U.S. patent application number 15/004085 was filed with the patent office on 2016-09-29 for splitboard boot binding system with adjustable highback.
This patent application is currently assigned to SPARK R&D IP HOLDINGS, LLC. The applicant listed for this patent is William J Ritter. Invention is credited to William J Ritter.
Application Number | 20160279505 15/004085 |
Document ID | / |
Family ID | 56128320 |
Filed Date | 2016-09-29 |
United States Patent
Application |
20160279505 |
Kind Code |
A2 |
Ritter; William J |
September 29, 2016 |
SPLITBOARD BOOT BINDING SYSTEM WITH ADJUSTABLE HIGHBACK
Abstract
An improved highback adjustment system for a splitboard boot
binding. A captive strut is mounted on the spine of the highback,
the strut having a forward lean adjustor block such that rotation
or sliding of the block lengthens or shortens the strut. The
combination provides a broadly adjustable range of forward lean
bias in small increments and the block is readily disengaged and
stowed on the highback when not needed. Advantageously, the
mechanism that can be operated and adjusted without tools, even
with gloved hands, a significant benefit in winter conditions, and
does not jam with snow. Methods of use of the improved forward lean
adjustor and highback are also disclosed.
Inventors: |
Ritter; William J; (Bozeman,
MT) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Ritter; William J |
Bozeman |
MT |
US |
|
|
Assignee: |
SPARK R&D IP HOLDINGS,
LLC
Bozeman
MT
|
Prior
Publication: |
|
Document Identifier |
Publication Date |
|
US 20160175691 A1 |
June 23, 2016 |
|
|
Family ID: |
56128320 |
Appl. No.: |
15/004085 |
Filed: |
January 22, 2016 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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62109149 |
Jan 29, 2015 |
|
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A63C 10/24 20130101;
A63C 10/20 20130101; A63C 9/02 20130101; A63C 5/02 20130101; A63C
10/06 20130101; A63C 10/04 20130101 |
International
Class: |
A63C 10/20 20060101
A63C010/20; A63C 9/00 20060101 A63C009/00; A63C 5/02 20060101
A63C005/02 |
Claims
1. A highback for a splitboard boot binding system with heel cup,
which comprises an adjustable length strut mounted on a pivot pin
in a channel disposed along the spine of the highback body member,
said adjustable length strut having a forward lean adjustor block,
wherein said block is threadably rotatable on a captive jack screw
affixed to said pivot pin and seats endwise on a top rim of said
heel cup, said block acting to extend or retract said strut length
in half turn increments.
2. The highback of claim 1, wherein said forward lean adjustor
block is enabled to be hingedly pivoted to an inverted position on
said pivot pin so as to be fully disengaged, wherein said channel
comprises two walls contralaterally disposed thereon, and further
wherein said walls are configured to receive and secure said block
in said inverted position.
3. The highback of claim 2, further comprising a pivot pin cradle
formed by said walls, and said pivot pin is mounted transversely
between said walls.
4. The highback of claim 1, wherein said jack screw has 12 to 30
threads per inch, more preferably about 25 threads per inch, and is
threaded into said pivot pin at a first end.
5. The highback of claim 1, wherein said jack screw is threaded
into said forward lean adjustor block at a second end, and said
block is freely rotatable on said jack screw when disengaged from
said heel cup such that turning said block clockwise or
counterclockwise lengthens or shortens said adjustable length
strut.
6. The highback of claim 1, wherein said channel widens from bottom
to top of said highback, and further wherein a beam extending from
side to side of said highback body member closes said channel at
the top, thereby providing a handle for grasping said highback body
member.
7. The highback of claim 1, further comprising anterioinferior toe
pivot ears configured to engage said heel cup and to pivot
cooperatively thereon.
8. The highback of claim 1, wherein said forward lean adjustor
block and jack screw are configured to enable a forward lean mode
and a recline mode.
9. A highback with body and posterior spine for a boot binding
system, which comprises an adjustable length strut mounted on a
pivot axle hingedly mounted in pivot ears forming a pivot pin
cradle transversely disposed or affixed along the spine of the
highback body, said adjustable length strut having a forward lean
adjustor block, wherein said block is lockably movable on said
strut and seats endwise on a top rim of a heel cup, said block
moveably acting to lockably extend or retract said strut length,
and, further wherein said block is enabled to be pivoted to an
inverted position on said pivot axle so as to be fully
disengaged.
10. A method for improving forward lean angle adjustment, which
comprises (a) providing a splitboard boot binding system with
baseplate, toe and ankle straps, and heel cup; (b) providing a
highback having a body member with backside spine and a strut
extending posteriorly therefrom, said strut comprising a forward
lean adjustor block, wherein said strut is hingedly mounted on a
pivot axle disposed or affixed to said spine, said block has a seat
configured to sit endwise on a top rim of said heel cup; and said
block is configured to be adjustably positioned to adjust the
length of said strut; and, (c) extending or retracting the length
of said strut by adjustably positioning said forward lean adjustor
block on said strut to adjust the forward lean angle.
11. The method of claim 10, wherein the length of said strut is
adjusted by slideably or rotatably positioning said forward lean
adjustor block on said strut.
12. The method of claim 10, wherein said pivot axle is a pivot
cradle having two pivot ears and a pivot pin transversely mounted
between said pivot ears and said pivot cradle is disposed or
affixed to said spine.
13. The method of claim 10, wherein said strut is threaded at least
in part, and said block is threadedly mounted on said strut, said
method comprising rotatably adjusting said strut length.
14. The method of claim 14, wherein said threaded strut is a
captive jack screw, said block is threadably rotatable on said
captive jack screw, and said screw is affixed to said pivot axle,
and further threadably rotating said block on said screw to extend
or retract said strut length and then re-seating said block on said
top rim, whereby said forward lean angle is adjusted in half turn
increments.
15. The method of claim 10, comprising inverting said forward lean
adjustor block on said pivot axle so as to be fully disengaged.
16. The method of claim 15, wherein said spine comprises two walls
contralaterally disposed thereon that define a channel, and further
wherein said walls are configured to receive and secure said block
in said inverted position.
