Murray Corporation

At&t Technologies, Inc.

Ronald C Hardesty

Edwin C Hardesty

Robert H Proctor

An apparatus for dispensing a measured amount of hydroscopic lubricant into an air conditioning system. The apparatus includes a container for the lubricant which has a key type coupling to a cylinder. The cylinder has a piston which may reciprocate therein. The piston has a bore therethrough so that the lubricant may pass from the container and through the piston, and thereafter, through a hose and into the air conditioning system. The container has a seal to protect the lubricant from moisture, the seal being interrupted when the cylinder is coupled to the container. The cylinder has driven pins extending outwardly therefrom and the cylinder also has a pair of diametrically opposed slots therein. The piston has a pair of diametrically opposed drive pins thereon arranged so that the piston drive pins communicate with the slots in the cylinders. A detachable leveraged handle having arms joined in a scissor fashion is provided. The cylinder is received in the handle so that the drive pins on the cylinder and the drive pins piston are engaged by notches on the ends of the arms. Opening and closing the arms of the handle produces reciprocating movement of the piston within the cylinder. This movement pumps a controlled amount of lubricant through the apparatus. To prevent contamination of different incompatible lubricants, containers and cylinders are keyed in a manner such that the containers may not be used with incompatible cylinders and vice versa.

Oil injection system for air conditioning equipment

A quick-disconnect coupling for a pair of telescopic slidable tubular members has an annular garter spring trapped in a spring housing carried by one of the tubular members. The garter spring is adapted to be lodged between a right-angularly disposed flange on the spring housing and an upwardly-inclined annular flange formed on the end of the other tubular member. The respective flanges are arranged transverse to each other. The components of the coupling are formed conveniently and economically, without the necessity for expensive metal-forming dies, and are easily assembled.

Coupling means for tubular members

A tool (20) is provided for terminating an end of a telephone cord or inside wiring with a modular plug (21). The tool includes a housing (81) having a cord or inside wiring-receiving opening at one of its ends and a plug-receiving nest (122) at an opposite end. The tool also includes a rocker (82) which is mounted pivotally in the housing and which has a first end adjacent to the cord-receiving end of the housing and a second end adjacent to the nest. After and end portion of a cord, for example, is inserted into the cord-receiving end of the housing, a user depresses the adjacent first end of the rocker to cause jacket-stripping facilities of the rocker to cut the cord jacket. When the cord is withdrawn, the jacket is removed from the end portion to expose individually insulated conductors. Then the end portion of the cord is inserted into a modular plug body which has been armed with blade-like terminals (30-30) and the plug inserted into the nest at the other end of the housing. The second end of the rocker is moved to cause portions of the rocker to seat fully the terminals in the plug body to engage electrically the insulated conductors. During the same motion of the rocker, strain relief portions of the plug body are moved into engagement with the jacket and the cord conductors to secure the plug body to the cord.

Growing community of inventors

Sykesville, MD, United States of America

Ronald C Hardesty