Methods and structures for removing ice from surfaces

B - Operations – Transporting – 64 – D

Patent

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Details

B64D 15/00 (2006.01) B64D 15/12 (2006.01) H05B 3/00 (2006.01) H05B 3/56 (2006.01)

Patent

CA 2352771

In one embodiment, a system for modifying ice adhesion strength of ice (102) adhered to an object (110). The system includes an electrode (114) that is electrically insulated from the object (110) and a DC source (116), e.g., a battery, coupled to the object (110) and the electrode (114). The source (116) generates a DC bias to an interface between the ice (102) and the object (110) when the ice (110) completes the circuit. The system preferably includes an electrically insulating material (118) disposed between the object (110) and the electrode (114). In another embodiment, a coating (306) comprising a ferroelectric, lossy dielectric, ferromagnetic or semiconductor material is applied to an object. Electromagnetic energy causes the coating to generate heat, which melts snow and ice.

Dans un mode de réalisation, l'invention concerne un système pour modifier la force d'adhérence de la glace à un objet. Ce système comporte une électrode qui est isolée électriquement de l'objet et une source c.c., par exemple une batterie couplée à l'objet et à l'électrode. Cette source génère une polarisation c.c. au niveau d'une interface entre la glace et l'objet lorsque la glace ferme le circuit. Le système comporte de préférence un matériau électro-isolant disposé entre l'objet et l'électrode. Dans un autre mode de réalisation, un revêtement comprenant un matériau ferroélectrique, diélectrique à pertes, ferromagnétique ou semi-conducteur est appliqué à un objet. L'énergie électromagnétique amène le revêtement à produire de la chaleur, ce qui fait fondre la neige et la glace.

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