초록 ▼

A track roller carriage assembly, a pair of joining plates joined face to face and each having a half-round deformation portion intermediate its ends, the two deformation portions defining a bolt aperture the upper edges of the joining plates being notched downwardly to provide receiving shoulders,

A track roller carriage assembly, a pair of joining plates joined face to face and each having a half-round deformation portion intermediate its ends, the two deformation portions defining a bolt aperture the upper edges of the joining plates being notched downwardly to provide receiving shoulders, and a suspension bolt having on it a head which contains slots which engage side faces of the joining plates adjacent the notches to thereby prevent rotation of the suspension bolt itself.

대표청구항 ▼

A door track roller carriage assembly comprising a pair of joining plates, said joining plates having outer side faces, means retaining the joining plates in face to face contiguity as a sub-assembly, each joining face having a centrally located outwardly extending deformation portion which co-opera

A door track roller carriage assembly comprising a pair of joining plates, said joining plates having outer side faces, means retaining the joining plates in face to face contiguity as a sub-assembly, each joining face having a centrally located outwardly extending deformation portion which co-operates with the other said deformation portion to form a bolt aperture, surfaces extending from the top of the joining plate sub-assembly defining a pair of notches which extend upwardly from receiving shoulders at the mouth of said bolt aperture, and a suspension bolt extending downwardly through said bolt aperture, the bolt having a head itself having surfaces defining slots extending radially inwardly from diametrically opposite sides and engaging the outer side faces of the joining plates when the bolt head is engaged by surfaces defining said sub-assembly notches, a pair of transversely extending parallel bearings carried by said sub-assembly, axles extending through and journalled for rotation in respective said bearings, and track engaging roller wheels carried by said axles.