Black Decker Inc.

Matthew Rosenthal

Justin Cooper

Oleksiy P Sergyeyenko

John Palermo

Joseph Beyer

The present invention is directed to a blowervac device having a grill that requires to distinct steps in securing the grill over a fan to activate a safety switch allowing power to the motor. The grill has an outer ring and a rotatable inner cover. The first step is simply to secure the grill over the fan. The second step requires the cover to be rotated, which activates an actuator for the safety switch, allowing power to be delivered to the motor and operation of the device. This two-step process reduces the likelihood if inadvertent operation of the device and reduces the chances of injury.

Blowervac safety grill

The present invention is directed to a string trimmer having a blower feature incorporated therein. The string trimmer has a cutting head for holding a spool with cutting line. The cutting line is rotated at high speed to cut grass and other vegetation. The cutting head also includes a fan for generating an airflow to act as a blower. The string trimmer can be operated in two modes. In a first mode, both the fan and the spool housing are engaged with the motor so that the rotation of the spool housing performs a cutting operation. In a second mode, the motor engages only the fan to blow air, and the spool housing is disengaged so no cutting operation is performed.

String trimmer with blower

A spool assembly includes a spool formed of a central section including a core wall containing a core and passages extending through the core wall, an upper flange located at an upper portion of the central section, a lower flange located at a lower portion of the central section, and a protrusion section integral with the central section and extending above the upper flange. The protrusion section includes a cut-out formed inside the protrusion section, the cut-out having a non-circular shape adapted to be securely engaged to a drive member of a motor.

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Baltimore, MD, United States of America

Matthew Rosenthal