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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7343697 | Low profile flights for use in a drum A rotating apparatus (10) for drying a material (44) is disclosed. In one embodiment, the rotating apparatus (10) includes a generally cylindrical drum (12), a burner (20) having a burner head (22) at least partially dispose... | 03/18/2008 |
| 7204636 | Granular and aggregate blending, cooling and screening rotary drum A rotary drum configured for the efficient blending, cooling, and screening of granular products having an outer cylindrical shell, an intake end, and an exit or discharge end. The rotary drum is normally rotated at a predetermined speed by a conventional drive pack... | 04/17/2007 |
| 7155841 | Rotary impinging stream dryer An improved rotary shell or drum dryer (10) is provided having an elongated, horizontally disposed, axially rotatable shell (12) with product and air inlets (14, 18) and an outlet (16) at opposite ends of the shell. Internally, the dryer ... | 01/02/2007 |
| 7044630 | Counter-flow asphalt plant method A method for operating a counter-flow aggregate dryer for an asphalt plant in which primary aggregate materials are introduced into a first end of a horizontally rotating cylinder and travel to the second, discharge end of the cylinder through drying and combustion ... | 05/16/2006 |
| 6931758 | Method of controlling moisture of material and apparatus therefore An apparatus for carrying out a method of controlling the moisture of tobacco material comprises a hollow rotating cylinder (6) having an inlet (4) and an outlet (8) for tobacco material, and a feeding device for supplying a moist air flow into ... | 08/23/2005 |
| 6672751 | Counter-flow asphalt plant with combustion zone feed and exhaust gas heater A counter-flow aggregate dryer for an asphalt plant is equipped with a secondary feeder for introducing RAP or virgin materials intermediate the ends of the combustion zone of the dryer. Nonveiling flights in the combustion zone shield material carried th... | 01/06/2004 |
| 6584700 | Drying and cooling unit A dryer-cooler unit comprising a single vessel wherein drying and cooling occur. The unit comprises a rotary dryer and a stationary discharge hood. Cooling air is distributed through the discharge hood.... | 07/01/2003 |
| 6564470 | Roasting appliance An appliance for thermally processing granular material, especially for roasting food items such as coffee beans. The granular material lies on a perforated base through which gas flows upwardly to create a fluidized bed. The exhaust gas is fed to a cyclo... | 05/20/2003 |
| 6478461 | Transportable hot-mix asphalt manufacturing and pollution control system A hot-mix asphalt manufacturing system including treatment of emissions and recirculated gases includes a counter-flow rotary dryer 12 having a combustion chamber 28, an inlet 24 for dry ingredients, an outlet 26 for hot-mix asphalt, and a plate collector... | 11/12/2002 |
| 6425685 | Process for reclaiming salvaged asphalt A process for reclaiming salvaged asphalt includes feeding salvaged asphalt mixed with new sands, stones and tar in a designed proportion into a double-layer drying machine including inner and outer gyroscopic drums; indirectly heating the salvaged asphal... | 07/30/2002 |
| 6340240 | Drum mixer having isolated aggregate transport channels A drum mixer for heating, mixing and drying an aggregate material, such as a mixture of recycled asphaltic pavement and virgin aggregate. The drum mixer includes an inclined drum having a first end and a second end. The drum forms a pre-heating/blending s... | 01/22/2002 |
| 6267493 | Drum mixer having a plurality of isolated aggregate transport channels A drum mixer for heating, mixing and drying an aggregate material, such as a mixture of recycled asphaltic pavement and virgin aggregate. The drum mixer includes an inclined drum having a first end and a second end. The drum forms a pre-heating/blending s... | 07/31/2001 |
| 6185842 | Apparatus and methods for controlling the temperature of exhaust gases in a drum mixer A inclined rotary drum mixer has flights for forming a veiling pattern of particles across the width of the drum for a substantial axial extent. The drum has a burner for flowing hot gases of combustion in heat transfer contact with the particle or aggreg... | 02/13/2001 |
