BACKGROUND
The present disclosure relates to splitboards. A splitboard is a snow gliding board separable into re-joinable splitboard skis. The disclosure particularly relates to devices for latching the splitboard skis together.
Snowboarding is a recreational activity where a rider glides down a snow-covered mountain, hill, or slope while standing with their feet attached to a single snow glide board known as a snowboard. The concept is like snow skiing except when gliding downhill, both feet are attached to a single snow glide board instead of each foot attached to its own separate ski.
Snowboard riders or “snowboarders” often share downhill snow-covered slopes with skiers. Popular downhill slopes are often accessed by ski lifts to take the skier or snowboarder up to the top of the slope. Some snowboarders are interested in accessing downhill slopes in the backcountry away from crowded ski slopes and where the snow is fresh. However, climbing up mountains and slopes with thick fresh soft snow can be challenging.
Splitboards were developed to allow snowboarders access to the backcountry and areas not normally accessible to snowboarders. A splitboard is a snowboard separable into two separate splitboard skis. To climb uphill, or “tour,” the backcountry, the splitboard rider separates the splitboard and uses it like cross-country skis. This is “touring mode.” To ride downhill, the splitboard rider rejoins the splitboard skis and rides the splitboard as they would an ordinary snowboard. This is “riding mode.”
Boot bindings hold the splitboard rider's boots to the splitboard. In touring mode, one boot binding is attached to each splitboard ski like cross-country skis. In riding mode, the boot bindings are fastened across the splitboard skis and hold the splitboard skis together. Nose and tail clips help keep the forward tip and rearward tip of the splitboard skis from separating.
Riding mode requires a sturdy union at the seam between the two splitboard ski halves. Even with boot binding and nose and tail clips holding the board together, there may still be looseness or play between the two splitboard ski halves. If there is play or looseness along the seam in a splitboard, torsional stiffness will not be not optimal and the splitboard skis may flex relative to each other causing the board to behave unpredictably. This can cause the splitboard rider to lose control of the splitboard. Shear forces between the seam and the board face can cause up and down motion of one splitboard ski relative to the other. This can cause one of the splitboard skis to snag in the snow leading to the rider falling.
Latching devices can be placed along intermediate points along the length of the seam between the two splitboard skis to help increase torsional stiffness and reduce flexing of the splitboard skis relative to each other. These latching devices have taken various forms such as buckles or hook clips. These latching devices go by various names in the splitboard trade, depending on their structure; for example, splitboard clips, splitboard hooks, or split hooks.
SUMMARY
The inventor observed there could be advantages to a latching device with a simpler design and one that better resisted the shear forces that cause up and down motion of one ski relative to the other. The inventor developed a latching device he calls a crossbar clip. The latching device can include a bracket assembly secured to a first splitboard ski and a crossbar assembly secured to a second splitboard ski. The bracket assembly can include a bracket. The crossbar assembly can include a crossbar and a lever rotationally coupled to the crossbar. The bracket assembly and crossbar assembly can be aligned so rotation of the lever applies a force between the lever and the inside edge of the bracket. This compressive force creates a holding force between the first splitboard ski to the second splitboard ski. In addition, the compressive force between the bracket assembly and the crossbar assembly can optionally be adjusted by changing the distance between the inside edge of the bracket and the lengthwise edge of the first splitboard ski.
The lever can include a lever edge that can directly engage the inside edge of the bracket. The lever can include a projected portion or an eccentric portion that engages either directly or indirectly the inside edge of the bracket. The projected portion can project downward from the lever toward the first splitboard ski and can project about an axis of rotation of the lever. Rotation of the lever can apply a compressive force between the projected portion and the inside edge of the bracket which applies a holding force between the first splitboard ski and the second splitboard ski. The eccentric portion is offset (i.e. eccentric or not centered) to the rotational axis of the lever. The bracket assembly and crossbar assembly can be aligned so rotation of the lever applies a force between the eccentric portion and the inside edge of the bracket. The inventor envisions that the lever edge, the projected portion, or the eccentric portion can take on many shapes that create a compressive force with bracket as the lever is rotated. For example, the projected portion, eccentric portion, or lever edge can be a logarithmic spiral or a non-uniform rational basis spline (NURBS).
The bracket assembly can be constrained to within the inside lengthwise edge of the first splitboard ski and generally confined within perimeter boundary of the first splitboard ski. A portion of the crossbar can be positioned between the bracket and first splitboard ski. This creates a wedging effect that prevents up and down movement between the first splitboard ski and the second splitboard ski.
