US 11,884,372 B2
Floatation device
Tiffany An-Ting Chiu, San Francisco, CA (US)
Filed by Otteroo Corporation, San Francisco, CA (US)
Filed on Mar. 25, 2022, as Appl. No. 17/704,598.
Application 17/704,598 is a continuation of application No. 16/859,149, filed on Apr. 27, 2020, granted, now 11,286,024.
Application 16/859,149 is a continuation of application No. 15/806,250, filed on Nov. 7, 2017, granted, now 10,633,065, issued on Apr. 28, 2020.
Claims priority of provisional application 62/418,682, filed on Nov. 7, 2016.
Prior Publication US 2023/0044587 A1, Feb. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B63C 9/15 (2006.01); A63B 31/00 (2006.01); A63B 71/00 (2006.01)
CPC B63C 9/155 (2013.01) [A63B 31/00 (2013.01); A63B 71/0054 (2013.01); A63B 2208/029 (2013.01); A63B 2208/0233 (2013.01); A63B 2208/12 (2013.01); A63B 2209/00 (2013.01); A63B 2209/10 (2013.01); A63B 2210/50 (2013.01); A63B 2225/09 (2013.01); A63B 2225/605 (2013.01); A63B 2225/62 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A floatation device, comprising:
an inflatable ring that includes:
an outer air chamber;
an inner air chamber, wherein the outer air chamber and the inner air chamber are inflated using a single air valve; and
a cut through the outer air chamber and the inner air chamber of the inflatable ring that forms opposing ends of the inflatable ring.