Abstract: An apparatus (40) for applying marking compound to the tooth surfaces of a gear or pinion member (14). The apparatus comprises a brush (42) having a central shaft (82) and a plurality of bristles (44) emanating from the shaft (82) with the brush (42) being rotatable about an axis of rotation coincident with the shaft (82). The apparatus also includes a cover plate (49) and a marking compound manifold (48) adjacent to the brush (42) comprising an inlet (92) in a first side of the manifold (48), an inner distribution chamber (94) communicating with the inlet (92), and a plurality of outlets (96) in a second side of the manifold (48) communicating with the inner chamber (94), the outlets (96) facing the bristles (44) of the brush (42). The apparatus (40) further includes means (52, 54) to move the brush (42) and manifold (48) from a first position remote from the gear or pinion (14) to a second position wherein the bristles (44) engage the tooth surfaces of the gear or pinion (14).

Abstract: A suction stylet suited for use with an endotracheal tube. The stylet has a main body with a central passageway which extends along the length of the main body. The central passageway is in fluid communication with a suction source at one end and in fluid communication with an elongated suction stylet extension at an opposite end. The extension has a free end with a suction port or ports. The main body also includes a connector member for releasable attachment with an endotracheal tube. When connected, the stylet extension's free end is near the free end of the endotracheal tube. A vent arm extends off of the main body and includes a vent passageway that opens into the central passageway, preferably at an angle of 90.degree. or less. The vent arm extends toward the free end of the extension and features a vent port at its end that opens into the vent passageway. The vent port is positioned so as to be easily closed by a finger of an operator who is grasping the stylet with the same hand.