Robert D. Wronkiewicz

Person

Park Ridge, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Friction shoe for freight car truck
- Patent number 6,425,334
- Issue date Jul 30, 2002
- AMSTED Industries Incorporated
- Robert D. Wronkiewicz
- B61 - RAILWAYS
Information Patent Grant
Railway truck with elastometric suspension
- Patent number 5,791,258
- Issue date Aug 11, 1998
- AMSTED Industries Incorporated
- V. Terrey Hawthorne
- B61 - RAILWAYS
Information Patent Grant
Multi-rate vertical load support for an outboard bearing railway truck
- Patent number 5,749,301
- Issue date May 12, 1998
- AMSTED Industries Incorporated
- Robert D. Wronkiewicz
- B61 - RAILWAYS
Information Patent Grant
Railway truck sideframe with internal ribs in bottom member
- Patent number 5,718,177
- Issue date Feb 17, 1998
- AMSTED Industries Incorporated
- Robert D. Wronkiewicz
- B61 - RAILWAYS
Information Patent Grant
Bolster friction shoe pocket with relieved outer wall
- Patent number 5,452,665
- Issue date Sep 26, 1995
- AMSTED Industries Incorporated
- Robert D. Wronkiewicz
- B61 - RAILWAYS
Information Patent Grant
Sideframe with increased fatigue life having longer cross-sectional...
- Patent number 5,305,694
- Issue date Apr 26, 1994
- AMSTED Industries Incorporated
- Robert D. Wronkiewicz
- B61 - RAILWAYS
Information Patent Grant
Strengthened structure for a steering arm assembly having a compoun...
- Patent number 5,224,428
- Issue date Jul 6, 1993
- Robert D. Wronkiewicz
- B61 - RAILWAYS
Information Patent Grant
Light weight fatigue resistant railcar truck bolster
- Patent number 5,111,753
- Issue date May 12, 1992
- AMSTED Industries Incorporated
- Herbert L. Zigler
- B61 - RAILWAYS
Information Patent Grant
Friction shoe assembly for repair of worn railway truck
- Patent number 4,953,471
- Issue date Sep 4, 1990
- AMSTED Industries Incorporated
- Robert D. Wronkiewicz
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
FRICTION SHOE FOR FREIGHT CAR TRUCK
- Publication number 20020073880
- Publication date Jun 20, 2002
- Robert D. Wronkiewicz
- B61 - RAILWAYS

Robert D. Wronkiewicz

Person

Patents Grantslast 30 patents

Friction shoe for freight car truck

Railway truck with elastometric suspension

Multi-rate vertical load support for an outboard bearing railway truck

Railway truck sideframe with internal ribs in bottom member

Bolster friction shoe pocket with relieved outer wall

Sideframe with increased fatigue life having longer cross-sectional...

Strengthened structure for a steering arm assembly having a compoun...

Light weight fatigue resistant railcar truck bolster

Friction shoe assembly for repair of worn railway truck

Patents Applicationslast 30 patents

FRICTION SHOE FOR FREIGHT CAR TRUCK