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 |
| 7272961 | Washing machine A washing machine including a casing provided with an opening for introducing laundry into the washing machine; a tub supportably installed in the casing; a drum rotatably located in the tub; driving means for rotating the drum; and a door installed at the casing fo... | 09/25/2007 |
| 7032326 | Apparatus for driving drum of clothes dryer An apparatus for driving a drum of a clothes dryer having a drum for accommodating clothes to be dried in a cabinet, the apparatus comprises: a driving motor for generating a driving force to rotate the drum; and a roller connected to a rotational shaft of the drivi... | 04/25/2006 |
| 6922912 | Drying apparatus The invention provides drying apparatus including a first chamber for receiving articles to be dried and having an outlet, a second chamber having an outlet, and a fan having a fan inlet and a fan outlet, the fan inlet communicating with the outlet of the first cham... | 08/02/2005 |
| 6874250 | Clothes dryer A clothes dryer has a first four pole motor that rotates a rotatable drum in the dryer through a transmission system. The clothes dryer has a second two pole self speed regulated induction motor connected to a blower fan in the air passageway of the dryer. The secon... | 04/05/2005 |
| 6647643 | Clothes dryer A clothes dryer, for drying washed clothes, including a drum supported in a case rotatably, for drying clothes inserted to the inside of the case, a driving means installed in the case, for rotating the drum, a suction duct connected to a side of the drum... | 11/18/2003 |
| 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 |
| 6324771 | Drying tumbler with temperature limiting air flow bypass A drying tumbler is provided which includes a temperature bypass which helps prevent an excessive amount of heat from building up in the tumbler. The drying tumbler includes a rotatable drying chamber for containing items during drying. The drying tumber ... | 12/04/2001 |
| 6256903 | Coating dryer system The present invention relates to heating systems for drying wet coatings such as printing inks, paint, sealants, etc. applied to a substrate. In particular, the invention relates to a drying system in which a blower having an inlet directs a current of he... | 07/10/2001 |
| 6151795 | Flat material dryer A material drying apparatus having a sealable chamber for receipt of wet material, such as clothing. Material placed into the chamber is dried upon the evacuation of air from the chamber wherein moisture drawn from the material is condensed on a condensat... | 11/28/2000 |
| 5953833 | Coating dryer system A dryer system for drying a coating applied to a substrate includes a thermally conductive roll having a length and a peripheral surface for supporting the substrate and a plurality of energy emitters disposed within the conductive roll along the length o... | 09/21/1999 |
| 5806204 | Material dryer using vacuum drying and vapor condensation A material drying apparatus having a sealable chamber for receipt of wet material, such as clothing. In this embodiment clothing placed into the chamber is dried upon the evacuation of air from the chamber wherein moisture drawn from the clothes is conden... | 09/15/1998 |
| 5669157 | Apparatus and method for separating pieces of laundry A apparatus for separating pieces of laundry, comprising a drum which is rotatable about a substantially horizontal axis and with an open front and an open rear, which drum is accommodated in a housing, in which the rear of the drum is almost closed off b... | 09/23/1997 |
| 5617649 | Device and method for drying fluorescent material A device and method for drying a fluorescent material are provided. The device includes a container having a predetermined space for containing a fluorescent material, a first driver for rotating the container, a heater for heating the container, a vacuum... | 04/08/1997 |
| 5459945 | Heat recapturing, vacuum assisted evaporative drier A vacuum assisted system for drying articles of clothing with recaptured heat includes an evaporation chamber and a condensation chamber. The evaporation chamber is enclosed inside the condensation chamber. Heat transfers from the condensation chamber to ... | 10/24/1995 |
| 4816080 | Method of washing solids with liquified gases Solid materials are easily washed with liquified gas by placing the solid terial to be washed in a dry vessel under an inert atmosphere, evacuating the vessel, introducing the low temperature liquified gas solvent into the vessel, allowing the washing of ... | 03/28/1989 |
| 4811495 | Laundry drier An improved laundry drier which includes an outer case as well as an inner case and a tub which is rotationally driven. There is provided a heating housing having heating elements contained therein. A blower is located beneath the heating elements in the ... | 03/14/1989 |
| 4615125 | Clothes dryer A clothes dryer has, within a cabinet, a vacuum chamber in which a perforated drum is rotatable, a loading doorway in the cabinet, through which clothes to be dried can be fed into the drum, being provided with a door which, when closed, seals the vacuum ... | 10/07/1986 |
| 4603489 | Heat pump closed loop drying A dryer includes a rotating drum having an inlet and an outlet. A blower withdraws air from the outlet. A heat pump has an evaporator and condenser interconnected by a compressor and an expansion valve. The outlet of the condenser is connected to the inle... | 08/05/1986 |
| 4462170 | Sump for lint screen cleaner and storage system for a dryer An automatic lint screen cleaner in an automatic dryer is provided with a foreign objects sump which provides a means for removing foreign objects from the area of the lint screen cleaner while preventing lint build up in the sump.... | 07/31/1984 |
| 4305211 | Vacuum dryer A dryer for the drying of clothing and other articles by use of a vacuum. A vacuum is applied to the internal chamber of the rotating drum by means of a swash plate which rotates simultaneously at an inclined angle with respect to the rotational axis of t... | 12/15/1981 |
| 4033047 | Clothes dryer A clothes dryer includes a rotatable drum in which articles are dried by a heated air flowing from the rear side to the front side of the drum. The heated air is introduced into the annular air passage which is formed on the front side of the drum to have... | 07/05/1977 |
| 3938357 | Cleaning machine utilizing non-liquid cleaning agents Cleaning drapes, furs or other objects by the aid of powdered and/or granular cleaning agents involves a two part operation. During the first part of the cycle, the material to be cleaned and the cleaning agent are tumbled together in an oscillating drum.... | 02/17/1976 |