Black Decker Inc.

Other

Robert R Morin

Gregg L Sheddy

Christian V Elder

Aris C Cleanthous

Christopher T King

James C Gabriel

Daryl S Meredith

Jeffrey P Grant

Barry E Plato

Dustin L DeMarr

Miter saw

The present invention is directed to a vacuum including a dust extraction system. The system includes a filter assembly, an airflow generation assembly, and valve assembly. The airflow generation assembly is configured to draw contaminated air toward the filter assembly and exhaust filtered air as a discharge stream. The filter assembly is configured to remove contaminants from the contaminated airflow by capturing particulate material suspended within the airflow. The valve assembly is configured to selectively direct filtered airflow into the filter assembly such that the filtered air stream cleans the filter.

Vacuum

A spark plug includes a body and a center electrode. The body includes a first end, a second end, an insulating portion and a shell portion. The shell portion includes an exterior threaded section, a nut section below the threaded section, an electrically conductive, axially elongated firing ring above the threaded section and terminating at an upper surface. The center electrode extends through the body and includes a terminal end and a firing end. The firing end extends beyond the second end of the body and includes a plurality of tines. Each tine includes a first section and a second section. The first section extends radially from the firing end. The second section extends axially toward the upper surface of the firing ring and terminates at a tip. The insulating portion electrically isolates the shell portion from the center electrode.

Spark plug with firing end having downward extending tines

Growing community of inventors

Hanover, MD, United States of America

Robert R Morin