Patent ID: 8166890

Claim:
A cab isolation system for a locomotive including a cab having a front and a rear and an underframe, and a short hood engaging the front of the cab and situated on the underframe, said cab isolation system comprising: at least one pivot operatively engaging the rear of the cab to the underframe, said pivot selected to control the frequency and magnitude of vertical, lateral and longitudinal natural frequencies near the rear of the cab, at least one spring operatively engaging the front of the cab to the underframe via at least a portion of the short hood, wherein a cab pitch natural frequency is established by the spring between the cab and the short hood, said spring selected to maintain a lower cab pitch natural frequency relative to the underframe first bending natural frequency, wherein the pivot and spring are situated to isolate the cab from the first bending natural frequency of the underframe, and a locomotive operator workspace positioned generally in the middle of the cab, wherein said spring is situated in front of said locomotive operator workspace and near the front of the cab and said pivot is situated behind said locomotive operator workspace and near the rear of the cab.