US3348855A - Safety toe iron for ski bindings - Google Patents

Safety toe iron for ski bindings Download PDF

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Publication number
US3348855A
US3348855A US558463A US55846366A US3348855A US 3348855 A US3348855 A US 3348855A US 558463 A US558463 A US 558463A US 55846366 A US55846366 A US 55846366A US 3348855 A US3348855 A US 3348855A
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United States
Prior art keywords
ski
spring
sole
piston
toe
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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
US558463A
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English (en)
Inventor
Marker Hannes
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Marker International Co
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Individual
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Assigned to MARKER-PATENTVERWERTUNGSGESELLSCHAFT MBH., A SWISS CORP. reassignment MARKER-PATENTVERWERTUNGSGESELLSCHAFT MBH., A SWISS CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MARKER, HANNES
Anticipated expiration legal-status Critical
Assigned to MARKER INTERNATIONAL COMPANY reassignment MARKER INTERNATIONAL COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MARKER-PATENTVERWERTUNGSGELLSCHAFT GMBH
Expired - Lifetime legal-status Critical Current

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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
    • A63C9/08585—Details of the release mechanism using transverse biasing element
    • 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
    • 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
    • A63C9/085—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
    • A63C9/08564—Details of the release mechanism using cam or slide surface
    • 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
    • A63C9/0802—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings other than mechanically controlled, e.g. electric, electronic, hydraulic, pneumatic, magnetic, pyrotechnic devices; Remote control

