Abstract A gasoline delivery pump with a resettable delivery register, a ticket printer mounted above the register operable for recording the amount of each fluid delivery and a two-phase drive unit having a first drive shaft connected to a register reset shaft for resetting the register to ''''0'''' prior to the commencement of each fuel delivery and a second drive shaft connected for operating the printer after the completion of each fluid delivery. The drive unit comprises an electrical drive subassembly adapted to be selectively mounted in an explosionproof housing in either of two reverse positions for selectively rotating the drive shafts in either direction of rotation for facilitating selectively mounting the drive unit on either side of the register.
For use in fluid delivery apparatus having a resettable delivery register with a reset shaft rotatable for resetting the register and an auxiliary apparatus with an auxiliary shaft rotatable for operating the auxiliary apparatus through an operating cycle thereof; a drive unit comprising a drive motor, a reset drive clutch having a rotary input driven by the drive motor and a rotary output for connection to the register reset shaft and engageable for resetting the register, an auxiliary drive clutch having a rotary input driven by the drive motor and a rotary output for connection to the auxiliary shaft and engageable for operating the auxiliary apparatus through its operating cycle, each of said clutches having a rotary clutch operating member rotatable with the rotary output of the clutch and adapted to be locked against rotation for disengaging the clutch, and a clutch operating mechanism for normally locking the clutch operating members against rotation and selectively operable for temporarily unlocking each clutch operating member for rotation through a predetermined angle thereof for selectively resetting the register and operating the auxiliary apparatus through its operating cycle.
Claim 2
Dependent Claim
184 words
For use in fluid delivery apparatus having a resettable delivery register with a reset shaft rotatable for resetting the register and an auxiliary apparatus with an auxiliary shaft rotatable for operating the auxiliary apparatus through an operating cycle thereof; a drive unit comprising a drive motor, a reset drive clutch having a rotary input driven by the drive motor and a rotary output for connection to the register reset shaft and engageable for resetting the register, an auxiliary drive clutch having a rotary input driven by the drive motor and a rotary output for connection to the auxiliary shaft and engageable for operating the auxiliary apparatus through its operating cycle, each of said clutches having a rotary clutch operating member rotatable with the rotary output of the clutch and adapted to be locked against rotation for disengaging the clutch, and a clutch operating mechanism for normally locking the clutch operating members against rotation and selectively operable for temporarily unlocking each clutch operating member for rotation through a predetermined angle thereof for selectively resetting the register and operating the auxiliary apparatus through its operating cycle.
Claim 3
Dependent Claim
98 words
A drive unit according to claim 1 wherein the clutch operating mechanism comprises reciprocable means operable between first and second operating positions thereof, the reciprocable means when operated from its first to its second operating position being operable for temporarily unlocking the reset drive clutch operating member for rotation through a first predetermined angle thereof for resetting the register and when operated from its second to its first operating position being operable for temporarily unlocking the auxiliary drive clutch operating member for rotation through a first predetermined angle thereof for operating the auxiliary apparatus through its operating cycle.
Claim 4
Dependent Claim
40 words
A drive unit according to claim 2 wherein the reciprocable means when operated from its second to its first operating position is operable for temporarily unlocking the reset drive clutch operatiNg member for rotation through a second predetermined angle thereof.
Claim 5
Dependent Claim
40 words
A drive unit according to claim 3 wherein the reciprocable means when operated from its first to its second operating position is operable for temporarily unlocking the auxiliary drive clutch operating member for rotation through a second predetermined angle thereof.
Claim 6
Dependent Claim
26 words
A drive unit according to claim 3 wherein said first and second predetermined angles of rotation of the reset drive clutch operating member total 360* .
Claim 7
Dependent Claim
87 words
A drive unit according to claim 2 wherein the drive motor is an electrical drive motor and further comprising switch means operable by the reciprocable means when operated to each operating position thereof for energizing the drive motor and first and second switch operators rotatable with the rotary outputs of the reset and auxiliary drive clutches respectively for operating the switch means for de-energizing the electrical motor at the completion of said first predetermined angles of rotation of the reset and auxiliary drive clutch operating members respectively.