Universal axial spacer for mounting fan on pump shaft and drive pulley

Claim 2

In a fan spacer adapted to unite existing fans with existing pump drive shafts and pulleys on an engine, the combination of a spacer body having a bore adapted either without reaming, or with reaming, where required, to fit any of said shafts; an axial fan centralizing boss on one end of said body, said boss fitting a bore already provided in one group of said fans; four primary radial slots in said body for accommodating four parallel bolts disposable freely at varying radii from the axis of said body and screwing into tapped holes already provided in said pulleys to secure said body axially to one of said pulleys; and four secondary radial slots in said body equally interspersed circumferentially between said primary radial slots and accommodating another four bolts for securing said fan to said body by extending said bolts through said secondary slots and through bolt holes already provided in said fan.

Claim 3

A combination as recited in claim 1 wherein nut receiving recesses are provided at opposite ends of said secondary slots forming nut stop shoulders symmetric with the medial radial plane A--A of said body, thereby rendering said secondary slots operative irrespective of which end of said body is disposed forwardly, said centralizing boss fitting the axial fan bores only in a certain portion of existing American cars; and a second centralizing boss on the opposite end of said body which only fits the axial fan bores in a different portion of existing American cars.

Claim 4

A combination as recited in claim 1 wherein said body includes a central portion; and four short arms extending radially from the periphery of said central body portion, said primary four radial slots being provided in said central body portion, and said secondary four radial slots being provided mainly in said four arms.

Claim 5

A fan spacer adapted to unite existing fans with existing pump drive shafts and pulleys on engines, the combination of a spacer body having a central body with first and second end portions, said body having a main bore through said first and second end portions for mounting on a shaft, a fan centralizing boss on one end portion of said body, said boss fitting a bore provided in a fan; a second fan centralizing boss of different size formed in said body in the other end portion thereof for cooperation with other size fan bores; four primary slots formed through said body and its respective end portions so that primary slots extend radially outwardly with respect to the axis of the main bore, said primary slots accommodating four parallel bolts disposable freely in said primary slots at varying radii from said main bore axis for securing said body to a pulley; and four secondary slots in said body interspersed circumferentially between the primary radial slots and accommodating another four bolts for securing said fan to said body.

Claim 6

A fan spacer adapted to unite existing fans with existing pump drive shafts and pulleys on engines, the combination of a spacer body having a central body with first and second end portions, said body having a main bore through said first and second end portions for mounting on a shaft, a fan centralizing boss on one end portion of said body, said boss fitting a bore provided in a fan; a second fan centralizing boss of different size formed in said body in the other end portion thereof for cooperation with other size fan bores; four primary slots formed through said body and its respective end portions so that primary slots extend radially outwardly with respect to the axis of the main bore, said primary slots accommodating four parallel bolts disposable freely in said primary slots at varying radii from said main bore axis for securing said body to a pulley; and four secondary slots in said body interspersed circumferentially between the primary radial slots and accommodating another four bolts for securing said fan to said body.

Claim 7

The combination as recited in claim 4, wherein nut receiving recesses are provided in said secondary slots in each end portion of said body, thereby rendering said secondary slots operative irrespective of which end portion of said body and its respective centralizing boss is used.

Claim 8

The combination as recited in claim 4, wherein four short arms extend radially from the periphery of said central body portion, said secondary four radial slots being located respectively in said four arms.