Drive for a rotating chemical dispensing apparatus

Details Drive for a rotating chemical dispensing apparatus Drive for a rotating chemical dispensing apparatus

2007-08-17

2009-08-18

Wright, Giovanna C (Department: 3672)

Wells

Above ground apparatus

With means for injecting solid or particulate material into...

C166S070000, C166S310000

Reexamination Certificate

active

07575048

ABSTRACT:
A chemical dispensing apparatus includes a housing and a cartridge support within the housing. A rotating cartridge with chemical stick receptacles is rotatably supported about an axis of rotation by the cartridge support. An injection passage at the bottom of the housing permits chemical sticks to pass from the housing when one of the chemical stick receptacles is in a chemical dispensing position in axial alignment with the injection passage. A drive system rotates the rotating cartridge. The drive system includes a rotational stop biased into engagement with the rotating cartridge, and a pneumatic cylinder having first and second ends. The first end is stationary at a point off-axis from the axis of rotation of the cartridge. The second end has an engagement member, such that as the pneumatic cylinder extends, the engagement member applies a force to one of the chemical stick receptacles to selectively rotate the rotating cartridge.

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