Abstract: A computerized system for transacting the purchase and sale of consumer motor fuels between motor fuel merchants and retail consumers through software on a mobile or desktop connected device for periods in the future through the simultaneous execution of multi-party, multi-layered contingent transactions and pricing algorithms to ensure that all inter-related motor fuel merchant transactions are simultaneously transacted upon a retail consumer purchase execution. Motor fuels include refined products such as gasoline and diesel fuel, renewable fuels (e.g. ethanol, biodiesel), natural gas (including liquefied natural gas), jet fuel and electricity.

Abstract: A locking hinge mechanism (10) that includes a hinge (10a) comprising an articulated axle (28) rotatably attached to first and second members (22,24) such that the operation of the hinge mechanism (10a) causes the members (22,24 ) to controllably move in a first or opening direction and a second or closing direction. The hinge (10a) comprises a fixed locking member (36), and a movable locking member (46) coaxially disposed relative to the fixed locking member (36). A bias mechanism (48) is coupled to the movable locking member (46) that causes it to interlockably engage the fixed locking member (b 36) such that the hinge (10a) causes the first and second members (22, 24) to freely move in one direction. A disengagement mechanism (38, 40) is coupled to the movable locking member (46) to disengage it from the fixed locking member (36) so that the first and second members (22, 24) may freely move in either direction.