US3897958A - Ski binding - Google Patents

Ski binding Download PDF

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Publication number
US3897958A
US3897958A US373266A US37326673A US3897958A US 3897958 A US3897958 A US 3897958A US 373266 A US373266 A US 373266A US 37326673 A US37326673 A US 37326673A US 3897958 A US3897958 A US 3897958A
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US
United States
Prior art keywords
levers
face
spring
piece
boot
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
US373266A
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English (en)
Inventor
Bernard Sentou
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.)
Mitchell SA
Original Assignee
Mitchell SA
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Filing date
Publication date
Application filed by Mitchell SA filed Critical Mitchell SA
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Publication of US3897958A publication Critical patent/US3897958A/en
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    • 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
    • A63C9/08571—Details of the release mechanism using axis and lever
    • 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
    • A63C9/08507—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 plurality of mobile jaws
    • A63C9/08521—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 plurality of mobile jaws pivoting about a vertical axis, e.g. side release

Definitions

  • the central plane face of the piece is extended by two lateral faces inclined to- [56] References Cited wards the direction of the spring, and against which a UNITED STATES PATENTS respective part of a lever bears when it is moved apart from the other jaw by the application of a lateral 3.380.750 4/1968 Salomon 280/1135 T form 3.463.503 8/1969 5 T 3.572.738 3/l97l Martin 280M T 4 Claims, 5 Drawing Figures SK] BINDING The present invention relates to safety ski bindings.
  • a known type of safety ski binding for freeing a boot subjected to a given lateral force comprises two levers pivotally mounted about vertical axes, one end of each lever forming a jaw for holding a boot sole, elastic means constantly urging the second ends of the levers to hold the two jaws in a closed boot-holding position, an intermediary piece movable parallel to the axis of compression of the eleastic means being interposed between the elastic means and the second ends of the levers.
  • An object of the invention is to provide a new binding of this type which is of simple and economic construction and is sure in operation.
  • a safety ski binding according to the invention is characterized in that the intermediary piece has a central part having a plane face opposite a face against which the elastic means bears, disposed substantially perpendicular to the axis of compression of the elastic means and on which the second ends of the levers bear when the jaws are in said closed position, and two faces adjacent to said central part and inclined towards the elastic means, the second end of a lever bearing on a respective one of said inclined faces when the respective jaw is opened by a certain angle.
  • FIG. 1 is a diagrammatic plan view of a first embodiment of binding in its normal use position, locking a boot in place;
  • FIG. 2 shows the same binding in a position corresponding to freeing of the boot by the exertion of a given lateral force
  • FIG. 3 is a perspective view of an intermediary piece of the first embodiment
  • FIG. 4 is a simplified plan view, partially in cross section, of a second embodiment of binding.
  • FIG. 5 is a view similar to FIG. 4 of a third embodi ment.
  • the binding shown comprises two lateral levers 1,2 which are pivotally mounted about respective axes 3,4 fixed in parallel spaced-apart relation perpendicular to a base plate, not shown, adapted to be secured on the upper surface of a ski.
  • the principal or first arms of levers 1,2 terminate at their free ends by jaws 5 and 6 which are shaped so as to embrace the front end of the sole of a boot 7 to be held.
  • the levers 1,2 also include inwardly-directed second arms 8 and 9 the adjacent free ends of which are pushed towards the right of the Figure by a compression spring 10, the action of this spring being trans mitted by means of a mobile intermediary piece 11.
  • the piece 11, which is best seen in FIG. 3, takes the form of a plate bent into three planar sections, a central section 18, having a rear face against which an end of the spring 10 acts and a front face against which the ends of arms 8 and 9 are applied as shown in FIG. 1, and two lateral sections 12 and 13 each inclined at an obtuse angle a with the rear face of central section 18.
  • These inclined lateral sections 12,13 instead of being planar, alternatively could be convex or concave, and the piece 11 could be of overall trapezoidal shape rather than rectangular as shown.
  • the piece 11 could also be a surface of revolution i.e. a disc or washer, with a single frusto-conical or other inclined lateral surface.
  • the intermediary piece I] is free to move in the longitudinal direction of spring 10 inside a housing 15 of the binding frame, the edges of this housing 15 serving to guide the piece 11 for sliding movement along housing 15 to the exclusion of any rotation about the axis of spring 10.
  • the piece 11 is, however. free to tilt slightly about an axis parallel to axes 3 and 4.