| 6138377 | Apparatus and process for cooling and de-steaming calcined stucco The present invention is an apparatus and process for cooling and de-steaming hot calcined stucco used in the production of gypsum boards or bagged plaster. The apparatus is a fluid bed stucco cooler and comprises a cooler housing having a plenum with two... | 10/31/2000 |
| 6110430 | Decontamination plant including an indirectly heated desorption system The present invention is a decontamination plant for removing contaminates from contaminated material. The decontamination plant comprises an outer shell including a cavity therein. A drum formed of heat conductive material is rotatably mounted in the cav... | 08/29/2000 |
| 5822881 | Method for conditioning refuse A method and apparatus for treating refuse by non-combustibly shrinking plastics in the refuse. The trash is heated to a temperature of at least 250° to 500° for a minimum period of time. A rotatable chamber heats the refuse and transports the refuse fo... | 10/20/1998 |
| 5802734 | Method for facility for dehydrating plants, particularly for dehydrating forage A method and a facility for dehydrating plants, particularly for dehydrating forage. The method consists in introducing the forage to be dehydrated in a drier with a retention time and a temperature that are suitable to achieve the at least partial drying... | 09/08/1998 |
| 5737849 | Recycle moisture evaporation system A recycled asphalt product (RAP) drying apparatus comprising a three-zone counterflow RAP dryer and a duct system to recycle essentially all of the hot gases back through the system. The three-zone RAP dryer has a combustion zone at one end, a drying zone... | 04/14/1998 |
| 5697168 | Indirect heating screw conveyor Single or multi-screw indirect-heating screw conveyor desorbers having a heating gas guide enclosed by the screw shaft wall (single-wall screw shafts) or located between a screw shaft wall and an internal chamber wall (double-walled screw shafts). Predete... | 12/16/1997 |
| 5664882 | System for concurrently remediating contaminated soil and producing hot mix asphalt A system for concurrently remediating contaminated soil and producing hot mix asphalt includes a single inclined rotary drum; a burner assembly with a burner head spaced intermediately within the drum and oriented to direct a flame and hot gas stream upst... | 09/09/1997 |
| 5628126 | Revolving drum drying apparatus and method Apparatus for drying a wet material such as sewage sludge comprises a drum (11) mounted for revolution about a horizontal axis and containing interconnected inner (22) and outer (21) concentric spirals containing a continuously-recirculatable charge of pa... | 05/13/1997 |
| 5620249 | Compact enclosable asphalt plant A compact, enclosable plant for producing hot mix asphalt from various ingredients, including recycle asphalt pavement ("RAP"). The system includes an inclined rotary drum, a burner assembly for generating a hot gas stream within the drum; a baghouse, exh... | 04/15/1997 |
| 5613306 | Method and apparatus for conditioning refuse A method and apparatus for treating refuse by non-combustibly shrinking polyfoam plastics in the refuse. The trash is heated at a temperature between 250° and 500° for a minimum period of time. A rotatable chamber heats the refuse and transports the ref... | 03/25/1997 |
| 5579587 | Recycle moisture evaporation system A recycled asphalt product (RAP) drying apparatus comprising a three-zone counterflow RAP dryer and a duct system to recycle essentially all of the hot gases back through the system. The three-zone RAP dryer has a combustion zone at one end, a drying zone... | 12/03/1996 |
| 5555639 | Rotary drum dryer An anti-clogging rotary drum dryer for drying stranded material is provided which includes a tubular, rotatable housing having an inlet for receiving drying gas and wet material, as well as first and second, apertured, telescopically interfitted tubes wit... | 09/17/1996 |
| 5551166 | Dryer drum coater having vented outer shell for VOC/NOx reduction A dryer drum coater reduces blue smoke emissions by evacuating the blue smoke from the dryer drum coater independently of the exhaust of combustion products. The blue smoke, produced when heated and dried aggregate is mixed with other asphaltic products s... | 09/03/1996 |
| 5515620 | Method and apparatus of rotatable drum dryer with flights releasably secured in different orientations An apparatus and method for operating a rotatable drying drum are disclosed herein. The drying drum has a burner for generating hot gases of combustion for flow through the drum to dry aggregate. The drum includes identical drying flights each having a ge... | 05/14/1996 |
