Bolt head shroud
AssigneeCaterpillar Tractor Co.
InventorsGerald D. Hardy, Eugene A. Plouzek, James G. Starling
Life of this patent
Estimating the term…
Abstract
A drive assembly having a shroud structure for providing a low friction covering of securing elements which, in projecting from a rotation portion of the drive assembly, would otherwise cause a power and efficiency loss as the result of a friction drag produced in movement of the projecting elements through a body of lubricating and cooling fluid. The shroud structure is secured to the rotating element by securing structure received in recesses in the shroud to further effectively minimize friction drag losses.
Claims23
In a drive assembly having means defining a cavity, heat transfer lubricant fluid in a lower portion of the cavity, and a rotating clutch assembly in the cavity supported for rotation to have a substantial portion thereof extending downwardly into said fluid for lubrication and cooling of the clutch assembly by said fluid, said clutch assembly including outwardly projecting securing means for securing clutch drums to mounting flanges, means for effectively minimizing frictional drag of said securing means in moving through the fluid, said means for effectively minimizing fluid frictional drag comprising shroud means covering said securing means and rotatable therewith and providing a low fluid friction drag covering for said securing means.
In a drive assembly having means defining a cavity for housing heat transferring lubricant fluid in a lower portion a rotating clutch assembly in the cavity supported for rotation about its axis and having a substantial portion thereof extending downwardly into fluid which serves as a lubricating and cooling medium for the clutch assembly, said clutch assembly including a plurality of outwardly projecting securing means for securing clutch drums to mounting flanges, said securing means being arranged in an annular array about the axis of rotation of the clutch assembly, means for effectively minimizing fluid frictional drag of said securing means during rotational movement thereof through a lubricant, said last mentioned means comprising an annular shroud coaxially secured to the clutch assembly for rotation therewith and covering said securing means.
In a drive assembly having means defining a cavity for housing heat transferring lubricant fluid in a lower portion thereof, a rotating clutch assembly in the cavity supported for rotation, and having a substantial portion thereof extending downwardly into fluid which serves as a lubricating and cooling medium for the clutch assembly, said clutch assembly including a plurality of outwardly projecting securing means for securing clutch drums to mounting flanges arranged in an annular array about the axis of rotation of the clutch assembly, means for effectively minimizing fluid frictional drag of said securing means during rotational movement thereof through a lubricant, said last mentioned means comprising an annular shroud coaxially secured to the clutch assembly for rotation therewith and covering said securing means, said shroud having a recessed portion defining an outwardly opening recess, and a screw being associated with said recessed portion for securing the shroud to the clutch assembly, said screw including a shank portion extending through the recessed portion of the shroud and threadedly secured to the clutch assembly, and a head portion received substantially fully in said recess.
In a drive assembly having means defining a cavity, heat transfer lubricant fluid in a lower portion of the cavity, and a rotating clutch assembly in the cavity supported for rotation to have a substantial portion thereof extending downwardly into said fluid for lubrication and cooling of the clutch assembly by said fluid, said clutch assembly including outwardly projecting securing means for securing clutch drums to mounting flanges, measn for effectively minimizing frictional drag of said securing means in moving through the fluid, said means for effectively minimizing fluid frictional drag comprising a U-section shroud covering said securing means, said securing means securing the shroud to the clutch assembly for rotation therewith and being recessed within the shroud.
Dependencies are inferred from the claim text.