  • a pair of fixed stop members 16 and 17 are provided for limiting the movement of arms 8 and 9 under the action of spring 10.
  • the piece 11 becomes inclined, as shown in FIG. 2, so that from the moment when the end of arm 9 contacts the face of section 13, this section 13 is oriented almost tangential to the trajectory of the end of arm 9, whereby the force of compression of spring 10 remains approximately constant while the end of arm 9 coacts with section 13.
  • the boot 7 can thus continue its movement in the direction of arrow F without encountering any additional resistance, and can thus be freed.
  • the arm 8 of lever 1 remains stationary, applied against its stop member 16.
  • the binding shown in FIG. 4 comprises a pair of lateral levers 21,22 pivotally mounted about respective parallel, spaced-apart shafts 23,24 which are fixed perpendicular to a base plate, not shown.
  • the free ends of the main arms of levers 21,22 form jaws 25,26, respectively.
  • the levers 21,22 also include short inwardly projecting arms 28,29 having inner plane faces 28',29' perpendicular to the main arms of the levers.
  • the arms 28,29 are permanently urged by a compression spring 30 the force of which is transmitted by an intermediary mobile piece 31 having the cross-sectional shape shown.
  • arms 28,29 cooperate with a stationary stop member 36 secured on the binding frame, which enables limitation of the pivoting of the levers under action of spring 30 in the clockwise direction for lever 22 and in the counter-clockwise direction for lever 21.
  • faces 28', 29' of arms 28,29 are both applied against a central plane face 38 of piece 31.
  • This central plane face 38 is extended laterally by two adja cent inclined faces 32,33, which are inclined generally in the direction of spring 30, for the purpose of enabling release in a similar manner to that previously described.
  • the piece 31 and spring 30 are guided by a fixed rod 39 in the form of the shank of a screw with a head 40, this rod or shank passing through a central aperture in the stop member 36 and a central bore in piece 31.
  • the piece 31 is fitted about the rod 39 with a play allowing a limited tilting of the piece 31, as shown, during the boot-releasing operation.
  • a nut 34 which is prevented from turning by engagement with a part of the binding frame (not shown), is screwed on the threaded end of rod 39 and serves as a stop for the other end of spring 30.
  • a pair of lateral levers 41,42 pivotally mounted about shafts 43,44 have jaws 45,46 at the free ends of main arms thereof.
  • the levers also have short arms 48,49 projecting inwardly from the respective shafts 43,44 and which carry fitted parts 48,49' of triangular cross-section (in a plane per pendicular to the shafts 43,44) serving as points of Contact of the levers 41,42 with an intermediary mobile piece 51.
  • the ends 48,49 of the levers are permanently urged by a spring 50, through the piece 51, towards a stationary stop 56 secured on the binding frame.
  • the piece 51 has a central plane face 58 extended by two lateral faces 52,53 which are inclined towards the spring 50, these faces 52,53 being slightly concave in this embodiment.
  • the piece 51 and spring 50 are guided by the shank of a screw 59 which passes, without play, through a bore in piece 51.
  • a nut 54 held against rotation by cooperation with a part of the binding frame (not shown), is screwed on the threaded end of screw 59 and forms a support for the other end of spring 50.
  • the triangular piece 48' leaves the central plane face 58 and its inner edge slides over the inclined face 52 without further compressing spring 50, i.e. without displacing the piece 51.
  • This can be achieved by making the inclined concave faces 52,53 approximately concentric to the shafts 43,44 (when the piece 51 is in the appropriate position) so that when the edge of triangular piece 48' or 49' slides over the respective surface 52,53, the piece 51 is not pushed against the action of the spring 50. Therefore, to achieve movement, only a frictional force between the said edge and the surface of piece 51 has to be overcome.
  • arms 8,9; 28,29 or 48,49 could be provided with rolling means such as balls, rollers or pulleys so as to replace the sliding friction against the faces 12,13; 32,33; or 52,53 by a rolling friction.
  • Regulation of the bindings eg. to provide a suitable jaw separation, can be achieved simply by providing means for adjusting the position of the stop members 16,17; 36; and 56 respectively.
  • the invention is applicable to many types of safety ski bindings, particularly toe bindings, whenever it is desired to provide a maximum security against the danger of excessive lateral forces, by simple and economic means which are suitable for providing easy and reliable regulation.
  • a safety ski binding comprising; two levers, each having first and second ends; two jaw means, each provided on the first end of one of said levers, for jointly holding a boot sole and for lateral movement to release the boot sole in response to a lateral force acting on the boot;
  • said plate having a central face transverse of said longitudinal direction, having two lateral faces contiguous with and rearwardly inclined to said central face and having rear surfaces of said central and lateral faces which hold said plate substantially centered on said spring means;
  • Binding according to claim 1 including fixed stop means for limiting pivoting movement of said levers,

