete disassembly of the skate and reassembly with the new frame which can be expensive and time-consuming. Moreover, sometimes the shell of the boot and even the boot itself is damaged from such grinding. Finally, some skates are integrally molded to the frame, thereby preventing replacement of the frame.
  • the present invention provides a solution to this and other problems and offers other advantages over the prior art.
  • the present invention relates to a grind plate for a skate.
  • Typical skates include a boot with a sole having a toe area and a heel area, a frame attached to the boot, wheels with wheel bores, and a plurality of axle apertures formed through the frame and coaxially aligned with the wheel bores.
  • the grind plate includes a toe platform having an upper surface opposing a portion of the toe area of the sole of the boot, a heel platform having an upper surface opposing a portion of the heel area of the sole of the boot.
  • the grind plate also includes a lower portion extending downwardly from the toe platform and the heel platform such that the lower portion is adjacent to selected areas of the frame of the skate when the grind plate is attached to the skate.
  • the grind plate has a fastening means for fastening the grind plate to the skate.
  • the fastening means includes a plurality of apertures, near a bottom edge of the lower portion of the grind plate, sized to slidably receive a wheel axle.
  • each of the grind plate apertures is coaxial with at least one axle aperture in the frame.
  • wheel axles may be used to attach the grind plate to the skate.
  • the present invention relates to a grind plate 10 for use with a skate to protect a frame and a skate boot of the skate.
  • the grind plate 10 may be integrally molded into the frame of a skate or may be removable and replaceable. It will be apparent that the grind plate 10 can be configured for use with any type of skate, but is described with reference to in-line skates, such as skate 40 shown in Fig. 1.
  • Fig. 1 is a representative drawing of a typical construction of an in-line skate 40.
  • the in-line skate 40 has a boot 42 with a sole 44 having a toe area 46 and a heel area 48. Many boots have a hard outer shell, such as shell 41, covering selected areas of the boot.
  • the in-line skate 40 has a frame 50 with a sole platform 52 and elongated inner and outer parallel rails 54 and 56 having axially aligned pairs of frame axle apertures (not shown) sized to slidably receive a wheel axle.
  • the rails 54 and 56 are longitudinally connected to a lower surface 60 of the sole platform 52 and are aligned near a center portion of the sole platform 52.
  • In-line wheels such as, for example, wheels 62.1 through 62.4 having wheel bores (not shown), are rotatably mounted between the rails 54 and 56.
  • Each frame axle aperture of the pairs of frame axle apertures is sized to slidably receive a wheel axle, such as wheel axle 65.1 shown in Fig. 3, for mounting an in-line wheel therebetween.
  • the wheel bore is coaxially aligned with one of the pairs of frame axle apertures and is sized to slidably receive a wheel axle, such as wheel axle 65.1.
  • the sole platform 52 of the frame 50 receives a portion of the toe area 46 of the sole 44 of the boot 42 and a portion of the heel area 48 of the sole 44 of the boot 42.
  • the sole platform 52 forms oppositely disposed inner and outer front flanges 68 and 69 that extend outwardly from the inner and outer rails 54 and 56, respectively, near the front, or toe area of the frame 50.
  • the sole platform 52 forms inner and outer rear flanges (not shown) that extend outwardly from the inner and outer rails 54 and 56, respectively, near the rear, or heel area of the frame 50.
  • the frame 50 is typically secured to the sole 44 of the boot 42 by at least one rivet 43.1 extending through the sole 44 of the boot 42 and the inner front flange 68 as shown in Fig. 3, at least one rivet 43.2 extending through the sole 44 of the boot 42 and the outer front flange 69 as shown in the cut away area of Fig. 2, and at least two rivets (not shown) wherein one rivet extends through the sole 44 of the boot 42 and the inner rear flange and the other rivet extends through the sole 44 of the boot 42 and the outer rear flange.
  • the grind plate 10 includes an upper platform 12 for receiving an outer portion of the sole 44 of the boot 42.
  • the upper platform 12 may be separated into a toe platform 14 and a heel platform 16 having upper surfaces 18 and 20 and lower surfaces 24 and 25, respectively.
  • the upper surface 18 of the toe platform 14 has an inner depression 22 aligned along an inner edge 19 of the toe platform 14.
  • the inner depression 22 is shaped to receive the front outer flange 69 that is riveted or otherwise connected to the toe area 46 of the sole 44 of the boot 42.
  • the remaining portion of the upper surface 18 of the toe platform 14 abuts a portion of the toe area 46 of the sole 44 of the boot 42.
  • the upper surface 20 of the heel platform 16 is substantially flat.
  • the upper surface 20 of the heel platform 16 When the grind plate 10 is attached to the skate 40, the upper surface 20 of the heel platform 16 is vertically spaced below the heel area 48 of the sole 44 of the boot 42. As shown in Fig. 2, the upper surface 20 of the heel platform 16 may abut a downwardly extended portion of the shell 41 of the boot 42. It will be apparent to those in the art, that the toe and heel platforms 14 and 16 of the grind plate 10 can be configured in many different ways to accommodate varying shapes of skate frames and boots.
  • the grind plate 10 also has an elongated lower portion 26, extending downwardly from said toe and heel platforms 14 and 16.
  • the lower portion 26 is substantially perpendicular to the toe platform 14 and adjoins the toe and heel platforms 14 and 16 adjacent to inner edges 19 and 21 of the toe and heel platforms 14 and 16, respectively.
  • the elongated lower portion 26 is configured to be positioned adjacent to selected portions of the outer rail 56 of the frame 50 when the grind plate 10 is attached to the in-line skate 40.
