US 12,478,857 B2
Multi-material skateboard deck
Justin A. Paselk, Phoenix, AZ (US); Jordan D. Shoenhair, Scottsdale, AZ (US); John A. Solheim, Phoenix, AZ (US); and Dylan R. Cappello, Charlotte, NC (US)
Assigned to Karsten Manufacturing Corporation, Phoenix, AZ (US)
Filed by KARSTEN MANUFACTURING CORPORATION, Phoenix, AZ (US)
Filed on Nov. 22, 2022, as Appl. No. 18/058,207.
Application 18/058,207 is a continuation in part of application No. 17/362,784, filed on Jun. 29, 2021, granted, now 11,684,842.
Claims priority of provisional application 63/380,028, filed on Oct. 18, 2022.
Claims priority of provisional application 63/264,505, filed on Nov. 23, 2021.
Claims priority of provisional application 63/201,491, filed on Apr. 30, 2021.
Claims priority of provisional application 63/045,582, filed on Jun. 29, 2020.
Prior Publication US 2023/0090633 A1, Mar. 23, 2023
Int. Cl. A63C 17/01 (2006.01); B32B 3/04 (2006.01); B32B 5/02 (2006.01); B32B 21/04 (2006.01); B32B 21/10 (2006.01)
CPC A63C 17/017 (2013.01) [B32B 3/04 (2013.01); B32B 5/02 (2013.01); B32B 21/042 (2013.01); B32B 21/10 (2013.01); B32B 2250/05 (2013.01); B32B 2255/08 (2013.01); B32B 2255/26 (2013.01); B32B 2260/021 (2013.01); B32B 2260/046 (2013.01); B32B 2307/732 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A skateboard comprising:
a skateboard deck comprising
a plurality of resilient layers;
wherein the plurality of resilient layers is no more than four layers;
wherein the plurality of resilient layers comprises a first internal layer, a second internal layer, a third internal layer, and a fourth internal layer;
a plurality of stiffening layers;
wherein the plurality of stiffening layers comprises a first stiffening layer and a second stiffening layer;
wherein: the first stiffening layer and second stiffening layer comprise a fiber-reinforced material;
a top outer surface and a bottom outer surface;
wherein the first stiffening layer forms the top outer surface and the second stiffening layer forms the bottom outer surface;
wherein the plurality of resilient layers and the plurality of stiffening layers are encased within a resin matrix;
a truck comprising:
a hanger comprising a first and a second end spaced from the first end and a longitudinal axis of the truck extending from the first end to the second end;
a wheel assembly located near one of the first end and the second end of the hanger and coupled to the hanger by a central axle, the wheel assembly comprising:
a central wheel and a level arm each coupled to the central axle;
wherein the level arm is configured to rotate about the central axle and comprises a front aperture, a middle aperture, and a rear aperture;
a front axle received by the front aperture of the level arm;
a rear axle received by the rear aperture of the level arm;
a plurality of auxiliary wheels comprising:
a leading wheel affixed to the front axle;
a trailing wheel affixed to the rear axle;
an attack angle defined between a first reference line tangent to a forwardmost and outermost point of the leading wheel and a forwardmost point and an outermost point of the central wheel and a second reference line perpendicular to the longitudinal axis;
wherein the wheel assembly further comprises a spring mechanism configured to limit rotation of the level arm about the central axle;
wherein the spring mechanism comprises a spring insert received within a spring recess of the level arm;
wherein the spring mechanism comprises a substantially flat geometry that corresponds to a shape of the spring recess; and
wherein a lateral distance measured parallel to the longitudinal axis of the truck between the central wheel and the leading wheel is approximately between 1.5 inches and 2.0 inches.