High turndown rotary dryer flights
Patent 4964226 Issued on October 23, 1990. Estimated Expiration Date: 
October 6, 2009. 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.
October 6, 2009. 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 References 3245154 Method and apparatus for drying bagasse Patent #: 4376343 InventorAssigneeApplicationNo. 418421 filed on 10/06/1989US Classes:34/136, Concurrent gas or vapor flow only34/108, Rotary drums or receptacles34/137, Countercurrent gas or vapor flow only241/91, Rotating comminuting surface having openings366/226, Foraminous type432/118Having structure agitating or controlling the motion of the chargeExaminersPrimary: Yuen, Henry C.Attorney, Agent or FirmInternational ClassF26B 011/02AbstractA dryer drum for drying bulk material including a rotating drum having an inlet for material to be dried at one end and an outlet for dried material at the other end, a center shaft extending therethrough, vanes mounted on the shaft circumferentially spaced from each other and axially spaced along the shaft, the vanes having a first panel extending substantially in a radial plane parallel to the axis of the shaft, a second panel attached to the first panel and facing in a downstream direction and a third panel attached to the second panel; wherein the bulk material to be dried moves in sliding movement over the panels and is mechanically conveyed toward the dryer inlet.Field of SearchRotary drums or receptaclesConcurrent gas or vapor flow only Countercurrent gas or vapor flow only Axial treated material feed type Axial treated material feed type Axial treated material feed type TUMBLER-TYPE ROTARY - DRUM FURNACE Including plural, distinct serially connected work chambers Work advancing type (e.g., steady flow of work) Counterflow of work and combustion products Having structure agitating or controlling the motion of the charge Rotating comminuting surface having openings Foraminous type | |