The latching device has advantages and unexpected results. First, the latching device can have holding strength greater than many other latching devices. This can increase ride performance and improve safety. Second, the latching device can have superior holding power with fewer parts. This can make the latching device more reliable with fewer parts to fail improving field serviceability. Third, the latching device can include a threaded fastener that allows for fine adjustment and is independent of the fasteners that retain the bracket assembly to the first splitboard ski. Once fine adjustment is made, the fasteners retaining the bracket assembly can be further tightened while the bracket is in the latched position to prevent movement of the bracket when it is in the unlatched position. Fourth, the latching device assembly can assume a touring mode position where both the crossbar assembly and the bracket assembly can be fully within the perimeter of their respective splitboard skis. No portion of either assembly projects from the edges of the splitboard skis to catch on rocks, branches, and other obstacles. This improves safety and allows for less interruptions when touring. Fifth, the latching device can prevent up and down motion between the first splitboard ski relative to the second splitboard ski. This can increase the safety and performance.
The inventor envisions that the latching device can be implemented with variations and improvements that all fall within the scope of his latching device. For example, the bracket assembly could include a bracket with a first bracket portion slidable within a base laterally regarding the inside lengthwise edge of the first splitboard. A threaded fastener can set the limit of the range of motion of the bracket toward the lengthwise edge of the first splitboard ski. When a force is applied to the inside edge of the bracket toward the second splitboard ski, the bracket will move against the threaded fastener. For example, when the eccentric portion engages the inside edge of the bracket, it will apply a force to the bracket toward the second splitboard ski. This bracket assembly is not limited to the latching device with a crossbar and lever but can be used with any splitboard latching device that applies pressure toward the second splitboard member on a bracket assembly secured to the first splitboard member.
This Summary introduced a selection of concepts in simplified form described the Description. The Summary is not intended to identify essential features or limit the claimed subject matter.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 illustrates, in top perspective view, a splitboard in riding mode with a pair of latching devices in the locked position securing a first splitboard ski and a second splitboard ski together.
FIG. 2 illustrates an enlarged partial view of FIG. 1 showing one of the latching devices.
FIG. 3 illustrates a top view of the splitboard and latching devices of FIG. 1.
FIG. 4 illustrates a bottom view of the splitboard and latching devices of FIG. 1.
FIG. 5 illustrates an enlarged partial view of FIG. 3 showing one of the latching devices.
FIG. 6 illustrates an enlarged partial view of FIG. 4 showing threaded fasteners that secure the latching device of FIG. 5 to the splitboard.
FIG. 7 illustrates in top perspective view, the splitboard and the pair of latching devices of FIG. 1 with the latching devices in an unlocked position.
FIG. 8 illustrates an enlarged partial view of FIG. 7 showing one of the latching devices.
FIG. 9 illustrates a top view of the splitboard and latching devices of FIG. 7.
FIG. 10 illustrates an enlarged partial view of FIG. 9 showing one of the latching devices.
FIG. 11 illustrates an enlarged partial view of FIG. 1 taken from an alternative perspective to better illustrate aspects of the latching device.
FIG. 12 illustrates an enlarge partial view of FIG. 7 taken from the same alternative perspective as FIG. 11.
FIG. 13 illustrates in top perspective view, the splitboard and the pair of latching devices of FIG. 1 with the latching devices in the unlocked position of FIG. 7 and with the first splitboard ski slid free of the second splitboard ski.
FIG. 14 illustrates an enlarged partial view of FIG. 13 showing one of the latching devices.
FIG. 15 illustrates a top view of the splitboard and latching devices of FIG. 13.
FIG. 16 illustrates an enlarged partial view of FIG. 15 showing one of the latching devices.
FIG. 17 illustrates in top perspective view, the splitboard and the pair of latching devices of FIG. 1 with the first splitboard ski slid free of the second splitboard ski and separated apart and with the levers of the latching devices rotated back to their position in FIG. 1.
FIG. 18 illustrates an enlarged partial view of FIG. 17 showing one of the latching devices.
FIG. 19 illustrates a top view of the splitboard and latching devices of FIG. 17.
FIG. 20 illustrates an enlarged partial view of FIG. 19 showing one of the latching devices.
