US 11,944,895 B2
Dual axle skateboard and truck with outboard secondary wheels and methods
John R. Marusiak, Phoenix, AZ (US); John A. Solheim, Phoenix, AZ (US); and Eric V. Cole, Phoenix, AZ (US)
Assigned to Karsten Manufacturing Corporation, Phoenix, AZ (US)
Filed by KARSTEN MANUFACTURING CORPORATION, Phoenix, AZ (US)
Filed on Aug. 30, 2021, as Appl. No. 17/461,577.
Application 15/343,325 is a division of application No. 14/806,419, filed on Jul. 22, 2015, granted, now 9,492,731, issued on Nov. 15, 2016.
Application 17/461,577 is a continuation of application No. 16/747,397, filed on Jan. 20, 2020, granted, now 11,130,046.
Application 16/747,397 is a continuation of application No. 15/887,091, filed on Feb. 2, 2018, granted, now 10,561,927, issued on Feb. 18, 2020.
Application 15/887,091 is a continuation of application No. 15/343,325, filed on Nov. 4, 2016, granted, now 9,925,452, issued on Mar. 27, 2018.
Application 14/806,419 is a continuation in part of application No. 14/487,955, filed on Sep. 16, 2014, granted, now 9,138,633, issued on Sep. 22, 2015.
Prior Publication US 2021/0387077 A1, Dec. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A63C 17/00 (2006.01); A63C 17/01 (2006.01)
CPC A63C 17/012 (2013.01) [A63C 17/004 (2013.01); A63C 17/0093 (2013.01); A63C 17/014 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A truck for a skateboard, the truck comprising:
a mounting surface for attaching the truck to a body of the skateboard;
a primary axle;
two primary wheels rotatably mounted on the primary axle;
at least one secondary axle that is parallel to the primary axle; and
two secondary wheels rotatably mounted on the at least one secondary axle;
wherein:
the two primary wheels each have a primary wheel diameter;
the two secondary wheels each have a secondary wheel diameter; and
an axle spacing distance between the primary axle and the at least one secondary axle is less than a sum of the primary wheel diameter and the secondary wheel diameter divided by two.