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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 |
| 7396182 | Non-explosive device for releasably securing components An arrangement for releasably securing or connecting together at least two components includes a securing element that interconnects the components and that can be melted, thermally decomposed or otherwise separated by applying heat thereto. The securing element is ... | 07/08/2008 |
| 7148453 | Control unit with thermal protection and an electrical heating device comprising the control unit An overheating protection system for a control unit includes an interrupter element, which, in its initial position defined with respect to a circuit board, electrically connects the opposite facing ends of at least one track on the circuit board, and an actuating e... | 12/12/2006 |
| 7023674 | Overload protector for electrical motors An overload protection for electric motors, includes a one-piece suppression choke in which the connecting point to be broken is produced by means of at least one connecting point between the connection lug of the motor and a respective connecting element of the sup... | 04/04/2006 |
| 6603386 | Bi-stable microswitch including shape memory alloy latch A bi-stable microswitch (1) including a pair of contacts (6, 7) and an armature (4) movable between a first position and a second position to selectively make or break the pair of contacts, the armature being latched in the second position by a shape memo... | 08/05/2003 |
| 6348851 | Breaker switch and battery including the same Breaker switch arranged on a wall (4) of an electric device (9) including a receptacle (20), containing a thermofusible composition (25) having a softening point θ1, and a flexible metal strip (10) interposed between two studs (2a, 2b) fixed b... | 02/19/2002 |
| 5686878 | Temperature sensitive fusible link assembly having cooperating projections and slots A fusible link assembly including a pair of link members arranged in overlying relation and a thermally sensitive bonding material interposed between the link members with the bonding material being solid below a predetermined temperature to form a bond b... | 11/11/1997 |
| 4789800 | Fuse, in particular for electric motors The invention is directed to a fuse (1), in particular for electric motors (3), which includes a sensor (13) taking support upon the stator winding (14) of the electric motor (3), the sensor being made of a fusible material the melting of which on undue h... | 12/06/1988 |
| 4360725 | Overtemperature protector for an electrically heated appliance An overtemperature protector for an appliance having an electrical heating element includes a fixed contact, a movable contact carried by a spring blade and settable into engagement with the fixed contact to complete the energizing circuit to the heating ... | 11/23/1982 |
| 4103272 | Combination fuse, especially for fire protection installations A combination fuse, especially for fire protection installations. The fuse comprises two metal pieces bonded together by means of a fusible metal which during normal conditions prevents a trip mechanism to be operated. At a temperature above normal ambien... | 07/25/1978 |
| 4075614 | Christmas tree fire detector and alarm A fire detector and alarm is provided with means to mount it on a Christmas tree so as to be activated by the rapid buildup and intense heat of a Christmas tree fire. The power may be derived from a battery or the standard socket of a string of Christmas ... | 02/21/1978 |
| 3990074 | Kiln alarm activated by kiln shutoff An apparatus activates an alarm for a kiln operator when the heat and temperature provided by a kiln reach a predetermined level thereby activating a kiln shut-off weight and switch. The kiln shut-off weight rotates to engage a rod coupled to a switching ... | 11/02/1976 |
