US 11,675,183 B2
Dynamic security device
Daniel Brassard, Longueuil (CA); Lidija Malic, Saint Leonard (CA); Keith J. Morton, St-Bruno-de-Montarville (CA); Teodor Veres, Montreal (CA); Charles D. MacPherson, Santa Barbara, CA (US); and Theodoros Garanzotis, Ottawa (CA)
Assigned to National Research Council of Canada, Ottawa (CA); and Bank of Canada, Ottawa (CA)
Filed by NATIONAL RESEARCH COUNCIL OF CANADA, Ottawa (CA); and BANK OF CANADA, Ottawa (CA)
Filed on Dec. 16, 2020, as Appl. No. 17/123,233.
Application 17/123,233 is a continuation of application No. 15/539,488, granted, now 10,921,579, previously published as PCT/IB2015/059968, filed on Dec. 23, 2015.
Claims priority of provisional application 62/096,695, filed on Dec. 24, 2014.
Claims priority of provisional application 62/096,700, filed on Dec. 24, 2014.
Prior Publication US 2021/0173197 A1, Jun. 10, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B42D 25/29 (2014.01); G02F 1/01 (2006.01); G02B 26/02 (2006.01); G02B 1/00 (2006.01); B42D 25/405 (2014.01); B82Y 20/00 (2011.01); B82B 1/00 (2006.01); B42D 25/36 (2014.01); G06Q 30/018 (2023.01); G02F 1/17 (2019.01)
CPC G02B 26/026 (2013.01) [B42D 25/29 (2014.10); B42D 25/36 (2014.10); B42D 25/405 (2014.10); B82B 1/003 (2013.01); B82Y 20/00 (2013.01); G02B 1/005 (2013.01); G02F 1/0128 (2013.01); G06Q 30/0185 (2013.01); G02B 2207/101 (2013.01); G02F 1/172 (2013.01); G02F 2201/38 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A security device that exhibits at least one dynamic response upon change of orientation of the security device with respect to gravity, wherein:
the security device comprises a hollow capsule completely filled with a liquid and one or more microscopic elements; and
the dynamic response:
continues after cessation of the change of orientation with respect to gravity; and
comprises a transition of the one or more microscopic elements:
from substantial mechanical equilibrium to non-equilibrium upon action of the change of orientation with respect to gravity; and
back to substantial mechanical equilibrium after cessation of the change of orientation with respect to gravity, and
wherein the one or more microscopic elements undergo at least one of a rotational motion and a translational motion relative to the liquid during the transition.