17. The method of claim 16, wherein said two walls define a pivot
cradle, and said pivot pin is mounted transversely between said
walls.
18. The method of claim 10, further comprising a step for selecting
a recline mode defined by a negative forward lean angle.
19. The method of claim 10, wherein said step for extending or
retracting the length of said strut by adjustably positioning said
forward lean adjustor block on said strut to adjust the forward
lean angle is achieved by sliding said forward lean adjustor block
up or down on said strut and locking said block in place.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is related to and claims the benefit of
priority under 35 U.S.C. .sctn.119(e) from U.S. Provisional Patent
No. 62/109,149 filed Jan. 29, 2015 which is herein incorporated in
full by reference for all purposes. Related applications include
U.S. patent application Ser. No. 14/981,777, entitled "PUCK
SYSTEM", filed 28 Dec. 2015; said patent documents being
incorporated herein in entirety for all purposes by reference.
COPYRIGHT NOTICE
[0002] A portion of the disclosure of this patent document contains
material which is subject to copyright protection. The copyright
owner has no objection to the facsimile reproduction by anyone of
the patent document or the patent disclosure, as it appears in the
Patent and Trademark Office patent file or records, but otherwise
reserves all copyright rights whatsoever.
GOVERNMENT SUPPORT
[0003] Not Applicable.
FIELD OF THE INVENTION
[0004] An improved highback for snow sports, the highback having an
adjustable strut for selecting forward lean bias. Combinations with
boot binding interfaces are also disclosed.
BACKGROUND
[0005] Splitboarding is an exciting winter sport and is growing
internationally. Derived from snowboarding, the splitboarder
advantageously can disassemble the splitboard and either can carry
the two ski halves or can ski up a slope to a higher elevation;
then reassemble the board halves and ride downhill in "descent
mode" just as on a one-piece snowboard. Thus the splitboarder is
not dependent on ski lifts and can explore virgin backcountry runs
with no limitations. Splitboards thus have the flexibility of
interconverting between a ski or touring mode and a snowboard
descent mode. To achieve the dual function, two boot binding
interfaces are provided: a "ski tour interface" is used when
skiing, and a "ride mode interface" is used when riding the board
in descent mode. Advantageously, the rider's legs are rigidly
anchored together on the board in ride mode, reducing the risk of
knee injuries common in downhill skiing. Highbacks mounted at the
heel roughly even out how sharply a rider can turn on the toeside
of the board and provide support for making heelside turns. Without
a highback, especially on firm snow, heelside turns are quite
difficult.
[0006] Splitboards were first made by Ueli Bettenman, as described
European Pat. Doc. Nos. CH681509, CH684825, German Gebrauchsmuster
DE9108618, and EP0362782B1, first under the tradename Snowhow, and
later in conjunction with Nitro (Seattle, Wash.). Another early
entrant commercially was Voile (Salt Lake City, Utah). The popular
"Split Decision" introduced a binding system described in U.S. Pat.
No. 5,984,324 to Wariakois. The patent describes a "slider track"
with insertable toe pivot pin for each foot, the slider track
joining pairs of "slider blocks" mounted crosswise on each ski
member; the toe pivot pin also serving as a pivot axle for free
heel ski touring. This innovation resulted in substantial growth of
interest in splitboarding in the United States and has had a
worldwide impact on the sport.
[0007] Ritter, in U.S. Pat. Nos. 7,823,905, 8,226,109 and in U.S.
Pat. No. 9,022,412, discloses a stiffer, lower and lighter binding
for spanning slider blocks mounted crosswise on the splitboard.
These bindings are being commercialized by Spark R&D of Bozeman
Mont. and have developed an international following.
[0008] Splitboard binding systems for soft boots typically include
an upright member, called a "highback", that seats behind the heel
and supports a rider's calf. The highback improves coupling
efficiency, allowing the rider to better control the board through
leg movement. For example, leaning back against the highback places
the board on its heel edge for a heelside turn, while balancing the
rider. Momentum does the rest.
[0009] Conventional highbacks generally include an upright support
member formed with a pair of lateral pivot ears for mounting the
highback to a boot binding apparatus, which includes toe and ankle
straps. A splitboard rider's legs are generally held by the
highback at a forward angle relative to the board. This stance
provides better balance, control and ensures the rider's knees are
slightly bent for better shock absorption, particularly in bumpy or
variable snow conditions. To hold the rider's leg in such a stance,
the highback is typically inclined relative to the board in a
position referred to as "forward lean". A desired amount of forward
lean is set by pivoting the highback in the toe direction about the
mounting axis and locking its position so that it engages a portion
of the boot binding, typically a "heel cup", to provide leverage
against the highback and prevent bending beyond the desired forward
lean angle. Increasing the forward lean increases the response of
the board on a heelside turn, but at the same time constrains the
rider's legs to a degree and can inhibit necessary movements used
to negotiate varying terrain. Thus there is a balance to be struck
between support and mobility. Each rider is different in what they
want, necessitating easy adjustability.
[0010] Patent literature related to adjustable highbacks include
U.S. Pat. No. 5,713,587 to Morrow, U.S. Pat. No. 6,325,405 to
Okajima, U.S. Pat. No. 6,390,492 to Bumgamer, U.S. Pat. No.
7,077,403 to Laughlin and Dodge, and WO 2012/058451 to Morrow. Some
of these systems require special keys to operate, and are ratcheted
so that adjustment is stepwise instead of smooth. Moreover, these
systems are generally specific for snowboards, and lack features as
would find use for uphill skiing, simply because uphill skiing is
not possible with a snowboard. For uphill touring it is desirable
for the highback to recline, allowing the splitboarder maximum
stride for efficient travel. The ability to quickly switch between
a recline mode and a forward leaning mode is also desirable.
[0011] It is an object of the present invention to provide an
improved highback suitable for use with a splitboard binding system
having both a "ski touring" mode (enabled to perform both downhill
and uphill skiing) and a splitboard "ride" mode. There has been a
long-standing need for a highback that is more closely adapted for
use with splitboards.
