Patent Abstract:
The invention relates to an adjustable ski pole basket that can adjust the basket area from a position useful in low-buoyancy-need conditions, such as packed powder, to a position useful in high-buoyancy-need conditions, such as powder. The basket has a fixed based and a movable petal. The petal moves from a compact position useful in low-buoyancy-need conditions to an expanded position useful in high-buoyancy-need conditions, and back. In certain embodiments, the petal is biased toward the expanded position.

Full Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the benefit of U.S. Provisional Patent Application No. 61/078,074 filed on Jul. 3, 2008, and U.S. Provisional Patent Application No. 61/081,860 filed on Jul. 18, 2008. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention is in the technical field of sporting equipment. More particularly, the present invention is in the technical field of alpine ski equipment and relates to a ski pole having an adjustable basket. 
     2. Background of the Invention 
     Conventional ski poles have, at the proximity of the point of contact with the ground (snow), a fixed radius basket, which is usually a horizontal round disk that is perpendicular to the pole, and parallel to the ground, and offers floatation for the ski pole. Floatation is important so that the ski pole does not penetrate more than four or five inches into the snow, thus allowing the skier to rely on the pole for balance, weight-shifting during a directional-change (turn), or for pushing from a standing start. The degree of floatation that a basket offers greatly depends on its radius, thus a larger radius would offer greater floatation. 
     A drawback of a larger radius basket is that it creates more drag to the skier, both aerodynamically and dragging through the snow (between turns). Historically, the skier has had to commit to a certain fixed-radius basket prior to skiing, since the basket of a traditional ski pole is designed and manufactured in a fixed position with a fixed-radius surface area. Some secondary-market baskets have designed an adjusting feature that might only offer a marginally larger surface area, but could only be adjusted while the skier is standing still, and not instantaneously nor simultaneously. 
     U.S. Pat. Nos. 6,460,891 and 6,755,440 to Jones disclose a ski pole basket that articulates to accommodate different ski conditions. The snow engaging end of the shaft has an adjustable basket designed to prevent the tip of the ski pole from sinking into soft snow past a predetermined depth. The basket may be adjusted for differing snow conditions to provide greater surface area for engaging softer snow or less surface area to reduce wind resistance for use with hard snow conditions. The basket is created in two parts, an upper basket and a lower basket which is rotatable relative to the upper basket. When it is desirable to have less surface area, the lower basket may be rotated to be aligned with the upper basket. However, for conditions where more surface area is desired, the lower basket may be rotated to any desired position such as approximately 45 degrees so that the extensions of the lower basket can travel and are located within the area existing between the extensions of the upper basket. The rotation of the lower basket relative to the upper basket needs to be manually operated by the skier while the skier is standing still. 
     There is a need in the art to provide an adjustable ski basket which can be automatically operated while the skier is skiing. 
     SUMMARY OF THE INVENTION 
     The present invention has met this need. The invention relates to an adjustable ski pole basket, wherein the adjustable ski pole basket has a petal configured to move from a compact position to an expanded position. In the compact position, the adjustable ski pole basket provides adequate buoyancy for packed-powder/groomed conditions or low-buoyancy-need conditions. In the expanded position, the adjustable ski pole basket provides adequate buoyancy for powder conditions or high-buoyancy-need conditions. 
     In one embodiment, the invention is a ski pole having a hollow shaft, a ski pole grip coupled to the hollow shaft, and a cone-basket combination attached to the end of the hollow shaft. The cone-basket combination includes a protective cone and a fixed basket affixed to a terminus of the protective cone, wherein the fixed basket has a fixed radius. A petal is housed in the protective cone of the cone-basket combination when the petal is in a compact position and extends through an orifice in the protective cone when the petal is moved to an expanded position. A kinetic rod is positioned within the hollow shaft in communication with the petal and an actuator. Actuation of the actuator moves the kinetic rod towards a tip, wherein the kinetic rod acts on the petal to move the petal to the expanded position. 
