US 12,330,755 B2
Surfboard and spring assembly
Stuart Douglas Campbell, Queensland (AU)
Appl. No. 17/783,784
Filed by Stuart Douglas Campbell, Queensland (AU)
PCT Filed Dec. 4, 2020, PCT No. PCT/AU2020/051331
§ 371(c)(1), (2) Date Jun. 9, 2022,
PCT Pub. No. WO2021/119726, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 2019101609 (AU), filed on Dec. 16, 2019; application No. 2019283772 (AU), filed on Dec. 16, 2019; and application No. 2020202137 (AU), filed on Mar. 25, 2020.
Prior Publication US 2023/0012159 A1, Jan. 12, 2023
Int. Cl. B63B 32/50 (2020.01); B32B 3/02 (2006.01); B32B 3/04 (2006.01); B32B 3/30 (2006.01); B32B 5/02 (2006.01); B32B 5/18 (2006.01); B32B 5/24 (2006.01); B32B 5/26 (2006.01); B63B 32/40 (2020.01); B63B 32/57 (2020.01); B63B 32/59 (2020.01)
CPC B63B 32/50 (2020.02) [B32B 3/02 (2013.01); B32B 3/04 (2013.01); B32B 3/30 (2013.01); B32B 5/02 (2013.01); B32B 5/18 (2013.01); B32B 5/245 (2013.01); B63B 32/40 (2020.02); B63B 32/57 (2020.02); B63B 32/59 (2020.02); B32B 5/26 (2013.01); B32B 2250/40 (2013.01); B32B 2250/44 (2013.01); B32B 2260/021 (2013.01); B32B 2260/046 (2013.01); B32B 2262/101 (2013.01); B32B 2262/106 (2013.01); B32B 2266/0228 (2013.01); B32B 2266/0278 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A surfboard having
a core;
a first elongate spring member located adjacent an upper side of the core; and
a second elongate spring member located adjacent a lower side of the core;
wherein the first elongate spring member extends substantially from a nose portion of the surfboard to a tail portion of the surfboard, and
wherein each elongate spring member includes a plurality of layers of resilient material, and wherein a number of layers of resilient material is greater in a central portion of the elongate spring member compared to a portion of the elongate spring member towards the nose of the surfboard and compared to a portion of the elongate spring member towards the tail of the surfboard.