US 11,857,830 B2
Physical training apparatus
Gerrit Jan Stegeman, Laren (NL)
Assigned to Kynett Holding B.V., Lochem (NL)
Appl. No. 17/293,512
Filed by Kynett Holding B.V., Lochem (NL)
PCT Filed Nov. 11, 2019, PCT No. PCT/NL2019/050735
§ 371(c)(1), (2) Date May 13, 2021,
PCT Pub. No. WO2020/101483, PCT Pub. Date May 22, 2020.
Claims priority of application No. 2022002 (NL), filed on Nov. 15, 2018.
Prior Publication US 2021/0402246 A1, Dec. 30, 2021
Int. Cl. A63B 21/22 (2006.01); A63B 21/00 (2006.01); A63B 21/16 (2006.01)
CPC A63B 21/227 (2013.01) [A63B 21/00061 (2013.01); A63B 21/153 (2013.01); A63B 21/16 (2013.01); A63B 21/4035 (2015.10)] 18 Claims
OG exemplary drawing
 
1. A physical training apparatus comprising:
a housing;
a flywheel mechanism accommodated in the housing, said flywheel mechanism including a spindle, at least one flywheel mounted on the spindle and bearings to support the spindle in the housing;
a windable pull element which is arranged to be wound up the spindle and unwound from the spindle;
a handgrip attached to the pull element;
wherein the spindle includes a spindle end portion, wherein the flywheel is exchangeably mounted on the spindle end portion against a stop located on the spindle, and wherein a fastening knob is releasably coupled to the spindle end portion and adapted to engage the flywheel and force the flywheel against the stop located on the spindle;
wherein the fastening knob includes an associated spring element which resiliently forces the flywheel against the stop.