     In one embodiment, the present invention provides a ski pole that includes a hollow shaft, a ski pole grip coupled to the hollow shaft, and a cone-basket combination attached to an end of the hollow shaft. The cone-basket combination includes a protective cone and a fixed basket affixed to a terminus of the protective cone. The fixed basket has a fixed footprint. A petal is housed in the protective cone when in a compact position and extends through an orifice in the protective cone and in an approximately perpendicular direction relative to the hollow shaft when in an expanded position. A kinetic rod is positioned within the hollow shaft and is configured to co-act with the petal to move the petal from a compact position to an expanded position. A biasing member biases the kinetic rod towards a tip-end of the ski pole where the kinetic rod acts on the petal by applying force to the petal thereby moving the petal to the expanded position. When in the expanded position, the petal has a footprint that is greater than the fixed footprint of the fixed basket. Preferably, the ski pole includes an actuator positioned on and extending through the ski pole grip. The actuator co-acts with a stop capsule positioned above the kinetic rod. In the compact position, the stop capsule is positioned against a ledge. Force applied to the actuator releases the stop capsule from the ledge, thereby allowing the biasing member to move the kinetic rod and the petal to the expanded position. The grip includes a removable cap and a pull rod connected to the stop capsule and/or kinetic rod. Removal of the removable cap raises and brings the stop capsule into contact with the ledge, and moves the petal to the compact position. 
     In another embodiment, the invention is an adjustable ski pole basket having a central stationary member, a petal connected to the central stationary member configured to move between a compact position and an expanded position, and an actuator in communication with the petal configured to move the petal from the compact position to the expanded position upon actuation. 
     In another embodiment, the invention provides a ski pole that includes an adjustable ski pole basket configured to fit around the ski pole. The adjustable basket includes a central stationary member having an aperture extending therethrough configured to accept the ski pole. A petal is pivotally connected to the central stationary member by a connecting member. The petal is biased to rotate about a pivot point on the central stationary member from a compact position to an expanded position. The connecting member extends through at least a portion of the central stationary member and at least a portion of the petal. The adjustable basket further includes a biasing member for biasing the petal to the expanded position. The biasing member is associated with the connecting member. The petal includes a catch extending from an interior surface of the petal. A latch hub is slidably engaged to the ski pole. The latch hub is positioned on a handle side of the ski pole relative to the central stationary member. It is biased toward a first position or upward position relative to the central stationary member. The latch hub includes a resilient latch positioned on the latch hub and configured to accept the catch when the petal is in the compact position and the latch hub is in the first position. 
     In another embodiment, the invention is an adjustable ski pole basket. The adjustable ski pole basket includes a central stationary member and a petal pivotally connected to a first side or top of the central stationary member by a connecting member. The petal is biased to rotate about a pivot point on the central stationary member from a compact position to an expanded position. The connecting member extends through at least a portion of the central stationary member and at least a portion of the petal. The adjustable ski pole basket further includes a biasing member for biasing the petal to an expanded position, wherein the biasing member is associated with the connecting member. The petal includes a catch extending from an interior surface of the petal. The adjustable ski pole basket further includes a latch hub associated with the first side portion of the central stationary member and biased toward a first position or upward position relative to the central stationary member. A resilient latch is positioned on the latch hub and is configured to accept the catch when the petal is in the compact position and the latch hub is in the first position. 
     In another embodiment, the invention is a method of retrofitting a ski pole with an adjustable ski pole basket. The method includes providing a ski pole including an elongated member and a ring member at an end portion thereof. The adjustable ski pole basket described above is attached to the ring member on the ski pole. 
     In another embodiment, the invention is a method of retrofitting a ski pole with an adjustable ski pole basket. The method includes providing a ski pole including an elongated member. An embodiment of the adjustable ski pole basket described above is attached to an end portion of the ski pole. 
     In another embodiment, the invention is a method of converting a basket for groomed conditions to a basket for powder conditions. The method includes moving a petal from a compact position to an expanded position. The petal is rotated about a pivot point from a compact position to an expanded position. The petal includes a catch, which extends from the petal. The catch is released from a resilient latch positioned above the adjustable ski pole basket. The petal is then rotated about the pivot point to an extended position. In another embodiment, the petal is connected to a basket coupler. The basket coupler is connected to a kinetic rod. The kinetic rod is in communication with an actuator and a removable cap, wherein actuation of the actuator causes the kinetic rod to move towards a tip-end of the ski pole thereby moving the petal to the expanded position, and removing the removable cap causes the kinetic rod to move toward a handle-side end of the ski pole thereby moving the petal to the compact position. 
