Patent 7322110 was granted and assigned to Alltrade Tools Llc on January, 2008 by the United States Patent and Trademark Office.
A knife has a blade that can be contained within a housing when not in use and extended outside the housing when used. Additional blades can be stored within the housing, and when desired, loaded onto a blade seat. A trigger actuator moves a blade seat carrying a blade between extended and retracted positions. The blade seat may be locked into a number of different positions.