Automatic safety feed system for liquids

Claim 2

A self-protective safety feed system for supplying liquid on demand from a storage tank, and comprising; a powered motor driven pump means, a liquid holding means receiving liquid through a supply pipe forced from the storage tank by said pump means, a normally shut and power opened safety inlet valve in and controlling liquid flow through said supply pipe, a valve controlled liquid flow outlet pipe from and dispensing liquid out of said liquid holding means, and a motor power and safety inlet valve power control means having a liquid level sensor in a chamber in open communication with the outlet pipe and responsive to depletion of liquid in said outlet pipe, the power control means being activated by a liquid level sensor in said liquid holding means to power the motor driven pump means so as to force liquid through the supply pipe and to power the safety inlet valve so as to open and thereby admit liquid into the said holding means until the first mentioned sensor deactivates the said power control means to stop the motor and close the valve.

Claim 3

The self-protective safety feed system as set forth in claim 1 and wherein the liquid holding means is a liquid accumulator.

Claim 4

The self-protective safety feed system as set forth in claim 1 and wherein the liquid holding means is a fluid pressure supply device with liquid volume reserve.

Claim 5

The self-protective safety feed system as set forth in claim 1 and wherein the liquid holding means is an elevated vessel.

Claim 6

The self-protective safety feed system as set forth in claim 1, wherein the liquid holding means is an elevated vessel, and wherein the power control means includes low and high level liquid sensors within said vessel, the former to activate the inlet valve and motor driven pump means and the latter to deactivate the said inlet valve and motor driven pump means.

Claim 7

A self-protective safety feed system for supplying liquid on demand from a storage tank, and comprising; a powered motor driven pump means, liquid holding means in the form of an elevated vessel receiving liquid through a supply pipe forced from the storage tank by said pump means, a normally shut and power opened safety inlet valve in and controlling liquid flow through said supply pipe, a valve controlled liquid flow outlet pipe from and dispensing liquid out of said liquiD holding means, a motor power and safety inlet valve power control means having a sensor means in said liquid holding means and responsive to depletion of liquid therein and activated to power the motor driven pump means so as to force liquid through the supply pipe and to power the safety inlet valve to open and thereby admit liquid into the said holding means until the said sensor means deactivates the said last mentioned control means to stop the motor and close the valve, and including a liquid flow outlet safety means responsive to excessive flow in said outlet from the holding means and deactivating the motor and valve.

Claim 8

A self-protective safety feed system for supplying liquid on demand from a storage tank, and comprising; a powered motor driven pump means, liquid holding means in the form of an elevated vessel receiving liquid through a supply pipe forced from the storage tank by said pump means, a normally shut and power opened safety inlet valve in and controlling liquid flow through said supply pipe, a valve controlled liquid flow outlet pipe from and dispensing liquid out of said liquiD holding means, a motor power and safety inlet valve power control means having a sensor means in said liquid holding means and responsive to depletion of liquid therein and activated to power the motor driven pump means so as to force liquid through the supply pipe and to power the safety inlet valve to open and thereby admit liquid into the said holding means until the said sensor means deactivates the said last mentioned control means to stop the motor and close the valve, and including a liquid flow outlet safety means responsive to excessive flow in said outlet from the holding means and deactivating the motor and valve.

Claim 9

The self-protective safety feed system as set forth in claim 6, including a liquid flow outlet safety means comprising a float operated control deactivating the motor and safety inlet valve responsive to excessive flow depleting a normal level therein.

Claim 10

The self-protective safety feed system as set forth in claim 6, including a liquid overflow safety means responsive to flooding of the said vessel and deactivating the motor.

Claim 11

The self-protective safety feed system as set forth in claim 6, including a normally open vent and shut-off valve therefor closed by flooding of liquid to an excessively high level within said closed vessel.

Claim 12

The self-protective safety feed system as set forth in claim 6, wherein the liquid holding means is a closed vessel elevated with respect to placement of the storage tank, wherein a checkvalve is in the supply pipe immediately above the storage tank and faced to prevent return of liquid to said tank, wherein the sensor means includes low and high level liquid sensing means within said vessel, the former to activate the said power control means and the latter to deactivate the said power control means, a liquid flow outlet safety means comprising a float operated control deactivating the motor and safety inlet valve responsive to excessive flow depleting a normal level therein, a liquid overflow safety means comprising a float operated control deactivating the motor responsive to flooding of the said vessel, and a normally open vent and shut-off valve therefor closed by flooding of liquid to an excessively high level within said closed vessel.

