EP0020315A1 - Sicherheitsbindung für Ski - Google Patents

Sicherheitsbindung für Ski Download PDF

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Publication number
EP0020315A1
EP0020315A1 EP80850074A EP80850074A EP0020315A1 EP 0020315 A1 EP0020315 A1 EP 0020315A1 EP 80850074 A EP80850074 A EP 80850074A EP 80850074 A EP80850074 A EP 80850074A EP 0020315 A1 EP0020315 A1 EP 0020315A1
Authority
EP
European Patent Office
Prior art keywords
elements
locking means
footwear
lower leg
shape permanent
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.)
Granted
Application number
EP80850074A
Other languages
English (en)
French (fr)
Other versions
EP0020315B1 (de
Inventor
Erik Trell
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT80850074T priority Critical patent/ATE10586T1/de
Publication of EP0020315A1 publication Critical patent/EP0020315A1/de
Application granted granted Critical
Publication of EP0020315B1 publication Critical patent/EP0020315B1/de
Expired 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
    • A63C9/00—Ski bindings
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A43B5/0415—Accessories

Definitions

  • the present invention relates to a safety footwear, preferably a ski boot, comprising serveral pivotally arranged shape permanent members forming parts of a cover which can be opened and which contacts at least the lower leg of the user of the footwear, and locking means to keep the cover in its closed position,said locking means being releasable at a preset maximum force between the lower leg and the cover.
  • the safety footwear according to the present invention will find the widest use in connection with down--hill skiing, and hence, the invention will be described in connection with the use of the footwear as a slalom boot.
  • the safety footwear of the present invention can, of course, be used whereever there is a risk of injuring feet and legs if such injure is caused by the appearance of too great forces between the user of the footwear and the footwear proper.
  • Slalom boots of today have very high shanks which may cause fractures of the lower legs, e.g. when the skier falls forwards and when the conventional safety ski-bindings, usually connecting the ski boot to the ski at the toe and heel portions of the boot, do not release in the normal way.
  • This normal releasing may be prevented e.g. by icing or jamming of the releasing mechanism, but it can also be prevented by downward bending of the ski as well, which means that the toe and heel portions of the safety binding are pressed against the boot and prevent normal releasing.
  • This type of injure and the cause therefor is typical in connection with "tourist-skiing" in slalom hills insufficiently prepared.
  • the lower leg will act as a lever, the upper shank portion of the boot forming the fulcrum.
  • the stress on the lower leg may reach such a magnitude and may occur so suddenly that the safety binding does not always have time to release before a fracture of the lower leg has occurred.
  • the arising stresses on the lower leg may also be too great if the lower leg is somewhat movable in relation to the shank portion of the boot because in that case the lower leg may move in relation to the shank portion of the boot over a limited distance and then may be suddenly stopped in its movement, which provides a shock--loading of the lower leg.
  • the object of the present invention is to provide a safety footwear, preferably a ski boot by the use of which the risk of foot and leg injuries is essentially eliminated.
  • pivotable shape permanent elements for swinging movement about axes at the base of the elements, it is possible to arrange these elements foldable from a fixed position at the lower leg when the force acting on the locking means securing the elements in their closed position thereof around the lower leg, exceeds an allowed maximum magnitude.
  • the shape permanent elements preferably are foldable against the bias of a yieldable force. It is advantageous if this force is progressively increasing and accordingly will be able to restrain gently twisting of the lower leg in the ankle--joint.
  • a safety footwear according to the present invention will keep the ankle-joint fixed, unless such forces arise between the lower leg and the shank portion of the footwear as are able to release the locking means keeping the shape permanent elements on place against the user's lower leg.
  • the locking means has been released by the occurring allowable maximum force, subsequent twisting in the ankle-joint will be progressively restrained when the opening movement of the shape permanent elements, caused by influence from the leg, takes place against the bias of the yieldable force.
  • the yieldable force counteracting the opening movement of the shape permanent elements may be adjustable, which makes possible to obtain a certain degree of mobility in the ankle-joint when the shape permanent elements are not abutting the lower leg. Then, the footwear will facilitate a more natural, walking as compared to conventional high-shanked ski boots. Thus, this means that the collapsible cover should form the shank part of the footwear, the shape permanent elements being pivoted at the level of the ankle-joint of the user.
