Inventor
ROLLINS DALLAS W
US14 patents
Patents
14 patentsUS3994239ANov 30, 1976
Tank car head shield assembly
ACF IND INC29 citations78
US4003319AJan 18, 1977
Tubular through sill railway hopper car
ACF IND INC21 citations77
US4466558AAug 21, 1984
Aerator control arrangement
ACF IND INC15 citations73
US4323096AApr 6, 1982
Combination vacuum relief valve and pressure relief valve which are protected from the atmosphere
ACF IND INC16 citations73
US4234158ANov 18, 1980
Combination tank car valve skid and valve seat wherein the skid is welded to the valve seat
ACF IND INC12 citations73
US4184663AJan 22, 1980
Combination tank car valve skid and valve seat
ACF IND INC14 citations73
US4165820AAug 28, 1979
Aerator control arrangement
ACF IND INC17 citations73
US4126094ANov 21, 1978
Combination hatch cover having supplemental locking arrangement
ACF IND INC12 citations72
US4040363AAug 9, 1977
Combination hatch covers
ACF IND INC15 citations72
US4015751AApr 5, 1977
Quick change fluidizing outlet assembly
ACF IND INC7 citations72
US4206709AJun 10, 1980
Hopper car for liquid unit-train service
ACF IND INC3 citations62
US3958722AMay 25, 1976
Self indexing elbow
ACF IND INC3 citations62
US4014578AMar 29, 1977
Variable metering drop valve
ACF IND INC3 citations53
US4234159ANov 18, 1980
Combination tank car valve skid and valve seat in which end portions on the skid are attached to the tank with fasteners which do not require stress relieving of the tank
ACF IND INC1 citations51