SUMMARY
[0012] A splitboard boot binding system is provided that comprises
a baseplate constructed and arranged to receive a rider's boot and
is capable of being mounted on a splitboard in either ride mode or
ski tour mode. The baseplate assembly includes a "heel cup" for
receiving a boot heel and toe and ankle straps. The improved
splitboard boot binding further includes an upright support member,
termed a "highback", shaped to contact and support a rider's ankle
and calf at a posterior aspect, and having a means for selecting a
preferred forward lean bias. The highback includes pivot ears and
mounts on the heel cup. Increased forward lean requires the rider
to flex at the knees; reduced forward lean allows the rider to
stand more upright. The rider adjusts the forward lean bias of the
highback according to skiing or riding style and conditions, and
according to personal comfort.
[0013] No tools are required for adjustment of forward lean bias. A
captive screw is mounted from a transverse axle pin inserted into
the spine of the highback, such that rotation of a forward lean
adjustor block threaded onto the distal end of the screw extends or
retracts the strut length (and the highback forward lean angle) in
relation to the heel (and baseplate). The threaded adjustor block
includes a slotted underside that seats on the top back rim of the
heel cup. The block is supported by the heel cup rim, but can be
lifted off the heel cup and inverted so as to quickly disengage the
forward bias. A walled channel in the spine of the highback is
configured to capture the block in its inverted position when not
in use. Reversing this motion allows the block to be re-seated on
the heel cup. A forward lean adjustment can be dialed in by
rotating the adjustor block on the captive jack screw.
[0014] Thus in a first exemplary embodiment, the invention is a
highback for a splitboard boot binding system with heel cup, which
comprises an adjustable length strut mounted at a first end on a
pivot pin in a channel running center-back the length of the spine
of a highback body member (1a, FIG. 8B), the adjustable length
strut having a forward lean adjustor block, wherein the block is
threadably rotatable on a second end of the captive jack screw and
seats endwise on a top rim of the heel cup, the block acting to
extend or retract the strut length and a highback forward lean
angle in half turn increments. When not in use, the forward lean
adjustor block is enabled to be pivoted to an inverted position on
the pivot pin so as to be fully disengaged. Advantageously, the
channel at the spine of the highback body is defined by two walls
contralaterally disposed thereon, the walls serve to receive and
secure the block in the inverted position and also serve as a pivot
cradle for the pivot pin, achieving a synergy of function.
[0015] The elements, features, steps, and advantages of the
invention will be more readily understood upon consideration of the
following detailed description of the invention, taken in
conjunction with the accompanying drawings, in which presently
preferred embodiments of the invention are illustrated by way of
example.
[0016] It is to be expressly understood, however, that the drawings
are for illustration and description only and are not intended as a
definition of the limits of the invention. The various elements,
features, steps, and combinations thereof that characterize aspects
of the invention are pointed out with particularity in the claims
annexed to and forming part of this disclosure. The invention does
not necessarily reside in any one of these aspects taken alone, but
rather in the invention taken as a whole.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The teachings of the present invention are more readily
understood by considering the drawings, in which:
[0018] FIG. 1 is a posterior perspective CAD view of a splitboard
boot binding system with forward lean adjustor mechanism of the
invention.
[0019] FIG. 2 is an exploded view of a highback with forward lean
adjustor as disposed on a boot binding system with heel cup and
baseplate.
[0020] FIG. 3A is a perspective view of a forward lean adjustor
coupled to a highback and seated on a heel cup. Figuratively,
operation of the forward lean adjustor is represented in FIG.
3B.
[0021] FIGS. 4A and 4B are detail views of the assembly of a
forward lean adjustment mechanism.
[0022] FIGS. 5A, 5B and 5C are views of a forward lean adjustment
block resting on the rear lip of the heel cup.
[0023] FIGS. 6A and 6B are action views showing the rotatory action
of the forward lean adjustor block on a captive screw; here driving
the highback into a steep forward lean.
[0024] FIGS. 7A, 7B and 7C are detail views illustrating rotational
extension of the forward lean adjustor axle on the captive
screw.
[0025] FIGS. 8A and 8B compare rear views of the forward lean
adjustor in a fully retracted (FIG. 8A) and a fully extended (FIG.
8B) position.
[0026] FIG. 9 is a detail view of the forward lean adjustor block
in an inverted, disengaged position.
[0027] FIG. 10 demonstrates that the forward lean adjustor can be
rotated 180 degrees on its transverse pivot axle; disengaging the
endwise seating of the adjustor block on the top rim of the heel
cup.
[0028] FIG. 11A illustrates the adjustor mechanism in an inverted,
disengaged position as held in a mating channel in the highback.
FIG. 11B is another view of the mechanism in a disengaged vertical
position.
[0029] FIG. 12A is an action view showing the method by which the
forward lean adjustor block can be rotated manually to extend or
retract the forward bias and to disengage the system.
[0030] FIG. 12B is a field-of-use view of a forward lean
adjustor.
[0031] FIGS. 13A, 13B, 13C, 13D, and 13E show an alternate
construction
[0032] The drawing figures are not necessarily to scale. Certain
features or components herein may be shown in somewhat schematic
form and some details of conventional elements may not be shown in
the interest of clarity, explanation, and conciseness. The drawing
figures are hereby made part of the specification, written
description and teachings disclosed herein.
GLOSSARY
[0033] Certain terms are used throughout the following description
to refer to particular features, steps or components, and are used
as terms of description and not of limitation. As one skilled in
the art will appreciate, different persons may refer to the same
feature, step or component by different names Components, steps or
features that differ in name but not in structure, function or
action are considered equivalent and not distinguishable, and may
be substituted herein without departure from the invention. Certain
meanings are defined here as intended by the inventors, i.e., they
are intrinsic meanings. Other words and phrases used herein take
their meaning as consistent with usage as would be apparent to one
skilled in the relevant arts. The following definitions supplement
those set forth elsewhere in this specification.
