Resources Contact Us Home
Aircraft toilet drain assembly

Image Number 2 for United States Patent #4086670.

This invention relates to an aircraft toilet drain assembly of the type utilizing a drain plug, intended to prevent a maintenance operator from failing to replace the drain plug at the completion of after-flight servicing. The assembly is installed at the end of an outlet tube from a toilet holding tank in a position adjacent an access opening in the aircraft, which is closed in flight by an access panel. The assembly includes an outlet nipple, secured to the outlet tube, and a releasable cover mountable on the end of the nipple. A handle mounted on the cover is selectively movable between an extended position in which it obstructs the access opening to prevent the access panel from being closed and a depressed condition in which the access panel can be closed. An interlock responsive to the presence of the drain plug in the nipple locks the handle in its extended position unless a drain plug is present. The toilet drain assembly thus ensures that the aircraft access panel cannot be closed and the aircraft cleared for flight, unless a drain plug has been installed.

  Recently Added Patents
Variety corn line KDC7040
Hydrogenolysis of ethyl acetate in alcohol separation processes
Algorithm for color corrected analog dimming in multi-color LED system
Automated measurement of concentration and/or amount in a biological sample
Apparatus and method for transmitting/receiving data in a communication system
Video stabilization
Avalanche photodiodes having accurate and reproductible amplification layer
  Randomly Featured Patents
Portable devices for providing acoustic source information, apparatuses for providing acoustic source information, and methods of providing acoustic source information
Adjustable optical mount with locking devices and methods
Dual element electrical contact and connector assembly utilizing same
Nucleic acid probes and methods for detecting Pneumocystis carinii
Mold closing unit for use in an injection molding machine for synthetic material
X-ray image reader
Dispersants and lubricating oil compositions containing same
Security link
Exhaust system for smokestack