Fuel dispensing arrangement

Claim 2

In a fuel dispensing arrangement having dispenser means with electrically driven pump means for delivering fuel, control means located remotely from said dispenser means and operable by a supervisor for selectively enabling fuel delivery from said dispenser means; and relay means having contacts switchable among a plurality of conditions, said relay means being connected with said control means for responding thereto by switching to a first condition in which contacts are connected to enable energization of said pump means in preparation for fuel delivery from said dispenser means and connected with said dispenser means for responding thereto by switching to a second condition in which contacts are connected for energizing said pump means for delivering fuel from said dispenser means and to a third condition in which contacts are connected for de-energizing said pump means on termination of fuel delivery from said dispenser means and for precluding energization of said pump means until said relay means are returned to said first condition by operation of said control means; the improvement comprising warning means located at said control means and operatively connected with said relay means for signaling to a supervisor that said relay means is in said third condition whereby the attention of the supervisor is directed to the termination of fuel delivery from said dispenser means.

Claim 3

An arrangement according to claim 1 wherein said warning means is operatively connected with said relay means for interrupting signaling upon switching of said relay means to said first state.

Claim 4

An arrangement according to claim 1 wherein said warning means comprises audible signal means for generating sound in response to switching of said relay means to said third state.

Claim 5

An arrangement according to claim 1 wherein said warning means comprises electrical lamp means for visually indicating the switching of said relay means from said third state to said first state.

Claim 6

An arrangement according to claim 1 further comprising emergency stop means located at said control means and operatively connected to said relay means for selectively switching said relay means to said third state whereby a supervisor may selectively preclude fuel delivery from said dispenser in the event of fire and the like.

Claim 7

In a fuel dispensing arrangement having dispenser means with electrically driven pump means for delivering fuel, control means located remotely from said dispenser means and operable by a supervisor for selectively enabling fuel delivery from said dispenser means; and relay means having contacts switchable among a plurality of conditions, said relay means being connected with said control means for responding thereto by switching to a first condition in which contacts are connected to enable energization of said pump means in preparation for fuel delivery from said dispenser means and connected with said dispenser means for responding thereto by switching to a second condition in which contacts are connected for energizing said pump means for delivering fuel from said dispenser means and to a third condition in which contacts are connected for de-energizing said pump means on termination of fuel delivery from said dispenser means and for precluding energization of said pump means until said relay means are returned to said first condition by operation of said control means; the improvement comprising audible warning means located at said control means and operatively connected with said relay means for generating sound in response to switching of said relay means to said third condition and for interrupting generation of sound in response to switching of said relay means to said first condition whereby the attention of the supervisor is directed to the termination of fuel delivery from said dispenser means.

Claim 8

In a fuel dispensing arrangement having dispenser means with electrically driven pump means for delivering fuel, control means located remotely from said dispenser means and operable by a supervisor for selectively enabling fuel delivery from said dispenser means; and relay means having contacts switchable among a plurality of conditions, said relay means being connected with said control means for responding thereto by switching to a first condition in which contacts are connected to enable energization of said pump means in preparation for fuel delivery from said dispenser means and connected with said dispenser means for responding thereto by switching to a second condition in which contacts are connected for energizing said pump means for delivering fuel from said dispenser means and to a third condition in which contacts are connected for de-energizing said pump means on termination of fuel delivery from said dispenser means and for precluding energization of said pump means until said relay means are returned to said first condition by operation of said control means; the improvement comprising audible warning means located at said control means and operatively connected with said relay means for generating sound in response to switching of said relay means to said third condition and for interrupting generation of sound in response to switching of said relay means to said first condition whereby the attention of the supervisor is directed to the termination of fuel delivery from said dispenser means.