     In another embodiment, the invention is a method of converting a basket for groomed conditions to a basket for powder conditions. The method includes moving a petal from a compact position to an expanded position. The petal is slid through an orifice in a protective cone from a compact position to an expanded position. The petal is in communication with a kinetic rod positioned within a hollow shaft of a ski pole. Movement of the kinetic rod to a first position or upward position moves the petal to the compact position. Movement of the kinetic rod to a second position or downward position moves the petal to the expanded position. 
     In another embodiment, the invention is an adjustable ski pole basket having a central stationary member with an aperture configured to accept a ski pole. The central stationary member may have an approximately circular shape, or may have some other shape. The aperture is configured to accept at least a portion of the ski pole. The aperture provides communication between the base and handle-facing side of the central stationary member. Ski poles are generally tapered so that the portion of the ski pole closest to the handle has a larger diameter than the portion of the ski pole closest to a ski pole tip. Some ski poles have a ring positioned near a tip of the ski pole. Baskets can also be secured to the ski pole with an adhesive. Because of the variation in ski pole diameters and the optional presence of a ring, one embodiment of the invention is an attachment configured to be accepted by the aperture and further configured to accept a ski pole and/or engage a ski pole ring. Thus, the aperture can be configured to accept a ski pole having a large diameter. With the attachment, the adjustable ski pole basket can be attached to ski poles having a smaller diameter, or ski poles that do not have a ring. 
     The adjustable ski pole basket is secured to the ski pole by any means known to one of ordinary skill in the art. For example, the adjustable ski pole basket can be secured to the ring on the ski pole, or adhered to the ski pole with an adhesive. One of ordinary skill would recognize other means of attaching the adjustable ski pole basket to a ski pole. 
     In one embodiment, the adjustable ski pole basket has at least one petal. Other embodiments of the adjustable ski pole basket have at least two, at least three, or at least four petals. Each petal is connected to the central stationary member by a connecting member. 
     In one embodiment, the petal is connected to a handle-facing side or top of the central stationary member. The central stationary member has a base that is substantially perpendicular to a shaft of the ski pole. The base is the portion of the central stationary member that contacts the snow or ground during operation. Thus, it is also substantially parallel to the ground. 
     The length of the petal can vary based on the position where it is fixed to the central stationary member. However, the petal should have a length sufficient to provide adequate buoyancy in powder conditions when in the expanded position. The petal provides a footprint, which is greater than the fixed footprint provided by the central stationary member. The footprint is measured between two points furthest from the center of the base along an imaginary straight line that passes through the center of the base. 
     The petal can have various shapes. In one embodiment, a bottom portion of the petal is substantially flat. In another embodiment, the bottom portion of the petal is curved towards a handle side of the ski pole when the petal is in the expanded position. 
     The connecting member extends through at least a portion of the central stationary member and at least a portion of the petal. In one embodiment, the connecting member extends through at least a portion of the petal at a pivot point. The connecting member permits the petal to rotate about the pivot point. 
     In one embodiment, the pivot point allows the petal to rotate on a plane. The plane is at an angle relative to the plane of the base of the central stationary member. Due to the angle, the petal can be rotated around the pivot point to a compact position, wherein an outside tip of the petal is in close proximity to the ski pole. 
     The petal includes a catch extending from an interior surface of the petal. The catch is configured to engage a resilient latch positioned on a latch hub when the latch hub is in a first position or upward position. In embodiments with multiple petals, each petal has a corresponding catch, and each catch has a corresponding resilient latch. 
     In one embodiment, the latch hub is connected to the central stationary member by a guide. The guide extends from the central stationary member through a guide aperture in the latch hub. In this embodiment, the latch hub is biased to a first position or upward position by a latch hub biasing member, such as a compression spring. In another embodiment, the adjustable ski pole basket includes a second guide extending from the central stationary member through a second guide aperture in the latch hub. In another embodiment, the adjustable ski pole basket includes a third guide extending from the central stationary member through a third guide aperture in the latch hub. Other embodiments include additional guides and apertures in the latch hub. 
     The guide aperture extends through at least a portion of the latch hub from a bottom portion of the latch hub. In certain embodiments, the guide aperture extends through the latch hub and provides communication between the tip-end side of the latch hub and a handle-side of the latch hub. 
     The latch hub slidably engages the ski pole and is positioned on a handle side of the ski pole relative to the central stationary member. The latch hub is biased toward a first position or upward position relative to the central stationary member. In the first position, the latch hub positions the resilient latch to co-act with the catch. Thus, when the latch hub is in the first position and the petal is in the compact position, the resilient latch prevents the petal from rotating to the expanded position by contacting the catch and holding the catch and the petal in the compact position. 
