Skateboard with safer turning

Abstract

A skateboard comprises a board, front and rear wheel bases respectively mounted to front and rear portions of an underside of the board, and front and rear axles respectively attached to the front and rear wheel bases. The front axle has a portion abutting against the front wheel base such that the front axle pivots toward a loading point when a load is applied to the loading point not locating on a central longitudinal axis of the skateboard. The rear axle has a portion abutting against the rear wheel base such that the rear axle pivots toward a loading point when a load is applied to the loading point not locating on the central longitudinal axis of the skateboard.

What is claimed is:  
     
         1 . A skateboard comprising: 
 a board including an underside having a front portion and a rear portion;    a front wheel base securely attached to the front portion of the underside of the board, the front wheel base comprising an underside having an abutting portion;    a front axle attached to the front wheel base, the front axle having a portion abutting against the abutting portion of the front wheel base such that the front axle pivots toward a loading point when a load is applied to the loading point not locating on a central longitudinal axis of the skateboard;    two front wheels rotatably attached to two ends of the front axle;    a rear wheel base securely attached to the rear portion of the underside of the board, the rear wheel base comprising an underside having an abutting portion;    a rear axle attached to the rear wheel base, the rear axle having a portion abutting against the abutting portion of the rear wheel base such that the rear axle pivots toward a loading point when a load is applied to the loading point not locating on the central longitudinal axis of the skateboard; and    two rear wheels rotatably attached to two ends of the rear axle.    
     
     
         2 . The skateboard as claimed in  claim 1 , wherein the underside of the front wheel base comprises a left portion and a right portion, the front axle having a left portion and a right portion, further comprising a first spring attached between the left portion of the front wheel base and the left portion of the front axle, and a second spring attached between the right portion of the front wheel base and the right portion of the front axle.  
     
     
         3 . The skateboard as claimed in  claim 1 , wherein the underside of the rear wheel base comprises a left portion and a right portion, the rear axle having a left portion and a right portion, further comprising a first spring attached between the left portion of the rear wheel base and the left portion of the rear axle, and a second spring attached between the right portion of the rear wheel base and the right portion of the rear axle.  
     
     
         4 . The skateboard as claimed in  claim 2 , wherein the underside of the rear wheel base comprises a left portion and a right portion, the rear axle having a left portion and a right portion, further comprising a third spring attached between the left portion of the rear wheel base and the left portion of the rear axle, and a fourth spring attached between the right portion of the rear wheel base and the right portion of the rear axle.  
     
     
         5 . The skateboard as claimed in  claim 4 , wherein the underside of the front wheel base comprises a receiving space, a side defining the receiving space comprising a first socket and a second socket, the first socket receiving an end of the first spring, the second socket receiving an end of the second spring.  
     
     
         6 . The skateboard as claimed in  claim 5 , wherein the front axle comprising a groove delimited by two sidewalls and a bottom wall, a first peg and a second peg being provided on a left portion and a right portion of the bottom wall defining the groove, further comprising: 
 a first upper sleeve mounted between an end of the first spring and an end wall defining the first socket;    a first lower sleeve mounted between another end of the first spring and the first peg;    a second upper sleeve mounted between an end of the second spring and an end wall defining the second socket; and    a second lower sleeve mounted between another end of the second spring and the second peg.    
     
     
         7 . The skateboard as claimed in  claim 6 , wherein the end wall defining the first socket comprises a peg and wherein the first upper sleeve comprises a receptacle in an end thereof for receiving the peg in the first socket.  
     
     
         8 . The skateboard as claimed in  claim 7 , wherein the first lower sleeve comprises a receptacle in an end thereof for receiving the first peg.  
     
     
         9 . The skateboard as claimed in  claim 6 , wherein the end wall defining the second socket comprises a peg and wherein the second upper sleeve comprises a receptacle in an end thereof for receiving the peg in the second socket.  
     
     
         10 . The skateboard as claimed in  claim 9 , wherein the second lower sleeve comprises a receptacle in an end thereof for receiving the second peg.  
     
     
         11 . The skateboard as claimed in  claim 7 , wherein the first socket extending along a first axis at an angle with a vertical axis, the second socket extending along a second axis at an angle with the vertical axis, the first axis and the second axis intersecting with each other at a point on the vertical axis.  
     
     
         12 . The skateboard as claimed in  claim 5 , wherein the rear axle comprising a groove delimited by two sidewalls and a bottom wall, a first peg and a second peg being provided on a left portion and a right portion of the bottom wall defining the groove, further comprising: 
 a first upper sleeve mounted between an end of the first spring and an end wall defining the first socket;    a first lower sleeve mounted between another end of the first spring and the first peg;    a second upper sleeve mounted between an end of the second spring and an end wall defining the second socket; and    a second lower sleeve mounted between another end of the second spring and the second peg.    
     
     
         13 . The skateboard as claimed in  claim 12 , wherein the end wall defining the first socket comprises a peg and wherein the first upper sleeve comprises a receptacle in an end thereof for receiving the peg in the first socket.  
     
     
         14 . The skateboard as claimed in  claim 13 , wherein the first lower sleeve comprises a receptacle in an end thereof for receiving the first peg.  
     
     
         15 . The skateboard as claimed in  claim 12 , wherein the end wall defining the second socket comprises a peg and wherein the second upper sleeve comprises a receptacle in an end thereof for receiving the peg in the second socket.  
     
     
         16 . The skateboard as claimed in  claim 15 , wherein the second lower sleeve comprises a receptacle in an end thereof for receiving the second peg.  
     
     
         17 . The skateboard as claimed in  claim 13 , wherein the first socket extending along a first axis at an angle with a vertical axis, the second socket extending along a second axis at an angle with the vertical axis, the first axis and the second axis intersecting with each other at a point on the vertical axis.  
     
     
         18 . A skateboard comprising: 
 a board including an underside having a front portion and a rear portion;    a front wheel base securely attached to the front portion of the underside of the board, the front wheel base including an underside having a left portion and a right portion;    a front axle attached to the underside of the front wheel base, the front axle having a left portion and a right portion;    a first spring attached between the left portion of the underside of the front wheel base and the left portion of the front axle;    a second spring attached between the right portion of the underside of the front wheel base and the right portion of the front axle;    two front wheels rotatably attached to two ends of the front axle;    a rear wheel base securely attached to the rear portion of the underside of the board, the rear wheel base comprising an underside having a left portion and a right portion;    a rear axle attached to the underside of the rear wheel base, the rear axle having a left portion and a right portion;    a third spring attached between the left portion of the underside of the rear wheel base and the left portion of the rear axle;    a fourth spring attached between the right portion of the underside of the rear wheel base and the right portion of the rear axle; and    two rear wheels rotatably attached to two ends of the rear axle.