Inventor
SPENCER CHARLES P
US15 patents
⚠️ This page may combine multiple inventors who share the name “SPENCER CHARLES P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AMSTED IND INC
14 patentsUS4825776AMay 2, 1989
Railway truck friction shoe with resilient pads
AMSTED IND INC63 citations96
US5722327AMar 3, 1998
Device for improving warp stiffness of a railcar truck
AMSTED IND INC61 citations95
US5086707AFeb 11, 1992
Self adjusting constant contact side bearing for railcars
AMSTED IND INC57 citations95
US5746137AMay 5, 1998
Railcar truck bearing adapter construction
AMSTED IND INC70 citations94
US5086708AFeb 11, 1992
Railcar truck bolster with immobilized friction shoes
AMSTED IND INC60 citations93
US6227122B1May 8, 2001
Side frame-bolster interface for railcar truck assembly
AMSTED IND INC52 citations92
US6186075B1Feb 13, 2001
Side frame-bolster interface for railcar truck assembly
AMSTED IND INC56 citations92
US5921186AJul 13, 1999
Bolster land arrangement for a railcar truck
AMSTED IND INC51 citations92
US4926757AMay 22, 1990
Electrically grounded railway truck
AMSTED IND INC25 citations92
US4892324AJan 9, 1990
Fifth wheel mounting pad
AMSTED IND INC29 citations92
US4825775AMay 2, 1989
Railcar truck bolster with preassembled friction shoes
AMSTED IND INC64 citations91
US5097973AMar 24, 1992
Railcar articulated connector and wedge shim therefore
AMSTED IND INC15 citations73
US5573126ANov 12, 1996
Gravity wedge for a slackless railcar connector assembly
AMSTED IND INC7 citations66
US5746136AMay 5, 1998
Dynamically stable, lightweight railcar support system
AMSTED IND INC4 citations60