초록 ▼

A fan blade is adjustably connected to a power driven shaft by means of a hollow coupling with a flat bearing surface on its inside face, and surrounding a hole through its radially outer face. The fan blade shank extends through the hole and is captured by a split ring that has a rim which is compr

A fan blade is adjustably connected to a power driven shaft by means of a hollow coupling with a flat bearing surface on its inside face, and surrounding a hole through its radially outer face. The fan blade shank extends through the hole and is captured by a split ring that has a rim which is compressed against the inside bearing surface by a shoulder on the shank. A removable yoke is held against the blade shaft or shoulder by bolts which pass through the coupling\s radially outer face, span the rims and shoulder, and engage into tapped holes in the yoke.

대표청구항 ▼

A fan blade assembly comprising: (a) a hub adapted to be connected to a power driven shaft, a plurality of radial spokes extending outwardly from said hub, a hollow coupling housing attached on one side to the radially outer end of each radial spoke, there being a hole through the radially opposite

A fan blade assembly comprising: (a) a hub adapted to be connected to a power driven shaft, a plurality of radial spokes extending outwardly from said hub, a hollow coupling housing attached on one side to the radially outer end of each radial spoke, there being a hole through the radially opposite side of each housing, circumferential spokes connecting adjacent radial spokes; (b) a fan blade connected to each housing, each blade having a radially inwardly directed end shank portion with an enlarged shoulder extending into one of said housings through its hole; and (c) means for attaching each blade to its coupling housing comprising, a split ring comprising a pair of separate members each having an outwardly protruding rim, each pair of members extending through the hole in one of said housings with their rims held in abutment against the inside of said housing around its hole by the shoulder of its associated blade, said members encircling said shank portion of such blade and substantially filling said hole around said shank portion, and removable yoke means in said housing held in tight frictional engagement against said shank portion by a plurality of fasteners passing through apertures located in said housing and being adjustably connected to said yoke means.