초록 ▼

A skateboard truck with a single kingpin assembly mechanism with a compressible single bushing with a graduated coefficient of compressibility and built-in cam stops. The truck allows for superior rotation of the wheels due to the single kingpin assembly, which presents an improvement over the prior

A skateboard truck with a single kingpin assembly mechanism with a compressible single bushing with a graduated coefficient of compressibility and built-in cam stops. The truck allows for superior rotation of the wheels due to the single kingpin assembly, which presents an improvement over the prior king-pin and bolt, as there is less stress on the moving parts, the danger of wheel-bite is reduced, and a tighter steering angle can be maintained. The axle hanger is reversible to allow a user to change the height of the skateboard deck from the surface. Because it is made from fewer parts, the truck is simpler to construct, take apart and repair, and can be made less expensively than traditional trucks.

대표청구항 ▼

I claim: 1. A skateboard truck, comprising: a kingpin consisting of a head portion, a body portion, and a plurality of kingpin threads, a base consisting of a flat portion through which exist two or more attachment holes for attaching the base to the bottom of the deck of a skateboard and a base bu

I claim: 1. A skateboard truck, comprising: a kingpin consisting of a head portion, a body portion, and a plurality of kingpin threads, a base consisting of a flat portion through which exist two or more attachment holes for attaching the base to the bottom of the deck of a skateboard and a base bushing receptacle portion which has a roughly cylindrical cavity into which the bushing fits, a hole through which the kingpin fits, a bushing with a kingpin hole through the center of a diameter sufficient to allow the kingpin to pass, a hanger unit consisting of an axle with axle threads at both ends, a hanger body through which the axle fits, a hanger bushing receptacle of a size sufficient to allow the bushing to be inserted, a hole through which the kingpin fits, and a nut with threads which mate with the kingpin threads, such that by attaching the base to a skateboard, attaching two wheels to the axle, and threading the kingpin through, in order, the base, the bushing, the hanger, and the nut, the wheels can be attached to the skateboard with only one axis of contact, such that when a rider places weight on one side or the other of the skateboard, the wheels rotate about the kingpin without relying on a secondary member for support or as a pivot axis, where the base additionally comprises two or more cam stops and the hanger additionally comprises two or more cam stops, where each of the two or more cam stops on the base is opposite to one of the two or more cam stops on the hanger, and where when the base and hanger are removably attached to one another by the kingpin and the nut, with the bushing in between the base and the hanger, the cam stops of the base have a set gap between them and the cam stops of the hanger, where the two or more cam stops of the base extend beyond the two or more cam stops of the hanger such that a cam stop of the base engages an opposite cam stop of the hanger, thereby allowing the hanger a certain range of rotational motion before each base cam stop meet its opposite hanger cam stop and prevent further rotation of the hanger, which thereby limits the amount of movement of the wheels. 2. The skateboard truck of claim 1, where the kingpin is the sole connecting member between the base, the bushing, and the hanger, and the bushing is made from urethane. 3. The skateboard truck of claim 1, where the base additionally comprises four or more anti-rotational plugs arrayed around the bottom of the base bushing receptacle, the bushing has a graduated coefficient of compressibility, and the bushing additionally comprises four or more anti-rotational cavities arrayed around the bottom of the bushing and four or more anti-rotational cavities arrayed around the top of the bushing, and the hanger additionally comprises four or more anti-rotational plugs arrayed around the top of the hanger bushing receptacle, such that the base, bushing, and hanger cannot rotate around the other. 4. The skateboard truck of claim 1, where the base contains two cam stops and the hanger contains two cam stops. 5. The skateboard truck of claim 1, where the bushing is cylindrical in shape. 6. The skateboard truck of claim 1, where the hanger is reversible such that by reversing the hanger a user can change the distance between the wheels and the deck of the skateboard. 7. The skateboard truck of claim 1, where, the kingpin angle to the bottom of the deck of the skateboard is substantially 30 degrees to the vertical. 8. The skateboard truck of claim 1, where, the kingpin angle to the bottom of the deck of the skateboard is substantially 35 degrees to the vertical. 9. The skateboard truck of claim 1, where, the kingpin angle to the bottom of the deck of the skateboard is substantially 40 degrees to the vertical. 