FIG. 21 illustrates in top perspective view, the splitboard and the pair of latching devices of FIG. 1 with the first splitboard ski and the second splitboard ski separated as in FIG. 17 where the lever and the crossbar are being rotated toward the second splitboard ski into a touring mode position.
FIG. 22 illustrates an enlarged partial view of FIG. 21 showing one of the latching devices.
FIG. 23 illustrates a top view of the splitboard and latching devices of FIG. 21.
FIG. 24 illustrates an enlarged partial view of FIG. 23 showing one of the latching devices.
FIG. 25 illustrates in top perspective view, the splitboard and the pair of latching devices of FIG. 1 in touring mode.
FIG. 26 illustrates an enlarged partial view of FIG. 25 showing one of the latching devices.
FIG. 27 illustrates a top view of the splitboard and latching devices of FIG. 25.
FIG. 28 illustrates an enlarged partial view of FIG. 27 showing one of the latching devices.
FIG. 29 illustrates a flow diagram showing the sequence of going from riding mode to touring mode illustrated in FIGS. 1-28.
FIG. 30 illustrates an exploded top perspective view of the latching device and a portion of the splitboard of FIG. 1.
FIG. 31 illustrates an exploded bottom perspective view of a lever assembly and the crossbar of the latching device of FIG. 1.
FIG. 32 illustrates a top view of the lever.
FIG. 33 illustrates a bottom view of the lever.
FIG. 34 illustrates a top, partial, and enlarged view of the bracket assembly and the first splitboard ski of FIG. 1 where the L-bracket is adjusted away from the lengthwise inside edge of the first splitboard ski and where dashed lines representing portions of the structure hidden from view.
FIG. 35 illustrates the view of FIG. 34 where the L-bracket is adjusted toward the lengthwise inside edge of the first splitboard ski and where dashed lines representing portions of the structure hidden from view.
FIG. 36 illustrates a front perspective view of the bracket assembly adjusted as in FIG. 34 and where dashed lines representing portions of the structure hidden from view.
FIG. 37 illustrates a front perspective view of the bracket assembly adjusted as in FIG. 35 and where dashed lines representing portions of the structure hidden from view.
FIG. 38 illustrates in top perspective view, an upper portion of a splitboard with an alternative version of a latching device of the present disclosure.
FIG. 39 illustrates, in top view, the latching device of FIG. 38 and a portion of the splitboard where the latching device is in a locked position for riding mode.
FIG. 40 illustrates, in top view, the latching device and the portion of the splitboard illustrated in FIG. 39, where the lever is rotated to unlock the bracket assembly from the crossbar assembly.
FIG. 41 illustrates, in top view, the latching device and the portion of the splitboard illustrated in FIG. 39, with the latching devices in the unlocked position of FIG. 37 and with the first splitboard ski slid free of the second splitboard ski.
FIG. 42 illustrates, in top view, the latching device and portion of the splitboard illustrated in FIG. 39, where the crossbar and lever are rotated toward the second splitboard ski into touring mode with the entire latching device assembly resides within the perimeter of the second splitboard ski.
FIG. 43 illustrates a flow diagram showing the sequence of going from riding mode to touring mode illustrated in FIGS. 39-42.
DESCRIPTION
The terms “top, “bottom,” “upper,” “front,” and “back,” are relative terms used throughout the to help the reader understand the figures. Unless otherwise indicated, these do not denote absolute direction or orientation and do not imply a preference. When describing the figures, the terms “top,” “bottom,” “front,” “rear,” are from the perspective of how a typical splitboard rider would view the splitboard or components while standing on the board in a conventional riding or touring position. Specific dimensions should help the reader understand the scale and advantage of the disclosed material. Dimensions given are typical and the claimed invention is not limited to the recited dimensions. The figures are not necessarily to scale.
Certain features or components and some details of conventional elements may not be shown in the interest of clarity, explanation, and conciseness. For example, a splitboard may include bindings for securing the rider's feet to the splitboard. The splitboard may also include hardware associated with the bindings such as pucks, tracks, sliders, and climbing bars. The splitboard may also include tip and tail hooks for stabilizing the front and rear ends of the splitboard respectively. These parts are omitted for clarity. In the present disclosure they represent part of the environment and one of ordinary skill in the art ready knows how to apply them to a splitboard.
