Dental wrench

A dental wrench comprising:

• a frame member having a generally frusto-conical shape, said frame member defining an opening for receiving the housing of a turbine assembly of a dental handpiece and having a vertical bore in the upper end thereof coaxial with the central axis of said frame member;
• a shaft slideably and rotatively received within the bore of said frame member, said shaft having an upper end and a lower end,
• first engagement means on the lower end of said shaft for engaging a rotatable securing device;
• a generally cylindrical support member secured to the upper end of said shaft, said cylindrical support member having a diameter less than the largest diameter of said frame member;
• second engagement means on the upper end of said cylindrical support member for engaging a rotatable member;
• and
• interlocking means associated with said frame member and said support member for rotating said wrench as a unitary assembly, said interlocking means being operable in an engaged position wherein said frame member and said support member rotate as a unitary assembly but inoperable in a disengaged position wherein and said support member rotates independently of said frame member.

A wrench comprising:

• a frame member having a portion thereof adapted for gripping by an operator;
• a shaft slideably and rotatively received within said frame member;
• first engagement means on a first end of said shaft for engaging a first rotatable member;
• a support member secured to a second end of said shaft, said support member having a portion thereof adapted for gripping by an operator;
• second engagement means on said support member for engaging a second rotatable member;
• and
• interlocking means associated with said frame member and said support member,
• the grippable portion of said frame member and the grippable portion of said support member having different dimensions such that different torques can be applied through said first and second engagement means, and said interlocking means being operable in an engaged position wherein said frame member and said support member rotate as a unitary assembly but inoperable in a disengaged position wherein said support member rotates independently of said frame member.