  • An alternative embodiment of the safety footwear according to the present invention can have the sole of the footwear attached e.g. to a ski, the pivotable shape permanent elements being pivoted two and two about longitudinal and transverse axes, respectively, at the base of the elements, positioned in connection with the upper side of the ski.
  • an inner footwear is used which is kept in position by the pivotable shape permanent elements forming the safety footwear.
  • the shape permanent elements At the release of the locking means and a folding of the shape permanent elements, which may occur under the action of a yieldable force or not, the foot carrying the inner footwear is free to slip out of the safety footwear.
  • the shape permanent elements then will act as effective braking means of the released ski.
  • the shape permanent elements have lower inwardly angled portions biased by resilient devices which tend to keep the elements in an unfolded position.
  • a pressure from the inner footwear will automatically fold back the shape permanent elements to engage the inner footwear and the lower leg of the user, which facilitates the attachment and the removal of the safety footwear.
  • the locking means used to keep the shape permanent elements in position against the lower leg and, in the second embodiment, against the inner footwear as well, may consist of a spring biased link mechanism, one end of which is attached to a connecting piece of strip,preferably attached to a rearward element of the cover, hook or loop means being placed at the other end of the piece of the strip and co-operating with the link mechanism to lock the shape permanent elements.
  • the link mechanism may be of a known type and preferably includes at least one lever to provide the locking action, said lever decreasing progressively at increasing load to a position wherein the locking means will release.
  • a resiliently yieldable member surrounding the shape permanent elements may be attached. Said resilient member will not be released when the locking means is released, but will be progressively tensioned while accumulating energy.
  • the locking means may also comprise adjustably yieldable means at one part of the locking means, said yieldable means co-operating with recesses at the other part of the locking means in such a way that the locking means will release at the occurrence of an adjustable predetermined maximum force on the locking means.
  • the detailed construction of the locking means may be of any kind and e.g. may be based on the technique used in conventional safety bindings, wherein spring biased balls engage grooves or recesses between two parts movable in relation to each other. However, they may also include breakpins etc, which are dimensioned to break at a predetermined maximum load. Such breakpins of different strength may be available and provide the advantage that the maximum forces occurring on the skier's lower leg will be transferred directly to the locking means to cause said means to release. Thus, the use of a locking means is avoided, which is dependent on the friction between members movable in relation to each other, such friction being difficult to determine.
  • a locking means may be designed in several ways.
  • the breakpin may be positioned e.g. such that it forms simultaneously a pivot of a spanner for tightening stripes or the like locking the cover, around the upper portion of the shank.
  • Such a stripe can also consist of several elements interconnected by breakpins ensuring a safe release of "the locking means" independently of the direction in which the allowable maximum force from the user's lower leg acts onto the shank portion of the footwear.
  • cover-locking stripes only which will break when the allowable maximum force is applied to the shank portion of the footwear.
  • a practical embodiment of cover-locking stripes and locking means permitting the opening of the cover against a yieldable force comprises a resilient stripe, the resilient elongation of which in a non-released position will be prevented by the stripe being connected in parallel with a non-resilient link stripe consisting of link elements interconnected by breakpins. Then, a satisfactory locking of the different cover elements against the user's lower leg is obtained, the opening of the cover elements against the bias of a yieldable force at the same time being ensured when any of the breakpins is sheared at the appearance of an unallowably great force between the user's lower leg and the shank portion of the footwear.
  • the breakable stripes and/or the breakpins used for releasing "the locking means" may have different colours or combinations of colours representing different strengths , so as to make possible a correct release when the safety footwear is used e.g. by skiers, having a body weight and a degree of skill which allow a different magnitude of the permitted maximum force between the skier's lower leg and the shank portion of the footwear.
