Abstract: A tack-off assembly (10) includes a support structure (12) defining a path (14) extending therethrough. A rotatable axle (16) is mounted from the support structure (12) defining an axis A. A feather duster assembly (18) is mounted on the axle (16) for removing dust particles by contacting the surface of an object (20) traveling along the path (14). The feathers (98) of the feather duster assembly (18) are mounted on a plurality of hubs (24) which are expandable for selectively expanding and contracting the length of the feather assembly (18) along the axis A.

Abstract: A fire-extinguishant system includes a source of extinguishant, such as carbon dioxide, a fusible length of plastic tubing, such as one-half-inch-outside-diameter polyethylene tubing, with the end closed, and a conduit and valve system for connecting the extinguishant source to the fusible tubing. The valving system pressurizes the fusible tubing at a low pressure, and this low-pressure signal is coupled to a pilot input port in the valve system. When this low-pressure pilot signal is interrupted, the piloted valve switches to supply extinguishant at full pressure through the fusible tubing. If the fusible tubing has been melted, such as by a fire, the extinguishant exits through the melted portion to extinguish the fire. The low-pressure pilot signal can, however, be interrupted manually by the valve system. In this case, the full-pressure extinguishant supply to the fusible tube ruptures the tube and releases extinguishant. This provides a manual extinguishant control for the system.