Abstract: A vaporizer system may include a vaporizer device and a vaporizer accessory configured to couple to the vaporizer device. The vaporizer accessory may include a sensor configured to continuously and passively monitor a biomarker of the user. The biomarker includes a concentration of carbon monoxide in the user's blood. Related systems and methods are also described.

Abstract: A novel door assembly is provided for allowing selective access between adjacent fuel cells of an aircraft. The assembly includes a frame which is adapted to be mounted to the fuel cell rib between adjacent fuel cells. A door is provided for rotational engagement with the frame to thereby provide a sealable throughway between adjacent fuel cells. The door includes first and second handles mounted to respective first and second sides thereof. A latch is mounted to the frame for engaging the second handle to prevent clockwise rotation of the door and thereby latch the door in the sealed positioned. A novel leakage assembly is provided which is responsive to a first predetermined displacement of either the first or second handle to unlatch the door and is responsive to a second predetermined displacement of either the first or second handle to rotate the door in the clockwise direction to free the door from the frame. Accordingly, the door may be latched or unlatched from either side thereof.

Abstract: An improvement to close an opening formed in the leading edge of an airfoil when a slat is moved to its deployed position. The track which deploys the slat has a downward component of motion which leaves an opening in the wing leading edge that can cause premature stall in the opening is not closed. To close this opening, there is a door which is mounted about an axis of rotation that is positioned in a vertical plane generally parallel to the movement of the track. Further, the axis of rotation is slanted so that the door moves upwardly, rearwardly and laterally to its retracted position so as to permit the track to be retracted, and when the track is extended, a spring moves the door into its deployed position to close the opening.