Abstract: Various embodiments of a metered dose inhaler are disclosed. The inhaler includes a container and a metering valve connected to the container. The metering valve includes a valve housing having first and second ends and a metering valve stem that extends through the first end, a metering chamber, and the second end of the valve housing. A first portion of the metering valve stem is disposed through a diaphragm opening of a diaphragm that is disposed at least partially within the first end of the housing and forms a dynamic seal with the diaphragm, and a second portion of the metering valve stem is disposed through a tank seal opening of a tank seal that is disposed at least partially within the second end of the housing and forms a dynamic seal with the tank seal. At least one of the diaphragm or tank seal includes a polytetrafluoroethylene material.

Abstract: A readout apparatus that can be carried in the shirt pocket of a technician. The readout apparatus is used to easily and quickly make a connection to a heating system via a data access port of the heating controls, especially in low light situations, without the need for cables or probes. A display enables a technician to determine information concerning the operational characteristics of the heating system control unit to obtain information concerning the operational characteristics of the heating system. Real time operational information concerning the operation of the heating system via its control unit such as well temperature, cad cell, and line voltage are provided. The apparatus is powered from the electrical power available at the data access port so that the apparatus does not require the use of batteries or need any external switching such as an on/off button.

Abstract: An abrasive compact with a substantially solid body is provided from a mass of abrasive particles which are bonded together on a particle-to-particle basis. A network of interstices is formed within the body by removing the metallic second phase by-product of a solvent catalyst sintering aid. The network of interstices is filled with the carbide by product of a non-catalyst sintering aid forking a solid body. A substrate is bonded to some of the particles and to some of the carbide filling the network of interstices.