  • a well-trained and experienced skier thus may be expected to control great forces appearing between the lower leg and the shank portion of the boot and, accordingly, breakpins/break- able stripes of a greater strength may be used by that skier as compared with the forces between the shank portion of the boot and the lower leg, which can be allowed for less skilful skiers.
  • the openable cover of the safety footwear according to the present invention may comprise the only releasing mechanism/safety binding between the user of the footwear and e.g. a ski, or it can comprise a releasing mechanism supplementary to conventional releasing mechanisms acting between the ski and the boot.
  • the safety footwear according to the present invention may be used with or without an inner footwear in the two embodiments shown herein, the inner footwear being equipped with a high shank, the upper part of which is formed such that the transfer of the forces from the lower leg to the shank portion of the safety footwear will not be obstructed.
  • the rear portion of the shank of the inner footwear thus may be made relatively rigid to counteract to some extent the yieldability of the muscles of the leg, which in some cases may counteract a correct release of the locking means of the safety footwear.
  • FIG. 1 a ski 1 is shown on which a safety footwear according to the invention can be releasably attached by conventional releasing mechanisms co-operating with the sole 10 of the footwear, or the sole 10 of the footwear is fixedly attached to the upper side of the ski 1.
  • the shank portion of the footwear consists of several pivotally arranged shape permanent elements 2-5, forming parts of an openable cover.
  • the shape permanent elements 2-5 are pivotable about axes 2A-5A at the level of the ankle-joint of the user, possibly against the bias of yieldable forces.
  • FIG. 2 the shape permanent elements are shown in a locked position engaging the user's lower leg 11, a locking means 8 fixing the elements, being arranged around the upper portions of the elements.
  • This locking means 8 consists of a stripe without or with low resiliency and is held together around the elements by a conventional releasable spanner.
  • the locking means 8 may also be held around the upper portions of the elements by a non-releasable spanner, the releasing action being obtained by using one or more breakpins 14 interconnecting two or more parts of the locking means 8.
  • the ends of the portions of the locking means 8, at which the breakpins are positioned, are suitably arranged as hinges, two places on each breakpin preferably being exposed to shearing caused by a pulling force on the locking means 8.
  • the material of the breakpins is of a decisive importance to obtain a correct operation of the releasable locking means.
  • the material of the breakpins suitably should have a low shearing strength to make possible a release within permitted limits by the dimensioning of the breakpins, because the forces which shall release the locking means will be relatively small, although disastrous consequences will arise if such forces are exceeded.
  • a resiliently yieldable member 12 may be arranged around the shape permanent elements to obtain a yieldable force against which the shape permanent elements can be opened subsequent to releasing of the locking means.
  • the resilient member 12 can be engaged around the shape permanent element by means of a conventional spanner 13.
  • this resilient member 12 may be arranged in parallel with the locking means 8 and then may be tightened by means of one and the same spanner.
  • the resiliently yieldable member in that case can be positioned inside the locking means 8.
  • the safety footwear of this invention consists of a cover 2'-5' which can be fully opened, enclosing a soft shoe or inner boot 6.
  • the cover consists of rigid shell members and comprises two side portions 2' and 3' and a front portion 4' and a back portion 5'. These portions are pivoted about longitudinal and transverse axes, respectively, between an open position (FIG. 3) and a closed enclosing position (FIG. 4).
  • the different portions 2'-5' of the cover have lower inwardly directed edge portions 2a-5a which are positioned and can be actuated in such a way that a pressure from the sole 7 of the inner shoe or boot 6 provides an automatic folding of said different parts.
  • the releasable locking member 9 is of the kind which opens automatically when a predetermined maximum force is applied between the ends of the locking band 8'.
  • the inner boot 6 will be removed from the opened portions of the cover when the locking means has been released.
  • the rigid elements of the cover may be manufactured of carbon fiber reinforced plastics which provides the necessary rigidity of the elements 2-5, and also imparts to these elements a favourable low weight.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Ropes Or Cables (AREA)
EP80850074A 1979-05-21 1980-05-20 Sicherheitsbindung für Ski Expired EP0020315B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80850074T ATE10586T1 (de) 1979-05-21 1980-05-20 Sicherheitsbindung fuer ski.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7904421 1979-05-21
SE7904421 1979-05-21

