Wright Aeronautical Corp. v. General Motors Corp.

*644Defendant mounts on a disc affixed to the crankshaft six bifilar pendulum bal-ancers, the multiple number being so provided and designed as to eliminate vibrations of different frequencies. Each one of these pendulum rolls around with the disc and the crankshaft and, at the same time, oscillates to and fro according to the laws of centrifugal force. For each balancer two holes about 2 inches apart are drilled in the disc and two corresponding holes of oversize and larger than those in the disc are drilled through the balancer. In each of the two holes on each disc is placed a steel roller and…