William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7275893 | Apparatuses and methods for dispensing materials Apparatuses and methods for the disbursement of relatively heavy materials, such as aggregate or wet compost out of a moveable container are provided. Material is conveyed within the container to a feeder that meters the material into an air stream. The air stream i... | 10/02/2007 |
| 6964543 | Apparatus and method for conveying and vacuuming fibrous insulation material A method and apparatus for conveying and vacuuming fibrous insulation material. A blower provides an air flow stream through an insulation feeder and a conveying hose for application of the insulation. The air flow stream velocity is selectively controlled responsiv... | 11/15/2005 |
| 6923601 | Conveyor device for particulate material A conveyor apparatus for a particulate material to be conveyed, e.g., a synthetic resin granulate or powder, with a plurality of handling devices (30, 31) for processing the conveyed material, a storage bin (20) for the material to be conveyed, a conve... | 08/02/2005 |
| 6120216 | Modular feeder system and feeder module for supplying electrical components to a pick up location A modular feeder system (1) for supplying electrical components to a pick-and-place machine (14). The feeder system (1) has a two dimensional array of electrical component feeder modules (3), an electrical component storage hopper (4), a pick up location ... | 09/19/2000 |
| 6068428 | Capsule train separation system for fluid capsule pipeline transporation Apparatus for spacing consecutive capsules of solid material traveling as a capsule train in a pipeline in which the capsules are carried by a fluid flowing through the pipeline includes a separation system interposed between upstream and downstream porti... | 05/30/2000 |
| 5752788 | System and method of pumping a constant volume of powder An apparatus and method for pumping a constant volume of powder to a powder spray gun includes a powder pump which meters the powder into a stream of air so that a constant volume of the air entrained powder is distributed to the spray gun. The invention ... | 05/19/1998 |
| 5562366 | Method and system for fast cycle transport of materials in dense phase A fast cycle system for transport of particulate material in dense phase has a feeder assembly dispensing material into a pulse pod assembly. The latter is connected to a pressurized pipeline and the pod of material is sent into the pipeline upon receipt ... | 10/08/1996 |
| 4995765 | Method of collecting wastes and system therefor A sanitary waste collection system and a method therefor which enable the free disposal of waste at various places in a building, and saves labor required for carrying and collecting the waste. The waste collection system includes charge ports provided at... | 02/26/1991 |
| 4911824 | Method for determining and controlling the amount of finely divided particulate solids added to a stream of fluid The amount of finely divided particulate solids added to a stream of fluid to form a mixture of the particulate solids and the fluid is determined by a method comprising (a) determining the temperature and quantity of fluid in a stream of fluid; (b) deter... | 03/27/1990 |
| 4710066 | Method and apparatus for pneumatically transporting filter rod sections and the like A sender propels filter rod sections at a constant or at a variable frequency into a pneumatic conveyor which delivers the sections into the magazine of a receiver serving to store a supply of sections next to a filter tipping machine. The operation of th... | 12/01/1987 |
| 4666462 | Control process for gasification of solid carbonaceous fuels Control process for producing an aqueous slurry of solid carbonaceous fuel having a desired solids concentration for feed to a partial oxidation gas generator by grinding together in a size reduction zone a recycle aqueous slurry stream comprising carbon-... | 05/19/1987 |
| 4659262 | Mobile self contained pneumatic conveying system A mobile, self-contained, pneumatic granular material conveying system is disclosed which comprises a trailer at least one granular material receiving and discharging kettle mounted thereon. An articulated vacuum arm is rotatably mounted on the rear porti... | 04/21/1987 |
| 4391860 | Device for the controlled feeding of powder material The invention contemplates a powder-feeding system for gas-propelled delivery of a powder to be controllably supplied, as to a flame-spraying gas torch or to a transferred-arc plasma torch. A fluidizing chamber receives (a) fluidizing-gas flow from below ... | 07/05/1983 |
| 4372478 | Fare collection system and components thereof A fare collection system using a bus fare box that receives and counts paper currency and paper transfers and tickets into a paper collection chamber and receives and counts coins into a coin collection chamber and receives and collects operating data int... | 02/08/1983 |
| 4353667 | Method of and apparatus for maintaining substantially constant a quantity of opened fibrous material A method of, and apparatus for, maintaining substantially constant a quantity of opened fibrous material delivered per unit of time, to a spinning preparatory machine, wherein a conveying air stream is generated by means of a fan operating at a given poin... | 10/12/1982 |
| 4352605 | Means for adding materials to a flowing stream Apparatus for adding materials, especially powdered or granular materials, to a flowing stream, e.g. of molten metal, comprises a nozzle for compressed gas, blowing the additive into the stream, and a detector that detects the stream and switches the flow... | 10/05/1982 |
| 4149684 | Pneumatic tube conveyor dispatcher A pneumatic tube conveyor dispatcher for converting a pneumatic tube free dispatch system into a pneumatic tube controlled dispatch system. The dispatcher comprises a housing having a rear portion which matingly engages an existing terminal of the free di... | 04/17/1979 |
| 4091940 | Silo unloader The invention provides a silo unloader having in connection with its spout assembly, comprised of its discharge spout and its underlying torque arm, features of improvement including means automatically functioning to not only facilitate raising and lower... | 05/30/1978 |