Patent ID: 7841501

Claim:
In combination, a nail advancement mechanism and a cover assembly for covering said nail advancement mechanism of a fastener-driving tool so as to prevent the accumulation of dust particles thereon, comprising: a nail advancement mechanism, adapted to be interposed between a fastener magazine and a driver blade assembly of the fastener-driving tool, and comprising structural components which effectively provide said nail advancement mechanism with predetermined external structural configurations and physical characteristics; and a cover, comprising a substantially semi-cylindrical, substantially hollow shell having a top wall portion and dependent side wall members, for covering said nail advancement mechanism of the fastener-driving tool so as to prevent the accumulation of dust particles thereon; wherein said cover is secured over said nail advancement mechanism of the fastener-driving tool as a result of the fabrication of said cover as a structural product which structurally conforms to said predetermined external structural configurations and physical characteristics of said structural components of said nail advancement mechanism and comprises at least one internally hollow recess defined within said substantially semi-cylindrical, substantially hollow shell for respectively accommodating said structural components, of said nail advancement mechanism of the fastener-driving tool, having said predetermined external structural configurations and physical characteristics.