Electric heating – Heating devices – With power supply and voltage or current regulation or...
Reexamination Certificate
2006-04-24
2009-12-08
Paschall, Mark H (Department: 3742)
Electric heating
Heating devices
With power supply and voltage or current regulation or...
C219S497000, C219S494000, C219S523000, C244S13400A
Reexamination Certificate
active
07629558
ABSTRACT:
A method for controlling a coefficient of friction between an object and ice includes steps of (1) pulsing power to an interface between the object and the ice to melt an interfacial layer of ice at the interface and decrease the coefficient of friction, (2) facilitating refreezing of the interfacial ice at the interface to increase the coefficient of friction; and (3) repeating steps (1) and (2) to control an average coefficient of friction between the object and the ice. A slider having a surface intended to interface with ice or snow includes a power supply for generating power. The slider also has a heating element that converts power to heat at the surface, the heat being sufficient to melt interfacial ice at the interface, and a controller for controlling delivery of power to the heating element to control friction between the slider and the ice or snow.
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Lathrop & Gage LLP
Paschall Mark H
The Trustees of Dartmouth College
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