A - Human Necessities – 63 – B
Patent
A - Human Necessities
63
B
A63B 67/14 (2006.01) G01V 15/00 (2006.01) A63B 71/06 (2006.01)
Patent
CA 2363877
A curling rock for use in the sport of curling where the rock is expected to be released from a curling player prior to the crossing of a hog line. A part of the rock is subject to be magnetically activated so that a magnetic field from an activated rock is sensed for detecting the rock's crossing of the hog line. The rock includes: a handle for being touched by a curling player; and an electric circuit for sensing the presence of a curling player, the electric circuit including (i) a capacitor coupled to the handle, the capacitance value of the capacitor being varied in response to the presence of the curling player at the handle; and (ii) an activator for magnetically activating a part of the rock in response to the variation of the capacitance value of the capacitor. For example, the handle of the rock may includes a metallic portion. When a curling player touches the metallic handle, the capacitance value is varied and the oscillation frequency is accordingly varied. In response to the variation of the frequency, a magnetic field is generated by the activating means to activate the rock.
Ackerman Kevin
Adam Jarret
Koch Johanna
Salt J. Eric
Smith Jason
Ackerman Kevin
Adam Jarret
Kirby Eades Gale Baker
Koch Johanna
Salt J. Eric
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