Definitions

  • the sole holder of the toe iron is movable only transversely to the longitudinal direction of the ski for a large distance until the release position has been reached and is then capable of a guided forward movement;
  • a return spring tends to return the sole holder to its normal position in any position of the sole holder
  • the return spring consists of a container for a compressed gas, which container has a volume which is variable by a plunger, which is operated in response to a displacement of the sole holder, the change in volume between the two limiting positions of the plunger being small compared to the total volume of the container for compressed gas.
  • the considerations which have led to the invention are based on the recognition that the power which is absorbed or applied by an ordinary toe iron and which corresponds to the product of large force short distance short time can also be applied by a toe iron which opposes the lateral forces only with a small force so that large lateral forces cannot become effective or, in other words, cannot act suddenly on the foot.
  • the cushioning distance must be large enough with the toe irons according to the invention.
  • FIG. 2 a sectional side elevation showing an embodiment of the invention with a gas spring according to FIG. 1,
  • FIG. 3 a top plan view showing the embodiment of FIG. 2,
  • FIG. 4 a view similar to FIG. 4 in release position, without top part
  • FIG. 5 a sectional side elevation showing a second embodiment
  • FIG. 6 a top plan view showing the embodiment of FIG. 5 without top part
  • FIG. 7 a top plan view showing another embodiment of the invention having a gas spring element
  • FIG. 9 another sectional side elevation showing the embodiment of FIGS. 7 and 8, a
  • FIG. 10 a horizontal sectional view showing the embodiment of FIGS. 7 to 9,
  • FIG. 12 a sectional side elevation showing another embodiment of the invention comprising a gas spring
  • FIG. 13 a top plan view showing the same embodiment.
  • FIG. 14 the gas spring mounting of the embodiment of FIGS. 12 and 13 with base and slide plates
  • FIG. 15 a top plan view showing the details of FIG. 14.
  • FIG. 1 is a sectional view showing a gas spring element.
  • a piston 126 having a piston rod 129 is slidably arranged in a gas spring cylinder 125. Cylinder is sealed against piston rod 129 by a sealing system 130, which serves also for guiding the piston rod 129.
  • the closed cylinder space 125 is divided by piston 126 into two chambers 131 and 132 and is under a high internal gas pressure. As the two chambers 131 and 132 communicate with each other by axial bores 127, 128 in the piston, the same pressure prevails in both chambers and the piston does not serve as a sealing and compressing element but only as a plunger.
  • Connecting bores 127, 128 provide for an immediate equalization of pressure in both chambers upon 'a displacement of the piston.
  • a the top face 133 of the piston is larger by the cross-sectional area of the piston rod than the bottom face 134 of the piston, a force corresponding to the product of pressure and of the area of the cross-section of the piston rod acts constantly in the direction of the arrow on the piston. As a result, the piston is always urged towards its lower dead center position, in which it engages the sealing system 130.
  • piston rod 129 and the piston 126 When piston rod 129 and the piston 126 are urged into cylinder 125, they must overcome the force which is determined by the pressure and the cross-sectional area of the piston rod. As the internal pressure remains virtually unchanged because the volume of cylinder 125 is only slightly changed by the entrance of piston rod 129 into cylinder space 125, the force by which the spring element opposes a displacement of the piston remains approximately constant whereas this force progressively increases in the known spring elements. It is sufficient to provide connecting bores 127 and 128 which have a sufficiently large cross-section so that the equalization of pressure between chambers 131 and 132 can take place immediately even upon a rapid displacement.
  • FIGS. 2 to 4 show an embodiment of a safety toe iron according to the invention, in which a commercially available gas spring according to FIG. 1 is used as a spring element.
  • a gas spring 3 lies along the axis of the ski between a top part 1 and a bottom part 2. Parts 1 and 2 are secured to the ski.
  • An extension 16 of a sole holder 8 is guided and held between parts 1 and 2 by pins 9 and 10, which enter the slot 13 of extension 16.
  • a cam 17 of a sole holder 8 is engaged by a piston rod 4 of gas spring 3.
  • a yoke 5 is secured to this piston rod and by means of a pin 7 carries a rotatably mounted roller 6.
  • FIGS. 5 and 6 show another embodiment of the inven-. tion, in which a different spring element is used.
  • the toe iron comprises a top part and a bottom part 21, which are secured to the surface of the ski.
  • a chamber 22 forms together with a flexible diaphragm 24 a container for compressed air and is firmly screwed to parts 20 and 21.
  • Diaphragm 24 acts also as a sealing element.
  • Piston 25 acts on diaphragm 24 and engages cam 41 of sole holder 33 by a piston rod 26, mounted in a bearing 27, and a yoke 28 mounting a roller 29 by means of a pin 30.
  • sole holder 33 has an extension 34, which is mounted between parts 20 and 2]..
  • Sole holder 33 is held and guided in a slot 35 of extension 34 by pins 31 and 32. Owing to the design of cam slot 35, a lateral movement of sole holder 33 can be performed initially transversely to the longitudinal direction of the ski. Upon such movement, the rolling movement of rollers 29 on cam 41 imparts to piston 25 a longitudinal movement so that piston 25 is forced by diaphragm 24 into the container 22 for compressed air. As the movement of the plunger results only in a relatively small change in volume of chamber 22, the pressure within chamber 22 is hardly changed from the pressure in the normal position of the plunger. As a result, there is only a slight increaseof the back-pressure, which equals the product of the pressure within chamber 22 and the piston area.
  • FIGS. 7 to 11 show a further embodiment of the invention comprising a gas spring element.
  • a gas spring 58 is transverse to the longitudinal axis of the ski and is longitudinally slidably mounted in. a mounting 51'of a baseplate 50, which is fixedly screwconnected to the ski.
  • the gas spring 58 bears on abut- I ments 56, 57 of the holder 51 and on abutments 54, 55 of an extension 53 of the sole holder.
