US3622126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing rotor for plastic gun
Assignee: EBERLE ENTERPRISES
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Filing: 1969-06-16
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Granted: 1971-11-23
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Expires: 1989-06-16
Abstract
Abstract In a gun of the spray gun type for mixing and applying a twopart mixture, such as a plastic and its catalyst, having a mixing chamber that receives at one end thereof controlled or metered amounts of the two ingredients of the mixture from their respective sources of supply and discharges the mixture from an outlet at the other end, the improvement comprising a mixing rotor, with mixing blades extending radially from a central body. The rotor is mounted in the chamber and is rotated continuously while the gun is in use. The upstream sides of the rotor blades are inclined relative to their respective planes of rotation to exert an axial flow impeller type action on the contents of the chamber thereby creating a high degree of turbulence within the chamber that tends to propel the contents back away from the chamber outlet.
Inventors
- 👤 John H Eberle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:32
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/74; B29B7/7438; B29B7/7442; B01; B01F; B01F27/00; B01F27/05; B01F27/07; B01F27/072; B01F27/0722; B29B7/80; B29B7/802; B29B7/803; B29B7/805
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
In a gun for mixing and discharging successive controlled amounts of a two-ingredient mixture of resin and a catalyst, which gun has a mixing chamber with a motor-driven mixing rotor, mounted for rotation therein and a discharge outlet coaxially of the rotor, the improvement comprising: means on said rotor for exerting an axial flow impeller type effect on the mixture in the mixing chamber in a direction away from said outlet to increase turbulence in the mixture within the chamber, and said means on said rotor comprising a plurality of wedgeshaped radial blades.
Claim 2
Dependent Claim
93 words
In a gun for mixing and discharging successive controlled amounts of a two-ingredient mixture of resin and a catalyst, which gun has a mixing chamber with a motor-driven mixing rotor, mounted for rotation therein and a discharge outlet coaxially of the rotor, the improvement comprising: means on said rotor for exerting an axial flow impeller type effect on the mixture in the mixing chamber in a direction away from said outlet to increase turbulence in the mixture within the chamber, and said means on said rotor comprising a plurality of wedgeshaped radial blades.
Claim 3
Dependent Claim
45 words
The improvement of claim 1 wherein: the upstream face of at least one of said blades is inclined at an angle to the direction of flow of the mixture through the chamber and to the tangenT to the circular path described by the rotating blade.
Claim 4
Dependent Claim
48 words
The improvement of claim 2 wherein: said plurality of blades is fixed to the shaft of said rotor in a series of opposed pairs, and alternate pairs of said blades are axially spaced aLong said shaft by a distance at least as great as their largest axial dimension.
Claim 5
Dependent Claim
15 words
The improvement of claim 1 wherein: the upstream faces of said blades are substantially planar.
Claim 6
Dependent Claim
31 words
The improvement of claim 1 wherein: at least one of said blades is located adjacent the discharge end of said chamber and closely spaced to the discharge outlet for said gun.
Claim 7
Dependent Claim
36 words
The improvement of claim 1 wherein: at least one of said blades is located adjacent the discharge end of said chamber and is spaced an equal distance from said discharge end across its entire radial extent.
Claim 8
Dependent Claim
63 words
The improvement of claim 1 wherein: the upstream faces of a plurality of blades are inclined at an angle to the direction of flow of the mixture through the chamber and to the tangent to the circular path described by the rotating blades, and wherein the inclination of the upstream faces of said blades decreases as their respective distances from the outlet increases.
References Cited (Backward Citations)
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US2997968A
Cited
US3035775A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |