US3733057A — In-line fluid mixer

Claim 1

Independent Claim 70 words

An in-line mixer comprising a longitudinal flow chamber, a plurality of vanes secured within said chamber in longitudinal series, said vanes being spaced from one another with adjacent vanes being curved in opposite spiral directions, each of said vanes comprising a plurality of curved sheet members terminating radially from the center of the chamber with their inner edges spaced from one another to define a longitudinal core within said chamber.

Claim 2

Dependent Claim 70 words

An in-line mixer comprising a longitudinal flow chamber, a plurality of vanes secured within said chamber in longitudinal series, said vanes being spaced from one another with adjacent vanes being curved in opposite spiral directions, each of said vanes comprising a plurality of curved sheet members terminating radially from the center of the chamber with their inner edges spaced from one another to define a longitudinal core within said chamber.

Claim 3

Dependent Claim 37 words

The mixer of claim 1 wherein the leading edge of each of said sheet members is inclined from the outer to inner end thereof in the direction of fluid flow to prevent accumulation of solid material thereon.

Claim 4

Dependent Claim 30 words

The mixer of claim 1 wherein the flow chamber comprises a tube comprising a plurality of abutting tube sections, each of said tube sections having a single vane disposed therein.

Claim 5

Dependent Claim 88 words

An in-line fluid mixer for mixing fibers dispersed in a liquid, comprising a longitudinal flow chamber, a plurality of spiral vanes secured within said chamber in longitudinal series, said vanes being spaced from one another and adjacent vanes being curved in opposite spiral directions, each of said vanes comprising a plurality of curved sheets each having a leading edge with respect to fluid flow, each of said edges being inclined from its outer to inner end thereof in the direction of fluid flow to minimize fiber hang-up thereon.

Claim 6

Dependent Claim 88 words

An in-line fluid mixer for mixing fibers dispersed in a liquid, comprising a longitudinal flow chamber, a plurality of spiral vanes secured within said chamber in longitudinal series, said vanes being spaced from one another and adjacent vanes being curved in opposite spiral directions, each of said vanes comprising a plurality of curved sheets each having a leading edge with respect to fluid flow, each of said edges being inclined from its outer to inner end thereof in the direction of fluid flow to minimize fiber hang-up thereon.

Claim 7

Dependent Claim 86 words

An in-line fluid mixer comprising a tube made up of a plurality of abutting sections, and a spiral mixing vane in each of said sections, adjacent mixing vanes being spirally curved in opposite directions and being spaced from one another, each of said vanes comprising a plurality of sheet-like members, each of said members being secured along one edge to the inner surface of the tube and terminating radially from the center of its respective tube section to define an open central core through said tube.

Claim 8

Dependent Claim 86 words

An in-line fluid mixer comprising a tube made up of a plurality of abutting sections, and a spiral mixing vane in each of said sections, adjacent mixing vanes being spirally curved in opposite directions and being spaced from one another, each of said vanes comprising a plurality of sheet-like members, each of said members being secured along one edge to the inner surface of the tube and terminating radially from the center of its respective tube section to define an open central core through said tube.

Claim 9

Dependent Claim 37 words

The mixer of claim 5 wherein the sheet-like members have leading edges with respect to fluid flow and wherein said edges are inclined in the direction of fluid flow from the outer to the inner ends thereof.

Claim 10

Dependent Claim 91 words

An in-line mixer for fluids conveyed through pipes, especially fluids containing fibrous matter, comprising a section of pipe and a plurality of curved sheet-like vanes secured in series longitudinally to the inner wall of the pipe, the vanes terminating radially from the center of the pipe to define an open central core through the pipe, each of said vanes having a leading edge inclined from the outer to the inner ends thereof to accommodate self-cleaning into said central core of fibrous matter temporarily hung-up on the leading edges of the vanes.

Claim 11

Dependent Claim 91 words

An in-line mixer for fluids conveyed through pipes, especially fluids containing fibrous matter, comprising a section of pipe and a plurality of curved sheet-like vanes secured in series longitudinally to the inner wall of the pipe, the vanes terminating radially from the center of the pipe to define an open central core through the pipe, each of said vanes having a leading edge inclined from the outer to the inner ends thereof to accommodate self-cleaning into said central core of fibrous matter temporarily hung-up on the leading edges of the vanes.

Claim 12

Dependent Claim 18 words

The mixer of claim 7 wherein alternating vanes are of opposite hand and are spaced from one another.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-05-14	1976-11-13	1977-05-15	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-05-14	1980-11-13	1981-05-15	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-05-14	1984-11-13	1985-05-15	$7700.00	Window Closed / Lapsed

In-line fluid mixer

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