  • the grind plate 10 could also be configured to be positioned adjacent to the inner rail 54 of the frame 50 or to be positioned adjacent the wheels 62 if the frame has only one elongated rail disposed on the opposite side of the wheels from the lower portion 26 of the grind plate 10.
  • the elongated lower portion 26 has a plurality of grind plate apertures 28.1 through 28.4 near a bottom edge 30 of the elongated lower portion 26.
  • the grind plate apertures 28.1 through 28.4 are spaced longitudinally along the elongated lower portion 26 such that each grind plate aperture 28.1 through 28.4 is coaxial with one of the plurality of axially aligned pairs of axle apertures of rails 54 and 56, when the grind plate 10 is attached to the in-line skate 40.
  • the grind plate apertures 28.1 through 28.4 are each sized to slidably receive a wheel axle 65.1 through 65.4, respectively, for connecting the grind plate 10 to the in-line skate 40. It will be apparent that various wheel axle configurations could be utilized to attach the grind plate 10 to the in-line skate 40.
  • the bottom edge 30 of the elongated lower portion 26 is shaped in a plurality of arcs 38.1, 38.2 and 38.3. Each arc 38.1 through 38.3 is extended between two grind plate apertures 28.1 through 28.4. When the grind plate 10 is attached to the skate 40, portions of the outer rail 56 of the frame 50 are exposed below each of the arcs 38.1, 38.2 and 38.3.
  • the elongated lower portion 26 has inner and outer surfaces 35 and 36, respectively. Substantially parallel grooves 34 are formed on the outer surface 36 of the lower portion 26. The grooves 34 help reduce the material used in the grind plate 10, thereby reducing the weight of the grind plate 10.
  • the grind plate 10 is preferably made of 30% glass-filled nylon. However, any other suitable material could be used.
  • the inner surface 35 of the lower portion 26 has reliefs 37 and 39, which are formed in the grind plate 10 to accommodate the particular shape of the skate frame 50. It will be apparent that such reliefs could be formed in any manner to accommodate varying shapes of the skate frame, or, alternatively, such reliefs may not be needed at all.
  • the wheel axles 65.1 through 65.4 must be removed.
  • the grind plate 10 is then positioned adjacent to the outer rail 56 of the skate frame 50, with each of the grind plate apertures 28.1 through 28.4 axially aligned with one of the plurality of axially aligned pairs of frame axle apertures, wherein each of the wheels 62.1 through 62.4 is inserted between one of the pairs of frame axle apertures.
  • the toe and heel platforms 14 and 16 of the grind plate 10 are positioned such that their respective upper surfaces 18 and 20 abut the toe and heel areas 46 and 48, respectively, of the sole 44 of the boot 42, with the inner depression 22 receiving the outer front flange 69 of the frame 50.
  • a wheel axle 65.1 through 65.4 is then inserted into each of the aligned grind plate apertures, and its coaxially aligned pair of axle apertures and wheel bore, and clamped to securely hold the respective wheel and the grind plate 10 in place.
  • An extreme skater may "grind” on several areas of the grind plate 10 when skating on an in-line skate.
  • the skater may build up momentum and jump onto a raised surface area, landing on the lower surface 24 of the toe platform 14 of the grind plate 10.
  • the skater will continue to slide along the raised surface while he maintains balance and momentum.
  • skaters will often slow down by leaning back to press the heel area of the sole 44 of the boot 42 onto the raised surface. This action also causes the outer rear flange of the sole platform 52 of the frame 50 to slide along the raised surface.
  • the grind plate 10 When the grind plate 10 is attached to a skate, however, the lower surface 25 of the heel platform 16 can be pressed into the raised surface along which the skater is sliding, in order to slow down the skater. Because the heel platform 16 is vertically spaced below the heel area 48 of the sole 44 of the boot 42, the skater will not have to lean back as far as usual in order to slow down. It will be apparent that the grind plate 10 need not be configured with a vertically lowered heel platform 16. Rather, the heel platform 16 of the grind plate 10 could be configured to receive the heel area 48 of the sole 44 of the boot 42 in a manner similar to the toe platform 14 of the grind plate 10.
  • the rivets such as rivet 43.2, which connect the skate frame 50 to the boot 42 will be protected because the grind plate 10 will prevent direct contact between the rivets and abrasive surfaces contacting the skate 40 during grinding.
  • the grind plate 10 can be replaced at any time with a new grind plate 10.
  • typical grinding often results in the sole 44 and shell 41 of the boot 42 sliding along abrasive surfaces.
  • the grind plate 10 substantially covers outer portions of the toe and heel areas 46 and 48 of the sole 44 of the boot 42, thus protecting the boot 42 from abrasive surfaces.
  • An alternative method of "grinding” involves metal rails and pre-formed grooves in the skate frame 50. Skaters who grind on metal rails will usually pre-form a groove in the bottom edge 51 of the skate frame 50 between two of the wheels 62.1 through 62.4. Typically, the groove is formed between the two middle wheels 62.2 and 62.3. Skaters will rub the bottom edge 51 of the skate frame along an abrasive surface until the bottom edge 51 of the skate frame 50 has been worn away enough to permit grinding along rails.
  • the grind plate 10 has arcs 38 already formed to prevent the skater from having to exert additional effort to grind away the bottom edge 30 of the grind plate 10 to create the pre-formed groove.
  • the grind plate 10 arcs 38.1 through 38.3 are also advantageous for grinding in this manner because once the groove in the bottom edge 51 of the skate frame 50 is flush with one of the arcs 38.1, 38.2 or 38.3 of the grind plate 10, the additional material of the grind plate 10, which is adjacent to the pre-formed groove, slows down the rate at which grinding erodes the bottom edge 51 of the skate frame 50.