Referring to similarly named part with an ordinal prefix such as first, second, or third helps distinguish the parts from one another when referred to together. This implies no preference of one part over the other. Similarly, referring to examples using ordinal prefixes or as alternative examples, does such not infer any preference of one example over the other.
The Description refers to figures, where like numerals refer to like elements throughout the several views. FIGS. 1-3, 5, 7-28 and 30-37 illustrate a latching device 1 or portions of the latching device 1, conceived and implemented by the inventor, for joining splitboard skis of a splitboard 3. FIGS. 38-42 illustrate an alternative implementation of a latching device 40, conceived and implemented by the inventor, for joining splitboard skis of a splitboard 3, that shares common principles of operation with the latching device 1 of FIGS. 1-3, 5, 7-28 and 30-37. These common principles will be discussed within this Description.
FIGS. 1-28 illustrate in top perspective view (FIGS. 1, 7, 13, 17, 21 and 25), enlarged partial perspective view (FIGS. 11 and 12), top view (FIGS. 3, 9, 15, 19, 23, and 27), bottom view (FIG. 4), and enlarged partial views (FIGS. 2, 5, 6, 8, 10, 14, 16, 18, 20, 22, 24, 26, and 28) various features of the latching device 1 by demonstrating how to go from riding mode to touring mode. The latching device 1 includes a crossbar assembly 4 (FIGS. 1-3, 5, 7-28) and a bracket assembly 7 (FIGS. 1-3, 5, 7-17, 19, 21, 23, 25-28). The bracket assembly 7 is secured to a first splitboard ski 3a. The crossbar assembly 4 is secured to a second splitboard ski 3b. FIG. 29 illustrates a flow diagram showing a sequence 60 or steps of going from riding mode to touring mode illustrated in FIGS. 1-28. FIG. 30 illustrates an exploded top perspective view that includes the latching device 1 and a portion of each of the splitboard 3, the first splitboard ski 3a, and the second splitboard ski 3b. Referring to FIGS. 2, 5, 8, 10-12, 14, 16, 18, 20, 22, 24, 26, 28, 30, and 31, the crossbar assembly 4 includes a lever 9 and a crossbar 11. The lever 9 is rotationally coupled to the crossbar 11. The bracket assembly 7 includes a bracket 12 and can include a bracket base 13 (FIGS. 2, 5, 8, 10-12, 14, 16, 26, 28, and 30). FIGS. 1-6 and 11, illustrate the splitboard 3 in riding mode with the crossbar assembly 4 and the bracket assembly 7 (FIGS. 1-3, 5, and 11) in a locked position, securing a first splitboard ski 3a and a second splitboard ski 3b together. In FIG. 29, this is step 61. FIGS. 7-10 and 12 illustrate the crossbar assembly 4 and the bracket assembly 7 in an unlocked position. In FIG. 29, this is step 62. FIGS. 13-16 illustrate the crossbar assembly 4 and the bracket assembly 7 in the unlocked position of FIG. 7 and with the first splitboard ski 3a and the second splitboard ski 3b slid free from each other. In FIG. 29, this is step 63. FIGS. 17-20 illustrate the splitboard 3 and the latching device 1 with the first splitboard ski 3a and the second splitboard ski 3b (FIGS. 17 and 19) are slid free from each other and separated apart with a lever 9 of a crossbar assembly 4 rotated back to its original position from FIG. 1. In FIG. 29, this is step 64. FIGS. 21-24 illustrate the crossbar assembly 4 being rotated toward the second splitboard ski 3b into a touring mode position. In FIG. 29, this is step 65. FIGS. 25-28 illustrate the splitboard 3 and the latching devices 1 in touring mode. In FIG. 29, this is step 66. In touring mode, the crossbar assembly 4 and the bracket assembly 7 are completely within the perimeter boundary of their respective splitboard skis. To go from touring mode to riding mode, the steps are reversed, starting with step 66 and ending with step 61.
