Inventor
WRONKIEWICZ ROBERT D
US9 patents
⚠️ This page may combine multiple inventors who share the name “WRONKIEWICZ ROBERT D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AMSTED IND INC
8 patentsUS4953471ASep 4, 1990
Friction shoe assembly for repair of worn railway truck
AMSTED IND INC62 citations95
US5718177AFeb 17, 1998
Railway truck sideframe with internal ribs in bottom member
AMSTED IND INC29 citations91
US5111753AMay 12, 1992
Light weight fatigue resistant railcar truck bolster
AMSTED IND INC77 citations91
US6425334B1Jul 30, 2002
Friction shoe for freight car truck
AMSTED IND INC68 citations90
US5305694AApr 26, 1994
Sideframe with increased fatigue life having longer cross-sectional thickness transition zone
AMSTED IND INC23 citations90
US5749301AMay 12, 1998
Multi-rate vertical load support for an outboard bearing railway truck
AMSTED IND INC45 citations88
US5452665ASep 26, 1995
Bolster friction shoe pocket with relieved outer wall
AMSTED IND INC51 citations88
US5791258AAug 11, 1998
Railway truck with elastometric suspension
AMSTED IND INC10 citations73