Abstract: Glass-to-metal hermetic seal of the compression type in which a central metal eyelet is sealed to a central conductor, the eyelet being bondable to and having a coefficient of expansion characteristic compatible with glass in which the eyelet is made non-ferromagnetic to eliminate unwanted induction heating and losses in pulsatory current carrying operation. The method of forming the seal is disclosed.

Abstract: A glass-to-metal compression sealed lead-in structure for electronic devices. The structure is constituted by an outer metal case having a high coefficient of thermal expansion (CTE), a lead-in conductor extending through the opening in the case and having a relatively low CTE, and a glass seal filling the space between the conductor and the case and having a relatively low or intermediate CTE. The conductor is fabricated of a machinable metal whose normal CTE is higher than required, the surface of the metal after the conductor is machined to specification, being treated with a substance that acts to reduce the CTE of the conductor to render it compatible with the CTE of the glass seal.

Abstract: This invention relates to oil burner installations which include a storage tank for the oil and a pump for delivering oil from the storage tank to a burner. When the storage tank is refilled with oil, sediment at the bottom of the tank is stirred up and placed in suspension. If the pump is operated while such sediment remains in suspension, the sediment may be drawn into the fuel line. Upon reaching the burner, such sediment may disable the oil burner installation by clogging the burner orifices.By preventing the oil pump from operating for a predetermined period of time after commencing to transfer oil into the oil storage tank, sediment is allowed to settle once again to the bottom of the tank. After the predetermined interval of time has elapsed, the pump and burner are once again permitted to operate, and the system then draws sediment-free oil into the fuel line and thence to the burner.