[0034] "Splitboard": a combination consisting of two separable ski
members, each generally having one non-linear ski-like longitudinal
edge, that can be conjoined at opposing lateral straight edges
(defining a board "centerline" or "seam") to form a snow gliding
board. The ski members are typically shaped so as to approximate
the right and left halves of a snowboard respectively. The tips of
the ski members are generally secured together in ride mode
configuration by use of hooks, pins, or other conjoining apparatus,
but the relative stiffness of the coupling is largely the result of
the mechanics of the transverse union formed by the puck system and
boot binding hardware straddling the separate ski members.
[0035] "Ski tour" or "touring", when used as a noun, indicates a
trip through areas typically away from ski resorts, often referred
to as "backcountry", which may include traversing flat areas,
ascending inclined slopes, and descending slopes. Touring is done
using one or several of the following pieces of equipment: skis,
poles, snowshoes, snowboards, or splitboards. When used as a verb,
indicates: to enter the backcountry, typically away from a ski
resort, and perform one or more of the following: traverse flat
areas, ascend inclined slopes, and descend slopes using one or more
of the following pieces of equipment: skis, poles, snowshoes,
snowboards, or splitboards. With reference to splitboards, the
terms "board ride mode" and "ski tour mode", have special meaning
because the splitboard is provided with interfaces for
interchangeably performing both.
[0036] A "ski tour mode interface" or "ski binding interface" is a
boot binding interface affixed to splitboard or more specifically
to the ski members of a splitboard, the interface having a toe
pivot bracket or cradle for pivotably mounting a boot binding
thereon. The ski tour interface is used for ski touring and
cross-country skiing, as may be termed here "ski tour mode". With
reference to splitboard, the term "ski tour mode" indicates a
skiing method in which the two ski members of a splitboard are
separated and are attached one to a leg, typically with a free heel
binding, such as is used to ascend slopes and flats where board
ride mode is not possible. More generally, a ski tour interface
refers to hardware, brackets, pins or blocks secured on the surface
of each ski, generally centrally placed, so that boot bindings can
be fastened to them, one boot to a ski. In the most common
conventional device, a ski touring pin cradle and pivot pin is used
with a pivotable boot binding baseplate, the purpose of which is to
provide a hinged coupling between the boot and its counterpart ski
member, as in telemark skiing and "free heel" skiing. Heel locking
devices may also be used, however. A ski mounting block may take
the place of the pin cradle and may be used with boot mounting
tongues, cables, or other pivoting means. Incorporated herein by
reference with respect to pivoting means are U.S. Pat. No.
5,649,722 to Champlin, U.S. Pat. No. 6,685,213 to Hauglin, U.S.
Pat. No. 5,741,023 to Schiele, US Pat. Appl. 2005/0115116 to
Pedersen, and their cited and citing references. "Ride" or
"riding": a noun or verb used by splitboarders and snowboarders to
indicate the distinctive descent on snow experienced by a rider on
a snowboard (or on a splitboard in ride mode). Snowboarders and
splitboarders ride; skiers ski.
[0037] A "ride mode binding interface", also termed a "ride mode
interface" or perhaps more accurately termed "descent mode
interface", is boot binding interface affixed to a board so that a
rider can ride downhill on snow with legs apart, knees flexed, and
body generally in a side stance on the board. The ride mode
interface is used when the board is ridden in the manner of a
snowboard. With reference to splitboards, the ride mode interface
optionally comprises paired puck assemblies, two for each foot,
such that members of each pair are affixed to opposite ski halves
of a splitboard, so that when each of a rider's boot bindings are
engaged on the paired pucks (the underside channel of the
bootbinding engaging mated parallel contralateral superiolateral
flanges (the "slider track") of the sliderblocks), the ski halves
of the splitboard are joined to each other. The "ride mode
interface" is preferred for descending snowy slopes, as may be
termed here "ride mode". Other ride mode interfaces compatible with
the forward lean adjustor system of the invention include bindings
currently made by Voile, Burton, Karakoram, Ranger, Plum, SP and
other binding manufacturers.
[0038] "Forward lean" refers to the flexion of the rider's knees,
and to an adjustable setting on the highback of a boot binding.
Conventionally, the range of adjustment is between zero and about
22 degrees of dorsiflexion, and is typically associated with knee
flexion.
[0039] "Foot roll": is a term used in the art to denote the freedom
of angular leg movement experienced by a board rider. The rider
uses foot roll to shift the pressure on the board toward the nose
or tail on the underlying snow and to control the ride. Foot roll
is essentially the ".DELTA..theta." in the equation for torsional
stiffness. Optimizing the stiffness factor K, optimizes the control
of the ride achieved with foot roll.
[0040] "In alternation" or "in turn" refers to the
interchangeability of the boot binding system between a ride mode
interface and a ski touring mode interface, but may also include
switching the system from one gliding board to another board having
a compatible interface. Thus any combination of interfaces may be
selected in turn because the engagement interfaces enable
attachment to any of them.
[0041] General connection terms including, but not limited to
"connected", "attached", "conjoined", "secured", and "affixed", are
not meant to be limiting, such that structures so "associated" may
have more than one way of being associated.
[0042] Relative terms should be construed as such. For example, the
term "front" is meant to be relative to the term "back," the term
"upper" is meant to be relative to the term "lower," the term
"vertical" is meant to be relative to the term "horizontal," the
term "top" is meant to be relative to the term "bottom", "inside"
is relative to the term "outside", "toeward" is relative to the
term "heelward", "toeside" is relative to the term "heelside", and
so forth. Unless specifically stated otherwise, the terms "first,"
"second," "third," and "fourth" are meant solely for purposes of
designation and not for order or for limitation. Reference to "one
embodiment," "an embodiment," or an "aspect," means that a
particular feature, structure, step, combination or characteristic
described in connection with the embodiment or aspect is
anticipated to be included in at least one realization of the
present invention. Thus, the appearances of the phrases "in one
embodiment" or "in an embodiment" in various places throughout this
specification are not necessarily all referring to the same
embodiment and may apply to multiple embodiments. Furthermore,
particular features, structures, or characteristics of the
invention may be combined in any suitable manner in one or more
embodiments.