FIG. 38-42 illustrate various features of alternative version of the latching device 40 by demonstrating how to go from riding mode to touring mode. FIG. 43 illustrates a flow diagram showing the sequence 70 of going from riding mode to touring mode illustrated in FIGS. 39-42. Referring to FIGS. 38-42, the latching device 40 includes a crossbar assembly 41 and a bracket assembly 42. In FIG. 39, the crossbar assembly 41 and bracket assembly 42 are locked together for riding mode. In FIG. 43, this is step 71. In FIG. 40, a lever 43, that forms a part of the crossbar assembly 41, is rotated to unlock the bracket assembly 42 from the crossbar assembly 41. In FIG. 43, this is step 72. FIG. 41 illustrates the latching device 40 in the unlocked position of FIG. 40 and with the second splitboard ski 3b and the first splitboard ski 3a are slid free of each other. In FIG. 43, this is step 73. FIG. 42 illustrates the crossbar assembly 41 rotated toward the second splitboard ski 3b into touring mode with the crossbar assembly 41 entirely residing within the perimeter of the second splitboard ski 3b. In FIG. 43, this is step 74. To go from touring mode to riding mode, the steps are reversed, starting with step 74 and ending with step 71.
Referring to FIGS. 2, 5, 11, and 30, the latching device 1 depends on compressive force between a projected portion 9a and the bracket 12 to hold the crossbar assembly 4 and the bracket assembly 7 together. Referring to FIGS. 30, 31, and 33, the projected portion 9a can be an eccentric portion. An eccentric portion is so called because it is not centered (i.e., eccentric) about the rotational axis 15 of the lever 9. The projected portion 9a can also be other shapes that create a compressive force as the lever 9 is rotated. For example, it can be a logarithmic spiral or can be NURBS. The projected portion 9a is illustrated as, integral with, and projecting directly from, the lever 9. The projected portion 9a can be a separate member from the lever 9 but rotationally coupled to it (i.e., rotates with the lever 9 as the lever 9 is rotated).
One important advantage of the latching device 1 is that it counteracts or resists shear forces between the first splitboard ski 3a and the second splitboard ski 3b. Shear forces can cause up and down motion of one splitboard ski relative to the other. This can cause one of the splitboard skis to snag in the snow leading to the rider falling. Referring to FIGS. 2 and 30, a portion of the crossbar 11 is positioned between the bracket 12 and first splitboard ski 3a. The bracket assembly 7 is confined within the perimeter boundary of the first splitboard ski 3a (i.e., the bracket assembly 7 is constrained to within the inside lengthwise edge 3c (FIG. 30). This combination helps prevent up and down movement between the first splitboard ski 3a and the second splitboard ski 3b.
In FIGS. 38-42, the latching device 40 similarly depends on compressive force between a projected portion 43a rotationally coupled to the lever 43 and a bracket 44 to hold the crossbar assembly 41 and the bracket assembly 42 together. The projected portion 43a can be integral with the lever 43 or a separate component rotationally coupled to the lever 43. The projected portion 43a can be eccentric, non-eccentric or other shapes suitable for creating a compressive force between the lever 43 and the bracket 44.
One difference between the latching device 1 of FIGS. 2, 5, 8, 10-13, 16, 18, 20, 22, 24, 26, 28, 30, 31 and the latching device 40 of FIGS. 38-42 is the rotation angle of the lever 9, 43, respectively, between the locked and unlocked positions. Referring to FIGS. 2 and 8, the lever 9 the is rotated at an angle R=90° (FIG. 8) counterclockwise from the locked position (FIG. 2) to the unlocked position (FIG. 8). Referring to FIGS. 2 and 5, the projected portion 9a engages the bracket 12 within the bracket assembly 7. Referring to FIGS. 11 and 12, the lever 9 can have its angle of rotation restricted by a stop 9c projecting from the bottom of the lever 9 toward the crossbar top surface. The stop 9c engages the crossbar 11 on a side surface of the crossbar 11 at both the beginning and end of rotation. The side surface projects downward from the crossbar top surface toward the first splitboard ski 3a. The stop 9c is also illustrated in FIGS. 30, 31, and 33. In FIGS. 39 and 40, the lever 43 is rotated at an angle of 180° clockwise from the locked position (FIG. 39) to the unlocked position (FIG. 40). FIGS. 2, 8 and FIGS. 39 and 40, teach two examples of how a projected portion 9a, 43a and lever 9, 43 of a crossbar assembly 4, 41 can be rotated to engage and disengage the bracket 12, 44 of the bracket assembly 7, 42. The inventor envisions that it is well within the scope of his latching device 1, 40 to use other rotational engagement angles.
