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Filling tool

a filling tool and tool body technology, applied in the field of filling tools, can solve the problems of environmental and safety problems, false readings, and frequent maintenance of such systems, and achieve the effects of avoiding false readings, avoiding false readings, and avoiding false readings

Inactive Publication Date: 2006-08-03
SERV I QUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, if the tool is not properly engaged on the coupler, the tool will be forced off of the coupler, discharging refrigerant into the environment, creating an environmental and safety problem.
However, false readings are possible due to the limitations of the proximity switch, and frequent maintenance is required to maintain such systems.

Method used

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Examples

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Embodiment Construction

[0013]FIGS. 2-6 show a filling tool for mating with an electrically conductive coupler with a tip extending from the coupler, according to an exemplary embodiment of the invention. The filling tool 1 comprises a housing 3, and an electrically conductive valve stem 2 disposed in and electrically isolated from the housing 3. In an exemplary embodiment, the housing 3 comprises a cylinder 8, a front cartridge 4, and a rear cartridge 6. The filling tool 1 is generally cylindrical and has an axis, with a front direction F and a rear direction R in opposing directions along the axis. A rear cartridge 6 is disposed in the cylinder 8 at the rear R, and a front cartridge 4 is disposed in the cylinder 8 at the front F. The cylinder 8 and the cartridges 4, 6 may comprise a machinable metal suitable for use with the particular fluid to be used, for example, stainless steel or aluminum. The cylinder 8 has a high-precision bore for receiving the front and rear cartridges 4, 6. As shown in FIG. 2, ...

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Abstract

A filling tool is provided, for mating with an electrically conductive coupler having a tip extending therefrom. The filling tool comprises a housing, an electrically conductive valve stem disposed in and electrically isolated from the housing, and an electrically conductive contact extending from the valve stem that is biased and axially movable. An electrical circuit is completed through the filling tool and the coupler by contact between the tip of the coupler and the contact on the valve stem.

Description

FIELD OF THE INVENTION [0001] The invention relates to a filling tool, and more particularly to a filling tool that detects a mating coupler for automatic attachment of the filling tool to the mating coupler and for detection of disconnection of the filling tool from the mating coupler. BACKGROUND OF THE INVENTION [0002] In the air conditioning and vehicle manufacturing industries, there is a need to fill systems with refrigerant. In existing systems a male coupler is provided on the system. A typical coupler 100 is shown in FIG. 1. The coupler 100 has a channel for filling and / or evacuating the system to which it is attached. A tip 106, which is biased forward by a coupler spring 102, extends from the coupler 100, and can be the end of a valve stem disposed in the coupler. A circumferential groove 104 is formed in an outside surface of the coupler. A filling tool is configured to sealingly mate with the male coupler and engage the coupler by axially displacing a tapered cam toward ...

Claims

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Application Information

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IPC IPC(8): B65B1/28F25B45/00B65B1/20
CPCB60H1/00585
Inventor MOSCARELLI, ANDREW VINCENTMCGOWAN, CHARLES JOSEPH
Owner SERV I QUIP