Cushion mounting bearing adaptor for railway trucks

Claim 2

A resilient elastomeric cushion for installation between a bearing adapter and the roof of pedestal jaws of a side frame of a railway vehicle, said cushion having a body portion consisting of elastomer and adapted to haVe one side thereof bonded directly on the adapter for movement therewith and an opposite side adapted to be bonded directly to said roof, said body portion having on its opposite side a pair of spaced upwardly projecting flanges with a space therebetween to receive the roof of pedestal jaws of a side frame therein, the distance between the flanges being slightly less than the width of the roof so the cushion is stressed slightly in tension and the flanges firmly grip the side frame when installed on the railway truck, said cushion having an elasticity which permits lateral movement by shear therein between the bearing assembly and side frame.

Claim 3

The cushion of claim 1 having a pair of depending flanges having a longitudinal axis substantially parallel with the longitudinal axis of the upwardly projecting flanges, said depending flanges being spaced apart a distance slightly less than the length of the adapter along its longitudinal axis whereby said flanges will firmly grip the adapter and secure the adapter and cushion against relative movement therebetween.

Claim 4

The cushion of claim 1 wherein said body portion is adapted to be adhesively secured in a pocket on an adapter.

Claim 5

The cushion of claim 1 of rubber having a shear stiffness of from about 7,000 to about 12,000 pounds per inch and a shear modulus of from about 130 to about 210 pounds per square inch.

Claim 6

In a truck for a railway vehicle, a set of wheels and an axle joining the wheels, a bearing assembly at each end of the axle, a pair of side frames each having pedestal jaws accommodating therebetween one of said bearing assemblies, an adapter element disposed on said bearing assembly for lateral movement therewith, a resilient elastomeric cushion disposed between the adapter and the overlying roof of pedestal jaws of the side frame, said cushion having a body consisting of elastomer with a surface bonded to the adapter and an opposite surface bonded to the roof, and a pair of flanges integral with the body extending upwardly along opposite walls of the side frame, the spacing of said flanges being less than the width of the roof enclosed therebetween whereby said cushion is under tension and the flanges firmly grip the side frame while the truck is at rest.

Claim 7

In a truck for a railway vehicle, a set of wheels and an axle joining the wheels, a bearing assembly at each end of the axle, a pair of side frames each having pedestal jaws accommodating therebetween one of said bearing assemblies, an adapter element disposed on said bearing assembly for lateral movement therewith, a resilient elastomeric cushion disposed between the adapter and the overlying roof of pedestal jaws of the side frame, said cushion having a body consisting of elastomer with a surface bonded to the adapter and an opposite surface bonded to the roof, and a pair of flanges integral with the body extending upwardly along opposite walls of the side frame, the spacing of said flanges being less than the width of the roof enclosed therebetween whereby said cushion is under tension and the flanges firmly grip the side frame while the truck is at rest.

Claim 8

The truck of claim 5 wherein the adjacent surfaces of the cushion body and the side frame are bonded together.

Claim 9

The truck of claim 6 wherein the cushion has a pair of spaced depending flanges which extend over the ends of the adapter, the space between the depending flanges being less than the dimension of the adapter therebetween whereby the cushion body is under tension and the flanges firmly grip the adapter.

Claim 10

The truck of claim 5 wherein the adapter has a pair of spaced upwardly projecting flanges along opposite edges thereof and about the edges of the cushion, the longitudinal axis of the flanges lying in a plane substantially parallel with the truck''s axle.

Claim 11

The truck of claim 8 wherein the adapter has a second pair of axially spaced flanges which combine with the first said pair of flanges to enclose a substantially rectangular shaped pocket adapted to receive the body portion of the cushion.

Claim 12

The truck of claim 5 wherein the cushion is rubber and has a shear stiffness of from about 7,000 to about 12,000 pounds per inch and a shear modulus of from about 130 to about 210 pounds per square inch.

Claim 13

In a truck for a railway vehicle having a side frame with pedestal jaws, a bearing adapter overlying and secured to a bearing assembly and an elastomeric pad adhesively secured to the adapter and to the roof of the pedestal jaws of the side frame, an improved bearing adapter having an upper substantially flat surface and an opposite substantially arcuate shaped surface corresponding substantially to the contour of the top of the bearing assembly and carrying a depending leg at each corner thereof which extends downwardly along the side of the bearing assembly, said legs beinG spaced axially a distance greater than the thickness of the said pedestal jaws, the upper surface of each leg being disposed substantially in the same plane as the upper surface of the adapter, and a flange projecting upwardly from said upper surface along each side of the adapter which carries said legs.

Claim 14

In a truck for a railway vehicle having a side frame with pedestal jaws, a bearing adapter overlying and secured to a bearing assembly and an elastomeric pad adhesively secured to the adapter and to the roof of the pedestal jaws of the side frame, an improved bearing adapter having an upper substantially flat surface and an opposite substantially arcuate shaped surface corresponding substantially to the contour of the top of the bearing assembly and carrying a depending leg at each corner thereof which extends downwardly along the side of the bearing assembly, said legs beinG spaced axially a distance greater than the thickness of the said pedestal jaws, the upper surface of each leg being disposed substantially in the same plane as the upper surface of the adapter, and a flange projecting upwardly from said upper surface along each side of the adapter which carries said legs.

Claim 15

The truck of claim 11 wherein the adapter has flanges around each edge thereof enclosing a pocket which is adapted to receive the elastomeric pad.