Locking fuel pump dispenser
First Claim
Patent Images
1. A locking fuel pump fuel dispenser nozzle having:
- a nozzle connected to a fuel pump and having an elongated spout for insertion into a vehicle filler tube having an annular raised surface therein, said nozzle having a manually actuating valve for controlling the flow of fuel from said fuel pump through said nozzle into said vehicle filler tube, the improvement comprising;
a locking mechanism for locking said nozzle spout in said filler tube when filling a vehicle fuel tank, said locking mechanism having at least one locking wedge adapted to extend between an unlocked position and a locked position and a locking wedge activating diaphragm mounted in said nozzle and coupled to said locking wedge to move said locking wedge from an unlocked to a locked position upon fluid pressure being applied thereto and means for holding said wedge in a locked position when fuel flow is cut off until released whereby a fuel dispenser nozzle spout locks into a filler tube whenever fuel is flowing through said nozzle into said vehicle filler tube and fuel tank and immediately after the fuel flow ceases.
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Abstract
A locking fuel pump dispenser nozzle has a valved nozzle connected to a pressurized fuel supply and has an elongated spout for insertion into a vehicle filler tube of the type having an annular raised surface therein. The nozzle has a manually actuating valve for controlling the flow of fuel from the pressurized fuel supply through the nozzle into the vehicle filler tube and vehicle fuel tank. The improvement includes a locking mechanism for locking the nozzle spout in the filler tube when filling a vehicle fuel tank.
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Citations
15 Claims
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1. A locking fuel pump fuel dispenser nozzle having:
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a nozzle connected to a fuel pump and having an elongated spout for insertion into a vehicle filler tube having an annular raised surface therein, said nozzle having a manually actuating valve for controlling the flow of fuel from said fuel pump through said nozzle into said vehicle filler tube, the improvement comprising; a locking mechanism for locking said nozzle spout in said filler tube when filling a vehicle fuel tank, said locking mechanism having at least one locking wedge adapted to extend between an unlocked position and a locked position and a locking wedge activating diaphragm mounted in said nozzle and coupled to said locking wedge to move said locking wedge from an unlocked to a locked position upon fluid pressure being applied thereto and means for holding said wedge in a locked position when fuel flow is cut off until released whereby a fuel dispenser nozzle spout locks into a filler tube whenever fuel is flowing through said nozzle into said vehicle filler tube and fuel tank and immediately after the fuel flow ceases. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A locking fuel pump fuel dispenser nozzle having:
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a nozzle having an elongated spout for insertion into a vehicle filler tube having an annular raised surface therein, said nozzle having a manually actuating valve for controlling the flow of fuel into said vehicle filler tube and fuel tank, the improvement comprising; a locking mechanism for locking said nozzle spout in said filler tube when filling a vehicle fuel tank, said locking mechanism having at least one radially extending locking wedge adapted to extend from an unlocked position to an extended locked position and a locking wedge activating diaphragm mounted in said nozzle and coupled to said locking wedge to move said wedge from an unlocked to a locked position upon fluid pressure being applied thereto; and ratchet means having a ratchet wheel coupled to said diaphragm for rotating a locking wheel having a locking slide thereon to cause said locking slide to alternately engage a slotted locking sleeve locked or unlocked slot whenever fuel is applied to said diaphragm to thereby position said locking wheel and said locking wedges in a locked position when said fuel pressure is released from said diaphragm whereby a fuel dispenser nozzle spout locks into a vehicle filler tube whenever fuel is being pumped into said vehicle filler tube and fuel tank by applying fluid pressure to said diaphragm in said nozzle and remains locked in said filler tube upon completion of fueling.
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Specification