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A truck assembly comprises a baseplate including a pivot arm hole, a first kingpin hole and a spring holder. A wheel axle is couplable to a wheel on each end of the wheel axle. A pivot arm is inserted into the pivot arm hole of the baseplate. An axle housing has a first end, a second end and a secon

A truck assembly comprises a baseplate including a pivot arm hole, a first kingpin hole and a spring holder. A wheel axle is couplable to a wheel on each end of the wheel axle. A pivot arm is inserted into the pivot arm hole of the baseplate. An axle housing has a first end, a second end and a second kingpin hole. The first end includes the wheel axle and the second kingpin hole, and the second end includes the pivot arm. A swingable kingpin includes a first portion and a second portion. The first portion swings relative to the second portion. A spring member is provided substantially parallel to the kingpin and is coupled to the spring holder of the baseplate and the first end of the axle housing.

대표청구항 ▼

1. A truck assembly, comprising: a baseplate including a pivot arm hole provided at a first end of the baseplate, a first kingpin hole provided at a second end of the baseplate and a coil spring holder provided at the second end of the baseplate;a wheel axle couplable to a wheel on each end of the w

1. A truck assembly, comprising: a baseplate including a pivot arm hole provided at a first end of the baseplate, a first kingpin hole provided at a second end of the baseplate and a coil spring holder provided at the second end of the baseplate;a wheel axle couplable to a wheel on each end of the wheel axle;a pivot arm inserted into the pivot arm hole of the baseplate;an axle housing having a first housing end, a second housing end and a second kingpin hole;the first housing end including the wheel axle and the second kingpin hole, and the second housing end including the pivot arm;a swingable kingpin including a first substantially cylindrical portion and a second substantially cylindrical portion, wherein the first portion swings relative to the second portion by smooth toothless contact between the first portion and the second portion such that the swinging pivots the pivot arm about an axis passing through the pivot arm hole and the first kingpin hole; anda coil spring member provided substantially parallel to the swingable kingpin and coupled to and in direct contact with the coil spring holder of the baseplate and the first housing end of the axle housing. 2. The truck assembly according to claim 1, wherein the swingable kingpin includes a swing bolt and the first portion is a baseplate end and the second portion is an axle end, wherein the baseplate end is coupled to the first kingpin hole of the baseplate, the axle end is coupled to the second kingpin hole of the axle housing, and the swing bolt is coupled to the baseplate end and the axle end. 3. The truck assembly according to claim 2, wherein the baseplate end is concave and the axle end is convex. 4. The truck assembly according to claim 2, wherein the swing bolt is perpendicular to the wheel axle. 5. The truck assembly according to claim 2, wherein the baseplate end is at least the height of the axle end. 6. The truck assembly according to claim 2, wherein the axle end of the swingable kingpin locks into the second kingpin hole of the axle housing only through a first side of the axle housing so as to not protrude through the entire axle housing. 7. The truck assembly according to claim 2, wherein a tension of the kingpin is adjusted by adjusting a nut corresponding to the swing bolt. 8. The truck assembly according to claim 1, wherein the kingpin swings along a predetermined range to prevent wheel bite. 9. The truck assembly according to claim 1, wherein the coil spring member limits the swing of the swingable kingpin. 10. The truck assembly according to claim 1, wherein the kingpin is provided within an interior space of the coil spring member. 11. A skateboard, comprising: a deck;a truck assembly comprising:a baseplate including a pivot arm hole provided at a first end of the baseplate, a first kingpin hole provided at a second end of the baseplate and a coil spring holder provided at the second end of the baseplate;a wheel axle couplable to a wheel on each end of the wheel axle;a pivot arm inserted into the pivot arm hole of the baseplate;an axle housing having a first housing end, a second housing end and a second kingpin hole;the first housing end including the wheel axle and the second kingpin hole, and the second housing end including the pivot arm;a swingable kingpin including a first substantially cylindrical portion and a second substantially cylindrical portion, wherein the first portion swings relative to the second portion by smooth toothless contact between the first portion and the second portion such that the swinging pivots the pivot arm about an axis passing through the pivot arm hole and the first kingpin hole; anda coil spring member provided substantially parallel to the swingable kingpin and coupled to and in direct contact with the coil spring holder of the baseplate and the first housing end of the axle housing. 12. The skateboard according to claim 11, wherein the swingable kingpin includes a swing bolt and the first portion is a baseplate end and the second portion is an axle end, wherein the baseplate end is coupled to the first kingpin hole of the baseplate, the axle end is coupled to the second kingpin hole of the axle housing, and the swing bolt is coupled to the baseplate end and the axle end. 13. The skateboard according to claim 12, wherein the baseplate end is concave and the axle end is convex. 14. The skateboard according to claim 12, wherein the swing bolt is perpendicular to the wheel axle. 15. The skateboard according to claim 12, wherein the baseplate end is at least the height of the axle end. 16. The skateboard according to claim 11, wherein the kingpin swings along a predetermined range to prevent wheel bite. 17. The skateboard according to claim 11, wherein the kingpin is provided within an interior space of the coil spring member. 18. A truck assembly, comprising: a baseplate including a pivot arm hole, a first kingpin hole and a coil spring holder;a wheel axle couplable to a wheel on each end of the wheel axle;a pivot arm inserted into the pivot arm hole of the baseplate;an axle housing having a first end, a second end and a second kingpin hole;the first end including the wheel axle and the second kingpin hole, and the second end including the pivot arm;a kingpin coupled to the first kingpin hole of the baseplate and to the second kingpin hole of the axle housing;a flexible member lined along the interior circumference and entire height of the second kingpin hole so as to cover the second kingpin hole from direct contact with the kingpin throughout the second kingpin hole;a coil spring member provided substantially parallel to the kingpin and coupled to the coil spring holder and in direct contact with the baseplate and the first end of the axle housing; anda nut provided at the axle housing to adjust a tension of the spring member, wherein the nut is in direct contact only with the flexible member such that the flexible member alone covers the second kingpin hole from direct contact with the nut at the first end of the axle housing. 19. The truck assembly according to claim 18, wherein the flexible member is selected from the group consisting of a wire mesh, another spring member, and a plurality of cables. 20. The truck assembly according to claim 18, wherein the kingpin and the nut moves freely within a predetermined range within the second kingpin hole.