US 3807748 A
A heel hold-down device for ski bindings intended to permit a ready and easy adjustment, both coarse and fine, of the device for a wide range of ski boot sizes. It comprises essentially a slideway forming base plate slidably engaged by a retaining member and also by the body of the heel hold-down device, screw-means interconnect the retaining member and the body for the fine adjustment. The retaining member has fulcrumed therein a control lever having an inner projection engaging rack means along one longitudinal edge of an aperture formed in the bottom of said base plate. Said rack may have square shaped teeth or a sawtooth.
Description (OCR text may contain errors)
United States Patent 1191 Ra millon 1451 Apr. 30, 1974 SK] BINDING HEEL HOLD-DOWN DEVICE Prima ExaminerRobert R. Song  lnventor: Rene Ramlllon 2450-42 Avenue,
Grenoble, Frag 94116 Attorney, Agent, or Fzrm--Kar1 F. Ross; Herbert Dubno  Filed: Sept. 11, 1972  Appl. No.: 288,085  ABSTRACT A heel hold-down device for ski bindings intended to  Foreign Application Priority Data permit a ready and easy adjustment, both coarse and S t 22 1971 F 71 34734 fine, of the dev1ce for a w1de range of sk1 boot s1zes. 1t ep rance comprises essentially a Slideway forming base plate slidably engaged by a retaining member and also by the body of the heel holddown device, screw means  i H 35 H interconnect the retaining member and the body for I the fine adjustment. The retaining member has ful- 56] References Cited crumed therein a control lever having an inner projection engaging rack means along one longitudinal edge UNITED STATES PATENTS of anaperture formed in the bottom of said base plate. 2,950,119 8/1960 Gembuch 280/1135 T Said rack may have square shaped teeth or a saw- 3,408,087 10/1968 Ramillon 280/1135 T tooth; 3,531,135 9/1970 Salomon 280/1135 T Y 2,823,397 2/1958 Wagner 280/1135 T 6 hums, 5 Drawlng Flgures 1 SKI BINDING HEEL HOLD-DOWN DEVICE This invention relates in general to ski bindings and has specific reference to heel hold-down devices therefor.
As a rule, ski bindings comprise in all cases means for adjusting them'as a function of the ski boot size; however, so far as the Applicant is aware, none of the hitherto proposed ski bindings comprises means permitting .b oth fine and coarse adjustment through a very wide range of boot sizes. Thus, it has not been possible to use the same ski binding for a relatively wide range of sizes, such as 4-11, or 6-12.
While the ski-binding adjustment is no problem for a skier having his personal outfit so that an adjustment is required only when he purchases his bindings or changes from one pair of ski boots to another, this does not apply to ski outfits let out for hire and therefore expected to be used by many skiers wearing a wide range of boot sizes; obviously, in this case it is desirable to be able to make very fast adjustments through relatively wide size ranges. v
It is the primary object of the present invention to provide means for solving the problem set forth hereinabove, in the form of a heel hold-down device for a ski binding. The device according to the invention comprises a body slidably mounted in a fixed slideway having a rear extension, well beyond said body, and comprising teeth or notches engageable by at least one catch rigid with a control lever fulcrumed to a retaining member slidably mounted in the slideway, the body being adapted to bear on the retaining member.
A clearer understanding of the present invention will be had from the following description, reference being made to the accompanying drawing illustrating diagrammatically an embodiment of the heel hold-down device according to the invention. In the drawing:
FIG. 1 is a side-elevational view of the device fitted to a ski;
FIG. 2 is a plan view from above of the slidewayforming base plate receiving the body of the device;
FIGS. 3 and 4 are a cross-sectional view taken along the lines 3-3 and a longitudinal section taken along the line 4-4 of FIG. 3, respectively, and
FIG. 5 is a plan view from above showing a modified embodiment of the slideway-forming base plate.
Referring first to FIG. I, the reference numeral 2 designates a ski and 3 is the heel hold-down device of the ski binding, this device being of any type or design. The heel hold-down device 3 is secured to the ski by means of a base plate along which it is adapted to move longitudinally.
