Patent ID: 8240909

Claim:
A blender comprising: a base, a motor within the base, a blade assembly operable by the motor, a collar detachably couplable to the base, a jar supported by and detachably securable to the collar, and an interlock assembly in a region defined by the collar, the interlock assembly being configured to prevent operation of the blade assembly when the collar is positioned on the base but the jar is not secured to the collar and to prevent detachment of the jar from the collar when the jar is secured to the collar and the collar is secured to the base, wherein the interlock assembly comprises first and second interlocking members, the jar is couplable to the first interlocking member, the first interlocking member has a first position in which the second interlocking member is not movable relative to the collar, and the first interlocking member is rotatable to a second position in which the second interlocking member is movable relative to the collar when the jar is coupled to the first interlocking member.