| 5480226 | Rotary drum dryer having aggregate cooled shielding flights and method for the utilization thereof A rotary drum dryer has devices for cooling shielding flights located in the combustion zone of the drum. The devices comprise cooling flights which rotate with the drum to scoop up relatively small amounts of virgin aggregate from aggregate accumulated i... | 01/02/1996 |
| 5470146 | Countercurrent drum mixer asphalt plant A drum mixer asphalt plant is provided with a rotatable cylinder 10 in which virgin aggregate, recycle material and liquid asphalt are mixed to produce an asphaltic composition and the hot gas stream for heating and drying the materials flow in countercur... | 11/28/1995 |
| 5455005 | Material remediation in multi-function heating drum Material remediation apparatus includes a remediation drum through which materials, such as soil contaminated with hydrocarbons, are advanced from a feed end to a discharge end of the drum. A tube extending concentrically from the discharge end of the dru... | 10/03/1995 |
| 5412881 | Method and apparatus for conditioning refuse A method and apparatus for treating refuse by non-combustibly shrinking polyfoam plastics in the refuse. The trash is heated at a temperature between 250° and 500° for a minimum period of time. A rotatable chamber heats the refuse and transports the ref... | 05/09/1995 |
| 5407809 | Digester for converting organic material into compost A rotatable digester drum for convening organic waste material into compost which has internally disposed along its longitudinal axis a series of spaced-apart baffles, each baffle having a variable cross sectional area ranging from 60 to 100% of the cross... | 04/18/1995 |
| 5403395 | Reel for applying topical substances to base products An arrangement for the application of topical substances to base products. A rotatable star-shaped reel structure is rotated, in which a flowable base product is tumbled while being coated with the topical substance so as to ensure an appropriate uniform ... | 04/04/1995 |
| 5393501 | Material remediation in multi-function heating drum Material remediation apparatus includes a remediation drum through which materials, such as soil contaminated with hydrocarbons, are advanced from a feed end to a discharge end of the drum. A tube extending concentrically from the discharge end of the dru... | 02/28/1995 |
| 5321900 | Food and materials dryer A food and materials dryer having one or more cylindrical hollow rotary tunnels each consisting of an outer cylindrical shell and an inner lining cylinder. The inner lining cylinder has perforations and is mounted substantially concentrically within the o... | 06/21/1994 |
| 5318049 | Method of and apparatus for drying a tobacco sample and determining the moisture content thereof A method of and an appratus for automatically determining the moisture content of a tobacco sample and for then automatically determining the stem content of the tobacco sample are disclosed. The apparatus utilizes a dryer, such as a rotary drum dryer wit... | 06/07/1994 |
| 5305533 | Combined direct and indirect rotary dryer with reclaimer Both indirect and counterflow direct heating are utilized in a dryer to achieve improved efficiency with a reduced tendency to char or damage the treated material. A horizontal drum has a first segment of aluminum and a second section of stainless steel a... | 04/26/1994 |
| 5261738 | Asphalt drum mixer with bypass for controlling the temperature of the exhaust gas A drum mixer which is useful in the continuous production of asphalt paving composition. The mixer includes a hollow drum which is mounted for rotation about an inclined axis, and the aggregate is introduced into the upper end of the drum so that as the d... | 11/16/1993 |
| 5197204 | Rotary dryer and associated drying plant A rotary dryer (1) for the drying of, for example, biological sludge, comprises a rotatable drum having rake elements (6) with openings for the passage of sludge disposed on the inner side of the drum casing. A drying plant with such a dryer further comprises ... | 03/30/1993 |
| 5178456 | Device for the preparation of bituminous coated products comprising a drum with parallel streams and a countercurrent drum and corresponding process The device comprises a drum drier with parallel streams (1) fed with recycled materials and a drum drier and countercurrent mixer (2) fed with virgin aggregates at its entry end (2a). The exit end (1b) of the drum with parallel streams (1) through which t... | 01/12/1993 |
