US3785667A - Toe-holding device for safety ski binding - Google Patents

Toe-holding device for safety ski binding Download PDF

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Publication number
US3785667A
US3785667A US00254366A US25436672A US3785667A US 3785667 A US3785667 A US 3785667A US 00254366 A US00254366 A US 00254366A US 25436672 A US25436672 A US 25436672A US 3785667 A US3785667 A US 3785667A
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US
United States
Prior art keywords
toe
shafts
holding device
aperture
stationary member
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.)
Expired - Lifetime
Application number
US00254366A
Other languages
English (en)
Inventor
Y Nagasaki
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Application granted granted Critical
Publication of US3785667A publication Critical patent/US3785667A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08557—Details of the release mechanism
    • 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
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08535—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a mobile body or base or single jaw
    • A63C9/0855—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a mobile body or base or single jaw pivoting about a vertical axis
    • 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
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/0805—Adjustment of the toe or heel holders; Indicators therefor

Definitions

  • ABSTRACT A toe-holding device for a safety ski binding comprising a toe-holder body laterally rotatably supported on a stationary member and having an aperture, the body being urgedly locked, at one point, to the stationary member with a given biasing force.
  • a pair of vertical shafts is extended through the aperture so that they can contact with the body, and is positioned symmetrically relative to the urgedly locked point of the body.
  • the aperture has a space enough to permit the body to be rotated about the pair of shafts respectively.
  • the body In a normal ski-operative condition, the body is prevented from its rotation by the contact of the shafts with the body and the biasing force acting on said one point of the body. When a force exceeding the given biasing force is applied to the body to tend to rotate it, the body is allowed to rotate in either lateral direction about either of the shafts.
  • the present invention relates to a toe-holding device for a safety ski binding of the type in which the toe por' tion of a ski boot can be simply clamped by a skier.
  • FIG. 1 is a plan view of a toe-holding device for a safety ski binding according to the invention
  • FIG. 2 is a side view of the device as shown in FIG.
  • FIGS. 4a and 4b are schematic plan view illustrating the rotating state of the toe holder of said device.
  • Rotating the vertical shaft 7 permits the clamp l to be threadedly guided along the shaft 7 up and down.
  • the toe portion of a ski boot A particularly the sole portion of the boot, can be clamped by said toe clamp l securedly.
  • a recess 8 of trapezoidal shape is bored and an aperture 9 is further hollowed out vertically downward from the bottom of the recess 8, the aperture being narrower in area than the recess 8 and formed into a rounded equilateral triangular shape having three equal-length arc sides, the adjacent sides forming a sharply rounded recess therebetween.
  • the undermentioned rollers of shafts are guidable along the lateral surface of the aperture 9, engaging therewith.
  • shafts 12 and 13 are arranged side by side in a lateral direction of the toe-holding device.
  • the rollers 14 and 15 are situated in the aperture 9 and are in contact'with the inner side wall of the body 4 defining the aperture 9.
  • the aperture 9 is covered with a cover plate 10 having a shape substantially conforming to the trapezoidal shape of the recess 8 but somewhat narrower than the latter, the cover plate 10 being seated in the recess 8, that is, on the stepped portion between the recess 8 and aperture 9.
  • the shafts l2 and 13 pierce the cover plate 10, with the upper end portions thereof fitted with fixing nuts 16, 16 preventing the cover plate 10 from being removed from the shafts l2 and 13.
  • a vertical through hole 17 having an inner-threaded upper section.
  • the hole 17 is formed in such a position of the body 4 that the above-mentioned shafts l2 and 13 are arranged symmetrically with each other relative to the hole 17.
  • An adjusting screw 21 is inserted into the upper section of the hole 17 by threadedly engaging therewith.
  • Intothe hole 17 are housed a coiled compression spring 19 and a steel ball 18 depressed downward by the coiled spring 19, a part of the steel ball 18 being protruded from the under surface of the toe holder body 4 and inserted into recessed seat 20 provided to the stationary plate 11.
  • the ball 18 is always pressed into the seat 20 under the biasing force of the coiled spring 19, and thus the toe holder body 4 is urgedly locked to the stationary plate 11.
  • the biasing force of the coiled spring 19 can be adjusted by screwing the screw 21 engaged with the inner thread of the vertical hole 17.
  • the numeral 22 denotes a buffer member arranged inside of the toe clamp 1.
  • the shape of the aperture 9 may be modified to any rounded equilateral polygonal shape having guide surfaces to slide the parallel shafts 12, 13.
  • the stationary plate 11 is fixed to a ski body by screws insertable through holes 23, 23.
  • the sole of the toe portion of the ski boot A is inserted between the ski body and the blades 2, 2'. At that time, the vertical position of the blades 2, 2' is properly adjusted by rotating the shaft 7. The top end of the ski boot is pressed against the projecting pawls 3, 3.
  • the toe holder body 4 resists to be held in the normal position against some limited force due to the locking action of the steel ball 18 inserted into the seat 20 of the stationary plate 11 through the biasing force of the coiled spring 19.
  • the steel ball 18 is removed from the seat 20, allowing the locking to be released, and the toe holder body 4 to be rotated.
  • the toe holder body 4 can be rotated eccentrically about the either one of the parallel shafts 12, 13, with the rotational movement thereof restricted by the rollers 14 and 15 engaged with the inside surface of the aperture 9 formed inside of said toe holder body 4. This rotational movement is guided by the relative movement between the surface of the rollers 14 and 15 and the contacting surface of the aperture 9.
  • FIGS, 4a and 4b the rotating state of the toe holder body 4 and the toe clamp 1 will be illustrated.
  • the safety mechanism of the toe-holding device of the present invention is such that, the toe portion ofa ski boot is being held securely in an normal skiing operation, whereas when an accident such as a tumbling or a bumping is caused to happen, giving a severe and extraordinary force to the toe of the ski boot, then the toe holder, holding the toe of the ski boot, is caused to rotate clockwise or counterclockwise, and thereby the toe of the ski boot is easily released from the ski; therefore the dangers such as the sprain and fracture of the ankle can be prevented. Further, the operation of the toe-holding device of the present invention is very easy and dependable. Thus, the present invention can provide very safe and dependable toe-holding device for safety ski bindings.
  • the above-mentioned embodiment comprises a toe holder body having one aperture 9 through which the shafts 12 and 13 are extended, there may be provided two separate apertures through which the shafts can be inserted respectively, instead of the aperture 9 of the above-mentioned embodiment.
  • a toe-holding device for a safety binding comprising: a stationary member; a toe holder body laterally rotatably supported on the stationary member, said body having an aperture of polygonal shape including at least three rounded inwardly concave sides which cooperate to form at least two rounded corners; fixing means positioned on a substantially longitudinal center line of said body for urgedly locking said body to the stationary member under a given biasing force; and a pair of vertical shafts fixedly mounted to said stationary member and extending through the aperture and positioned symmetrically with each other relative to the fixing means, said shafts being in contact with said body, said aperture having enough space to permit said body to be rotated about said pair of shafts respectively, whereby said body is prevented from its rotation by the contact of the shafts with said body and by the urged locking of the body to the stationary member, and when a force exceeding and acting against said given biasing force is applied to the body, the body is allowed to rotate in either lateral direction about either of said shafts, said vertical shafts being in contact with said rounded
  • said fixing means further comprises an adjustable screw screwed into that end of said hole opposite to the end facing the seat of said stationary member

