Suspension skateboard truck
View Patent ↗A shock absorbing mechanism for a suspension skateboard truck and skateboard is disclosed. A suspension skateboard truck includes a hangar. The hangar has opposing axle sleeves that extend to opposite distal ends along a lateral axis defined by an axle channel formed by each axle sleeve. The distal end of each axle sleeve includes a cavity that has a width greater than a width of the axle channel. The apparatus further includes an axle extending out from the axle channel and cavity of the distal end of each axle sleeve, and a shock absorbing mechanism occupying each cavity at least partially around the axle.
1. An apparatus for a suspension skateboard truck, the apparatus comprising:
a hangar having opposing axle sleeves that extend to opposite distal ends along a lateral axis defined by an axle channel formed by each axle sleeve, the distal end of each axle sleeve including a cavity that has a width greater than a width of the axle channel, the cavity comprising a recess provided into an outer face of the distal end of each axle sleeve, the recess being radially symmetric about the lateral axis, and the outer face defining a plane that is transverse to the lateral axis;
an axle extending out from the axle channel and cavity of the distal end of each axle sleeve; and
a shock absorbing mechanism occupying each cavity at least partially around the axle.
2. The apparatus of claim 1 , wherein the recess has a truncated cone shape, and the shock absorbing mechanism includes a shock absorbing material formed in the truncated cone shape.
3. The apparatus of claim 1 , wherein the shock absorbing mechanism includes a shock absorbing member formed of at least one shock absorbing material.
4. The apparatus of claim 3 , wherein the at least one shock absorbing material includes polyurethane.
5. The apparatus of claim 1 , wherein the shock absorbing mechanism includes a polyurethane bushing having a size and shape that corresponds with the size and shape of cavity.
6. A suspension skateboard truck comprising:
a base having a plurality of mounting holes, a pivot cup, and a mounting seat that includes a kingpin receiving hole and bottom bushing seat;
a bottom bushing provided on the bottom bushing seat;
a hangar having a pivot stem pivotally coupled with the pivot cup, a bushing ring resting on the first bushing, and opposing axle sleeves that extend to opposite distal ends along a lateral axis defined by an axle channel formed by each axle sleeve, the distal end of each axle sleeve including a cavity that has a width greater than a width of the axle channel;
a top bushing provided on the top bushing seat;
a kingpin threaded through the top bushing, the bushing ring, the bottom bushing, and coupled to the kingpin receiving hole;
an axle extending out from the axle channel and cavity of the distal end of each axle sleeve; and
a shock absorbing mechanism occupying each cavity at least partially around the axle.
7. The apparatus of claim 6 , wherein the cavity comprises a recess provided into an outer face of the distal end of each axle sleeve, the outer face defining a plane that is transverse to the lateral axis.
8. The apparatus of claim 7 , wherein the recess has a truncated cone shape, and the shock absorbing mechanism includes a shock absorbing material formed in the truncated cone shape.
9. The apparatus of claim 7 , wherein the recess is radially symmetric about the lateral axis.
10. The apparatus of claim 6 , wherein the shock absorbing mechanism includes a shock absorbing member formed of at least one shock absorbing material.
11. The apparatus of claim 10 , wherein the at least one shock absorbing material includes polyurethane.
12. The apparatus of claim 6 , wherein the shock absorbing mechanism includes a polyurethane bushing having a size and shape that corresponds with the size and shape of cavity.
13. A skateboard comprising:
a planar board having a top side and a bottom side;
a pair of suspension skateboard trucks mounted to the bottom side of the planar board, each suspension skateboard truck comprising:
a base having a plurality of mounting holes, a pivot cup, and a mounting seat that includes a kingpin receiving hole and bottom bushing seat;
a bottom bushing provided on the bottom bushing seat;
a hangar having a pivot stem pivotally coupled with the pivot cup, a bushing ring resting on the first bushing, and opposing axle sleeves that extend to opposite distal ends along a lateral axis defined by an axle channel formed by each axle sleeve, the distal end of each axle sleeve including a cavity that has a width greater than a width of the axle channel;
a top bushing provided on the top bushing seat;
a kingpin threaded through the top bushing, the bushing ring, the bottom bushing, and coupled to the kingpin receiving hole;
an axle extending out from the axle channel and cavity of the distal end of each axle sleeve; and
a shock absorbing mechanism occupying each cavity at least partially around the axle; and
four wheels, each wheel being mounted on each axle that extends out from the axle channel.
14. The skateboard of claim 13 , wherein the cavity comprises a recess provided into an outer face of the distal end of each axle sleeve, the outer face defining a plane that is transverse to the lateral axis.
15. The apparatus of claim 14 , wherein the recess has a truncated cone shape, and the shock absorbing mechanism includes a shock absorbing material formed in the truncated cone shape.
16. The apparatus of claim 14 , wherein the recess is radially symmetric about the lateral axis.
17. The apparatus of claim 13 , wherein the shock absorbing mechanism includes a shock absorbing member formed of at least one shock absorbing material.
18. The apparatus of claim 17 , wherein the at least one shock absorbing material includes polyurethane.
19. The apparatus of claim 13 , wherein the shock absorbing mechanism includes a polyurethane bushing having a size and shape that corresponds with the size and shape of cavity.
20. The apparatus of claim 17 , wherein the shock absorbing mechanism includes two shock absorbing materials.