US 12,239,918 B2
Accessible swing
Bryant A. Jones, Medicine Lake, MN (US); Darryl T. Wrolson, Minnetrista, MN (US); Matthew A. Tschann, Watertown, MN (US); Thomas L. Keller, Delano, MN (US); and Kent D. Wuchterl, Forest Lake, MN (US)
Assigned to Landscape Structures Inc., Delano, MN (US)
Filed by Landscape Structures Inc., Delano, MN (US)
Filed on Feb. 16, 2024, as Appl. No. 18/443,592.
Application 18/443,592 is a continuation of application No. 17/445,490, filed on Aug. 19, 2021, granted, now 11,938,411.
Claims priority of provisional application 63/135,727, filed on Jan. 10, 2021.
Claims priority of provisional application 63/074,410, filed on Sep. 3, 2020.
Prior Publication US 2024/0252934 A1, Aug. 1, 2024
Int. Cl. A63G 9/02 (2006.01); A61G 5/10 (2006.01); A63G 9/16 (2006.01); A63G 9/22 (2006.01)
CPC A63G 9/02 (2013.01) [A61G 5/104 (2013.01); A63G 9/16 (2013.01); A63G 9/22 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A playground device, comprising:
a platform;
an acceleration assembly operatively coupled to the platform, the acceleration assembly including:
a plurality of linkages pivotally connected to each other, and wherein at least one of the linkages is also pivotally connected to the platform;
a coupler attached to the platform; and
a force storing component that forms at least part of a connection between the coupler and the plurality of linkages, wherein the force storing component stores potential energy when the platform is in a resting position and releases the stored potential energy to assist in initiating motion of the platform.