Oil injection system for air conditioning equipment
US5027605A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 17, 1990 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | May 17, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2345/006
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
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 cylinde…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.