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US3735641A Expired / Lapsed US ⏱️ 0.0 years remaining

Diverting and sampling gate

Assignee: Viridian Inc Canada
•
Filing: 1970-10-05
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Granted: 1973-05-29
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Expires: 1990-10-05
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Abstract

Abstract A gate for diverting and/or sampling the entire flow of particulate material in an upright chute. The gate includes a gate means positioned to extend slidably from an inoperative position in which the gate means spans substantially none of the cross-sectional area of the upright chute means through an opening in a wall of the upright chute to an operative position in which the gate means spans the entire cross-sectional area of the upright chute. Not only is the chute easily constructed and operated, it permits taking a sample with greater confidence in the qualititative and quantitative analysis of the sample.

Inventors

  • 👤 W Bink
  • 👤 G Dempster

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 07:11
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/20

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 292 words
A diverting gate for diverting the vertically downward flow of particulate material comprising, in combination, substantially upright chute means having at least one wall in which is formed an opening, gate means inclined from the horizontal at an angle greater than the angle of repose of the material flowing through the upright chute and positioned to extend slidably from an inoperative position in which said gate means is outside said chute and spans none of the cross-sectional area of the upright chute means to an operative position in which said gate means is within said chute and spans the entire cross-sectional area of the upright chute means and thereby serves to divert the flow of particulate material from a vertically downward direction to a direction along the gate means and to said opening, said gate means having at least one upstanding wall mounted on a lower end thereof across the flow of material to stop the flow along the gate means, said gate means having a wall mounted on an upper end thereof and which, in co-operation with said one upstanding wall, forms a sample pocket for diverted material, a substantially air tight seal on said wall on the upper end of said gate means and disposed within the upright chute, said seal registering with the opening to minimize the loss of material from the chute when the gate means is in said inoperative position, second chute means in communication with said opening when said gate means is in the operative position and receiving diverted material, and actuating means for extending the gate means across the upright chute means to the operative position in order to divert the entire flow of material from the upright chute means to the second chute means.
Claim 2
Dependent Claim 292 words
A diverting gate for diverting the vertically downward flow of particulate material comprising, in combination, substantially upright chute means having at least one wall in which is formed an opening, gate means inclined from the horizontal at an angle greater than the angle of repose of the material flowing through the upright chute and positioned to extend slidably from an inoperative position in which said gate means is outside said chute and spans none of the cross-sectional area of the upright chute means to an operative position in which said gate means is within said chute and spans the entire cross-sectional area of the upright chute means and thereby serves to divert the flow of particulate material from a vertically downward direction to a direction along the gate means and to said opening, said gate means having at least one upstanding wall mounted on a lower end thereof across the flow of material to stop the flow along the gate means, said gate means having a wall mounted on an upper end thereof and which, in co-operation with said one upstanding wall, forms a sample pocket for diverted material, a substantially air tight seal on said wall on the upper end of said gate means and disposed within the upright chute, said seal registering with the opening to minimize the loss of material from the chute when the gate means is in said inoperative position, second chute means in communication with said opening when said gate means is in the operative position and receiving diverted material, and actuating means for extending the gate means across the upright chute means to the operative position in order to divert the entire flow of material from the upright chute means to the second chute means.
Claim 3
Dependent Claim 42 words
A diverting gate according to claim 1, wherein the substantially upright chute means includes a funnel upstream from the gate means to restrict the cross-sectional area of the flow of material to less than the cross-sectional area of the substantially upright chute.
Claim 4
Dependent Claim 70 words
A diverting gate according to claim 1 including at least one side wall mounted on an edge of the gate means parallel to the flow of material to prevent material flowing along the gate means from being lost between the gate means and the walls of the chute wherein said at least one side wall is mounted on an edge of the gate means parallel to the direction of flow.
Claim 5
Dependent Claim 17 words
A diverting gate according to claim 1 wherein the substantially upright chute means has a rectangular cross-section.
Claim 6
Dependent Claim 15 words
A diverting gate according to claim 1 wherein the actuating means is a pneumatic cylinder.

References Cited (Backward Citations)

US304259A Cited
US1521545A Cited
US2550240A Cited
US2893602A Cited
US3253470A Cited
US3457789A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-05-28 1976-11-27 1977-05-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-05-28 1980-11-27 1981-05-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-05-28 1984-11-27 1985-05-29 $7700.00 Window Closed / Lapsed

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