  • one of the lateral abutments 54, 55 is screW-connectedto mounting 51 after the spring 58 has been introduced into the mounting.
  • Extension 53 of sole holder 52 engages the mounting 51 and gas spring 58 from below and is held and guided in cam groove 65 of baseplate 50 by rollers 62, 64 mountedon pins 61, 63, which are secured in extension 53..
  • sole holder 52 and its extension 53 are capable of a lateral movement, which is only transverse.
  • FIGS. 12 to 15 Another embodiment comprising a gas spring element is apparent from FIGS. 12 to 15.
  • a gas spring 97 lies also transverse by the longitudinal direction of the skibetween angled spring mountings 93, 95, which have interdigitating, forked guides 94, 96 and are slidably mounted in baseplate 75. Extensions 107, 108, 109 of the guides are disposed in recesses 102, 103, 110 of baseplate 75 and supported by said baseplate. During a displacement of spring mountings 93 and 95, cams 107, 108, 109 provide an additional guidance for said mountings.
  • the forked guides 94, 96 have extensions 104, 105, 106, which engage recesses 99, 100, 101 of a slide plat 86, which is connected by a pin 81 to sole holder 74.
  • the slide plate 86 is held and guided in cam grooves 91, 92 of by rollers 88, 90, which are mounted on pins 87, 89 secured in slide plate 86.
  • the cover plate 76 and 'baseplate 75 are firmly secured to the ski by screws 112, 113. This prevents a lifting of spring mountings 93, 95 and of slide plate 86 and sole holder 74.
  • Further means to prevent lifting comprise a third screw 114 for fixing the baseplate 75 and a shoulder pin 81 for guiding the sole holder 74 in groove 116 of baseplate 75.
  • An axial movement of pin 81 is preventd by its shoulder 117 and a lock screw 115.
  • Sole holder 74 is provided by pin 81 to slide plate 86 and bears on the cam 77 of cover plate 76 by rollers 82, 84 mounted on pins 83, 85, which are secured to the extension of the sole holder.
  • guides 77, 91, 92, 116 enable a movement of sole holder 74 and slide plate 86in a lateral direction, which is transverse to the longitudinal axis of the ski.
  • slide plate 86 causes 'by means of an extension 104, which is disposed in recess 99 of slide plate 86, a guidance of spring mounting 93 in an inward direction toward the longitudinal center line of the ski so that a longitudinal movement is imparted to piston rod 98 and to the piston of gas spring 97.
  • the gas spring 97 bears on spring mounting 95.
  • a friction-reducing layer 111 e.g., of plastic material, is provided between mountings 93, 95 and the baseplate.
  • gas spring 97 has an almost constant spring rate, the force which opposes the pivotal movement of the foot is practically constant in all positions.
  • one of the backing rollers 82, 84 of sole holder 79 slides from cam 77 into cam slot branches 78, 79, which are directed forwardly toward the tip of the ski so that the sole holder 74 is additionally capable of a pivotal movement to release the foot.
  • Gas spring 97 which is not shown in FIGS. 11 and 12, can be secured by rigid connections between piston rod 98 and mounting 93 and between the spring cylinder and mounting 95. Alternatively, the gas spring 97 must be longitudinally slidably mounted on the cover plate 76.
  • a toe iron for safety ski bindings comprising a base means attached to a ski, said base means being formed with a guide surface extending transversely to the longitudinal direction of the ski, the length of which corresponds approximately to the range of foot-twist occurring during harmless lateral jolts, and terminating in guide faces which are inclined sharply forwardly to said transverse guide surface, a sole-retaining member carried by said base means, said sole-retaining member being positioned for movement along said guide surface and being biased by a return spring means carried by said base means and acting upon said sole-retaining member in every position to bias the sole-retaining member towards its normal sole-retaining position, said return spring means comprised of a container for a compressed gas, a plunger carried by said container, the volume of said container being variable by said plunger which is positioned for engagement by said sole-retaining means and is operated in response to a displacement of the sole-retaining member,
  • the change in volume between the two limiting positions of the plunger being small compared to the total volume of the container for compressed gas.
  • a toe iron according to claim 1 characterized in that said container has a wall part in the form of a flexible diaphragm, and the plunger bears on the outside of the diaphragm.
  • a toe iron according to claim 1 characterized in that the sole-retaining member has a return cam surface and is guided by means of a slot, which extends transversely to the longitudinal direction of the ski and has forwardly curved end positions, and which cooperates with pins, which extend at right angles to the surface of the ski and are secured to said base means, and the container for compressed gas is mounted rigid with respect to the ski and the plunger bears against the return cam face of the sole-retaining member.
  • each of the cylinder and piston rod ends of the return spring means bears partly on an abutment face which is rigid with respect to the ski and partly on an abutment face which is movable with the sole-retaining mem her.
  • the sole-retaining member includes a sole-retaining element pivotally mounted to a drive plate, which is displaceable transversely to the longitudinal direction of the ski, and the sole-retaining element in normal position bears with two backing rollers on an abutment surface formed on said base means, one of said backing rollers clearing said abutment surface upon a transverse displacement of a predetermined extent, the return spring means being mounted between two abutment plates, each of which is provided on an angle member, one of the abutment plates being caused to follow a movement of the sole-retaining member, the other abutment plate being held in its initial position, said angle members extending parallel to the surface of the ski and being forked and interdigitated.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Fluid-Damping Devices (AREA)
  • Basic Packing Technique (AREA)
  • Threshing Machine Elements (AREA)
US558463A 1965-06-21 1966-06-17 Safety toe iron for ski bindings Expired - Lifetime US3348855A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0065665 1965-06-21

