B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
226/63
B65B 3/00 (2006.01) B67D 7/54 (2010.01)
Patent
CA 1095475
ABSTRACT OF THE DISCLOSURE A gasoline dispensing nozzle which includes vapor recovery means and is magnetically held in place to the fueling filler neck of the vehicle, while at the same time providing for a tight seal at the nozzle filler neck interface. This permits the recovery of gasoline vapors issuing from the vehicle fuel tank during the refueling process. At the filler end of the nozzle there is a switchable permanent magnet to latch, support and hold the nozzle to the vehicle fillpipe. When turned on, the magnet will direct its magnetic flux through the object to which the nozzle is held, that is, the filler neck surface with which the nozzle is in contact. To remove the nozzle when refueling is com- pleted, the magnetic flux is switched in a different direction to a metal element known as a keeper. This releases the magnetic force of attrac- tion and unlocks the nozzle, thus permitting its removal from the fill- pipe. The switching can be accomplished either electrically or mechanical ly. A pressure sensing mechanism is provided at the outer face of the magnet so that when a suitable seal is made between the nozzle magnet and the filler neck surface, a signal is provided via the pressure sensor that the seal has been made. Then the fuel valve may be opened on demand or automatically closed when there is a loss of pressure signal (i.e., the seal is broken), whereupon flow is not permitted. The nozzle is designed to have a forward portion which is swiveled or pivoted about an axis on the rear portion of the nozzle. This forward portion or torque arm is relatively short in length and provides a minimum amount of moment arm with respect to the axis so that minimum peel forces are generated by the weight of nozzle and hoses which permits smaller size magnets to be utilized.
309271
Exxon Research And Engineering Company
Swabey Ogilvy Renault
LandOfFree
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