10. The skateboard truck of claim 1, where, the kingpin angle to the bottom of the deck of the skateboard is substantially 45 degrees to the vertical. 11. The skateboard truck of claim 1, where, the kingpin angle to the bottom of the deck of the skateboard is substantially 50 degrees to the vertical. 12. The skateboard truck of claim 1, where, the kingpin angle to the bottom of the deck of the skateboard is substantially 55 degrees to the vertical. 13. The skateboard truck of claim 1, where, the only member between the base and the hanger is the bushing and the only connecting device is the kingpin. 14. The skateboard truck of claim 1, where, the amount of pressure a rider needs to exert to make a turn can be adjusted by tightening the nut on the kingpin and adding or removing pressure from the bushing, without the use of any flanges or other devices other than the kingpin, the nut, and the bushing. 15. The skateboard truck of claim 1, where, upon receiving pressure from a rider putting pressure on one side or the other of the skateboard, the hanger rotates about the kingpin at the angle the kingpin is set to the bottom of the skateboard. 16. A skateboard truck, comprising: a kingpin consisting of a head portion, a body portion, and a plurality of kingpin threads, a base consisting of a flat portion through which exist two or more attachment holes for attaching the base to the bottom of the deck of a skateboard and a base bushing receptacle portion which has a roughly cylindrical cavity into which the bushing fits, a hole through which the kingpin fits, a bushing with a kingpin hole through the center of a diameter sufficient to allow the kingpin to pass, a hanger unit consisting of an axle with axle threads at both ends, a hanger body through which the axle fits, a hanger bushing receptacle of a size sufficient to allow the bushing to be inserted, a hole through which the kingpin fits, and a nut with threads which mate with the kingpin threads, such that by attaching the base to a skateboard, attaching two wheels to the axle, and threading the kingpin through, in order, the base, the bushing, the hanger, and the nut, the wheels can be attached to the skateboard with only one axis of contact, such that when a rider places weight on one side or the other of the skateboard, the wheels rotate about the kingpin without relying on a secondary member for support or as a pivot axis, and, where the hanger is reversible such that by reversing the hanger a user can change the distance between the wheels and the deck of the skateboard. 17. A skateboard truck, comprising: a kingpin consisting of a head portion, a body portion, and a plurality of kingpin threads, a base consisting of a flat portion through which exist two or more attachment holes for attaching the base to the bottom of the deck of a skateboard and a base bushing receptacle portion which has a roughly cylindrical cavity into which the bushing fits, a hole through which the kingpin fits, a bushing with a kingpin hole through the center of a diameter sufficient to allow the kingpin to pass, a hanger unit consisting of an axle with axle threads at both ends, a hanger body through which the axle fits, a hanger bushing receptacle of a size sufficient to allow the bushing to be inserted, a hole through which the kingpin fits, and a nut with threads which mate with the kingpin threads, such that by attaching the base to a skateboard, attaching two wheels to the axle, and threading the kingpin through, in order, the base, the bushing, the hanger, and the nut, the wheels can be attached to the skateboard with only one axis of contact, such that when a rider places weight on one side or the other of the skateboard, the wheels rotate about the kingpin without relying on a secondary member for support or as a pivot axis, where the base additionally comprises two or more cam stops and the hanger additionally comprises two or more cam stops, where each of the two or more cam stops on the base is opposite to one of the two or more cam stops on the hanger, and where when the base and hanger are removably attached to one another by the kingpin and the nut, with the bushing in between the base and the hanger, the cam stops of the base have a set gap between them and the cam stops of the hanger, where the two or more cam stops of the base extend beyond the two or more cam stops of the hanger such that a cam stop of the base engages an opposite cam stop of the hanger, thereby allowing the hanger a certain range of rotational motion before each base cam stop meet its opposite hanger cam stop and prevent further rotation of the hanger, which thereby limits the amount of movement of the wheels, and, where the hanger is reversible such that by reversing the hanger a user can change the distance between the wheels and the deck of the skateboard. 18. The skateboard truck of claim 17, where, the bushing has a graduated coefficient of compressibility. 19. The skateboard truck of claim 17, where, the kingpin angle to the bottom of the deck of the skateboard is between 30 and 55 degrees to the vertical.