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Oil filter crushing apparatus

Image Number 4 for United States Patent #5383397.

An oil filter crushing apparatus includes a frame on which is mounted a filter platform configured to receive a used oil filter for crushing. An air spring actuating device is secured within the frame, and a ram is secured to a lower end of the air spring. A control valve regulates the flow of a pressurized gas into the air spring which then forces the ram toward the filter platform to crush the filter. A safety pneumatic circuit prevents inadvertent actuation of the ram.

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