Oil injection system for air conditioning equipment

An apparatus for dispensing a measured amount of lubricant into an air conditioning system or the like, wherein the lubricant is substantially hydroscopic and tends to absorb moisture which, if introduced into the refrigerant, would cause premature failure of the air conditioning system, and wherein the lubricant contains additives which may substantially contaminate other additive-containing lubricants intended for refrigerant purposes, the apparatus comprising a container for the lubricant, the container having a seal thereon, such that the lubricant is not exposed to the atmosphere and thus cannot absorb moisture from the atmosphere, a pump means including a cylinder having a reciprocatory piston therein, means for connecting the pump means to the air conditioning system, means for coupling the cylinder to the container, said last-named coupling means including means for interrupting the seal upon coupling the cylinder to the container, means externally of the pump means for reciprocating the piston so that the pump means will dispense a measured amount of the lubricant into the air conditioning system, thereby preventing inadvertent absorption of moisture by the lubricant or contamination of the lubricant by non-intended additives, and hence into the refrigerant, and thereby preventing a consequent costly failure of the air conditioning system;

• the cylinder having a first end, a second end and a midpoint, a pair of slots extending longitudinally on the cylinder from approximately the midpoint toward the second end thereof, the slots being on diametrically opposed side of the cylinder, the first end of the cylinder having thereon sealing means for coupling to the container, the first end of the cylinder further having therein first passage means for permitting the lubricant to pass from the container into the cylinder;
• the second end of the cylinder being oriented toward the air conditioning system, a reciprocatory piston received within the cylinder;
• the piston having a longitudinal bore therethrough such that lubricant may pass from the first end of the cylinder, through the bore in the piston and to the air conditioning system;
• means for connecting the piston to the air conditioning system, the connecting means having therein second passage means for permitting lubricant to pass from the piston to the air conditioning system;
• the piston having at least one sealant means thereabout such that a seal is made between the piston and the cylinder;
• the piston having a mid point, a pair of drive pins attached to piston at approximately the midpoint thereof, the drive pins extending outwardly from the piston, each drive pin being attached on diametrically opposed sides of the piston such that when the piston is received in the cylinder, the drive pins on the piston communicate with the respective longitudinal slots in the cylinder, the drive pins on the piston extending outwardly through said respective slots such that when the piston reciprocates longitudinally within the cylinder, the longitudinal movement is limited by the drive pins on the piston extending from the longitudinal slots;
• and means for reciprocating the piston within the cylinder.

An apparatus for dispensing a measured amount of lubricant into an air conditioning system or the like, wherein the lubricant is substantially hydroscopic and tends to absorb moisture which, if introduced into the refrigerant, would cause premature failure of the air conditioning system, and wherein the lubricant contains additives which may substantially contaminate other additive-containing lubricants intended for refrigerant purposes, the apparatus comprising a container for the lubricant, the container having a seal thereon, such that the lubricant is not exposed to the atmosphere and thus cannot absorb moisture from the atmosphere, a pump means including a cylinder having a reciprocatory piston therein, means for connecting the pump means to the air conditioning system, means for coupling the cylinder to the container, said last-named coupling means including means for interrupting the seal upon coupling the cylinder to the container, means externally of the pump means for reciprocating the piston so that the pump means will dispense a measured amount of the lubricant into the air conditioning system, thereby preventing inadvertent absorption of moisture by the lubricant or contamination of the lubricant by non-intended additives, and hence into the refrigerant, and thereby preventing a consequent costly failure of the air conditioning system;

• the container having a threaded cap thereon, the cap having the seal therein;
• the pump means having a cooperating threaded end thereon, such that the pump means may be keyed to the container to align the pump means with the seal on the container;
• and the pump means further having a protruding end within the threaded end, the protruding end extending outwardly from the threaded end such that when the pump means is threadably engaged to the threaded cap on the container, the protruding end of the pump means may interrupt the seal within the cap of the container thereby permitting lubricant from the container to enter the pump means.

An apparatus for dispensing a measured amount of lubricant into an air conditioning system or the like, wherein the lubricant is substantially hydroscopic and tends to absorb moisture which, if introduced into the refrigerant, would cause premature failure of the air conditioning system, and wherein the lubricant contains additives which may substantially contaminate other additive-containing lubricants intended for refrigerant purposes, the apparatus comprising a container for the lubricant;

• a dispensing means connected to the container and means for connecting the dispensing means to the air conditioning system;
• the dispensing means including a cylinder having a reciprocating piston therein, the piston having a longitudinal bore therethrough such that the lubricant may pass from the container, through the piston and to the air conditioning system;
• and means for reciprocating the piston within the cylinder;
• the cylinder having a first end connected to the container, a second end oriented toward the air conditioning system and a midpoint, a pair of slots extending longitudinally on the cylinder from approximately the midpoint toward the second end thereof, the slots being on diametrically opposed sides of the cylinder;
• the piston having a midpoint, a pair of drive pins attached to the piston at approximately the midpoint thereof, the drive pins extending outwardly from the piston, each drive pin being attached on diametrically opposed sides of the piston such that when the piston is in the cylinder, the drive pins on the piston communicate with the respective longitudinal slots in the cylinder, the drive pins on the cylinder extending outwardly through said slots such that when the piston reciprocates longitudinally, within the cylinder, the longitudinal movement is limited by the drive pins on the piston extending from the longitudinal slots.

An apparatus for dispensing a measured amount of fluid from a source of the fluid, the apparatus comprising:

• a cylinder having a first end, a second end and a midpoint;
• means for connecting the first end of the cylinder to the source of the fluid;
• a pair of slots extending longitudinally on the cylinder from approximately the midpoint toward the second end of the cylinder, the slots being on diametrically opposed sides of the cylinder;
• a reciprocating piston received within the cylinder, the piston having a longitudinal bore therethrough;
• the first end of the cylinder having a first passage means therein to permit the fluid to pass from the source of the fluid into the cylinder, the longitudinal bore in the piston having a second passage means therein to permit fluid to pass from the piston, such that the fluid may pass from the source of the fluid through the cylinder and through the piston;
• the piston further having a midpoint, a pair of drive pins attached to the piston at approximately the midpoint thereof;
• each drive pin being attached on diametrically opposed sides of the piston such that when the piston is received within the cylinder, the drive pins on the piston communicate with the respective longitudinal slots in the cylinder, the drive pins on the piston extending outwardly through the respective longitudinal slots, such that when the piston reciprocates longitudinally within the cylinder, the longitudinal movement is limited by the drive pins on the piston extending from the longitudinal slots and the amount of fluid dispensed is thereby controlled;
• and means for reciprocating the piston within the cylinder.

A detachable leveraged device for holding and moving a workpiece, the workpiece having a plurality of pins attached thereto, the device comprising:

• a pair of arms, each arm having a first end and a second end, the arms being joined near the respective first ends by a pin for pivotal movement of the arms about the pin in a scissor-like movement;
• the second ends of the respective arms forming respective handles, the first end of each arm being a bifurcated end, each bifurcated end having a first edge and a second edge, each first edge being spaced apart from each second edge such that the workpiece may be received between the respective edges of the respective bifurcated ends;
• each first edge and each second edge further having a notch formed therein such that when the workpiece is received between the respective edges of the respective bifurcated ends of the arms, the at least one pin attached to the workpiece is received in the notch in the edge of the one bifurcated end and the at least another pin attached to the workpiece is received in the notch in the edge of the other bifurcated end thereby permitting holding of the workpiece and movement of the workpiece when the arms of the leveraged device are pivoted;
• and the first end of each arm further having thereon means for locking the respective pins in the respective notches to prevent disengagement thereof when the workpiece is held and moved.

A set of lubricant apparatuses for dispensing a measured amount of lubricant into an air conditioning system or the like, wherein the lubricant is substantially hydroscopic and tends to absorb moisture which, if introduced into the refrigerant, would cause premature failure of the air conditioning system, and wherein the lubricant contains additives which may substantially contaminate other additive-containing lubricants intended for refrigerant purposes, the set having a plurality of members, each member of the set having a different designated lubricant which is used separately from the other members of the set, each member of the set comprising:

• a respective collapsible container for the designated lubricant, each container having a seal thereon, such that the lubricant is not exposed to the atmosphere and thus cannot absorb moisture from the atmosphere;
• a respective pump means including a cylinder having a reciprocatory piston therein;
• means for connecting the respective pump means to the air conditioning system;
• means for coupling the respective cylinder to the respective container, said last-named coupling means including means for interrupting the respective seal on the respective container upon coupling the respective cylinder to the respective container;
• means externally of each pump means for reciprocating the respective piston so that the respective pump means will dispense a measured amount of the designated lubricant into the air conditioning system;
• and means for keying the respective container of each member to the respective cylinder of said member, such that a cylinder used with a respective designated lubricant is not inadvertently used with a container for another designated lubricant, and vice-versa, thereby preventing inadvertent absorption of moisture by the lubricant or contamination of the lubricant by non-intended additives, and thereby preventing a consequent costly failure of the air conditioning system.

A method for dispensing a measured amount of lubricant into an air conditioning system or the like comprising the steps of:

• providing a designated collapsible container for the lubricant having a seal thereon, the container further having means thereon for attaching a designated pump means;
• providing the designated pump means for attachment to the designated container such that the designated pump means may be attached to only the designated container and such that a designated pump means used with a respective lubricant is not inadvertently used with a designated container for another lubricant and vice-versa;
• the designated pump means further having a reciprocatory piston therein;
• attaching said designated pump means to said designated container such that the seal on the designated container is interrupted permitting the respective lubricant to pass from the designated container to the designated pump means;
• connecting the designated pump means to the air conditioning system;
• providing a detachable leverage means;
• and connecting the detachable leverage means to the designated pump means such that the reciprocatory piston in the designated pump means may be reciprocated through a controlled distance thereby dispensing the measured amount of lubricant to the air conditioning system.