Flying Tiger Line, Inc., Tiger International, Inc., Adelaware Corporation, Warren Transport, Inc., Aniowa Corporation v. Central States, Southwest and Southeast Areas Pension Funds,teamsters Pension Trust Fund of Philadelphia and Vicinity,western Pennsylvania Teamsters and Employers Pension Fund,teamsters Local 641 Pension Fund, Trucking Employees Ofnorth Jersey Welfare Fund, Central Pennsylvania Teamsterspension Fund, a Multiemployer Pension Plan, As Member of a, 96 F.3d 1432 (3d Cir. 1996)