Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7921786 | Grating system and sidewall seal arrangement for oscillating grate stoker The invention includes a grate system for a boiler. The grate system includes a grate unit and a side header guard. The grate unit supports fuel during combustion thereof, and has an upper surface, a lower surface, and upturned lateral edges. The side header guard i... | 04/12/2011 |
| 6332410 | Grate for incineration plants The invention relates to a grate for incineration plants for the incineration of combustible material, in particular refuse, comprising at least one grate track, which is composed of fixed and movable grate-lining rows, which are arranged alternately in t... | 12/25/2001 |
| 6221329 | Pyrolysis process for reclaiming desirable materials from vehicle tires A process and system for the recovery of desirable constituent materials from vehicle tire pieces through pyrolysis. The system includes a pyrolysis section that is divided into a plurality of individual heating zones. Each of the heating zones is heated ... | 04/24/2001 |
| 6213031 | Method of cooling a grate for a furnace and grate for a furnace To cool a grate having alternately fixed and movable rows (1, 1') of grate bars (2), cooling liquid is sprayed into cavities (7), open at the bottom, of the grate bars (2) from spray tubes (10) situated in the underblast region (8) and in the process vapo... | 04/10/2001 |
| 6089170 | Apparatus and method for low-NOx gas combustion A low NOx gas combustor includes an air injection mechanism to create a combustion air path. A set of arc-shaped gas injector arrays are formed in an annular configuration. Each arc-shaped gas injector array injects an arc-shaped stream of gas that inters... | 07/18/2000 |
| 5671687 | Incinerator having a fully automatic feeder An incinerator comprises a feeding plate, a first combustion chamber, a second combustion chamber, a curved duct, an air exhausting device, a water screen device, and a water tank. The feeding plate is provided on the underside thereof with a vibrating de... | 09/30/1997 |
| 5497711 | Grate plate Improved grate plates are designed to produce multiple eddy currents in the absence of clinker and to provide even greater air distribution when overlaid by clinker. Each grate plate has a plurality of upwardly flaring wells which open to the upper surfac... | 03/12/1996 |
| 5235921 | Combustion system having a movable hearth The present invention is a combustion chamber for an incinerator that has a chamber with a plurality of refractory walls and an opening for the delivery of materials into the chamber. A hearth is contained within the chamber. The hearth has a surface for ... | 08/17/1993 |
| 4981090 | Arrangement in a movable grate A movable grate comprising a number of grate steps which are arranged adjacent each other, partly overlap one another and are pivotable around an axis extending in the longitudinal direction of said grate step, and which are pivotably mounted outside shie... | 01/01/1991 |
| 4744311 | System for feeding solid particulate material for combustion in a reactor vessel A new and improved system for feeding solid particulate material such as refuse derived fuel for burning in a combustion reactor vessel such as a boiler includes a fuel injector chute having a lower end for directing a flow of said solid particulate mater... | 05/17/1988 |
| 4665840 | Mechanical stoker An improvement for use in a mechanical stoker with a coal stove is disclosed. The improvement device is used with a stoker, generally including a hopper, operatively connected to a small stove having a fire box forming an ash pit. The fire box, through it... | 05/19/1987 |
| 4600098 | Plate for oscillating-type transporter A grate plate and a combination of a grate plate and support apparatus for a reciprocating grate type material transport apparatus. The support apparatus includes spaced apart forward posts having an interconnecting transverse bar and spaced apart rearwar... | 07/15/1986 |
| 4586442 | Gasifier method and apparatus A gas generator for generating combustible gases from biomass material comprising an enclosure within which is mounted an inclined support intermediate the top and bottom such as to define a gas generating chamber above the support and a plenum chamber be... | 05/06/1986 |
| 4563959 | Step type stoker with oscillation mechanism The present invention relates to a step type stoker with an oscillation mechanism having: a plurality of stoker frames (2 and 2') which are installed at an interval in the upstream to downstream direction, and at least one of which forms an air supply pat... | 01/14/1986 |
| 4491077 | Vibrating hearth burners The invention relates to vibrating hearth burners. Three problems exist in known such burners, these being uniformity of fuel combustion; ash discharge; and over-heating of the grate. To meet the first of these, the present invention provides a burner in ... | 01/01/1985 |
| 4463688 | Grate block for a refuse incineration grate An improved grate block includes a blow-out channel terminating at a blow-out opening through the face of the block, the opening having pre-determined dimensional relationships with respect to the size of the front face of the block. The ratio of the widt... | 08/07/1984 |
| 4254715 | Solid fuel combustor and method of burning A primary combustion chamber is located above a secondary combustion chamber with a support grate between the two for supporting particulate solid waste fuel to be burned efficiently. Primary air is introduced to the primary combustion chamber with second... | 03/10/1981 |
| 4250818 | System utilizing a vibratory combustion bed to incinerate waste material, or fuel A vibration bed (1) is assembled together of a plurality of rigidly connected frames (2) extending in the feed direction (A) of the material to be burned. The frames have projecting sides (10) extending downwardly and in the feed direction. Two effectivel... | 02/17/1981 |
