Patent US5315302A successfully refreshed from Google Patents.
US3966176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing filled resins
Assignee: Individual
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Filing: 1975-08-25
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Granted: 1976-06-29
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Expires: 1995-08-25
Abstract
Abstract The disclosure concerns an improved method and apparatus for employing filled resins in chopper type fiberglass systems. The new technique is characterized by a special mixer for the resin and filler which produces a product which does not settle as fast as prior filled resins, and which has a viscosity low enough to permit use of the conventional chopper equipment employed with unfilled resins. The resin-filler mixture may be pumped directly from the mixing apparatus to the chopper gun and is free of any tendency to set in, and thus clog, the mixer.
Inventors
- 👤 Ivan E. Lux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:24
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/86
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
240 words
Apparatus for mixing resins and fillers comprising a. a vertical tank having a cylindrical side wall and a flat, horizontal bottom wall; b. a vertical rotor shaft supported in bearings carried by the tank and coaxial with the cylindrical side wall; c. a prime mover supported on the outside of the tank and connected in driving relation with the rotor shaft to rotate the shaft in a predetermined direction; d. a plurality of equiangularly spaced rotor blades which are fixed to the shaft, project radially therefrom, and are arranged in at least two axially spaced sets, e. one set being located adjacent the bottom of the tank and the other being located at an intermediate elevation, f. each rotor blade being inclined at an angle on the order of 45° with respect to the horizontal so that its leading edge in said predetermined direction of rotation is at a lower elevation than its trailing edge and the blade acts to force material in the tank in the upward direction; and g. a plurality of imperforate, radial baffles attached to the inside of the side wall and spaced equiangularly about the axis thereof, h. the baffles extending vertically from a region adjacent the tank bottom to an elevation spaced slightly below the top of the tank, i. the radial width of the baffles being such that the inner margins of the baffles are closely adjacent the tips of the rotor blades.
Claim 2
Dependent Claim
240 words
Apparatus for mixing resins and fillers comprising a. a vertical tank having a cylindrical side wall and a flat, horizontal bottom wall; b. a vertical rotor shaft supported in bearings carried by the tank and coaxial with the cylindrical side wall; c. a prime mover supported on the outside of the tank and connected in driving relation with the rotor shaft to rotate the shaft in a predetermined direction; d. a plurality of equiangularly spaced rotor blades which are fixed to the shaft, project radially therefrom, and are arranged in at least two axially spaced sets, e. one set being located adjacent the bottom of the tank and the other being located at an intermediate elevation, f. each rotor blade being inclined at an angle on the order of 45° with respect to the horizontal so that its leading edge in said predetermined direction of rotation is at a lower elevation than its trailing edge and the blade acts to force material in the tank in the upward direction; and g. a plurality of imperforate, radial baffles attached to the inside of the side wall and spaced equiangularly about the axis thereof, h. the baffles extending vertically from a region adjacent the tank bottom to an elevation spaced slightly below the top of the tank, i. the radial width of the baffles being such that the inner margins of the baffles are closely adjacent the tips of the rotor blades.
Claim 3
Dependent Claim
18 words
Apparatus as defined in claim 1 in which the number of baffles equals the number of rotor blades.
Claim 4
Dependent Claim
23 words
Apparatus as defined in claim 1 in which both the rotor blades and the baffles are in the form of straight, flat plates.
Claim 5
Dependent Claim
36 words
Apparatus as defined in claim 1 including a mixture withdrawal pipe which extends into the tank in a region adjacent one of the baffles at the downstream side thereof in the direction of said predetermined rotation.
Claim 6
Dependent Claim
25 words
Apparatus as defined in claim 1 in which there are only two sets of blades; each set contains two blades; and there are four baffles.
Claim 7
Dependent Claim
31 words
Apparatus as defined in claim 5 in which the tips of the blades are spaced radially from the inner margins of the baffles a distance on the order of one-half inch.
Claim 8
Dependent Claim
22 words
Apparatus as defined in claim 6 in which the radial width of each baffle is about one-tenth the diameter of the tank.
Claim 9
Dependent Claim
34 words
Apparatus as defined in claim 1 in which the prime mover rotates the shaft at a speed which produces a tangential velocity at the blade tips on the order of 7-9 feet per second.
Claim 10
Dependent Claim
98 words
A method of using a filled resin in a chopper type fiber-glass system comprising the steps of a. introducing the resin and the desired filler to the tank of the mixing apparatus defined in claim 1; b. causing the prime mover of said mixing apparatus to drive the rotor shaft at a speed which produces a tangential velocity at the tips of the rotor blades on the order of 7-9 feet per second, to thereby effect thorough mixing of the resin and filler; and c. withdrawing the mixture from said tank and feeding it to the chopper gun.
Claim 11
Dependent Claim
22 words
A method as defined in claim 9 in which the resin-filler mixture is pumped directly from said tank to the chopper gun.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |