Pump controller

Claim 2

For use with a liquid pump having a discharge port connected to a liquid receiving receptacle; a pump controller comprising an arm for supporting said container in one end portion of said arm, means pivotally supporting said arm in its other end portion, resilient means urging said arm into upwardly swung position, a pump control switch having first and second cooperating components, said first switch component being carried on said arm, said second component being fixedly disposed above said arm and comprising a boss, said switch components being in closed relationship when said arm is in upward position, the bias of said resilient means being less than the combined gravitational force of the container and a predetermined volume of liquid whereby when such volume has been reached said arm will be swung downwardly causing switch opening with termination of liquid pumping action.

Claim 3

For use with a liquid pump having a discharge port connected to a liquid receiving receptacle; a pump controller comprising an arm for supporting said container in one end portion of said arm, means pivotally supporting said arm in its other end portion, resilient means urging said arm into upwardly swung position, a pump control switch having first and second cooperating components, said first switch component being carried on said arm, said second component being fixedly disposed above said arm and comprising a boss, said switch components being in closed relationship when said arm is in upward position, the bias of said resilient means being less than the combined gravitational force of the container and a predetermined volume of liquid whereby when such volume has been reached said arm will be swung downwardly causing switch opening with termination of liquid pumping action.

Claim 4

For use with a liquid pump having a discharge port connected to a liquid receiving receptacle; a pump controller comprising an arm for supporting said container in one end portion of said arm, means pivotally supporting said arm in its other end portion, resilient means urging said arm into upwardly swung position, a pump control switch having first and second cooperating components, said first switch component being carried on said arm, said second component being fixedly disposed above said arm and comprising a boss, said switch components being in closed relationship when said arm is in upward position, the bias of said resilient means being less than the combined gravitational force of the container and a predetermined volume of liquid whereby when such volume has been reached said arm will be swung downwardly causing switch opening with termination of liquid pumping action.

Claim 5

For use with a liquid pump having a discharge port connected to a liquid receiving receptacle; a pump controller comprising an arm for supporting said container in one end portion of said arm, means pivotally supporting said arm in its other end portion, resilient means urging said arm into upwardly swung position, a pump control switch having cooperating components, one of said switch components being carried on said arm, said switch being closed when said arm is in upward position, the bias of said resilient means being less than the combined gravitational force of the container and a predetermined volume of liquid whereby when such volume has been reached said arm will be swung downwardly causing switch opening with termination of liquid pumping action, latch means engageable with said arm when the latter is in downwardly swung position to prevent premature upward swing upon removal of the container with the predetermined volume of liquid, said latch means comprising a plate cam having a peripheral operating surface, a shaft, means journalling said shaft, and said plate cam being eccentrically mounted on said shaft for rocking of said plate cam therewith.

Claim 6

For use with a liquid pump having a discharge port connected to a liquid receiving receptacle; a pump controller comprising an arm for supporting said container in one end portion of said arm, means pivotally supporting said arm in its other end portion, resilient means urging said arm into upwardly swung position, a pump control switch having cooperating components, one of said switch components being carried on said arm, said switch being closed when said arm is in upward position, the bias of said resilient means being less than the combined gravitational force of the container and a predetermined volume of liquid whereby when such volume has been reached said arm will be swung downwardly causing switch opening with termination of liquid pumping action, latch means engageable with said arm when the latter is in downwardly swung position to prevent premature upward swing upon removal of the container with the predetermined volume of liquid, said latch means comprising a plate cam having a peripheral operating surface, a shaft, means journalling said shaft, and said plate cam being eccentrically mounted on said shaft for rocking of said plate cam therewith.

Claim 7

For use with a liquid pump having a discharge port connected to a liquid receiving receptacle; a pump controller as defined in claim 2 and further characterized by a biasing member engaged to said plate cam for urging same into rocked condition for preventing upward swinging of said arm when the latter is downwardly swung, said cam having detent ears for restricting the rocking of said cam in either direction.

Claim 8

For use with a liquid pump having a discharge port connected to a liquid receiving receptacle; a pump controller as defined in claim 2 and further characterized by a control member mounted on said shaft for effecting manual rotation thereof to release same from arm-locking relationship.

Claim 9

For use with a liquid pump having a discharge port connected to a liquid receiving receptacle; a pump controller comprising an arm for supporting said container in one end portion of said arm, means pivotally supporting said arm in its other end portion, resilient means urging same arm into upwardly swung position, a pump control switch having cooperating components, one of said switch components being carried on said arm, said switch being closed when said arm is in upwardly position, the bias of said resilient means being less than the combined gravitational force of the container and a predetermined volume of liquid whereby when such volume has been reached said arm will be swung downwardly causing switch opening with termination of liquid pumping action, detent surface means provided upwardly of said arm, a latch member disposed between said detent surface means and said arm and engageable therewith, means rockably mounting said latch member for rotation about an axis parallel to said detent surface means for movement between switch-closed position and switch-open condition, said arm resilient means overcoming said urging means prior to reception of a predetermined volume of liquid in said container to maintain said latch member in switch-closed condition for liquid pumping action.

Claim 10

For use with a liquid pump having a discharge port connected to a liquid receiving receptacle; a pump controller comprising an arm for supporting said container in one end portion of said arm, means pivotally supporting said arm in its other end portion, resilient means urging same arm into upwardly swung position, a pump control switch having cooperating components, one of said switch components being carried on said arm, said switch being closed when said arm is in upwardly position, the bias of said resilient means being less than the combined gravitational force of the container and a predetermined volume of liquid whereby when such volume has been reached said arm will be swung downwardly causing switch opening with termination of liquid pumping action, detent surface means provided upwardly of said arm, a latch member disposed between said detent surface means and said arm and engageable therewith, means rockably mounting said latch member for rotation about an axis parallel to said detent surface means for movement between switch-closed position and switch-open condition, said arm resilient means overcoming said urging means prior to reception of a predetermined volume of liquid in said container to maintain said latch member in switch-closed condition for liquid pumping action.

Claim 11

For use with a liquid pump having a discharge port connected to a liquid receiving receptacle; a pump controller as defined in claim 5 and further characterized by the rockable mounting means comprising a shaft, said latch member being eccentrically mounted on said shaft for rotationally urging said shaft through gravity intO switch-open condition, said latch member urging means also comprising a spring.

Claim 12

For use with a liquid pump having a discharge port connected to a liquid receiving receptacle; a pump controller as defined in claim 6 and further characterized by said latch member having opposed first and second detent elements for respective engagement with said detent surface means and said arm when said switch is in closed condition and in the opposite relationship therewith when said switch is in open condition.