[0043] It should be noted that the terms "may", "can", and "might"
are used to indicate alternatives and optional features and only
should be construed as a limitation if specifically included in the
claims. The various components, features, steps, or embodiments
thereof are all "preferred" whether or not it is specifically
indicated. Claims not including a specific limitation should not be
construed to include that limitation. The term "a" or "an" as used
in the claims does not exclude a plurality. "Conventional" refers
to a term or method designating that which is believed known and
commonly understood in the technology to which this invention
relates.
[0044] A "method" as disclosed herein refers to one or more steps
or actions for achieving the described end. Unless a specific order
of steps or actions is required for proper operation of the
embodiment, the order and/or use of specific steps and/or actions
may be modified without departing from the scope of the present
invention.
[0045] Unless the context requires otherwise, throughout the
specification and claims that follow, the term "comprise" and
variations thereof; such as, "comprises" and "comprising" are to be
construed in an open, inclusive sense--that is as "including, but
not limited to."
[0046] "Adapted to" includes and encompasses the meanings of
"capable of" and additionally, "designed to", as applies to those
uses intended by the patent. In contrast, a claim drafted with the
limitation "capable of" also encompasses unintended uses and
misuses of a functional element beyond those uses indicated in the
disclosure. Aspex Eyewear v Marchon Eyewear 672 F3d 1335, 1349 (Fed
Circ 2012). "Configured to", as used here, is taken to indicate is
able to, is designed to, and is intended to function in support of
the inventive structures, and is thus more stringent than "enabled
to".
[0047] The appended claims are not to be interpreted as including
means-plus-function limitations, unless a given claim explicitly
evokes the means-plus-function clause of 35 USC .sctn.112 para (f)
by using the phrase "means for" followed by a verb in gerund
form.
[0048] Unless otherwise defined, all technical and scientific terms
used herein have the same meaning as commonly understood by one of
ordinary skill in the art to which this invention belongs. In case
of conflict, the present specification, including definitions, will
control.
DETAILED DESCRIPTION
[0049] Improvements in highback forward lean adjustment are needed
to aid a rider in selecting and optimizing a preferred style of
riding. For example, responsiveness for heelside carving is aided
by a forward lean bias, allowing more turning power and tighter
turns, but less forward lean allows a more relaxed and loose
posture--because the highback is not forcing the rider maintain
knee flexion. Less forward lean may also feel more comfortable,
providing freestyle riders with more movement to adjust their
posture on the fly. Riders may define a comfort zone for their
style of boarding and adjust the highback accordingly. The forward
lean adjustor system of the invention can be used with any
splitboard or snowboard binding utilizing a pivoting highback and
heel cup. Readily adjusted highback forward lean can also improve
performance in uphill skiing (also termed "skinning"), where the
rider hikes up a slope by alternately pushing each ski ahead. A
forward lean adjustor that enables the highback to recline may
allow the rider a longer stride when skinning Thus a rider may wish
to adjust the lean angle periodically, and the ability to do this
quickly without tools is an advantage. For some splitboard binding
adjustments, a Phillips head screw driver or an Allen wrench are
needed, but these are difficult to manipulate in cold weather,
particularly while wearing insulated gloves. Advantageously, the
inventive mechanism eliminates the need for tools in making
adjustments or for disengaging the forward lean bias, and enables
the rider to make adjustment even when wearing gloves. Highbacks
are used in conjunction with climbing bars to adjust the rider's
leg angle when climbing. These and other features are described
with reference to the figures and accompanying description and
claims.
[0050] Referring to FIG. 1, a posterior perspective CAD view of a
splitboard boot binding 100 is illustrated, with forward lean
adjustor 10 of the invention. A pivotable highback 1 and heel cup 2
support the system. The heel cup is mounted on a boot binding
baseplate 3 on which the rider's foot rests and the highback body
is attached to the heel cup at forward pivot ears. Angulation of
the highback is achieved with the forward lean adjustor, which
serves as a variable length strut.
[0051] FIG. 2 is an exploded view of a highback body 1 with forward
lean adjustor 10 as disposed on a boot binding with heel cup 2 and
baseplate 3. The forward lean adjustor assembly is drawn in
isolation, and includes a transverse pivot pin 11, jack screw 12
(with buttonhead cap), and a captive nut 13 that engages a forward
lean adjustment block 14. Collectively the forward lean adjustor
sub-assembly 10 defines an adjustable length strut between the
highback body and the top rim of the heel cup (when engaged). The
pivot pin is threadedly mounted on a first end of the jack screw;
the adjustor block on a second end, and generally only the adjustor
block is rotated to adjust the strut length.
[0052] Center channel 15 is defined by raised walls that function
as a pivot cradle, indicated here by pivot holes 16. The raised
walls strengthen the spine of the highback body, support the pivot
pin, and provide a means for securing the adjustor block when not
in use. Also visible in the center channel 15 is a ruled section
with indicia used for reference in making adjustments, such as for
dialing in a preferred setting for certain riding conditions.
Dashed lines indicate assembly (some fasteners are not shown for
clarity).
[0053] The highback is provided with two pivot ears 17 (shown here
with multiple selectable positions) on which it rotates when
extended by the action of the adjustable length strut. The heel cup
includes mating pivot members for engaging the highback pivot ears,
as known in the art. Fasteners for securing the heel cup to the
baseplate 3 are not drawn for clarity.
[0054] FIG. 3A is another rendering demonstrating the workings of a
forward lean adjustor 10 coupled to a highback. The rider may
reduce or increase the forward bias by rotating the adjustor block
14 on the captive jack screw 12.
[0055] The highback body includes two walls 18 on either side of
channel 15 that run up the spine (la, dashed line, FIG. 8B) of the
backside of the highback body. The two reinforcements or ribs form
a pivot cradle (holes, 16) for receiving the transverse pivot pin
11 at the top head of the jack screw 12. This axle couples the
rotatory extension and retraction of the jack screw 12 to a forward
lean (bold arrow) of the highback on its pivot ears. Channel 15 is
closed at the top of the highback body, forming a convenient handle
19. Thus the structure provides a synergy of functions in a compact
and rugged assembly.
