Electrical unit for fuel delivery pump

Claim 2

For use in fuel delivery apparatus having electrically operated means operable for conditioning the apparatus for dispensing fluid, a first resettable register for registering the amount of fluid dispensed having a reset shaft rotatable for resetting the register between fluid deliveries, and a second register operable by electrical pulses for registering the amount of fluid dispensed; an electrical control unit comprising an explosion-proof housing; a rotatable drive shaft extending through the housing for connection to the reset shaft for resetting said first register, an electrical reset mechanism mounted within the housing having an electrical reset motor for rotating the drive shaft and switch means for operating the reset motor and said electrically operated means; a rotatable control shaft extending through the housing for operating the switch means; an electrical rotary pulse generator mounted within said housing; at least one rotatable pulse generator operating shaft parallel to the drive shaft extending through the housing and connected for operating the pulse generator for generating an electrical pulse for each predetermined incremental amount of fuel delivered; and electrical lead means extending through the explosion-proof housing for connecting the pulse generator for operating the second register, for supplying power to the reset motor and for connecting said switch means to said electrically operated means.

Claim 3

An electrical control unit according to claim 1 wherein the electrical lead means is provided by a single electrical conduit extending through the explosion-proof housing.

Claim 4

An electrical control unit according to claim 1 wherein the second auxiliary register is operable by electrical pulses for separately registering the volume and cost amounts of fuel dispensed and wherein the electrical pulse generator comprises a first rotary pulser connected to be rotated by Said one operating shaft for generating an electrical pulse for each predetermined incremental volume amount of fuel delivered and a second rotary pulser, wherein the control unit comprises a second rotatable operating shaft extending through the housing parallel to the drive shaft and connected for operating the second pulser for generating an electrical pulse for each predetermined incremental cost amount of fuel delivered, and wherein the lead means provides for connecting the first and second pulsers to the auxiliary second register for separately registering the volume and cost amounts of fuel delivered.

Claim 5

A control unit for fuel dispensing apparatus comprising an explosion-proof housing; a rotatable output drive shaft, a rotatable control shaft and at least one rotatable input drive shaft extending through the housing with their axes extending generally parallel; a drive mechanism mounted within said housing comprising an electrical drive motor for rotating the output drive shaft and switch means connected to be operated by the control shaft for energizing the drive motor, a rotary pulse generator mounted within said housing operable by said input drive shaft for generating pulses in accordance with the amount of fluid delivered by the fuel dispensing apparatus, and conduit means extending through the explosion-proof housing for providing electrical connections to said switch means and the pulse generator.

Claim 6

A control unit for fuel dispensing apparatus comprising an explosion-proof housing; a rotatable output drive shaft, a rotatable control shaft and at least one rotatable input drive shaft extending through the housing with their axes extending generally parallel; a drive mechanism mounted within said housing comprising an electrical drive motor for rotating the output drive shaft and switch means connected to be operated by the control shaft for energizing the drive motor, a rotary pulse generator mounted within said housing operable by said input drive shaft for generating pulses in accordance with the amount of fluid delivered by the fuel dispensing apparatus, and conduit means extending through the explosion-proof housing for providing electrical connections to said switch means and the pulse generator.

Claim 7

A control unit for fuel dispensing apparatus according to claim 4 comprising two of said rotatable input drive shafts and wherein the pulse generator comprises rotary volume and cost pulsers operable by said two input drive shafts respectively for generating separate pulse trains in accordance with the volume and cost amounts respectively of fuel delivered by the fuel dispensing apparatus.

Claim 8

For use in fuel delivery apparatus having electrically operated means operable for conditioning the apparatus for dispensing fluid, a first resettable register for registering the amount of fluid dispensed having a reset shaft rotatable for resetting the register between fluid deliveries, and a second register operable by electrical pulses for registering the amount of fluid dispensed; an electrical control unit comprising an explosion-proof housing; a rotatable drive shaft extending through the housing for connection to the reset shaft for resetting said first register, an electrical reset mechanism mounted within the housing having an electrical reset motor for rotating the drive shaft and switch means for operating the reset motor and said electrically operated means; a control shaft extending through the housing for operating the switch means; an electrical pulse generator mounted within said housing; at least one pulse generator operating shaft extending through the housing for operating the pulse generator for generating an electrical pulse for each predetermined incremental amount of fuel delivered; and electrical lead means extending through the explosion-proof housing for connecting the pulse generator for operating the second auxiliary register, for supplying power to the reset motor and for connecting said switch means to said electrically operated means, the pulse generator comprising a rotary pulser operable by said one operating shaft for generating an electrical pulse for each predetermined incremental amount of fuel delivered, and pulser resetting means operable by the drive shaft for angularly resetting the rotary pulser when the drive shaft is rotated for resetting said first register.