This base plate designated at 4 in FIGS. 1 4 comprises means for fixing same to the top surface of the ski 2, and a pair of longitudinal side edges 5 shaped to constitute slideways engageable for longitudinal translation but retained in the vertical direction by the body 3 of the device and also by a retaining member 6. It may be seen that the length of this base plate 4 is sufficient to enable its lateral slideways 5 to extend to the rear through a distance representing substantially twice the length of the body 3. Formed through the bottom of said base plate 4 is an elongated aperture 7 and one longitudinal side of this aperture is cut (notched) to constitute a rack 8.
The retaining member 6 slidably engaged in the slideways 5 of plate 4 comprises a socket 9 receiving freely therein the nonthreaded rear portion of a screwthreaded rod 10 engaging a corresponding nut-forming portion of the body 3. Concentric to said socket 9 is a pivot-forming portion 12 receiving a control lever or lug 13 extending through a window 14 cut in the lateral wall of the retaining member 6. At its end opposite to that constituting the control lever 13 the member pivoted to said socket 12 has an extension in the form of at least one stud or car 15 projecting through the aperture 7 of plate 4 in order to engage at least one notch or tooth of rack 8 with the assistance of a torsion spring As a consequence of the spring loaded locking engagement between the retaining member 6 and the base plate 4, this member 6 is stationary but also adapted to be shifted in the longitudinal direction for adjusting at will the position of the heel hold-down device 3. v
This adjustement is substantially instantaneous, irrespective of the boot size. In fact, it is only necessary to exert a pressure against the force of spring 16 on the control lever 13, so that the studs 15' are released from the notches or teeth of rack 8; thus, the retaining member 6 can be set very easily through a relatively long stroke along the base plate 4, in either direction, and carry along the heel hold down device 3.
When the manual pressure thus exerted for adjustment purposes on lever 13 is discontinued, the spring 16 restores this lever to its inoperative or locked position, in which the studs 15 re-engage the notches or teeth of rack 8.
From the foregoing it will be readily apparent that the retaining member 6 and therefore the heel holddown device 3 associated therewith can be moved along the base plate 4 until the desired position is attained or nearly attained, the subsequent fine adjustment, if necessary, being performed by rotating the screw rod 10.
In the modified embodiment illustrated in FIG. 5, the aperture 77a cut through the base plate 4a comprises a longitudinal edge formed not with rack teeth but with saw-teeth 8a, i.e. teeth having one side inclined and the other side perpendicular to the longitudinal axis of the assembly.
The advantage deriving from this embodiment is that it is not necessary to depress the manual control lever for moving the retaining member 6 and therefore the heel hold-down device or body 3 forward, In fact, in this direction the stud or studs 15 of lever 13 escape from the top of teeth 8a during the movement of the body 3 and retaining member 6.
Of course, various modifications may be made in the specific embodiment shown and described herein without departing from. the basic principle of the invention as set forth in the appended claims, as will readily occur to those conversant with the'art.
What I claim is:
1. In a ski binding, a heel hold-down device comprising a slideway adapted to be fixed to a ski; a body slidably mounted in said slideway and engageable with a ski boot, said slideway being formed with a base plate provided with an elongated through aperture extending longitudinally, one edge of said aperture being formed with teeth; a retaining member slidably engaging said slideway; screw means adjustably interconnecting said body and said retaining member; and a control lever fulcrumed in said retaining member and extending through a window formed in said retaining member, said lever comprising an external projection for manipulating same and an internal projection in the form of a stud adapted releasably to engage said teeth.
2. The device defined in claim 1 wherein said base plate is secured to the ski and is formed with a pair of inwardly turned longitudinal edges adapted to constitute the slideway engaged by said body and said retaining member.
3. The device defined in claim 2 wherein said teeth along said one edge of said elongated aperture are of square and constitute a rack.
4. The device defined in claim 2 wherein said teeth are of sawtooth configuration, each tooth having an oband forming a fulcrum for said lever.