     The petal is biased to the expanded position by a biasing member. In one embodiment, the biasing member is associated with the connecting member. In another embodiment, the biasing member is a spring. 
     Certain embodiments include an actuator. The actuator slidably engages the ski pole. It is positioned on the handle side of the ski pole relative to the latch hub. The actuator can act on a handle-side portion of the latch hub thereby moving the latch hub to a second position or downward position. In the second position, the catch releases from the resilient latch. Once released, the petal, which is biased toward the expanded position, rotates to the expanded position about the pivot point. 
     In other embodiments, the actuator is not required. The top of the latch hub extends along the ski pole to a position sufficient to allow an operator to push on the top of the latch hub, thereby moving the latch hub to the second position. 
     In one embodiment, the adjustable ski pole basket includes a stop. The stop is associated with the petal and prevents the petal from rotating in a direction around the pivot point beyond the expanded position. 
     Another embodiment of the invention is a method of retrofitting a ski pole with an embodiment of the adjustable ski pole basket described above. The adjustable ski pole basket can be affixed to the ski pole by means known to one within the art. In one embodiment, the method of retrofitting a ski pole with the adjustable ski pole basket includes providing the ski pole. The ski pole includes an elongated member. In one embodiment, an embodiment of the adjustable ski pole basket described above is attached to a ring member on the ski pole. In another embodiment, the method of retrofitting further includes removing an existing basket. In another embodiment, the adjustable ski pole basket is adhered to the ski pole by an adhesive. The adhesive can be any adhesive within the art to adhere baskets to ski poles. In another embodiment, an attachment is inserted into the aperture on the central stationary member to allow the aperture to accept and be secured to the ski pole. 
     Another embodiment of the invention is a method of converting a basket for groomed conditions to a basket for powder conditions. This method includes rotating a petal from a compact position to an expanded position. In one embodiment, this method further includes releasing a catch extending from a petal from a resilient latch positioned above a ski pole basket. The petal is rotated about a pivot point until the petal reaches the extended position. 
     It is therefore an object of the present invention to provide a ski pole designed to selectively produce a basket with an increased radius for increased floatation while the skier is skiing. 
     A further object of the present invention is to provide a ski pole including a first basket fixed in position and having a fixed radius and an expandable second basket having a radius that is greater than that of the first basket. 
     These and other objects and advantages of the invention will be made apparent from the following description taken together with the drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an elevational cross-section view of an upper part of a ski pole of the invention illustrating a mechanism for operating an expandable basket arrangement; 
         FIG. 2  is an elevational cross-section view of a lower part of the ski pole of  FIG. 1 , illustrating a cone-basket combination and a petal in an expanded position in phantom; 
         FIG. 3  is a bottom view showing a ski pole having an adjustable ski pole basket with petals in an expanded position; 
         FIG. 4  is a bottom view showing a ski pole having an adjustable ski pole basket with petals in a compact position; 
         FIG. 5  is a bottom view showing a ski pole having an adjustable ski pole basket with an alternate form of petals in an expanded position; 
         FIG. 6  is a side view of a ski pole having an adjustable ski pole basket in a compact position; 
         FIG. 7  is a side view of a ski pole having an adjustable ski pole basket in an expanded position; 
         FIG. 8  is a side view of an adjustable ski pole basket positioned on a ski pole in a compact position; 
         FIG. 9  is a view of an adjustable ski pole basket positioned on a ski pole in an expanded position; 
         FIG. 10  is a bottom view of an adjustable ski pole basket in a compact position; 
         FIG. 11  is a bottom view of an adjustable ski pole basket in an expanded position; 
         FIG. 12  is a side view of an adjustable ski pole basket positioned in an expanded position with one of the petals removed from a connecting member; 
         FIG. 13  is a cross-sectional view of an adjustable ski pole basket positioned on a ski pole in an expanded position; and 
         FIG. 14  is a cross-sectional view of an adjustable ski pole basket positioned on a ski pole in a compact position. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       FIG. 1  shows an upper part of a ski pole  10  having a hollow shaft  14  and a ski pole grip  24 . An actuator  38  extends through the ski pole grip  24  towards the hollow shaft  14 . The hollow shaft  14  houses a kinetic rod  12 . The kinetic rod  12  is biased towards a first position or a downward position relative to the ski pole grip  24  by a biasing member  46 . The kinetic rod  12  has a barrel capsule  48  positioned on a ski pole grip end of the kinetic rod  12 . The biasing member  46  is connected to the barrel capsule  48 . The kinetic rod  12  is held in a second position or an upward position relative to the tip  15  of the ski pole  10  by a ledge  42 . The ledge  42  is formed in hollow shaft  14  of ski pole  10 , and is positioned below the actuator  38 . 