Claim 9

In a fuel dispensing arrangement having dispenser means with electrically driven pump means for delivering fuel, control means located remotely from said dispenser means and operable by a supervisor for selectively enabling fuel delivery from said dispenser means; and relay means having contacts switchable among a plurality of conditions, said relay means being connected with said control means for responding thereto by switching to a first condition in which contacts are connected to enable energization of said pump means in preparation for fuel delivery from said dispenser means and connected with said dispenser means for responding thereto by switching to a second condition in which contacts are connected for energizing said pump means for delivering fuel from said dispenser means and to a third condition in which contacts are connected for de-energizing said pump means on termination of fuel delivery from said dispenser means and for precluding energization of said pump means until said relay means are returned to said first condition by operation of said control means; the improvement comprising electrical lamp warning means located at said control means and operatively connected with said relay means for visually signaling to a supervisor that said relay means is in one of said second and third conditions and for interrupting such signaling upon switching of said relay means to said first condition.

Claim 10

In a fuel dispensing arrangement having dispenser means with electrically driven pump means for delivering fuel, control means located remotely from said dispenser means and operable by a supervisor for selectively enabling fuel delivery from said dispenser means; and relay means having contacts switchable among a plurality of conditions, said relay means being connected with said control means for responding thereto by switching to a first condition in which contacts are connected to enable energization of said pump means in preparation for fuel delivery from said dispenser means and connected with said dispenser means for responding thereto by switching to a second condition in which contacts are connected for energizing said pump means for delivering fuel from said dispenser means and to a third condition in which contacts are connected for de-energizing said pump means on termination of fuel delivery from said dispenser means and for precluding energization of said pump means until said relay means are returned to said first condition by operation of said control means; the improvement comprising electrical lamp warning means located at said control means and operatively connected with said relay means for visually signaling to a supervisor that said relay means is in one of said second and third conditions and for interrupting such signaling upon switching of said relay means to said first condition.

Claim 11

In a fuel dispensing arrangement having a plurality of dispenser means each with corresponding electrically driven pump means for delivering fuel; control means located remotely from said dispenser means and operable by a supervisor for selectively enabling fuel delivery from said dispenser means; and a plurality of relay means having contacts corresponding to said dispenser means and each being switchable among a plurality of conditions, each said relay means being connected with said control means for responding thereto by switching to a first condition in which contacts are connected to enable energization of a corresponding pump means in preparation for fuel delivery from a corresponding dispenser means and connected with said corresponding dispenser means for responding thereto by switching to a second condition in which contacts are connected for energizing said corresponding pump means for delivering fuel from said corresponding dispenser means and to a third condition in which contacts are connected for de-energizing said corresponding pump means on termination of fuel delivery from said corresponding dispenser means and for precluding energization of said pump means until said relay means are returned to said first condition by operation of said control means; the improvement comprising audible warning means operatively connected with said plurality of relay means for signaling to a supervisor that at least one of said relay means is in said third condition, and a plurality of visual warning means each operatively connected with a corresponding one of said relay means for signaling to a supervisor that said corresponding one relay means is in one of said second and third conditions.

Claim 12

In a fuel dispensing arrangement having a plurality of dispenser means each with corresponding electrically driven pump means for delivering fuel; control means located remotely from said dispenser means and operable by a supervisor for selectively enabling fuel delivery from said dispenser means; and a plurality of relay means having contacts corresponding to said dispenser means and each being switchable among a plurality of conditions, each said relay means being connected with said control means for responding thereto by switching to a first condition in which contacts are connected to enable energization of a corresponding pump means in preparation for fuel delivery from a corresponding dispenser means and connected with said corresponding dispenser means for responding thereto by switching to a second condition in which contacts are connected for energizing said corresponding pump means for delivering fuel from said corresponding dispenser means and to a third condition in which contacts are connected for de-energizing said corresponding pump means on termination of fuel delivery from said corresponding dispenser means and for precluding energization of said pump means until said relay means are returned to said first condition by operation of said control means; the improvement comprising audible warning means operatively connected with said plurality of relay means for signaling to a supervisor that at least one of said relay means is in said third condition, and a plurality of visual warning means each operatively connected with a corresponding one of said relay means for signaling to a supervisor that said corresponding one relay means is in one of said second and third conditions.