Publications (1)

Publication Number Publication Date
US3348855A true US3348855A (en) 1967-10-24

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ID=7311530

Family Applications (1)

Application Number Title Priority Date Filing Date
US558463A Expired - Lifetime US3348855A (en) 1965-06-21 1966-06-17 Safety toe iron for ski bindings

Country Status (7)

Country Link
US (1) US3348855A (enrdf_load_stackoverflow)
AT (1) AT277837B (enrdf_load_stackoverflow)
CH (1) CH452416A (enrdf_load_stackoverflow)
DE (1) DE1478143C3 (enrdf_load_stackoverflow)
ES (1) ES328185A1 (enrdf_load_stackoverflow)
GB (1) GB1137112A (enrdf_load_stackoverflow)
NO (1) NO117680B (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630537A (en) * 1968-07-11 1971-12-28 Smolka & Co Wiener Metall Ski safety binding
US3682494A (en) * 1969-06-19 1972-08-08 Hans Otto Frisch Toe iron for safety ski bindings
US3692322A (en) * 1969-07-04 1972-09-19 Marker Hannes Toe- or heel-holding device for safety ski bindings
US3801120A (en) * 1970-02-07 1974-04-02 Ver Baubeschlag Gretsch Co Supporting device of a ski safety binding
US3888498A (en) * 1972-11-15 1975-06-10 Gertsch Ag Releasable ski binding
US3893685A (en) * 1973-05-30 1975-07-08 Gertsch Ag Safety ski binding
US4129245A (en) * 1977-06-30 1978-12-12 Bonvallet Duane J Acceleration compensated device for ski bindings
US6029984A (en) * 1996-07-03 2000-02-29 Pivotto; Elia Giovanni Sprung skate with aligned wheels
WO2012104442A1 (es) * 2011-01-31 2012-08-09 Azol-Gas, S. L. Resorte de gas

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2035083A (en) * 1982-08-25 1984-03-29 Bio-Mec Ski Industries Inc. Body weight support system
USRE32650E (en) * 1982-08-25 1988-04-26 Body weight support system
US4727862A (en) * 1986-12-01 1988-03-01 Waddell Thomas P Floating center splint or hinge

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079164A (en) * 1959-08-21 1963-02-26 Place Henri De Safety knock-off devices for ski binders
US3224786A (en) * 1962-06-14 1965-12-21 Reuge Sa Safety stop for ski attachment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079164A (en) * 1959-08-21 1963-02-26 Place Henri De Safety knock-off devices for ski binders
US3224786A (en) * 1962-06-14 1965-12-21 Reuge Sa Safety stop for ski attachment

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630537A (en) * 1968-07-11 1971-12-28 Smolka & Co Wiener Metall Ski safety binding
US3682494A (en) * 1969-06-19 1972-08-08 Hans Otto Frisch Toe iron for safety ski bindings
US3692322A (en) * 1969-07-04 1972-09-19 Marker Hannes Toe- or heel-holding device for safety ski bindings
US3801120A (en) * 1970-02-07 1974-04-02 Ver Baubeschlag Gretsch Co Supporting device of a ski safety binding
US3888498A (en) * 1972-11-15 1975-06-10 Gertsch Ag Releasable ski binding
US3893685A (en) * 1973-05-30 1975-07-08 Gertsch Ag Safety ski binding
US4129245A (en) * 1977-06-30 1978-12-12 Bonvallet Duane J Acceleration compensated device for ski bindings
US6029984A (en) * 1996-07-03 2000-02-29 Pivotto; Elia Giovanni Sprung skate with aligned wheels
WO2012104442A1 (es) * 2011-01-31 2012-08-09 Azol-Gas, S. L. Resorte de gas

Also Published As

Publication number Publication date
DE1478143B2 (de) 1974-01-10
CH452416A (de) 1968-05-31
GB1137112A (en) 1968-12-18
AT277837B (de) 1970-01-12
DE1478143A1 (de) 1970-08-13
ES328185A1 (es) 1967-04-01
NO117680B (enrdf_load_stackoverflow) 1969-09-08
DE1478143C3 (de) 1974-08-08

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Legal Events

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AS Assignment

Owner name: MARKER-PATENTVERWERTUNGSGESELLSCHAFT MBH., BAAR, S

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MARKER, HANNES;REEL/FRAME:004089/0014

Effective date: 19820804

AS Assignment

Owner name: MARKER INTERNATIONAL COMPANY, P.O. BOX 26548, SALT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MARKER-PATENTVERWERTUNGSGELLSCHAFT GMBH;REEL/FRAME:004906/0245

Effective date: 19880331

Owner name: MARKER INTERNATIONAL COMPANY,UTAH

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MARKER-PATENTVERWERTUNGSGELLSCHAFT GMBH;REEL/FRAME:004906/0245

Effective date: 19880331