Abstract: A brush in which the individual bristles are arranged in clusters so that the bristles are parallel to one another and perpendicular to the brush body for improved gathering and aligning of hair without damage thereto. One embodiment also has a casing having a panel with a plurality of openings extending therethrough, a cradle member positioned within the casing carrying a plurality of elongate support members with thread-like monofilament bristles attached thereto. Each of the bristles extends into one of the openings in the panel in a close-fitting relationship. The embodiment also includes means to retract the bristles into the casing through the openings whereby the close fitting relationship between the openings and the monofilament bristles exert a scraping action to the bristles to clean them of any foreign matter adhering thereto.

Abstract: An eddy current coupled transducer and external electrical circuit are disclosed for use with a fluid actuator for detecting the relative position of the reciprocating member of the actuator. The transducer includes a fitting providing a fluid pressure seal whereby the transducer can be fitted to the actuator and communicate with its interior. The transducer detects the absolute position of the reciprocating member of the actuator by eddy current coupling. A change in the amplitude of the high frequency signal supplied to the transducer by the external electrical circuit occurs when the reciprocating member is in close proximity to the transducer. This change in amplitude is detected by the electrical circuit to provide an on-off switching signal for associated equipment in response to the position of the actuator reciprocating member.

Abstract: A method and apparatus for forming rows and columns of closely spaced micron sized holes in a thin foil, including a cylindrical member and means for rotating it. There are means for mounting a plurality of axially extending foil strips on the cylindrical member and means for moving said foil strips axially of the cylinder. There are a plurality of stationary lasers uniformly positioned in a single plane about the periphery of said cylindrical member and means for correlating movement of said cylindrical member, axial movement of the foil strips and the firing of said lasers so as to form holes as described in closely spaced rows and columns.