A tracked vehicle includes a track assembly with a bogie assembly for riding on snow, mud, sand, etc. The track assembly includes a continuous track movably disposed about a drive wheel and a bogie wheel disposed rearward of the drive wheel. The drive wheel and bogie wheel are pivotally coupled to a
A tracked vehicle includes a track assembly with a bogie assembly for riding on snow, mud, sand, etc. The track assembly includes a continuous track movably disposed about a drive wheel and a bogie wheel disposed rearward of the drive wheel. The drive wheel and bogie wheel are pivotally coupled to a rear fork. The rear fork is pivotally coupled to a frame of the tracked vehicle. A bias member biases the drive wheel and the bogie wheel towards the ground.
대표청구항▼
What is claimed is: 1. A snow bike apparatus, comprising: a) a frame having a seat; b) a front steering post and a handle bar, attached to one another and pivotally coupled to the frame; c) a drive assembly, coupled to the frame, including: i) a gear, rotatably coupled to the frame; and ii) a drive
What is claimed is: 1. A snow bike apparatus, comprising: a) a frame having a seat; b) a front steering post and a handle bar, attached to one another and pivotally coupled to the frame; c) a drive assembly, coupled to the frame, including: i) a gear, rotatably coupled to the frame; and ii) a drive chain, movably disposed around the gear; d) a rear fork, pivotally coupled to the frame, having a pair of spaced apart members pivoted at a front or proximal end to the frame extending upward to a biasing attachment and then rearward and downward to a drive wheel attachment and then rearward to a bogie wheel attachment; e) a drive wheel, rotatably attachable to the rear fork, and operatively attachable to the drive chain; e) a bogie wheel, located rearward of, and spaced apart from, the drive wheel and rotatably coupled to the rear fork; f) a continuous track, movably disposed around the drive and bogie wheels; and h) a bias member, operatively coupled between the frame and the rear fork, configured to bias the drive wheel and bogie wheel towards the ground. 2. An apparatus in accordance with claim 1, wherein the spaced apart members of the rear fork have a smooth curvilinear profile between the front and back ends to reduce stress concentration points in the rear fork and to minimize transferring forces to the frame. 3. An apparatus in accordance with claim 1, further comprising: a tensioning member, coupled to the distal or back end of the rear fork, to bias the bogie wheel to the spaced apart position with respect to the drive wheel to keep tension on the continuous track between the bogie wheel and the drive wheel. 4. An apparatus in accordance with claim 3, wherein the spaced apart members are substantially horizontal from a predetermined rearward location to the rear or distal end to restrict any vertical forces on the bogie wheel from delivering a horizontal force component to the tensioning member. 5. An apparatus in accordance with claim 1, wherein the drive wheel and bogie wheel are pivotally and fixedly attached to the rear fork to allow the drive wheel and bogie wheel to rotate without displacing relative to one another. 6. An apparatus in accordance with claim 1, further comprising: a) a ski support, pivotally attached to the front steering post; b) a ski shock absorber, pivotally attached between the front steering post and ski support, configured to absorb applied loads from the ski support and minimize the transfer of forces between the ski support and the front steering post; and c) a ski, pivotally attached to the ski support. 7. An apparatus in accordance with claim 6, wherein the front steering post, the ski support, and the ski shock absorber define a three bar linkage that positions the ski shock absorber to absorb loading from the ski support and minimize the transference of loads from the ski support to the front steering post. 8. An apparatus in accordance with claim 1, further comprising a motor associated with the gear to rotate the gear and drive the drive chain. 9. An apparatus in accordance with claim 1, further comprising pedals associated with the gear to rotate the gear and drive the drive chain. 10. An apparatus in accordance with claim 1, wherein the continuous track includes a plurality of tread segments pivotally linked with one another to form a continuous flexible track disposed about the drive and bogie wheels. 11. An apparatus in accordance with claim 10, wherein each of the plurality of tread segments has an aperture sized and shaped to fit onto one of a plurality of protrusions disposed on the drive wheel and configured to engage the drive wheel so that when the drive wheel rotates the continuous track rotates. 12. An apparatus in accordance with claim 11, wherein the plurality of apertures and the plurality of protrusions are sized and shaped to expel snow and ice from the continuous track as the protrusions engage the apertures. 13. An apparatus in accordance with claim 1, wherein the rear fork is pivotally attached to the frame at or substantially at the gear of the drive assembly.
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