Pipes and tubular conduits – Longitudinally seamed – Sectional
Reexamination Certificate
2007-05-01
2007-05-01
Brinson, Patrick F. (Department: 3754)
Pipes and tubular conduits
Longitudinally seamed
Sectional
C138S162000, C285S179000, C285S182000, C285S183000, C174S092000
Reexamination Certificate
active
10987234
ABSTRACT:
An elbow for a dryer exhaust vent conduit. The elbow can have two nestable channel sections, each channel section having a generally C-shaped cross-section, which may be substantially semi-circular. Each channel section has a connection mechanism along at least one side such that the two channel sections are joinable to form a substantially tubular conduit which has a smooth interior surface, reducing friction losses to the airflow speed of the dryer exhaust. Each channel section can be curved in a large radius arc to provide a turn to the elbow, which may extend around a quarter circle to provide a 90° turn to the dryer exhaust vent conduit. Snap fit locking tabs may lock the two channel sections together. Ends of the elbow may fit into or outside adjoining conduit pipes. The channel sections can be nested for ease of transport and storage and can be easily assembled on site.
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