Claim 13

An electrically energized self-protective safety feed system for supply of liquid on demand from a storage tank, and comprising; an electrically powered motor driven pump means, a liquid holding means receiving liquid through a supply pipe forced from the storage tank by said pump means, a normally shut solenoid opened safety inlet valve in and controlling liquid flow through said supply pipe, a valve controlled liquid flow outlet pipe from and dispensing liquid out of said liquid holding means, and an electrical power supplied motor power and safety inlet valve power control means having a liquid level sensor in a chamber in open communication with the outlet pipe and responsive to depletion of liquid in said outlet pipe, the power control means being activated by a liquid level sensor in said liquid holding means to electrically power the motor driven pump means so as to force liquid through the supply pipe and to electrically power the safety inlet valve so as to open and thereby admit liquid into the said holding means until the first mentioned sensor deactivates the said power control means to stop the motor and close the valve.

Claim 14

An electrically energized self-protective safety feed system for supply of liquid on demand from a storage tank, and comprising; an electrically powered motor driven pump means, a liquid holding means receiving liquid through a supply pipe forced from the storage tank by said pump means, a normally shut solenoid opened safety inlet valve in and controlling liquid flow through said supply pipe, a valve controlled liquid flow outlet pipe from and dispensing liquid out of said liquid holding means, and an electrical power supplied motor power and safety inlet valve power control means having a liquid level sensor in a chamber in open communication with the outlet pipe and responsive to depletion of liquid in said outlet pipe, the power control means being activated by a liquid level sensor in said liquid holding means to electrically power the motor driven pump means so as to force liquid through the supply pipe and to electrically power the safety inlet valve so as to open and thereby admit liquid into the said holding means until the first mentioned sensor deactivates the said power control means to stop the motor and close the valve.

Claim 15

The electrically powered self-protective safety feed system as set forth in claim 11, wherein the liquid holding means is an elevated vessel, and wherein the power control means includes low and high level liquid sensing switch operating means within said vessel, the former closing a switch to electrically activate the said power control means and the latter opening a switch to deactivate the said power control means.

Claim 16

An electrically energized self-protective safety feed system for supply of liquid on demand from a storage tank, and comprising; an electrically powered motor driven pump means, a liquid holding means In the form of an elevated vessel receiving liquid through a supply pipe forced from the storage tank by said pump means, a normally shut solenoid opened safety inlet valve in and controlling liquid flow through said supply pipe, a valve controlled liquid flow outlet pipe from and dispensing liquid out of said liquid holding means, an electrical power supplied motor power and safety inlet valve power control means having a sensor means in said liquid holding means and responsive to depletion of liquid therein and activated to electrically power the motor driven pump means so as to force liquid through the supply pipe and to electrically power the safety inlet valve to open and thereby admit liquid into the said holding means until the said sensor means deactivates the said last mentioned control means to stop the motor and close the valve, and including a liquid flow outlet safety means comprising a float operated control switch electrically deactivating the said motor and safety inlet valve responsive to excessive flow depleting a normal level therein.

Claim 17

An electrically energized self-protective safety feed system for supply of liquid on demand from a storage tank, and comprising; an electrically powered motor driven pump means, a liquid holding means In the form of an elevated vessel receiving liquid through a supply pipe forced from the storage tank by said pump means, a normally shut solenoid opened safety inlet valve in and controlling liquid flow through said supply pipe, a valve controlled liquid flow outlet pipe from and dispensing liquid out of said liquid holding means, an electrical power supplied motor power and safety inlet valve power control means having a sensor means in said liquid holding means and responsive to depletion of liquid therein and activated to electrically power the motor driven pump means so as to force liquid through the supply pipe and to electrically power the safety inlet valve to open and thereby admit liquid into the said holding means until the said sensor means deactivates the said last mentioned control means to stop the motor and close the valve, and including a liquid flow outlet safety means comprising a float operated control switch electrically deactivating the said motor and safety inlet valve responsive to excessive flow depleting a normal level therein.

Claim 18

The electrically powered self-protective safety feed system as set forth in claim 13, including a liquid overflow safety means comprising a float operated control switch electrically deactivating the motor responsive to flooding of said vessel.

Claim 19

The electrically powered self-protective safety feed system as set forth in claim 13, wherein the liquid holding means is a closed vessel, wherein a checkvalve is in the supply pipe immediately above the storage tank and faced to prevent return of liquid to said tank, wherein the sensor means includes low and high level liquid sensing switch operating means within said vessel, the former closing a switch to electrically activate the said power control means and the latter opening a switch to deactivate the said power control means, a liquid flow outlet safety means comprising a float operated control switch electrically deactivating the motor and safety inlet valve responsive to excessive flow depleting a normal level therein, a liquid overflow safety means comprising a float operated control switch electrically deactivating the motor responsive to flooding of the said vessel, and a normally open vent and shut-off valve therefor closed by flooding of liquid to an excessively high level within said closed vessel.

Claim 20

In combination, a multiplicity of self-protective safety feed systems for separately supplying liquid on demand from a common storage tank and powered motor driven pump means, and each feed system including; a liquid holding means receiving liquid through a supply pipe forced from the storage tank by said pump means, a normally shut and power opened safety inlet valve in and controlling liquid flow through said supply pipe, a valve controlled liquid flow outlet pipe from and dispensing liquid out of said liquid holding means, and motor power and safety inlet valve controlled means having a liquid level sensor in a chamber in open communication with the outlet pipe and responsive to depletion of liquid in said outlet pipe, the power control means being activated by a liquid level sensor in said liquid holding means to power the motor driven pump means so as to force liquid through the supply pipe and to power its safety inlet valve so as to open and thereby admit liquid into the said holding means until the first mentioned sensor deactivates the said last mentioned control means to stop the motor and close its valve.

