Invention Grant
- Patent Title: Ventilation chimney section and method
- Patent Title (中): 通风烟囱部分及方法
-
Application No.: US11727313Application Date: 2007-03-26
-
Publication No.: US07798533B2Publication Date: 2010-09-21
- Inventor: John Waldner
- Applicant: John Waldner
- Main IPC: F16L11/12
- IPC: F16L11/12
Abstract:
A ventilation chimney or exhaust fan flue section for hog barns has inner and outer plastic tubes formed by edge welding plastic sheets. A snug fitting insulation sheet is slid between the tubes. Collars of male and female coupling elements are inserted into the ends of the section between the inner and outer tubes and secured by screws passing through the outer tube and into the collars. The chimney can be installed by combining sections using a suitable adhesive.
Public/Granted literature
- US20070228733A1 Ventilation chimney section and method Public/Granted day:2007-10-04
Information query
