Patent ID: 6142081
Filing Date: 2000-11-07
Classification: B61F

Abstract:
A pedestal rocker seat adapted for use in connection with a railway truck including a side frame having a longitudinal axis and a pedestal having spaced apart first and second pedestal jaws and a pedestal roof including a pedestal roof cavity, and a roller bearing adapter member located between the first and second pedestal jaws coupled to a rotatable axle having a longitudinal axis disposed generally transverse to the longitudinal axis of the side frame, said pedestal rocker seat including:an elastomeric pad adapted to be placed within the pedestal roof cavity of the pedestal of the side frame, said pad including a base member having an upper surface adapted to be placed in engagement with the pedestal of the side frame, and a generally pyramidal-shaped projection extending outwardly from said base member, said projection having a generally pyramidal-shaped lower surface, said upper surface and said lower surface of said pad being disposed on opposite sides of said pad relative to one another; anda rocker member having a top side and an opposing bottom side, said top side including a generally pyramidal-shaped surface forming a generally pyramidal-shaped cavity, said pyramidal-shaped projection of said elastomeric pad adapted to be disposed within said pyramidal-shaped cavity of said rocker member, said pyramidal-shaped cavity being complementarily shaped with respect to said pyramidal-shaped projection such that said pyramidal-shaped surface of said projection of said elastomeric pad matingly engages said pyramidal-shaped surface of said cavity of said rocker member, said bottom side of said rocker member including a convex generally cylindrical-shaped curved rocker surface, said rocker surface being curved about a generally linear axis, said rocker surface adapted to rockably engage the roller bearing adapter member with said linear axis of said rocker member disposed generally parallel to the longitudinal axis of the side frame;whereby said pedestal rocker seat enables the side frame to rock transversely with respect to the axle, and enables the axle to horizontally pivot with respect to the side frame to provide the railway truck with passive axle steering.