Referring to FIGS. 30 and 31, the engagement between the projected portion 9a of the lever 9 and the bracket 12 can be by direct contact or through intermediary member. For example, the projected portion 9a can be inset from the lever edge 9b near to the rotational axis 15 of the lever 9 with the engagement through an intermediary. For example, the intermediary can be the ring bushing 17 that surrounds the projected portion 9a. The projected portion 9a can define the lever edge 9b and engagement can be through direct contact. Direct contact between the projected portion 9a and bracket 12 is simpler, using less parts than using an intermediary. However, using an intermediary allows using a different material for the contact surface than the lever's material. For example, the lever 9 and bracket 12 (FIG. 30) can be for example, thermo-plastic, steel, titanium, or aluminum. The ring bushing 17, or other intermediary, could be made of the same materials or a different material such, as brass.
Using FIG. 30, we will discuss parts that could make up the latching device 1 of FIGS. 1-28 in more detail. Using FIGS. 34-37, we will discuss how to adjust the tension of the bracket assembly 7. Using FIGS. 31-33, we will discuss the lever 9 and typical associated hardware in relation to the crossbar 11 (FIG. 31). Referring to FIG. 30, the crossbar assembly 4 can include the crossbar 11, lever 9, and a bridge 19. The bridge 19 includes standoffs 19a, 19b projecting directly from the bridge 19 toward the second splitboard ski 3b. The standoffs 19a, 19b include threaded apertures 19c, 19d, respectively that pass through the bridge 19. The bridge 19 is secured to the second splitboard ski 3b by threaded fasteners 21, 23 threadably engaging the threaded apertures 19c, 19d, respectively. The threaded fastener 21 engages the standoff 19a through an aperture 11a in the crossbar 11 and a washer 25 between the crossbar 11 and the standoff 19a. The threaded fastener 23 engages the standoff 19b without engaging the crossbar 11. Aperture 11a can be non-threaded. This configuration allows the crossbar 11 to rotate about a rotational axis 27 while the bridge 19 remains stationary and fixed to the second splitboard ski 3b by the threaded fasteners 21, 23. The crossbar end 11b is shaped and positioned regarding the standoff 19b, that standoff 19b acts as a rotational stop for the crossbar 11.
Referring to FIGS. 30, and 34-37, the bracket assembly 7 can include the bracket base 13, the bracket 12, and a threaded fastener 29. The threaded fastener 29 shown is a set screw. The bracket base 13 includes standoffs 13a, 13b with threaded apertures 13c, 13d (FIG. 30), respectively. The threaded fastener 29 engages threaded aperture 13e in the vertical face 13g of the bracket base 13. The bracket 12 includes a first bracket portion 12a and a second bracket portion 12b. The bracket 12 can be an L-bracket with the second bracket portion 12b projecting upward from the first bracket portion 12a. The lengthwise axis of the second bracket portion 12b is illustrated as being parallel to the inside lengthwise edge 3c of the first splitboard ski 3a. The first bracket portion 12a includes standoffs 12c, 12d. The standoffs 12c, 12d include slots 12e, 12f respectively. Threaded fasteners 30, 31 threadably engage the threaded apertures 13c, 13d (FIG. 30) through slots 12e, 12f, respectively and secure the bracket base 13 to the first splitboard ski 3a while allowing the bracket 12 to slide along the slots perpendicular to the inside lengthwise edge 3c of the first splitboard ski 3a. Referring to FIG. 6, the heads of the threaded fasteners 21, 23 engage the bottom of the second splitboard ski 3b. The heads of threaded fasteners 30, 31 engage the bottom of the first splitboard ski 3a. The heads of the threaded fasteners 21, 23, 30, 31 can be countersunk into their respective splitboard skis so that the bottom surface of the splitboard 3 remains smooth. For insert-style splitboards, threaded fasteners 21, 23, 30, 31 do not secure the latching device 1 of FIG. 2 through the top of board. Instead the apertures are replaced with unthreaded apertures with threaded inserts installed into the unthreaded apertures from the top of the splitboard 3. The threaded fasteners 21, 23, 30, 31 can be threaded from the top of the bracket base 13 and the crossbar assembly 7 of FIG. 2 into the threaded inserts.