Claim 21

In combination, a multiplicity of self-protective safety feed systems for separately supplying liquid on demand from a common storage tank and powered motor driven pump means, and each feed system including; a liquid holding means receiving liquid through a supply pipe forced from the storage tank by said pump means, a normally shut and power opened safety inlet valve in and controlling liquid flow through said supply pipe, a valve controlled liquid flow outlet pipe from and dispensing liquid out of said liquid holding means, and motor power and safety inlet valve controlled means having a liquid level sensor in a chamber in open communication with the outlet pipe and responsive to depletion of liquid in said outlet pipe, the power control means being activated by a liquid level sensor in said liquid holding means to power the motor driven pump means so as to force liquid through the supply pipe and to power its safety inlet valve so as to open and thereby admit liquid into the said holding means until the first mentioned sensor deactivates the said last mentioned control means to stop the motor and close its valve.

Claim 22

In combination, a multiplicity of self-protective safety feed systems for separately supplying liquid on demand from a common storage tank and powered motor driven pump means elevated at multilevels and each level fed with liquid from a common standpipe supplying liquid forced from the storage tank by said pump means, and each feed system including; a liquid holding means receiving liquid through a supply pipe forced from the storage tank by said pump means, a normally shut and power opened safety inlet valve in and controlling liquid floW through said supply pipe, a valve controlled liquid flow outlet pipe from and dispensing liquid out of said liquid holding means, motor power and safety inlet valve controlled means having a sensor means in said liquid holding means and responsive to depletion of liquid therein and activated to power the motor driven pump means so as to force liquid through the supply pipe and to power its safety inlet valve to open and thereby admit liquid into the said holding means until the sensor means deactivates the said last mentioned control means to stop the motor and close its valve, the supply pipes of each safety feed system extending laterally from said standpipe, and there being an upwardly faced checkvalve in said standpipe immediately above the storage tank and immediately above said laterally extending supply pipe at each level so as to prevent return of liquid through said standpipe and to said tank.

Claim 23

In combination, a multiplicity of self-protective safety feed systems for separately supplying liquid on demand from a common storage tank and powered motor driven pump means elevated at multilevels and each level fed with liquid from a common standpipe supplying liquid forced from the storage tank by said pump means, and each feed system including; a liquid holding means receiving liquid through a supply pipe forced from the storage tank by said pump means, a normally shut and power opened safety inlet valve in and controlling liquid floW through said supply pipe, a valve controlled liquid flow outlet pipe from and dispensing liquid out of said liquid holding means, motor power and safety inlet valve controlled means having a sensor means in said liquid holding means and responsive to depletion of liquid therein and activated to power the motor driven pump means so as to force liquid through the supply pipe and to power its safety inlet valve to open and thereby admit liquid into the said holding means until the sensor means deactivates the said last mentioned control means to stop the motor and close its valve, the supply pipes of each safety feed system extending laterally from said standpipe, and there being an upwardly faced checkvalve in said standpipe immediately above the storage tank and immediately above said laterally extending supply pipe at each level so as to prevent return of liquid through said standpipe and to said tank.

Claim 24

The combined multiplicity of self-protective safety feed systems as set forth in claim 17, wherein an electrically powered relay starts and stops the pump motor, and wherein the sensor means includes low and high level liquid sensing switch operating means within said holding means and a parallel electrical circuit therefrom to said relay to start and stop the motor. 19 The combined multiplicity of self-protective safety feed systems as set forth in claim 17, wherein an electrically powered relay starts and stops the pump motor, and wherein a liquid overflow safety means comprising a float operated control switch electrically in series with said relay deactivates the same responsive to flooding of the holding means to stop the motor.

Claim 25

The combined multiplicity of self-protective safety feed systems as set forth in claim 17, wherein an electrically powered relay starts and stops the pump motor, wherein the sensor means includes low and high level liquid sensing switch operating means within said holding means and with a parallel electrical circuit therefrom to said relay to start and stop the motor, and wherein a liquid overflow safety means comprising a float operated control switch electrically in series with said relay deactivates the same responsive to flooding of the holding means to stop the motor.

Claim 26

The combined multiplicity of self-protective safety feed systems as set forth in claim 17, wherein an electrically powered relay starts and stops the pump motor, wherein the sensor means includes low and high level liquid sensing switch operating means within said holding means and with a parallel electrical circuit therefrom to said relay to start and stop the motor, and wherein a liquid overflow safety means comprising a float operated control switch electrically in series with said relay deactivates the same responsive to flooding of the holding means to stop the motor.