US4941297A — Flared vane for abrasive blasting wheel

Claim 1

Independent Claim 138 words

An abrasive blasting wheel assembly comprising a rotor, a runnerhead concentrically mounted on said rotor for rotation at a predetermined operating RPM, a plurality of spaced radially arranged abrasive particle throwing vanes, means detachably securing said vanes to the face of said runnerhead, impeller means carried by said rotor for feeding particulate abrasive material to said vanes, each of said vanes being provided with an abrasive throwing face having a radially extending centerline, said face being disposed perpendicular to the face of said runnerhead and having spaced side portions flaring away from an abrasive receiving heel end portion of said vane to a discharge end of said vane at a continuous uninterrupted flare angle in the range of 2° to 7° as measured relative to the centerline of said face from said heel end to said discharge end.

Claim 2

Dependent Claim 138 words

An abrasive blasting wheel assembly comprising a rotor, a runnerhead concentrically mounted on said rotor for rotation at a predetermined operating RPM, a plurality of spaced radially arranged abrasive particle throwing vanes, means detachably securing said vanes to the face of said runnerhead, impeller means carried by said rotor for feeding particulate abrasive material to said vanes, each of said vanes being provided with an abrasive throwing face having a radially extending centerline, said face being disposed perpendicular to the face of said runnerhead and having spaced side portions flaring away from an abrasive receiving heel end portion of said vane to a discharge end of said vane at a continuous uninterrupted flare angle in the range of 2° to 7° as measured relative to the centerline of said face from said heel end to said discharge end.

Claim 3

Dependent Claim 45 words

The wheel assembly of claim 1 wherein said wheel assembly has a diameter of about 18 inches, an operating RPM of said rotor in the range of 1700 RPM to 2500 RPM, and an abrasive flow velocity in the range of 170 to 290 FPS.

Claim 4

Dependent Claim 35 words

The wheel assembly of claim 1 wherein the throwing face of said vane is of a curved configuration from the heel portion to the discharge end of the vane at the periphery of said runnerhead.

Claim 5

Dependent Claim 24 words

The wheel assembly of claim 3 wherein said side portions of said vane face include spaced side walls flaring away from said heel portion.

Claim 6

Dependent Claim 49 words

The whell assembly of claim 1 wherein said impeller comprises a stationary outer casing and an impeller within said outer casing rotatably connected to said rotor, a discharge opening in said outer casing for feeding abrasive material from said rotatable impeller to the heel end portion of said vanes.

Claim 7

Dependent Claim 108 words

An abrasive particle throwing vane for use in a rotatable blasting wheel assembly, said vane comprising a heel end portion spaced from a discharge end portion, a particle throwing face intermediate said end portions, said face having a radially extending centerline, said face at any location intermediate said end portions being parallel to said heel end portion, and spaced sides of said face flaring away from said heel end portion to said discharge end of said throwing face at a continuous uninterrupted flare angle in the range of 2° to 7° as measured relative to the centerline of said face from said heel end to said discharge end.

Claim 8

Dependent Claim 108 words

An abrasive particle throwing vane for use in a rotatable blasting wheel assembly, said vane comprising a heel end portion spaced from a discharge end portion, a particle throwing face intermediate said end portions, said face having a radially extending centerline, said face at any location intermediate said end portions being parallel to said heel end portion, and spaced sides of said face flaring away from said heel end portion to said discharge end of said throwing face at a continuous uninterrupted flare angle in the range of 2° to 7° as measured relative to the centerline of said face from said heel end to said discharge end.

Claim 9

Dependent Claim 15 words

The throwing vane of claim 6 wherein said flare angle is no greater than 21/2°.

Claim 10

Dependent Claim 22 words

The throwing vane of claim 6 wherein the face of said vane is curved from said heel portion to said discharge end.

Claim 11

Dependent Claim 35 words

The throwing vane of claim 6 wherein the said spaced sides of said throwing face comprise vertical sidewalls flaring away from the heel portion to the discharge end of said vane at said flare angle.

Claim 12

Dependent Claim 19 words

The wheel assembly of claim 1, wherein the flare angle of each of said side portions is the same.

Claim 13

Dependent Claim 19 words

The throwing vane of claim 6, wherein the flare angle of each of said spaced sides is the same.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-07-16	1994-01-15	1994-07-17	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-07-16	1998-01-15	1998-07-17	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-07-16	2002-01-15	2002-07-17	$7700.00	Window Closed / Lapsed

Flared vane for abrasive blasting wheel

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