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         Filters for small motors: apparatus 
          used to remove suspended particles from a gas or liquid. 
          Cover: piece of metal closing the filter. 
          Housing: metal casing protecting the filter. 
          Foam pad: a mass of spongy material used for filtering a liquid 
          or gas. 
          Filter: surface pierced with little holes. 
          Washer: round, thin metal part, hollow un the center. 
          Gasket: lining that seals a joint. 
          Filtering element: part through which liquid passed to be clean 
          of its impurities. 
          Pan: small container. 
          Cover: piece of metal closing the filter. 
          Wing nut: winged piece of metal, to be turned by thumb and finger. 
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