US 11,807,282 B2
Railroad car truck damper wedge fittings
Jamal Hematian, Burlington (CA); and Kenneth Wayne Black, Hamilton (CA)
Assigned to National Steel Car Limited, Hamilton (CA)
Filed by NATIONAL STEEL CAR LIMITED, Hamilton (CA)
Filed on Nov. 9, 2020, as Appl. No. 17/092,771.
Prior Publication US 2022/0144321 A1, May 12, 2022
Int. Cl. B61F 5/12 (2006.01); B61F 3/02 (2006.01); B61F 5/06 (2006.01)
CPC B61F 5/122 (2013.01) [B61F 3/02 (2013.01); B61F 5/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A friction pad assembly that engages a seat of a friction damper wedge body that mounts in a bolster pocket of a truck bolster of a railroad car truck, wherein said friction pad assembly comprises:
a retainer and a mating friction pad that engages said retainer;
said retainer having a first interface that engages said friction pad; and
said retainer having a second interface that engages the seat of the friction damper wedge;
said retainer being releasable from the seat of the friction damper wedge body to permit replacement of said friction pad assembly;
said friction pad being releasable from said retainer; and
when said friction pad is engaged with said retainer, and said retainer is engaged with the seat, said retainer is resiliently deflected by being engaged with said friction pad and with the seat.