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US00254366A 1971-07-19 1972-05-18 Toe-holding device for safety ski binding Expired - Lifetime US3785667A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971063651U JPS5215308Y2 (en, 2012) 1971-07-19 1971-07-19

Publications (1)

Publication Number Publication Date
US3785667A true US3785667A (en) 1974-01-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00254366A Expired - Lifetime US3785667A (en) 1971-07-19 1972-05-18 Toe-holding device for safety ski binding

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US (1) US3785667A (en, 2012)
JP (1) JPS5215308Y2 (en, 2012)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892421A (en) * 1972-03-01 1975-07-01 Rene Ramillon Safety tow-end device for ski binding
US3902728A (en) * 1972-12-01 1975-09-02 Salomon & Fils F Ski binding
US20120104707A1 (en) * 2010-10-29 2012-05-03 Salomon S.A.S. Safety binding for skiing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4817267Y1 (en, 2012) * 1970-11-24 1973-05-17

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027173A (en) * 1957-12-23 1962-03-27 Beyl Jean-Joseph Alfred Safety ski binder
US3288476A (en) * 1963-06-07 1966-11-29 Ramillon Rene Securing system of the abutment type for skis
US3445123A (en) * 1966-04-18 1969-05-20 Reuge Sa Front safety thrust-block for ski binding

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027173A (en) * 1957-12-23 1962-03-27 Beyl Jean-Joseph Alfred Safety ski binder
US3288476A (en) * 1963-06-07 1966-11-29 Ramillon Rene Securing system of the abutment type for skis
US3445123A (en) * 1966-04-18 1969-05-20 Reuge Sa Front safety thrust-block for ski binding

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892421A (en) * 1972-03-01 1975-07-01 Rene Ramillon Safety tow-end device for ski binding
US3902728A (en) * 1972-12-01 1975-09-02 Salomon & Fils F Ski binding
US20120104707A1 (en) * 2010-10-29 2012-05-03 Salomon S.A.S. Safety binding for skiing
US8936252B2 (en) * 2010-10-29 2015-01-20 Salomon S.A.S. Safety binding for skiing

Also Published As

Publication number Publication date
JPS4820556U (en, 2012) 1973-03-08
JPS5215308Y2 (en, 2012) 1977-04-06

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