Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed. Log In for Pricing and Availability FIELD CONTROLS BAROMETRIC DAMPER 5,6,7. Interval: 1 Please contact APR Supply to Purchase Field Controls 6'MG1. Name: Field Controls Co MPN: 6'MG1 Brand: Field Controls UPC: 090747200009 APR Part : 15854 Your: Min. Original Assignee Sears Roebuck and Co Priority date (The priority date is an assumption and is not a legal conclusion. Field Controls 6'MG1 Double Acting Barometric Draft Control, LP/Natural Gas Mfg. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US686507A Inventor Edward B Moore Current Assignee (The listed assignees may be inaccurate.
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the negative forces caused by changes in temperature and barometric pressure, as well as the effects of wind.
6 barometric draft control damper pdf#
Google Patents Barometric draft controlÄownload PDF Info Publication number US2475799A US2475799A US686507A US68650746A US2475799A US 2475799 A US2475799 A US 2475799A US 686507 A US686507 A US 686507A US 68650746 A US68650746 A US 68650746A US 2475799 A US2475799 A US 2475799A Authority US United States Prior art keywords damper ring barometric draft control pinion Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Field Controls Draft Control, 6 in Damper. Field Draft Controls maintain consistent draft by counteracting the negative forces caused by changes in temperature and barometric pressure, as well as the effects of wind.
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Google Patents US2475799A - Barometric draft control