[0056] Figuratively, operation of the forward lean adjustor is
represented in FIG. 3B. Point A represents the pivot pin cradle 16,
point B represents the endwise seat of the adjustor block 14 on the
top rim of the heel cup, and point C represents the pivot ear
angulation axis 17 of the highback body 1. Triangle segment A-B may
be varied in length; thus the angulation at C is selectable over a
range corresponding to the length of the jack screw and adjustment
block combination as indicated by the bold arrows. Using a threaded
adjustment block on the jack screw provides a compactness of
construction and reduces snow impaction of the mechanism. Using a
threaded pivot pin allows for added function to stow the adjustor
block, it simply is rotated to an inverted position and secured in
channel 15. No tools are needed, when strapped in, the rider can
reach back and squat down to adjust the forward lean bias by
rotating the threaded adjustor block clockwise or counterclockwise
on the jack screw as shown in FIG. 12A.
[0057] FIG. 3B figuratively also represents the angulation of the
highback relative to the heel cup. Angle theta (.theta.) can range
from a positive angle as for forward lean to a negative angle, as
for negative lean, as needed. The negative lean, also termed
"recline mode" is achieved by winding the adjustor block 14 further
onto the jack screw 12 and then seating the block on the heel cup 2
so that the angulation is positive or negative.
[0058] FIGS. 4A and 4B are detail views of the assembly of a
forward lean adjustor. FIG. 4A shows the completed assembly 10.
Jack screw 12 is threaded through a threaded sleeve in pivot pin
11; forward lean adjustor block 14 is threaded onto the other end
of the screw. A captive nut 13 couples the threads on the screw to
the block. The forward lean adjustor sub-assembly acts essentially
as an adjustable strut that is extensible and retractable by
winding the forward lean adjustor block in or out on the screw.
Lengthening the strut results in increased forward lean, shortening
the strut reduces the forward lean. At the base of the block is a
slot 14a that rests on the top rear edge of the heel cup 2 as shown
in FIGS. 5A, 5B and 5C when engaged, preventing unwanted rotation
or slippage. In this way, any force exerted on the highback is
coupled through the heel cup 2 to the baseplate 3 and the
board.
[0059] FIG. 4B is an exploded view showing the captive jack screw
12 and captive nut 13, the transverse pivot axle 11, and the
forward lean adjustor block 14 making up the forward lean adjustor
sub-assembly 10. As will be described below, block 14 is rotated on
the screw (bold arrow) to adjust the forward lean bias. Nut 13 is
locked in the block 14 and threads up and down jack screw 12 to
lengthen or shorten the strut. Other means for adjusting strut
length without tools are contemplated, but the jack screw provides
a fine level of adjustment dependent on the thread pitch.
[0060] FIGS. 5A, 5B and 5C are views of a forward lean adjustment
block 14 resting on the rear top rim of the heel cup 2. The
underside slot 14a on the adjustor block is again illustrated
engaging the rim of heel cup. At the top of screw 12 is a
buttonhead 12a with provision for using an Allen wrench to lock the
screw and pivot pin together during setup. In the field, adjustment
may be made manually by turning the adjustor block 14 at the bottom
so that the nut threads up and down the screw to change the length.
The combination of pivot axle 11, forward lean adjustor block 14,
screw 12 and captive nut 13 is termed the "forward lean adjustor
sub-assembly" 10 as shown in FIG. 4B.
[0061] FIGS. 6A and 6B are action views showing the rotary pivot
action of the forward lean adjustor block on a captive screw, here
driving the highback into a steep forward lean angle. Adjustment of
the highback over about thirty degrees of positive forward lean
angle may be achieved. By configuring the jack screw and block, a
slight negative lean may also be achieved if desired for powder
riding with full leg extension.
[0062] This view also shows the underside slot 14a in the adjustor
block as engaged on the heel cup rim and as seen in profile in FIG.
6B. As currently practiced, Jack screw 12 is an M6.times.1 mm pitch
screw or 25.4 threads per inch in Imperial units, and is threaded
into pivot pin 11. The thread pitch determines the fineness of
adjustment, each half turn of adjustor block 14 is an increment
decreasing or increasing the length of the forward lean adjustor
strut 10. The total length of the jack screw need not be long,
sufficient adjustment is achieved with a 40 mm buttonhead cap
screw. By selecting the bolt length, angulation is limited to about
22 degrees from upright, as is sufficient for the vast majority of
riders.
[0063] Also a feature of the inventive forward lean adjustor and
highback combination is the capacity to reverse the lean so that a
negative forward lean angle is achieved. The ability to quickly
switch between a positive forward lean angle or "mode" and a
negative forward lean angle or "recline mode" is also desirable.
The recline mode for example can be used by riders in making "surf
style" turns in deep snow, such as with a swallowtail board in
powder or to enable a long stride while skinning By selecting the
range of motion of the adjustor block on the jack screw or by
moving the pivot axle up on the spine of the highback, negative
lean angles are obtained. As currently practiced, fully disengaged,
only the boot limits plantar flexion and dorsiflexion during riding
or touring.
[0064] Highbacks of the invention are shown here with channel 15
and pivot axle integrated into the construction. The highback is
defined by a body member with spine extending at the posterior of
the body from top to bottom. However, the concept extends also to
constructions made of two or more segments that operate to form an
extensible truss for enabling forward lean adjustment and to
constructions made with alternatives to a jackscrew, such as a
piston with locking ring and optional spring or dampener, an
extensible rod with spaced detents, and so forth. Alternatively,
the highback comprises an adjustable length strut mounted on a
pivot pin rotatably mounted in pivot ears forming a pivot pin
cradle transversely disposed or affixed along the spine of the
highback body, said adjustable length strut having a forward lean
adjustor block, wherein said block is lockably slideable or
moveable on said strut and seats endwise on a top rim of said heel
cup, said block slideably or moveably acting to lockably extend or
retract said strut length, and further wherein said block is
enabled to be pivoted to an inverted position on said pivot pin so
as to be fully disengaged.