Referring to FIGS. 34-37, one advantage of latching device 1 of FIGS. 1-3, 5, 7-17, 19, 21, 23, 25-28, 30 and 31, is that the compressive force between the crossbar assembly 4 and the bracket assembly 7 can be adjusted by a single threaded fastener, for example, a set screw. This threaded fastener 29 allows for fine adjustment and is independent of the fasteners that retain the bracket assembly 7 to the first splitboard ski 3a. Once fine adjustment is made, the fasteners retaining the bracket assembly 7 can be further tightened while the bracket 12 is in the latched position to prevent movement of the bracket 12 when it is in the unlatched position. When the bracket base 13 is secured to the first splitboard ski 3a, the bracket 12 may move to the extent of the slots 12e, 12f along the lengthwise axis 32 of the bracket base 13. The threaded fastener 29 limits the extent of movement of the bracket 12 toward the inside lengthwise edge 3c of the first splitboard ski 3a. When a force F is applied to the inside edge 12g by the projected portion 9a of the lever 9 from FIG. 30, the movement of bracket 12 toward the inside lengthwise edge 3c will be limited by the position of the threaded fastener 29. In FIGS. 34 and 36, for example, with the threaded fastener 29 threaded inward into the threaded aperture 13e, when a force F is applied to the inside edge 12g, the outside edge 12h of the bracket 12 is a distance D away from the edge of the first splitboard ski 3a. In FIGS. 35 and 37, the threaded fastener 29 is threaded outward toward the opening of the threaded aperture 13e, when a force F is applied to the inside edge 12g, the outside edge 12h of the bracket 12 will approximately aligned with the inside lengthwise edge 3c of the first splitboard ski 3a. Once the splitboard rider adjusts the position of the bracket 12 using the threaded fastener 29, while in the latched position, the he or she can further tighten the threaded fasteners 30, 31 so the bracket 12 remains stationary while latched or unlatched.
Referring to FIGS. 30 and 31, we will describe the lever 9 in relation to the crossbar 11 in more detail. The lever 9 attaches to the crossbar 11 by a pivot 33 that passes through a washer 34, an aperture 9d in the lever 9, aperture 11c in the crossbar 11, with a threaded aperture 33a within the pivot 33 threadably engaging a threaded fastener 35. Referring to FIG. 31, the end of the pivot body 33b can be keyed 33c to the aperture 11c in the crossbar 11 so that once engaged with the aperture 11c, the pivot body 33b cannot rotate. The pivot body 33b also can include a smooth portion so the lever 9 may rotate about the pivot body 33b via aperture 9d.
FIG. 32 shows a top view of the lever 9. FIG. 33 shows a bottom view of the lever 9. FIG. 32 shows the relationship between the aperture 9d, which is the center of rotation for the lever 9, and the lever edge 9b proximate to the center of rotation. FIG. 33 shows the relationship between the aperture 9d, the projected portion 9a and the lever edge 9b. The lever edge 9b proximate to the center of rotation is offset from the lengthwise axis of the lever 9. This creates an over center clamping action as the lever 9 engages the bracket 12 of FIG. 30. This prevents the lever 9 from working loose while riding because the maximum force is before the actual clamping position of the lever 9. This is just one example of a lever 9 within the scope of the latching device 1. The inventor envisions using levers 9 with projected portions 9a, eccentric portions, and lever edge 9b with shapes other than those of FIGS. 32 and 33. For example, the projected portion 9a, eccentric portion, or lever edge 9b can be a logarithmic spiral or can be a NURBS.
Referring to FIGS. 39 and 40, we will discuss the latching device 40 in more detail. The crossbar assembly includes the lever 43, a crossbar 45, pins 46, 47 projecting upward from the crossbar 45, and a threaded fastener 50 and a nut 49 or other threaded fastener retainers. The lever 43 includes a tab 43b projecting directly from one of the lengthwise edges of the lever 43. The tab 43b is located closer to the end of the lever 43 distal to the projected portion 43a. The tab 43b includes a slot 43c. Referring to FIG. 39, when the lever 43 is rotated toward the second splitboard ski 3b and is in the locked position, the tab 43b engages the pin 46. Referring to FIG. 40, when the lever 43 is rotated toward the first splitboard ski 3a (i.e., opposite of FIG. 39), the lever 43 is held in place by pin 47. Referring to FIG. 42, the crossbar 45 pivots about the threaded fastener 50 and nut 49. The crossbar 45 is stopped from pivoting in both its riding mode and touring mode positions by threaded fastener 51 and nut 52.
