Skibobs are disclosed having features for conveying the skibob with rider on a moving chairlift while the rider remains mounted on the seat of the skibob. The frame and suspension are configured for elevating the underside of the skibob seat above the level of the chairlift bench during loading, so
Skibobs are disclosed having features for conveying the skibob with rider on a moving chairlift while the rider remains mounted on the seat of the skibob. The frame and suspension are configured for elevating the underside of the skibob seat above the level of the chairlift bench during loading, so that the chairlift bench, while moving forward from behind the rider, can pick up the skibob, rider and all, and carry the mounted rider up the ski slope without falling. As the undercarriage of the skibob is lifted off the snow, the rider is deposited on the chairlift bench so that the seat of the skibob is secured in place by the weight of the rider on the seat. During offloading, the skibob is nonetheless readily disengaged from the chairlift bench with an active boost from the suspension and optional spring-loaded seat as the undercarriage contacts the offloading platform, permitting the rider to ski away from the chairlift without dismounting the skibob, thus improving ease of use for riders with limits in physical capacity. These and other features of the invention are a benefit to disabled persons in gaining access to the ski slopes.
대표청구항▼
1. A skibob for riding a benchrest of a moving chairlift while the rider is seated on the seat of the skibob, which comprises: a) a frame having an anterior aspect for attaching a front ski by a front ski mounting member, a posterior aspect for attaching a rear ski by a rear ski mounting member;b) a
1. A skibob for riding a benchrest of a moving chairlift while the rider is seated on the seat of the skibob, which comprises: a) a frame having an anterior aspect for attaching a front ski by a front ski mounting member, a posterior aspect for attaching a rear ski by a rear ski mounting member;b) a seat member rearwardly cantilevered from a supraposterior aspect of said frame, wherein said seat member comprises a rearwardly cantilevered cantilever arm and a seat posteriorly disposed thereon for seating the rider;c) wherein said cantilever arm is provided with a generally planar underside surface defining a contiguous benchrest receiving space under said underside surface for receiving said moving benchrest of said chairlift supportingly thereinunder;d) further wherein said rear ski mounting member comprises a swingarm descendingly angled posteriorly from said frame, said swingarm pivotingly connecting at a first end to an axle (P) of the frame and at a second end to said rear ski; ande) a means for assistedly dismounting from said benchrest of said moving chairlift while remaining astride said skibob; wherein said means for assistedly dismounting from said benchrest comprises a rear suspension having a mechanical linkage and a shock absorber, said shock absorber pivotingly connecting at a first nose to said mechanical linkage and at a second nose to said frame; said mechanical linkage operating with said swingarm by compressingly storing energy in said shock absorber when said swingarm is upthrustingly elevated upward in relation to said frame by contact with an ascending foreslope of an offloading platform of the chairlift and decompressingly releasing energy from said shock absorber by a reciprocating downward rotation of said swingarm as said seat member slides off of said benchrest. 2. The skibob of claim 1, wherein a) said supraposterior aspect of said frame for attaching said seat member comprises a supraposterior fulcrum point configured for pivoting said rearwardly cantilevered cantilever arm attached thereto over a range of travel between a first position wherein said seat is raised in relation to said frame and a second position wherein said seat is lowered in relation to said frame;b) said seat member further comprises a lever arm forwardly projecting from said cantilever arm at said fulcrum point, such that said lever arm and said cantilever arm pivot in unison on said fulcrum point; andc) said means for assistedly dismounting from said benchrest of said chairlift further comprises a spring means operatively biasing said lever arm in relation to said frame, wherein said spring means is configured for assistedly raising the seat with rider to an elevated position when operated upon by the counter-rotation of the frame at the fulcrum in relation to the seat when the rear ski up-thrustingly is elevated by contact with an ascending foreslope of an offloading platform of the chairlift, said spring means operating in concert with said mechanical linkage to transfer energy from said rear ski to said pivotable seat member. 3. The skibob of claim 2, wherein said spring means is configured so as to be adjustable for the weight of the rider and further wherein said frame comprises one or more restraining bumpers or chocks for controlling the range of travel of the seat member from the first position to the second position. 4. The skibob of claim 1, wherein a) said supraposterior aspect of said frame for attaching said seat member comprises a supraposterior fulcrum point configured for pivoting said rearwardly cantilevered cantilever arm attached thereto over a range of travel between a first position wherein said seat is raised in relation to said frame and a second position wherein said seat is lowered in relation to said frame; andb) said means for assistedly dismounting from said benchrest of said chairlift further comprises a torsion spring means operatively mounted between said frame and said cantilever arm at said fulcrum, and said spring means is configured for assistedly raising the seat with rider to an elevated position when operated upon by the counter-rotation of the frame at the fulcrum in relation to the seat when the rear ski up-thrustingly is elevated by contact with an ascending foreslope of an offloading platform of the chairlift, said spring operating in concert with said mechanical linkage to transfer energy from said rear ski to said pivotable seat member. 5. The skibob of claim 1, wherein said benchrest receiving space is proportionately dimensioned so as to supportingly fit said benchrest of said chairlift under said rearwardly cantilevered cantilever arm of the seat member, and wherein said seat has a upper surface area proportionately dimensioned to accommodate the surface area of the human buttocks. 6. The skibob of claim 1, wherein said generally planar underside surface of said cantilever arm is defined by rail segments of said seat member, said rail segments for slidingly dismounting off from said benchrest, and optionally wherein said seat height is adjustable. 7. The skibob of claim 1, wherein said mechanical linkage is a Chebyshev linkage having a low-profile, crossed-trapezoidal, four-bar linkage mechanism configured to convert travel of said swingarm as it reciprocates over a range of arc into compression and decompression of said shock absorber. 8. The skibob of claim 7, wherein said Chebyshev linkage is configured with an input link formed by said swingarm, a follower link, a ground link, and a coupler link, wherein said coupler link is in tension between said follower link and said input link, and further wherein said follower link is modified with a wing arm extending as a lever from said linkage mechanism to an excentric pivot, said excentric pivot with coupling pin for attaching said wing arm to said first nose of said shock absorber with coupler link in tension, and wherein said shock absorber is a progressive shock absorber. 9. The skibob of claim 7, wherein said shock absorber is a progressive shock absorber, and optionally wherein said progressive shock absorber is adjustable. 10. The skibob of claim 1, wherein said front ski mounting member comprises a front suspension, and wherein said front ski mounting member and front ski further comprises a dampening means for controlling the pitch attitude of said front ski. 11. The skibob of claim 1, wherein said rear ski mounting member and rear ski comprises a dampening means for controlling the pitch attitude of said rear ski.
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이 특허에 인용된 특허 (12)
Capozzi Matthew V. ; Connolly Nathan T. ; Twitchell Colin S., Accessible seating assembly.
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