[0065] FIGS. 7A, 7B and 7C are detail views illustrating the
reversibly extensible screw mechanism for adjusting the forward
lean. Extension and retraction are completely reversible and are
readily achieved by winding or unwinding the adjustor block 14 on
jack screw 12. Bold arrows indicate the winding motion. In this
instance turning the adjustor block clockwise threads the captive
nut 13 closer to the buttonhead 12a; turning the block
counterclockwise retracts the captive nut 13 from the button
head.
[0066] FIGS. 8A and 8B compare rear views of the highback with
forward lean adjustor in a fully retracted (FIG. 8A) and a fully
extended (FIG. 8B) position. Channel 15 in the highback 1 is
provided to receive the adjustor block when flipped up and inverted
on its pivot axle. Two walls (18a,18b) bordering channel 15 aid in
securing the adjustor block when stowed as shown in FIG. 10, where
the spine 1a of the heelback is indicated for reference. When
secured in the channel, any forward bias is fully disengaged and
the block is secured out of use. Comparing FIGS. 8A and 8B, the
baseplate 3 is completely flat relative to the heel cup, but the
highback is forced into a forward angulation by extending the strut
(as shown on the right).
[0067] FIG. 9 is a detail view of the forward lean adjustor block
in an inverted, disengaged position. In this view, the block, which
otherwise is typically pendant from pivot axle 11, is now standing
on its head, and slot 14a is visible on top. Bold arrows indicate
the rotary motion on the pivot axle. In an inverted position as
shown, the mechanism no longer serves as a strut with endwise
detent to bias the rider's leg into a flexed position.
[0068] FIG. 10 shows again that the forward lean adjustor can be
rotated about 180 degrees on its transverse pivot axle. Block 10 is
drawn in a first downward position (solid lines) and in a second
inverted position (dashed lines) and the rotational freedom is
indicated by a bold arrow. The axis of rotation is formed by pivot
axle 11, that is pivotably mounted in the walls of channel 15 in
the highback as described earlier. Heel cup 2 is shown for
reference. Thus surprisingly, the pivot axle 11 serves both for
adjustment of the strut length and as a convenient pivot for
entirely disengaging the strut from the heel cup and conveniently
stowing the adjustor block in channel 15, which is formed in the
highback for that purpose (FIGS. 8A and 8B).
[0069] FIG. 11A illustrates the adjustor block 14 in an inverted,
disengaged position as held in channel 15 (where walls 18 of the
channel are indicated by branched arrows) in the highback. The axis
of rotation for inversion is at 11, the center of the pivot cradle.
FIG. 11B is another view of the adjustor block 14 in a disengaged
inverted position. In this configuration, the highback is passively
coupled to the rider's leg and provides no forward bias. The lower
edge of the highback will engage the heel of the boot, providing a
maximum level of mobility for the rider's ankles and thus an
optimal stride when the rider's boot is strapped on the binding
baseplate. Not shown are ankle straps that secure the rider's boots
in the heel cup. Identified here is baseplate underside channel 101
with internal lateral flanges 102 as are compatible with "puck
systems" used as "ride mode interfaces" and are described in U.S.
Pat. Nos. 7,823,905, 8,226,109 and in U.S. Pat. No. 9,022,412 to
Ritter, and U.S. Pat. No. 5,984,324 to Wariakois, all said patent
documents being incorporated in full by reference, but the
invention is not to be construed to be limited to this style of
boot binding baseplates.
[0070] FIG. 12A is an action view showing a method by which the
forward lean adjustor block can be rotated manually to extend or
retract the forward bias. The operation may be achieved with a
gloved hand, for example and requires no tools. Manual adjustment
allows the adjustor block for example to be spun rapidly to
lengthen up the strut, as when firm snow conditions are encountered
on a descent and the rider is in need of quickly increasing the
forward lean bias.
[0071] In this method the adjustor block 14 is extended out from
the highback. Winding the block clockwise or counterclockwise
shortens or lengthens the assembly. The block with underside slot
14a is then re-engaged on the top rim of the heel cup 2. Two walls
(18a,18b) bordering channel 15 aid in securing the adjustor block
when stowed. Essentially, the adjustor mechanism functions as a
variable length strut in biasing forward lean. Depth markings allow
the rider to quickly make changes based on past experience, but the
adjustment also can be made by feel; adjustment takes only a few
seconds and can be repeated to get comfortable before continuing
on.
[0072] Thus the invention is also a method, which comprises (a)
providing a splitboard boot binding system with baseplate, toe and
ankle straps, and heel cup; (b) providing a highback having an
adjustable length strut mounted on a pivot pin in a channel in back
of a highback body member, said adjustable length strut having a
forward lean adjustor block, wherein said block is threadably
rotatable on a captive jack screw affixed to said pivot pin and
seats endwise on a top rim of said heel cup; and (c) extending or
retracting said strut length and a highback forward lean angle in
half turn increments by rotating said forward lean adjustor block
clockwise or counterclockwise on said jack screw.
