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Class Information
Number: 222/414
Name: Dispensing > With discharge assistant (e.g., impeller, pump, conveyer, movable trap chamber, etc.) > Rotary > Peripheral surface material contact
Description: Dispensers having the peripheral surface of the rotor in contact with the material to move the same, the material moving circumferentially of the rotor axis.

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
4234105 Hopper and feed wheel assembly for a fertilizer spreader Nov. 18, 1980
4231496 Food dispensing utensil Nov. 4, 1980
4173298 Rotary feed cup having a spacer and a pivoted seal Nov. 6, 1979
4171071 Metered feeder having a rotary groove and a cooperating scraper for difficult to meter solids Oct. 16, 1979
4154370 Device for powder metering May. 15, 1979
4131221 Planting and fertilizing apparatus Dec. 26, 1978
4090645 Powder metering system May. 23, 1978
4062653 Powder flow control device for growing Verneuil crystals Dec. 13, 1977
4024993 Toner-replenishing apparatus for use in dry process electrostatic copier May. 24, 1977
4019662 Feeder for coherent particulate material Apr. 26, 1977
4013196 Pneumatic dispensing apparatus for finely divided dry substances Mar. 22, 1977
3985098 Toner dispensing apparatus Oct. 12, 1976
3964429 Developer replenishment device for copying machines Jun. 22, 1976
3946910 Dry toner dispenser assembly for copying machine Mar. 30, 1976
3933428 Device for the sterilization of packaging material Jan. 20, 1976

1 2

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