US Patent No: 4,674,411

Number of patents in Portfolio can not be more than 2000

Railroad-vehicle truck frame with transoms having flanges and central webs

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Importance

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Abstract

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A railroad-vehicle truck with a frame that yields under torsion and consists of transoms (2) and side frames bars (1) welded into an H. The transoms (2) are positioned such that the planes that the transom webs (2k) lie in intersect at one line (S7), which lies between the flanges (21) of the transoms. Each of the flanges of the transoms are fastened to one of the upper and lower flanges on the depressed middle section of the side frame. Helical compression springs are positioned on the upper flanges of the depressed section, with a bolster on the springs, and load dependent side bearings between the compression springs and the bolster. The side frames are resistant to torque over their total length, but the transoms yield under torque. Thus the truck has sufficient corner rigidity and prevents high material stresses caused by torque.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
WEGMANN & CO. GMBHKASSEL29
WAGGONFABRIK TALBOT5100 AACHEN3

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Schindehutte, Manfred Calden, DE 4 69

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
4,244,297 Articulated railway car trucks 31 1977

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
NATIONAL STEEL CAR LIMITED (21)
7,255,048 Rail road car truck with rocking sideframe 12 2002
7,004,079 Rail road car and truck therefor 3 2003
7,823,513 Rail road car truck 2 2003
7,845,288 Rail road car truck and members thereof 12 2004
7,143,700 Rail road car truck and fittings therefor 9 2004
7,631,603 Rail road car truck and bolster therefor 5 2004
7,267,059 Rail road freight car with damped suspension 9 2005
7,681,506 Truck bolster 2 2005
7,328,659 Rail road freight car with resilient suspension 12 2005
7,497,169 Rail road car truck and fittings therefor 5 2006
7,603,954 Rail road car and truck therefor 1 2007
7,610,862 Rail road car truck with rocking sideframe 1 2007
7,699,008 Rail road freight car with damped suspension 0 2007
7,571,684 Rail road freight car with damped suspension 0 2007
7,775,163 Rail road car and bearing adapter fittings therefor 0 2007
7,946,229 Rail road car truck 0 2008
7,654,204 Rail road car truck with bearing adapter and method 1 2008
8,011,306 Rail road car and truck therefor 1 2009
8,113,126 Rail road car truck and bolster therefor 0 2009
8,413,592 Rail road car truck 2 2010
8,272,333 Rail road car truck and members thereof 0 2010
 
USINES ET ACIERIES DE SAMBRE ET MEUSE (SOCIETE ANONYME FRANCAISE), TOUR AURORE CEDEX 5, 92080 PARIS LA DEFENSE, FRANCE A CO. OF FRANCE (2)
4,922,832 Intermodal road/rail transportation system 5 1988
4,955,144 Compatible intermodal road/rail transportation system 14 1988
 
TTX COMPANY (1)
4,817,535 Stand alone well car with double axle suspension system 4 1986