Patent ID: 7228767

Claim:
A tool connecting device comprising: a shaft including a first end having an engaging hole formed therein for selectively receiving and for engaging with a hexagonal member of a spark plug and for driving said spark plug, and including a second end having a non-circular socket opening formed therein and having at least one flat surface formed therein and having an indention formed in said at least one flat surface of said shaft, a retaining member attached to said shaft, a tool member including a non-circular rotatable member selectively engaged with said non-circular socket opening of said shaft and having at least one curved surface formed therein for selectively engaging with said non-circular socket opening and said at least one flat surface of said shaft, to allow said tool member to be selectively tilted relative to said shaft to different angular position, and said tool member including a protrusion extended therefrom for selectively engaging with said socket opening of said shaft to solidly anchor said rotatable member of said tool member to said shaft and to prevent said tool member from being tilted relative to said shaft, said tool member including a peripheral depression formed therein and arranged for allowing said tool member to be slanted and tilted relative to said shaft to different angular position, said retaining member of said shaft being selectively engaged with said rotatable member of said tool member for preventing said rotatable member of said tool member from being disengaged from said shaft, a magnetic member disposed in said shaft for attracting said rotatable member of said tool member to said shaft, said shaft including an inner peripheral swelling extended radially and inwardly into said socket opening thereof to form a bore therein and to receive said magnetic member therein, a control ferrule slidably engaged onto said shaft and selectively engageable with said tool member to selectively retain said tool member in line with said shaft, said control ferrule including a first peripheral recess formed therein for selectively receiving and engaging with said retaining member and to selectively retain said control ferrule in engagement with said tool member, said control ferrule including at least one second peripheral recess formed therein for selectively receiving and engaging with said retaining member and to selectively retain said control ferrule in disengagement from said tool member, and a spring-biased projection attached to said tool member for engaging with said indention of said shaft and for anchoring said rotatable member of said tool member to said shaft, said spring-biased projection being extended out from said at least one curved surface of said tool member for engaging with said at least one flat surface of said shaft, and said shaft including an indention formed therein for engaging with said spring-biased projection of said tool member.