Landscapes

  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP98850007A 1997-01-17 1998-01-16 Plaque de frottement pour patins à roulettes Withdrawn EP0853963A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78394397A 1997-01-17 1997-01-17
US783943 1997-01-17

Publications (1)

Publication Number Publication Date
EP0853963A1 true EP0853963A1 (fr) 1998-07-22

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EP98850007A Withdrawn EP0853963A1 (fr) 1997-01-17 1998-01-16 Plaque de frottement pour patins à roulettes

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EP (1) EP0853963A1 (fr)
CA (1) CA2227325A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001041887A1 (fr) * 1999-12-13 2001-06-14 Sports Inline International B.V. Patin a roulettes possedant un seul alignement de roulettes et un chassis, son procede de fabrication
WO2002102478A2 (fr) * 2001-05-31 2002-12-27 Benetton Group S.P.A. Patin destine en particulier a un patinage agressif

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300601A1 (de) * 1982-01-12 1983-08-04 Luc 78230 Le Perq Boucher Rollschuh mit vorrichtung zur ueberwindung von hindernissen
ATE133872T1 (de) * 1990-07-03 1996-02-15 Rollerblade Inc Befestigungskopf und deckel für einspurige rollschuhe
DE29615352U1 (de) * 1996-09-05 1996-11-28 Langer, Günter, 27753 Delmenhorst Schienenschutz zur Montage an Inline-Skates

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300601A1 (de) * 1982-01-12 1983-08-04 Luc 78230 Le Perq Boucher Rollschuh mit vorrichtung zur ueberwindung von hindernissen
ATE133872T1 (de) * 1990-07-03 1996-02-15 Rollerblade Inc Befestigungskopf und deckel für einspurige rollschuhe
DE29615352U1 (de) * 1996-09-05 1996-11-28 Langer, Günter, 27753 Delmenhorst Schienenschutz zur Montage an Inline-Skates

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001041887A1 (fr) * 1999-12-13 2001-06-14 Sports Inline International B.V. Patin a roulettes possedant un seul alignement de roulettes et un chassis, son procede de fabrication
NL1013831C2 (nl) * 1999-12-13 2001-06-14 Sportsinline Internat B V In-line rolschaats met frame en werkwijze voor vervaardiging van een dergelijk frame.
WO2002102478A2 (fr) * 2001-05-31 2002-12-27 Benetton Group S.P.A. Patin destine en particulier a un patinage agressif
WO2002102478A3 (fr) * 2001-05-31 2003-03-20 Benetton Spa Patin destine en particulier a un patinage agressif

Also Published As

Publication number Publication date
CA2227325A1 (fr) 1998-07-17

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