Outboard planetary gear assembly for tracked vehicles

In a tracked vehicle drive train including a differential and outboard planetary gears driven by said differential, the improvement comprising an outboard planetary gear housing containing said planetary gears, said planetary gear housing having a drive ring integral with said housing and an externally undular sprocket mounted directly on said drive ring, said housing being bell-shaped, with an open mouth at its axially outer end, a planetary gear carrier mounted on said housing at said open mouth, and an annular cover plate mounted on said planetary gear carrier, said cover plate having a central open-ended well therein, and a sight glass mounted in said well.

In a tracked vehicle drive train including a differential and outboard planetary gears driven by said differential, the improvement comprising an outboard planetary gear housing containing said planetary gears, said planetary gear housing having a drive ring integral with said housing and an externally undular sprocket mounted directly on said drive ring, said housing being bell-shaped, with an open mouth at its axially outer end, and a planetary gear carrier mounted on said housing at said open mouth, said housing carrying a twelve tooth, 4 15/16" pitch sprocket, the differential having a reduction of less than 5 and the outboard planetaries, a reduction of more than 5.

In a vehicle drive train including a differential and outboard planetary gears driven by said differential, the improvement comprising a bell-shaped planetary gear housing having an axially outwardly opening open mouth, said housing being rotatably mounted on a fixed spindle, a ring gear holder having an axially extending collar part mounted on said fixed spindle and a radially extending part carrying a ring gear, a planetary gear carrier fixedly mounted on said housing, a roller bearing with a cone fixedly mounted on said ring gear holder collar part and engaging said radially extending part and a cup fixedly mounted in a seat in said housing, and a cover bolted to said planetary gear carrier, and a sight glass mounted in said cover.

In a tracked vehicle in which a track is driven by a sprocket mounted on a drive ring with inboard and outboard radial surfaces and an outer, bridging, peripheral surface between radially outer edges of said radial surfaces, the improvement comprising said sprocket being made in facing sections, one on either side of said drive ring, each of said sections having a radially extending wall along the full reach of a radial surface of said drive ring and an axially extending transverse wall projecting across said drive ring, said axially extending wall having a free edge, the free edge of each section butting against the free edge of the axially extending wall of the facing section, completely to cover said drive ring.

In a tracked vehicle drive train including a differential and outboard planetary gears driven by said differential, the improvement comprising an outboard planetary gear housing containing said planetary gears, said planetary gear housing having a drive ring integral with an outer surface of said housing, said drive ring having outboard and inboard radial side surfaces and said housing having a cylindrical surface contiguous a radially inner edge of each of said outboard and inboard radial side surfaces, said housing cylindrical surface contiguous said outboard radial drive ring surface extending axially outboardly beyond the said outboard radial surface and said housing cylindrical surface contiguous said inboard radial drive ring surface extending axially inboardly beyond said inboard radial surface, and an externally undular sprocket mounted directly on said drive ring and engaging said drive ring radial and housing cylindrical surfaces.