     The ski pole grip  24  includes a removable cap  28  positioned on a first end or top  26  of the ski pole grip  24 . The removable cap  28  can be detached from the ski pole grip  24 , and can be moved away from the ski pole grip  24  following a guide attachment  30 , which is positioned within the hollow shaft  14  of ski pole  10 . The guide attachment  30  acts as a brace to guide the movement of the removable cap  28  in a direction parallel to the hollow shaft  14 . 
     A pull rod  32  is attached to the removable cap  28  and positioned within hollow shaft  14 . The pull rod  32  also extends through a stop capsule  34  and can be connected to the kinetic rod  12  or can pass through or over the barrel capsule  48 . A catch ball  36  is positioned within the hollow shaft  14  on a tip  15  end of the pull rod  32 . The catch ball  36  has a width large enough to prevent it from passing past the barrel capsule  48 . The stop capsule  34  is positioned between the kinetic rod  12  and the removable cap  28  within the hollow shaft  14 . When the kinetic rod  12  is in the second position or upward position, the stop capsule  34  abuts the ledge  42 . 
     The ski pole  10  also includes a spring hammer  40  positioned between the ski pole grip  24  and the hollow shaft  14  in communication with the actuator  38  and the stop capsule  34 . The hollow shaft  14  has an orifice  56  configured to allow passage of a portion of the spring hammer  40  therethrough when force F is applied to the actuator  38 . 
     A retention band  44  is positioned within hollow shaft  14  and provides constant pressure Pr against the stop capsule  34  when the kinetic rod  12  is in the second position or upward position, wherein the stop capsule  34  is moved and/or retained against the ledge  42  by the retention band  44  when the kinetic rod  12  is in the second position or upward position. 
     With particular reference to  FIGS. 1-4 , the kinetic rod  12  is connected a basket coupler  18  by a connector-pin  16 . The basket coupler  18  is also connected to a petal  20 . The basket coupler  18  and petal  20  in the expanded positions are shown in phantom in  FIG. 2 . 
     As particularly shown in  FIG. 4 , the connector pin  16  also connects the kinetic rod  12  to the basket coupler  18  ( FIG. 2 ) via two channels  22  ( FIG. 2 ) in the hollow shaft  14  of ski pole  10 . The basket coupler  18  is positioned outside the hollow shaft  14 . The connector pin  16  is positioned within the hollow shaft  14 . The channels  22  provide passage for the connector pin  16  to connect to the basket coupler  18 . They further enable the kinetic rod  12  via the connector pin  16  to move the basket coupler  18  ( FIG. 2 ) and petals  20  ( FIG. 3 ) from the compact position to the expanded position, as shown in phantom in  FIG. 3 . It also allows for the kinetic rod  12  to pull the basket coupler  18  ( FIG. 2 ) and the petals  20  from the expanded position as shown in phantom in  FIG. 2  to the compact position as shown in  FIGS. 2 and 4 . 
     In  FIG. 2 , an outer protective cone  50  covers the basket coupler  18  and petals  20 , so to prevent snow and/or ice from collecting therein, which could inhibit movement of the petals  20 . The protective cone  50  is connected to a fixed basket  52 . Protective cone  50  is connected to hollow shaft  14  via two coupler mounting rings  54 ,  55  mounted on a tip  15  facing side and a ski pole grip  24  facing side of the protective cone  50 . The widest diameter of protective cone  50  is approximately equal to the diameter or width of the fixed basket  52 . 
     As indicated in  FIG. 2 , the adjustable ski pole basket  58  has a first footprint and a second footprint. The first footprint is provided by a fixed basket  52  having a fixed radius xi. The fixed radius x 1  may be about 1.25 inches (32 mm) to about 1.4 inches (36 mm). The petals  20  provide the adjustable ski pole basket  58  with a second footprint having a second radius x 2 . The second radius x 2  may be about 2.5 inches (64 mm) to about 3.5 inches (89 mm). 
