Trailer mounted portable lavatory

Abstract

A towed trailer mounted portable sanitary facility for use in the field by workmen that has a longer period between servicing due to large volume on-board fresh water and waste collection tanks, respective pumps and controls for operating the pumps associated with each of the tanks, and a rechargeable battery system for controlling the pumps so that the trailer can be maintained and operated for lengthy periods without the need for a service vehicle.

1 . A mobile sanitary system comprising:
 a wheeled flatbed trailer including means for connecting to a towing vehicle;   at least one toilet facility mounted to the flatbed trailer;   a combined fresh water and waste collection tank having separate portions for containing fresh water and collected waste mounted laterally across the underside of the flatbed trailer;   on-board electrically operated pump means for transferring fresh water from the fresh water portion of said tank to replenish the flush capacity of the toilet facility; and,   on-board circuit means including a rechargeable battery for controlling the pump means and for controlling the recharging of the battery.   
     
     
         2 . The mobile sanitary system of  claim 1  further comprising a bi-lateral stability means attached to the flatbed trailer for maintaining level operation of the toilet facility when in operation. 
     
     
         3 . The mobile sanitary system of  claim 1  further comprising a retractable stair access means located across the rear of the flatbed trailer. 
     
     
         4 . The mobile sanitary system of  claim 3 , wherein the retractable stair access means includes at least one safety rail and a locking mechanism to retain the stair in a stowed position. 
     
     
         5 . The mobile sanitary system of  claim 1 , wherein the on-board circuit means includes a multi-source electrical recharging circuit accommodating external 120 volt ac or 12 volt dc currents to recharge the on-board battery. 
     
     
         6 . The mobile sanitary system of  claim 1 , wherein the on-board circuit means can be operated by connecting to an external 120 volt ac source converted to 12 volts dc, a 12 volt dc vehicle output, and a generator producing either 120 volts ac converted to 12 volts dc or 12 volts dc. 
     
     
         7 . The mobile sanitary system of  claim 1  further comprising a fresh water reservoir for hand washing within the toilet facility that is capable of replenishment from the on-board pump means. 
     
     
         8 . The mobile sanitary system of  claim 1 , wherein the on-board pump means includes an individual fluid pump for each combined fresh water waste collection tank mounted to the flatbed trailer.