[0073] More generally, the method for adjusting forward lean angle
comprises (a) providing a splitboard boot binding system with
baseplate, toe and ankle straps, and heel cup; (b) providing a
highback having a body member with backside spine and a strut
extending posteriorly therefrom, the strut comprising a forward
lean adjustor block, wherein the strut is hingedly mounted on a
pivot axle disposed or affixed to the spine, the block has a seat
configured to sit endwise on a top rim of the heel cup; and the
block is configured to be adjustably positioned to adjust the
length of the strut; and, (c) extending or retracting the length of
the strut by adjustably positioning the forward lean adjustor block
on the strut to adjust the forward lean angle. The length of the
strut may be adjusted by slideably or rotatably positioning the
forward lean adjustor block on the strut. The pivot axle may be a
pivot cradle having two pivot ears and a pivot pin transversely
mounted between the pivot ears in which the pivot cradle is
disposed or affixed to the spine. In some embodiments, the strut is
threaded at least in part, and the block is threadedly mounted on
the strut and method comprises rotatably adjusting the strut
length. In other exemplary methods, the threaded strut is a captive
jack screw, the block is threadably rotatable on the captive jack
screw, and the screw is affixed to the pivot axle, and includes a
step for threadably rotating the block on the screw to extend or
retract the strut length and then re-seating the block on the top
rim, whereby the forward lean angle is adjusted in half turn
increments. The method may also involve inverting the forward lean
adjustor block on the pivot axle so as to be fully disengaged,
whereby the highback is free to angulate on its pivot axis. In
other embodiments, the spine comprises two contralaterally disposed
walls that define a channel therebetween, and further wherein the
walls are configured to receive and secure the block in an inverted
position. Essentially, the two walls define a pivot cradle, the
pivot pin is mounted transversely between the walls, and the walls
serve to retain the adjustor block when disengaged. There may also
be as step for selecting a "recline mode" defined by a negative
forward lean angle. And in an alternate method, the step for
extending or retracting the length of the strut is achieved by by
sliding the forward lean adjustor block up or down on the strut and
locking the block in place. The full assembly 100 (including all
elements of splitboard boot binding) may be sold with a variety of
heel cups 2 and baseplates 3. In this view, baseplate 3 is provided
with an underside flanged channel 101, as is currently preferred
for practice of the invention, but is not limited thereto. Ankle
and toe straps are used to secure the boot to the baseplate 3,
which is shown here with a pair of toe pivot holes 103 for free
heel skiing. Also shown in this view is a volume 104 surrounded by
the heel cup for receiving the heel of a rider's boot. Thus the
invention is realized not only in modified and improved highbacks
in combination with the forward lean adjustor sub-assembly 10, but
also as combinations with highbacks, boot bindings, heel cups and
baseplates intended for use with any of the various ride mode
interfaces and ski tour interfaces as known in the art.
[0074] Alternatively, the improved highback with forward lean
adjustor sub-assembly 10 may be sold separately as a kit for
retrofit to boot bindings already in service. The highback toe
pivot ears need only be compatible with a mating highback
angulation (pivot) feature of the heel cup 2. A highback pivot
feature 2a is shown figuratively here but various such features are
known in the art.
[0075] FIG. 12B shows the forward lean adjustor with extensible
strut in its "field of use", mounted on a splitboard boot binding
as a combination 120 with toe pivot and board member. While details
of the splitboard boot binding are shown, the method of operation
of the extensible strut may be generalized to other boot bindings
having a heel cup and a highback, so that the principle of the
concept is not limited to the structural particulars shown
here.
[0076] FIGS. 13A, 13B, 13C, 13D, and 13E show an alternate
construction. In FIG. 13A, the components of a forward lean
adjustor subassembly 110 are labeled. At the top, a pivot mechanism
130 consisting of pivot ears 131a and 131b supports a transverse
pivot pin 111, jack screw 112 (with buttonhead cap), and forward
lean adjustor block 114 with integral captive nut. The pivot
mechanism is configured to allow block 114 to rotate from a down
position (arrow) as in FIG. 13C to an "up" position (arrow) as in
FIG. 13D, i.e., from an engaged position to a disengaged position.
Collectively the forward lean adjustor sub-assembly 110 defines an
adjustable length strut between the highback body and the top rim
of the heel cup (when engaged) and can be varied in length as
demonstrated by comparing FIG. 13A with FIGS. 13B and 13C, in which
the strut length is taken up by threading the adjustor block onto
the bolt. In FIG. 13C, the adjustment mechanism actually achieves a
negative angle that defines a "recline mode" as described earlier.
The pivot pin is threadedly mounted on a first end of the jack
screw; the adjustor block on a second end, and the adjustor block
(with captive nut) is rotated to adjust the strut length. A
pivotable highback 1 and heel cup support the system. The heel cup
is mounted on a boot binding baseplate on which the rider's foot
rests and the highback body is mounted on the heel cup at a forward
pivot axle, shown here figuratively by forward pivot ears 133 that
engage the heel cup. Angulation of the highback is achieved with
the forward lean adjustor, which serves as a variable length strut,
as described earlier. Flipping the adjustor block 114 into the up
position as shown in FIG. 13D allows for more negative lean with a
greater reclining angle.
[0077] FIG. 13E figuratively illustrates a generalized method of
construction of a variable length forward lean adjustor. The pivot
assembly 130 is affixed to highback 1 using fasteners, adhesive, or
by a fusion, molding or shaping process and is aligned so that the
slot 114a of the forward lean adjustor block is disengaged in the
up position as shown, but when rotated downward (double headed
arrow) reversibly engages the upper lip of the heel cup, which
provides a rigid support and enables the rider to adjust the
forward lean in a range of angles from positive to negative
according to personal preference and trail conditions. The
mechanism is not inherently limited to a channel with walls
supporting the pivot axle as shown earlier, but may be applied more
generally to highbacks in need of variable forward lean adjustment.
While a jackscrew 112 is a simple and elegant means to achieve
variable strut length, a piston with lock ring is another option,
and the practice of the invention is not limited thereto.
INCORPORATION BY REFERENCE
[0078] All of the U.S. patents, U.S. patent application
publications, U.S. patent applications, foreign patents, foreign
patent applications and non-patent publications referred to in this
specification and related filings are incorporated herein by
reference in their entirety for all purposes.
SCOPE OF THE CLAIMS
[0079] The disclosure set forth herein of certain exemplary
embodiments, including all text, drawings, annotations, and graphs,
is sufficient to enable one of ordinary skill in the art to
practice the invention. Various alternatives, modifications and
equivalents are possible, as will readily occur to those skilled in
the art in practice of the invention. The inventions, examples, and
embodiments described herein are not limited to particularly
exemplified materials, methods, and/or structures and various
changes may be made in the size, shape, type, number and
arrangement of parts described herein. All embodiments,
alternatives, modifications and equivalents may be combined to
provide further embodiments of the present invention without
departing from the true spirit and scope of the invention.
[0080] In general, in the following claims, the terms used in the
written description should not be construed to limit the claims to
specific embodiments described herein for illustration, but should
be construed to include all possible embodiments, both specific and
generic, along with the full scope of equivalents to which such
claims are entitled. Accordingly, the claims are not limited in
haec verba by the disclosure.
* * * * *