摘要:
A closure for silica glass crucible to be mounted on an opening portion of a silica glass crucible is provided with a peripheral edge mounting portion closely adhered to an inner peripheral end of the opening portion.
摘要:
A closure for silica glass crucible to be mounted on an opening portion of a silica glass crucible is provided with a peripheral edge mounting portion closely adhered to an inner peripheral end of the opening portion.
摘要:
A lubricating system for use in a two-cycle engine having at least one valve pivotally mounted through bearings in the sidewall of an intake passage of a carburetor is disclosed which supplies lubricating oil directly on the sidewall of the intake passage to lubricate the valve bearings in order to prevent corrosion and sticking of the valve. The lubricating oil is delivered into the intake passage directly on the sidewalls upstream of the bearings so that the lubricating oil flows along these walls to assure adequate flow to the bearings. The lubricating oil may be delivered into the intake passage by supplying the oil directly through at least one of the bearings of the valve.
摘要:
A closure for silica glass crucible to be mounted on an opening portion of a silica glass crucible is provided with a peripheral edge mounting portion closely adhered to an inner peripheral end of the opening portion.
摘要:
By providing a method capable of avoiding invasion of starting material powder for crucible into an inner face of the crucible, it is made possible to reliably avoid the invasion of foreign substances into a vitreous silica crucible until an actual use time of the crucible and to handle the crucible with no contamination. A cover 3 mounted onto an opening portion 2 of a vitreous silica crucible 1, comprising a flange portion 4 in close contact with an outer peripheral end 2a of the opening portion 2, is mounted onto the crucible 1.