       FIG. 3  shows petals  20  in the expanded position, wherein petals  20  have passed through orifices  56  located between the fixed basket  52  and the protective cone  50  ( FIG. 2 ). Preferably, petals  20  are flexible yet rigid so that they smoothly pass through orifices  56  during both the expansion of petals  20  outside protective cone  50  and the collapsing of petals  20  within protective cone  50 . 
       FIG. 5  shows an alternate profile for the petals  20  in the expanded position according to the invention. Instead of a linear tapered design as illustrated in  FIG. 3 , the petals  20  shown in  FIG. 5  remain at a constant width in the expanded position. At the point where the petal  20  is housed inside the protective cone  50 , it folds, narrowing incrementally until it reaches the compact position and is approximately fully within the protective cone  50 . These petals  20  have varying leading edge thicknesses to overlap or under-lap themselves and/or adjacent petals as they are retracted into the protective cone  50 , so to accommodate the difference in area covered by the petals  20  in the expanded position and the area permitted by the confinements of the protective cone  50  when the petals  20  are in the compact position. 
     In operation of this embodiment, an operator, such as a skier, will apply force F to the actuator  38 . The actuator  38  is a deployment button which can be operated by a skier while skiing. The actuator will transfer that force F to the spring hammer  40 . The spring hammer  40  will transfer the force F to the stop capsule  34 . The stop capsule  34  will then slide across the ledge  42  while deforming the retention band  44 . Once the stop capsule  34  has moved a sufficient distance to disengage it from the ledge  42 , the biasing member  46  pulls the kinetic rod  12  towards the first position or downward position. As the biasing member  46  pulls the kinetic rod  12  towards the first position, the basket coupler  18  and petals  20  move from a compact position, as shown in  FIGS. 2 and 4 , to an expanded position, as shown in  FIGS. 3 and 5 , and shown in phantom in  FIG. 2 . 
     To retract the petals  20  into protective cone  50  and raise the basket coupler  18  and the kinetic rod  12 , the removable cap  28  is lifted away from the ski pole grip  24  by the operator. This action will move the stop capsule  34  and the kinetic rod  12  to the second position or upward position relative to the tip  15 . At the second position, the retention band  44  applies pressure to the stop capsule  34  to move and retain the stop capsule  34  over the ledge  42  until force F is applied to the actuator  38 . Once the stop capsule  34  is positioned over the ledge  42 , the petals  20  are approximately fully retracted to the compact position into the protective cone  50 , and can be again moved to the expanded position by actuation of the actuator  38 . Also, once the stop capsule  34  is positioned over the ledge  42 , the removable cap  28  can be returned to the ski pole grip  24 , and the interaction between the stop capsule  34  and the ledge  42  will hold the kinetic rod  12  in the second position until force F is applied to the actuator  38 . 
     Another embodiment of the invention is illustrated in  FIGS. 6-14 . In this embodiment, the adjustable ski pole basket  60  has a petal  66 . The petal  66  is connected to a handle  68  facing side of a central stationary member  70 . Each petal  66  is held in the compact position, as illustrated in  FIGS. 6 ,  8 , and  10 , by a corresponding resilient latch  72 , shown in  FIGS. 7 ,  9 , and  12 - 14 . 
     The resilient latch  72  is part of a latch hub  84 . The latch hub  84  is biased to a first position or upward position by a biasing member  78 , for example, a compression spring. The biasing member  78  extends from the central stationary member  70  and interacts with the latch hub  84  at or near a tip  15  facing side of the latch hub  84 . 
     To prevent the latch hub  84  from rotating, a guide  80  extends from a central stationary member  70  through a guide aperture  82  in the latch hub  84 . The biasing member  78  extends from the central stationary member  70  and interacts with the latch hub  84  at or near the guide aperture  82  for the guide  80  or the tip  15  facing side of the latch hub  84 . The biasing member  78  shown in the figures is a compression spring positioned around the guide  80 . 
     The resilient latch  72  has an opening  74  along a circumferential surface of the latch hub  84 . The opening  74  is positioned on a handle  68  side of the latch hub  84  relative to the resilient latch  72 . 
     The adjustable ski pole basket  60  is configured to accept a ski pole  62  through at least an aperture extending through the base  98  of the central stationary member  70 . Preferably, the aperture also extends through the latch hub  84 . 
