The invention provides a novel fragrance material comprising a compound having the structure-2,6,6,9-tetramethyltricyclo-5. The V-rake further includes first and second rake booms each having a front end and a back end pivotally connected to the back section such that the front ends of the booms can be swung between a transport position and an operating position. A current produced by the battery is bypassed around the pack to be reconditioned by a bypass circuit. A threshold number of electrical pulses and an activation frequency at which the threshold number of electrical pulses is repeated activates preemption. Keying means is provided between the base plate and the recessed area so as to prevent the base plate from mismating with the socket base.