Brake disk construction

Claim 1

A brake disk construction, comprising, in combination, a circular hub unit adapted to be connected to a vehicle wheel for rotation therewith and comprised of a plurality of radially outwardly extending angularly spaced carrier arms each comprised of a pair of angularly spaced prong portions defining between themselves a receiving recess; a circular brake ring unit surrounding said hub unit and comprised of angularly spaced radially inwardly projecting mounting projections each clamped between the two prong portions of a respective carrier arm, said brake ring unit being divided along at least one radial plane into at least two parts located at opposite sides of the axis of said circular brake ring unit, each part having surfaces abutting corresponding surfaces of the adjoining part to form radially extending seams located in said at least one radial plane, wherein at least one of said mounting projections constitutes the radially innermost part of a radially extending joining portion forming part of said circular brake ring unit, and wherein said at least one mounting projection and the associated radially extending joining portion are bisected by said radial plane to form two halves each fast with a respective one of said parts of said brake ring unit; and connecting means dismountably mounting said brake ring unit on said hub unit by releasably connecting together said parts of said brake ring unit, whereby to permit separation of said parts of said brake ring unit to facilitate dismounting of said brake ring unit from said hub unit, said connecting means including an elongated connector unit oriented perpendicular to said axis and to said radial plane and passing through and connecting together said two halves of said joining portion, wherein said brake ring unit is comprised of two rigidly connected axially spaced annular disk-shaped sections, and wherein said joining portion and elongated connector unit are located intermediate said two annular disk-shaped sections, wherein said two axially spaced annular disk-shaped sections are joined together by radially extending ribs which define radially extending cooling passages open at both their radially inner and radially outer ends for the flow of cooling air in radial direction through the space between said disk-shaped sections, wherein said receiving recesses and said mounting projections extend in direction axially of said hub unit and of said brake ring unit, wherein said connecting means further includes an elongated centering member parallel to said connector unit and passing through and properly positioning said two halves of said joining portion relative to each other, wherein said connecting means further includes wedge members wedged into the ends of said axially extending receiving recesses to prevent relative axial shifting between said hub unit and said circular brake ring unit, wherein said axially elongated mounting projections are shorter in axial direction than said axially extending receiving recesses, and wherein each axially extending receiving recess has at each of its axial ends a widened portion in which is received and wedged one of said wedge members, and wherein said connecting means further includes a plurality of screws each passing through and connecting together the two wedge members located in a respective one of the receiving recesses.