US 12,404,883 B2
Controlling multiple eversion-based actuators
Eduardo Bueno Espinal, Almazora (ES)
Assigned to ELECTRONICS FOR IMAGING, INC., Londonderry, NH (US)
Filed by Electronics for Imaging, Inc., Londonderry, NH (US)
Filed on Feb. 9, 2024, as Appl. No. 18/437,511.
Application 18/437,511 is a continuation of application No. 18/158,071, filed on Jan. 23, 2023, granted, now 11,939,995.
Prior Publication US 2024/0247666 A1, Jul. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F15B 15/10 (2006.01)
CPC F15B 15/103 (2013.01) [F15B 2215/30 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An apparatus to control a plurality of eversion-based actuators comprising:
a pressurized chamber including an aperture to intake a fluid;
an eversion-based actuator in the plurality of eversion-based actuators including a reel of material expandable upon intaking the fluid; and
a passive retraction system exerting a retraction force on the reel of material causing the reel of material to shorten when the retraction force exceeds an expansionary force exerted by the fluid in the pressurized chamber;
wherein the passive retraction system includes a torsion spring or an angular spring.