Cartridge and meter for receiving the cartridge

摘要

The specification describes a cartridge for insertion into a meter, the interior of the meter comprising a boss having a main body and a protrusion extending from the main body. The cartridge comprises an orientation member provided at one end of the cartridge, the orientation member comprising a recess having a cross-sectional shape corresponding to that of the boss and configured to receive the boss therein, the orientation member further comprising a ramp surrounding at least part of the portion of the recess corresponding to the main body, the portion of the recess which corresponds to the protrusion adjoining the lower end of the ramp via a step.

主权项

1. A cartridge for insertion into a meter, the interior of the meter comprising a boss having a main body and a protrusion extending from the main body, the cartridge comprising:
an orientation member provided at one end of the cartridge, the orientation member comprising a recess having a cross-sectional shape corresponding to that of the boss and configured to receive the boss therein, the orientation member further comprising a ramp surrounding a majority portion of the recess corresponding to the main body, a second portion of the recess corresponds to the protrusion and adjoins the lower end of the ramp via a first step and adjoins the higher end of the ramp via a second step that is a greater height than the first step, wherein a second portion of the recess has a base that is defined by a distance between the first step and second step such that the protrusion is received in the second portion when the cartridge is fully inserted into the meter.