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US373266A 1972-06-29 1973-06-25 Ski binding Expired - Lifetime US3897958A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7223917A FR2190486B1 (enrdf_load_stackoverflow) 1972-06-29 1972-06-29

Publications (1)

Publication Number Publication Date
US3897958A true US3897958A (en) 1975-08-05

Family

ID=9101225

Family Applications (1)

Application Number Title Priority Date Filing Date
US373266A Expired - Lifetime US3897958A (en) 1972-06-29 1973-06-25 Ski binding

Country Status (6)

Country Link
US (1) US3897958A (enrdf_load_stackoverflow)
AT (1) AT324184B (enrdf_load_stackoverflow)
CA (1) CA979043A (enrdf_load_stackoverflow)
CH (1) CH570814A5 (enrdf_load_stackoverflow)
FR (1) FR2190486B1 (enrdf_load_stackoverflow)
IT (1) IT990779B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6588791B1 (en) * 1998-11-16 2003-07-08 Look Fixations S.A. Safety binding for ski boot

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT339189B (de) * 1975-12-12 1977-10-10 Smolka & Co Wiener Metall Vorderbacken
FR2627392B1 (fr) * 1988-02-24 1990-08-03 Salomon Sa Fixation de securite pour ski

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3380750A (en) * 1965-06-14 1968-04-30 Georges P.J. Salomon Front safety attachment for skis
US3463503A (en) * 1966-08-20 1969-08-26 Paul Unger Safety means for ski bindings with vertical bolt
US3572738A (en) * 1968-10-04 1971-03-30 Hans Martin Securing head for safety ski bindings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3380750A (en) * 1965-06-14 1968-04-30 Georges P.J. Salomon Front safety attachment for skis
US3463503A (en) * 1966-08-20 1969-08-26 Paul Unger Safety means for ski bindings with vertical bolt
US3572738A (en) * 1968-10-04 1971-03-30 Hans Martin Securing head for safety ski bindings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6588791B1 (en) * 1998-11-16 2003-07-08 Look Fixations S.A. Safety binding for ski boot

Also Published As

Publication number Publication date
AT324184B (de) 1975-08-25
FR2190486A1 (enrdf_load_stackoverflow) 1974-02-01
CH570814A5 (enrdf_load_stackoverflow) 1975-12-31
DE2332655A1 (de) 1974-01-24
FR2190486B1 (enrdf_load_stackoverflow) 1978-11-10
DE2332655B2 (de) 1977-04-07
CA979043A (en) 1975-12-02
IT990779B (it) 1975-07-10

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