Smoke generating and dispensing apparatus and method
Patent 4259970 Issued on April 7, 1981. Estimated Expiration Date: 
December 17, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 17, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References3889690 InventorApplicationNo. 06/104701 filed on 12/17/1979US Classes:131/185With igniter and/or match scratcherExaminersPrimary: Pellegrino, Stephen C.Attorney, Agent or FirmInternational ClassA24F 47/00 (20060101)AbstractComminuted material conveyed from a hopper by a blower induced airstream accumulates on a screen. When a measured amount of material accumulates on the upstream side of the screen, a burner is energized to effect combustion of the material, producing smoke and unclogging the screen. The smoke is displaced by the airstream through the screen and is discharged therewith from a smoke outlet.Field of SearchWith igniter and/or match scratcher | |