Publications (2)

Publication Number Publication Date
EP0020315A1 true EP0020315A1 (de) 1980-12-10
EP0020315B1 EP0020315B1 (de) 1984-12-05

Family

ID=20338104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80850074A Expired EP0020315B1 (de) 1979-05-21 1980-05-20 Sicherheitsbindung für Ski

Country Status (3)

Country Link
EP (1) EP0020315B1 (de)
AT (1) ATE10586T1 (de)
DE (1) DE3069740D1 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4747221A (en) * 1986-06-02 1988-05-31 Hayes Jaye B Ski boot and sport shoe assembly
DE3821053A1 (de) * 1987-06-29 1989-01-12 Yamaha Corp Skistiefel aus hart-kunstharz
US4979319A (en) * 1986-06-02 1990-12-25 Hayes Jaye B Ski boot and sport shoe assembly
WO1992005718A1 (en) * 1990-10-02 1992-04-16 Arthur Kreitenberg Safety releasing ski boot
FR2670653A1 (fr) * 1990-12-20 1992-06-26 Salomon Sa Chaussure de ski alpin a entree par l'arriere.
US5295316A (en) * 1989-09-12 1994-03-22 Lange International, S.A. Ski boot with overlapping shaft members
US5553400A (en) * 1993-09-27 1996-09-10 Htm Sport- Und Freizeitgeraete Aktiengesellschaft Pressure-distributing plates for a ski boot
DE19527320A1 (de) * 1995-07-26 1997-01-30 Stefan Lederer Sportstiefel
FR2772630A1 (fr) * 1997-12-24 1999-06-25 Tech Sports Loisirs Perfectionnement pour raquette a neige
KR20200128688A (ko) * 2018-03-07 2020-11-16 잉위 쑨 스키 부츠

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7614638B2 (en) 2004-08-02 2009-11-10 The Burton Corporation Convertible toe strap

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317408A1 (de) * 1972-04-17 1973-10-31 Gertsch Ag Skischuh
DE2434218A1 (de) * 1974-07-16 1976-02-05 Walter Rieder Skischuh, bestehend aus innen- und aussenschuh
FR2292497A1 (fr) * 1974-11-28 1976-06-25 Salomon & Fils F Dispositif de liaison de la jambe d'un skieur a un ski

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317408A1 (de) * 1972-04-17 1973-10-31 Gertsch Ag Skischuh
DE2434218A1 (de) * 1974-07-16 1976-02-05 Walter Rieder Skischuh, bestehend aus innen- und aussenschuh
FR2292497A1 (fr) * 1974-11-28 1976-06-25 Salomon & Fils F Dispositif de liaison de la jambe d'un skieur a un ski

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4879822A (en) * 1986-06-02 1989-11-14 Hayes Jaye B Ski boot and sport shoe assembly
US4979319A (en) * 1986-06-02 1990-12-25 Hayes Jaye B Ski boot and sport shoe assembly
US4747221A (en) * 1986-06-02 1988-05-31 Hayes Jaye B Ski boot and sport shoe assembly
DE3821053A1 (de) * 1987-06-29 1989-01-12 Yamaha Corp Skistiefel aus hart-kunstharz
US5295316A (en) * 1989-09-12 1994-03-22 Lange International, S.A. Ski boot with overlapping shaft members
WO1992005718A1 (en) * 1990-10-02 1992-04-16 Arthur Kreitenberg Safety releasing ski boot
US5107608A (en) * 1990-10-02 1992-04-28 Arthur Kreitenberg Safety releasing ski boot
FR2670653A1 (fr) * 1990-12-20 1992-06-26 Salomon Sa Chaussure de ski alpin a entree par l'arriere.
EP0492116A1 (de) * 1990-12-20 1992-07-01 Salomon S.A. Skistiefel mit Hintereinstieg
US5553400A (en) * 1993-09-27 1996-09-10 Htm Sport- Und Freizeitgeraete Aktiengesellschaft Pressure-distributing plates for a ski boot
DE19527320A1 (de) * 1995-07-26 1997-01-30 Stefan Lederer Sportstiefel
FR2772630A1 (fr) * 1997-12-24 1999-06-25 Tech Sports Loisirs Perfectionnement pour raquette a neige
KR20200128688A (ko) * 2018-03-07 2020-11-16 잉위 쑨 스키 부츠
JP2021514689A (ja) * 2018-03-07 2021-06-17 寅▲貴▼ ▲孫▼ スキーブーツ

Also Published As

Publication number Publication date
ATE10586T1 (de) 1984-12-15
EP0020315B1 (de) 1984-12-05
DE3069740D1 (en) 1985-01-17

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