Referring to FIG. 39, the bracket assembly 42 includes the bracket 44, threaded fasteners 53, 54 and threaded retainers 55, 56. The bracket 44 includes inset portions 44c, 44d and slots 44e, 44f in the bottom surface of inset portions 44c, 44d, respectively. The threaded fasteners 53, 54 secure the bracket 44 to the first splitboard ski 3a by threadably engaging the threaded retainers 55, 56, respectively. The threaded fasteners 53, 54 pass through the slots 44e, 44f and engage the threaded retainers 55, 56 from within the inset portions 44c, 44d, respectively. The bracket 44 includes a first bracket portion 44a and a second bracket portion 44b. The bracket 44 is illustrated as an L-bracket with the lengthwise axis of the first bracket portion 44a approximately perpendicular to the lengthwise axis of the second bracket portion 44b. However, the inventor envisions that other bracket shapes can be used that fall within the spirit of the latching device 40.
The compressive force between the bracket 44 and the projected portion 43a of the lever 43 can be adjusted by loosening the threaded fasteners 53, 54, sliding the bracket 44 along the slots 44e, 44f to the desired position, and then retightening to adjust the fasteners.
Described are latching devices in several examples, for securing the first splitboard ski 3a and the second splitboard ski 3b in a splitboard 3. This disclosure does not intend to limit the claimed invention to the examples, variations, and exemplary embodiments described in the specification. Those skilled in the art will recognize that variations will occur when embodying the claimed invention in specific implementations and environments. For example, the bracket 12 of FIGS. 2, 5, 8, 10, 11, 12, 14, 16, 26, and 28, and the bracket 44 of FIGS. 39-42 are L-shaped. The inventor conceives that other bracket shapes are within the scope of the latching device 1, 40. For example, a linear bar positioned parallel to the inside lengthwise edge 3c of the first splitboard ski 3a can replace brackets 12, 44. This linear bar can engage the projected portions 9a, 43a in a similar manner as described for the brackets 12, 44. The bracket 12, 44, or variations of the bracket, such as the linear bar, could be fixed directly to the first splitboard ski 3a. There, for example, the bracket assembly 7 could include a bracket 12 and threaded fasteners and not require a bracket base 13. The bracket 12, 44 may be integrally formed or constructed of several pieces. Similarly, the crossbar 11, 45 may be integrally formed or constructed of several pieces. For splitboards with threaded inserts for mounting splitboard latching devices, the threaded fasteners 30, 31 in FIGS. 34-37 can be threaded from the top of the bracket base 13 into the threaded inserts that are inserted into non-threaded apertures rather than through threaded apertures from the bottom of the splitboard.
It is possible to implement certain features described in separate embodiments in combination within a single embodiment. Similarly, it is possible to implement certain features described in single embodiments either separately or in combination in multiple embodiments. For example, the bracket assembly 7 of FIGS. 2, 5, 8, 10, 11, 12, 14, 16, 26, and 28 can readily be substituted for the bracket assembly 42 of FIGS. 39-42 with some minor modifications to the crossbar assembly 41. Similarly, the bracket assembly 42 can be used with the crossbar assembly 4. The inventor envisions these and other variations fall within the scope of the claimed invention.
Threaded fasteners are discussed throughout the Description. Threaded fasteners can be any threaded fastener capable of performing the function the described. For example, threaded fasteners for holding either the bracket or crossbar assemblies to their respective splitboard skis can be any threaded fastener capable of performing that function. Typical these could be machine thread screws. However, bolts or other threaded fasteners could be readily substituted. The threaded fastener 29 in FIGS. 32-34 can be any threaded fastener capable of acting as a threaded adjustment device. Typically, a set screw can be used. However, other threaded fasteners can be readily substituted. Threaded fasteners in the Description are often depicted with hexagonal recess or “Allen” heads (i.e., capable of being driven by a hexagonal head or Allen head wrench or tool). Philips, slot, Frearson, clutch, square recess, tri-wing, a recessed star pattern often sold under the registered trademark TORX® by Textron Industries, Inc, and other tool receiving heads known in the art can be readily substituted.
The appended claims are not to be interpreted as including means-plus-function limitations, unless a claim explicitly evokes the means-plus-function clause of 35 USC § 112 para (f) by using the phrase “means for” followed by a verb in gerund form.
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 present invention.
“Optional” or “optionally” is used throughout this disclosure to describe features or structures that are optional. Not using the word optional or optionally to describe a feature or structure does not imply that the feature or structure is essential, necessary, or not optional.
While the examples and variations are helpful to those skilled in the art in understanding the claimed invention the claimed invention is defined solely by the claims and their equivalents.
Patent Grant
10252146
