Patent ID: 6943306

Claim:
An interlock mechanism suitable for use with a blower-vacuum device, comprising: a user-operable switch ( 30 ) having a first condition for activating a motor of said blower-vacuum device and a second condition for deactivating said motor; a latch ( 58 ) for engagement with a removable attachment of said blower-vacuum device; and a user-operable release button ( 57 ) for disengaging said removable attachment from said latch ( 58 ); wherein said switch ( 30 ) is operable to activate said motor only when said removable attachment is engaged with said latch ( 58 ), and said release button ( 57 ) is operable to disengage said removable attachment from said latch ( 58 ) only when said motor is deactivated; characterized in that: said first condition of said switch ( 30 ) comprises a first position of said switch for activating said motor at a first speed of operation and a second position of said switch for activating said motor at a second speed of operation.