Viewing instrument for chimney

Patent · Tue Jul 21 00:00:00 EDT 1987

OSTI ID:6043302

Van Patten, F D

An apparatus is described for visually monitoring the vent of a chimney while the chimney is drawing exhaust gases through a flue entrance that includes: a hollow barrel unit sealed within a horizontal receiving opening passing through a wall of the chimney above the flue entrance, the barrel unit further having an adjusting means for changing the axial length of the unit. The barrel unit can be fitted to the chimney wall. Mounting means removably joins to the outer end of the barrel unit to provide an airtight seal. An elongated quartz rod is contained within the mounting means that passes through the barrel unit into the chimney vent. The rod has an upper light entrance face horizontally disposed at the free end for receiving light from the chimney vent. A reflecting surface immediately below the light entrance face directs entering light axially along the rod and a light exit face perpendicular to the axis of the rod which is located outside the chimney.

• Assignee: NOV; NOV-87-073375; EDB-87-148216
• Patent Number(s): US 4681086
• OSTI ID: 6043302
• Resource Relation: Patent File Date: Filed date 2 Jun 1986
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
BUILDINGS
CHIMNEYS
MONITORING
REMOTE VIEWING EQUIPMENT
VENTS
AIRTIGHTNESS
EXHAUST GASES
FLUE GAS
GAS FLOW
RODS
SEALS
EQUIPMENT
FLUID FLOW
FLUIDS
GASEOUS WASTES
GASES
WASTES
320107* - Energy Conservation
Consumption
& Utilization- Building Systems- (1987-)