Claim 9

For use in fuel delivery apparatus having electrically operated means operable for conditioning the apparatus for dispensing fluid, a first resettable register for registering the amount of fluid dispensed having a reset shaft rotatable for resetting the register between fluid deliveries, and a second register operable by electrical pulses for registering the amount of fluid dispensed; an electrical control unit comprising an explosion-proof housing; a rotatable drive shaft extending through the housing for connection to the reset shaft for resetting said first register, an electrical reset mechanism mounted within the housing having an electrical reset motor for rotating the drive shaft and switch means for operating the reset motor and said electrically operated means; a control shaft extending through the housing for operating the switch means; an electrical pulse generator mounted within said housing; at least one pulse generator operating shaft extending through the housing for operating the pulse generator for generating an electrical pulse for each predetermined incremental amount of fuel delivered; and electrical lead means extending through the explosion-proof housing for connecting the pulse generator for operating the second auxiliary register, for supplying power to the reset motor and for connecting said switch means to said electrically operated means, the pulse generator comprising a rotary pulser operable by said one operating shaft for generating an electrical pulse for each predetermined incremental amount of fuel delivered, and pulser resetting means operable by the drive shaft for angularly resetting the rotary pulser when the drive shaft is rotated for resetting said first register.

Claim 10

An electrical control unit according to claim 6 wherein the pulser resetting means comprises a disengageable clutch interconnecting said one operating shaft and the rotary pulser comprising a pair of coaxial gears, a pivotal lever, an idler gear mounted on the lever for selective engagement with coaxial gears, and a cam on said drive shaft engageable with the lever for selectively withdrawing the idler gear from engagement with the coaxial gears.

Claim 11

An electRical control unit according to claim 6 wherein the rotary pulser comprises a pulser switch and a rotary switch actuator operable to actuate the pulser switch a plurality of times for generating a corresponding plurality of pulses for each revolution of the rotary switch actuator, and wherein the pulser resetting means provides for angularly resetting the rotary actuator to its nearest reset position without additional actuation of the pulser switch.

Claim 12

An electrical control unit according to claim 8 wherein the pulser resetting means comprises a multi-tooth reset cam connected for rotation with the rotary switch actuator, a reset lever pivotally mounted for engagement with the reset cam for resetting the rotary actuator, and a reset cam on said drive shaft engageable with the reset lever for pivoting the reset lever into engagement with the reset cam when the drive shaft is rotated for resetting said first register.

Claim 13

A control unit for fuel dispensing apparatus comprising an explosion-proof housing; an output drive shaft, a control shaft and at least one input drive shaft extending through the housing; a drive mechanism mounted within said housing comprising an electrical drive motor for rotating the output drive shaft and switch means operable by the control shaft for energizing the drive motor, a pulse generator mounted within said housing operable by said input drive shaft for generating pulses in accordance with the amount of fluid delivered by the fuel dispensing apparatus, and conduit means extending through the explosion-proof housing for providing connections to said switch means and the pulse generator, the pulse generator comprising a resettable pulser operable by said one input drive shaft for generating said pulses and a pulser reset mechanism operable by said output drive shaft for resetting the pulser.

Claim 14

A control unit for fuel dispensing apparatus comprising an explosion-proof housing; an output drive shaft, a control shaft and at least one input drive shaft extending through the housing; a drive mechanism mounted within said housing comprising an electrical drive motor for rotating the output drive shaft and switch means operable by the control shaft for energizing the drive motor, a pulse generator mounted within said housing operable by said input drive shaft for generating pulses in accordance with the amount of fluid delivered by the fuel dispensing apparatus, and conduit means extending through the explosion-proof housing for providing connections to said switch means and the pulse generator, the pulse generator comprising a resettable pulser operable by said one input drive shaft for generating said pulses and a pulser reset mechanism operable by said output drive shaft for resetting the pulser.

Claim 15

A control unit for fuel dispensing apparatus according to claim 10 wherein the pulser comprises a rotary pulse actuator rotatable by said one input drive shaft and wherein the pulser reset mechanism is operable for angularly resetting the rotary pulse actuator.

Claim 16

A control unit for fuel dispensing apparatus according to claim 11 wherein the pulser comprises a pulser switch operable by the rotary pulse actuator to generate a plurality of pulses for each revolution of said one input drive shaft, and wherein the pulser reset mechanism is operable to angularly reset the rotary pulse actuator to its nearest reset position without additional operation of the pulser switch.