     The central stationary member optionally includes a cover  102 . The cover  102 , shown in phantom in  FIG. 11 , covers the base  98  of the central stationary member  70  that would be exposed to the ground or snow during operation. 
     The connecting member  88  that connects the petal  66  to the central stationary member  70  is show in  FIG. 12 . To illustrate the connecting member  88 , a petal  66  has been removed in the illustration of the adjustable ski pole basket  60  in  FIG. 12 . The connecting member  88  extends from the central stationary member  70  to a pivot point P on the petal  66 . 
     The petal  66  is biased to the expanded position by a biasing member  86  such as a torsion spring. To illustrate the biasing member  86 , a petal  66  has been removed in the illustration of the adjustable ski pole basket  60  in  FIG. 12 . The biasing member  86  is a spring associated with the connecting member  88 . The biasing member  86  biases the petal  66  to rotate around the pivot point P to the expanded position. 
     In operation, an operator will apply force F on the handle-side portion  92  of the latch hub  84  or on the optional actuator  90 , which will transfer the force F to the handle-side portion  92  of the latch hub  84 . The force F can be applied by the operator&#39;s hand, or by sliding a second ski pole along the shaft of the ski pole  62  until contact is made with the handle-side portion  92  of the latch hub  84  or the actuator  90 . As a result of the force F, the latch hub  84  moves to a second position or downward position and compresses the biasing member  78 . The catch  76  that extends from the interior side  100  of the petal  66  releases from the resilient latch  72  by virtue of the latch hub  84  and resilient latch  72  moving towards the tip  15 . The catch  76  passes through at least a portion of the opening  74  in the latch hub  84 . By action of the biasing member  86 , the petal  66  rotates about the pivot point P to the expanded position. In the expanded position, the petals  66  provide a footprint x 2  that is larger than the fixed footprint x 1  provided by the central stationary member  70  (see  FIGS. 8 and 9 ). 
     From the expanded position, the petal  66  can be returned to the compact position by manually rotating the petal  66  about the pivot point P until the catch  76  comes into contact with the resilient latch  72  and holds the petal  66  from rotating. Since the latch hub  84  is biased to the first position or upward position, without force F being applied to the handle-side portion  92  of the latch hub  84 , the resilient latch  72  is in a position to accept the catch  76  once the petal  66  is rotated to the compact position. As the catch  76  passes over the resilient latch  72  while the petal  66  is being rotated from the expanded position to the compact position, the resilient latch  72  bends to accommodate the catch  76 . Once the petal  66  reaches the compact position, the resilient latch  72  is returned to its normal form and acts on the catch  76  and prevents the petal  66  from rotating. 
     In another embodiment, the invention is a method of retrofitting a ski pole  62  with an adjustable ski pole basket  60 . The method includes attaching the adjustable ski pole basket  60  to a ski pole  62 . The ski pole  62  may have a ski pole ring  94  for attaching baskets. In such embodiments, the adjustable ski pole basket  60  is attached to the ski pole ring  94 . If the ski pole  62  does not have a ski pole ring  94 , or if the ski pole ring  94  is not suitable for retrofitting the adjustable ski pole basket  60 , the adjustable ski pole basket  60  can be adhered to the ski pole  62  by an adhesive. 
     In another embodiment, the invention is a method of converting a basket for groomed conditions to a basket for powder conditions. The method includes rotating a petal  66  configured to rotate about a pivot point P on a central stationary member  70  from a compact position to an expanded position. The petal  66  is stopped at the expanded position. 
     The advantages of the present invention include, without limitation, that it is instantly adjustable to changing snow conditions. It is easy to adjust the basket because of the unique basket design and mechanism which allows for adjustment while the skier is in motion. Further, the basket can be expanded from minimum radius to maximum radius instantaneously and simultaneously as to both right and left ski poles. 
     In a broad embodiment, the present invention relates to an adjustable ski pole basket with an internal mechanism that provides instant expansion of the basket radius, and very quick retraction of the basket radius. The design of the invention allows the device to be integrated into a standard ski pole design. 
     While the foregoing written description of the invention enables one of ordinary skill in the art to make and use what is considered presently to be the best mode thereof, those of ordinary skill will understand and appreciate the existence of variations, combinations, and equivalents of the specific embodiment, method, and examples herein. The invention should therefore not be limited by the above described embodiment, method, and examples, but by all embodiments and methods within the scope and spirit of the invention as claimed.

Technology Classification (CPC): 0