US 12,239,595 B2
Differential air pressure systems
Eric R. Kuehne, Los Gatos, CA (US); Mark A. Shughart, Palo Alto, CA (US); Sean Tremaine Whalen, Mountain View, CA (US); Douglas Frank Schwandt, Palo Alto, CA (US); and Robert Tremaine Whalen, Los Altos, CA (US)
Assigned to AlterG, Inc., Fremont, CA (US)
Filed by AlterG, Inc., Fremont, CA (US)
Filed on Apr. 4, 2023, as Appl. No. 18/295,796.
Application 18/295,796 is a continuation of application No. 16/997,865, filed on Aug. 19, 2020, abandoned.
Application 16/997,865 is a continuation of application No. 15/588,549, filed on May 5, 2017, abandoned.
Application 15/588,549 is a continuation of application No. 13/898,246, filed on May 20, 2013, granted, now 9,642,764, issued on May 9, 2017.
Application 13/898,246 is a continuation of application No. 12/778,747, filed on May 12, 2010, granted, now 8,464,716, issued on Jun. 18, 2013.
Claims priority of provisional application 61/178,901, filed on May 15, 2009.
Prior Publication US 2023/0240928 A1, Aug. 3, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61H 1/00 (2006.01); A63B 21/00 (2006.01); A63B 21/068 (2006.01); A63B 22/02 (2006.01); A63B 22/00 (2006.01); A63B 22/06 (2006.01); A63B 22/18 (2006.01); A63B 71/06 (2006.01)
CPC A61H 1/00 (2013.01) [A63B 21/00181 (2013.01); A63B 21/068 (2013.01); A63B 22/02 (2013.01); A63B 22/001 (2013.01); A63B 22/0012 (2013.01); A63B 22/0023 (2013.01); A63B 22/0056 (2013.01); A63B 22/0076 (2013.01); A63B 22/0605 (2013.01); A63B 22/0664 (2013.01); A63B 22/18 (2013.01); A63B 71/0622 (2013.01); A63B 2071/0655 (2013.01); A63B 2208/053 (2013.01); A63B 2209/08 (2013.01); A63B 2209/10 (2013.01); A63B 2220/56 (2013.01); A63B 2225/093 (2013.01); A63B 2230/01 (2013.01); A63B 2230/06 (2013.01); Y10T 137/0396 (2015.04)] 9 Claims
OG exemplary drawing
 
1. A differential air pressure system, comprising:
a positive pressure chamber having a sealing interface to form a pressure seal about a portion of a user;
a treadmill positioned relative to the positive pressure chamber wherein a portion of a belt of the treadmill is in position below the sealing interface which allows a user coupled to the sealing interface to interact with the treadmill belt while experiencing an unweighting effect from operation of the positive pressure chamber;
a height adjustment assembly attached to a portion of the positive pressure chamber wherein movement of the height adjustment assembly adjusts the spacing between the sealing interface and the treadmill belt to accommodate the user; and
a control panel for initiating and adjusting the pressure within the differential air pressure system.