Liquid hand truck, liquid receptacle, combination liquid hand truck and receptacle, system and/or method for handling liquids

A combination liquid holding device and liquid receptacle, comprising:

• a liquid holding device, wherein the liquid holding device is configured for transportation in a same manner as a hand truck, comprising:
• a device body having an exterior surface and a base, the device body defining a body chamber configured to hold liquid therein;
• the device body defining a body opening in fluid communication with the body chamber, the device body is a tank such that the body chamber is a tank chamber configured to hold liquid therein, the body opening is a tank opening in fluid communication with the tank chamber;
• and the connector mechanism comprises an attachment bar secured to the tank in a spaced apart fashion from the exterior surface, the attachment bar defining an axis of rotation;
• and
• a plurality of wheels attached to the tank, the plurality of wheels configured to facilitate transporting the tank by allowing the plurality of wheels to roll on the supporting surface while moving the tank such that the tank can be moved in a same manner as a hand truck;
• and
• a liquid receptacle positioned on a supporting surface, comprising:
• a receptacle body defining a receptacle chamber configured to hold and store liquid;
• the receptacle body defining a receptacle opening;
• a connector mechanism located on at least one of the liquid holding device and the liquid receptacle which is configured to form a detachable positive connection therebetween, the connector mechanism being configured to only allow pivoting about an axis of rotation between the liquid holding device and the liquid receptacle while the liquid holding device is connected to the liquid receptacle via the connector mechanism, the liquid holding device may be rotated such that liquid tends to be biased for movement from the body chamber, through the body opening, through the receptacle opening, and into the receptacle chamber;
• the liquid receptacle having a receptacle bracket configured to detachably connect to the attachment bar, the liquid holding device being rotatable relative to the liquid receptacle about the axis of rotation when the receptacle bracket is connected to the attachment bar of the liquid holding device;
• wherein the attachment bar is on a same side of the tank as the tank opening;
• wherein the liquid holding device is positioned in a first, vertical position, the base is located on the supporting surface, the same side of the tank is angled relative to the supporting surface;
• the receptacle bracket having a free end which incorporates a ramp section and having a slot located between the ramp section and the liquid receptacle;
• the tank having a tapered shape such that when the liquid holding device is in the first, vertical position, a first area of the tank at the base, as measured in cross section parallel to the supporting surface, is greater than a second area of the tank at the opening, as measured in cross section parallel to the supporting surface;
• the tank and the plurality of wheels being configured such that when the liquid holding device is moved into the first vertical position after being moved as the hand truck with the edge of the base adjacent to the hand truck, the attachment bar rides along the ramp portion to facilitate driving the attachment bar into position in the slot;
• and
• wherein the liquid is waste oil.