Abstract: A conduit fitting is provided herein. The conduit fitting may be configured to couple to an electrical mechanical tubing (EMT) often used in a fire suppression system. The conduit fitting may include a first cylindrical section and a second conical section. The first cylindrical section and the second conical section can both include a slit extending partially through the conduit fitting.

Abstract: A conduit fitting is provided herein. The conduit fitting may be configured to couple to an electrical mechanical tubing (EMT) often used in a fire suppression system. The conduit fitting may include an upper cylindrical section and a lower conical section. The upper cylindrical section and the lower conical section can both include a slit extending partially through the conduit fitting.

Abstract: 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 preferably a monofilament or multifilament thread of natural or synthetic material, such as high strength polymer material. The arrangement further preferably includes a compression bracing structure such as a housing that bears compression forces between the components, while the securing element bears tension forces. The arrangement further preferably includes an electric resistance heating element that can be electrically energized and is arranged to apply heat to the thread, so as to melt or decompose and separate the thread and thereby release and separate the two interconnected components.

Abstract: 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 memory alloy latch (14), wherein the shape memory alloy latch is caused to deform upon heating so as to permit the armature to return to the first position.

Abstract: 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 &thgr;1, and a flexible metal strip (10) interposed between two studs (2a, 2b) fixed by one end to the wall (4) extending above the receptacle (20) and being provided in its free portion with means (14, 18-19) for the anchoring thereof in said thermofusible composition to bend the strip (10) against the two studs (2a, 2b). The receptacle (20) is advantageously extended by a heat probe (27) going to the core of the device (9). When the temperature of the device (9) exceeds &thgr;1 the anchoring means (14) are released from the thermofusible composition by the elastic return force of the strip (10) thereby opening the contact between the studs (2a, 2b). Application to a battery, in particular of the lithium-ion type.

Abstract: 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 between the link members and liquid at and above the predetermined temperatures such that the link member separates. Each of the link members includes a projection and a slot corresponding to the projection. The slot is spaced relative to the projection on the link member such that the projection of one of the link members is received in the slot of the other link member. Each of the link members also includes an opening with each opening on each of the link members being aligned to define a passage through the fusible link.

Abstract: 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 heating of the stator winding (14) causes opening of a switching device (18) connected in the supply circuit of the motor.

Abstract: 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 element by stressing the spring blade, and a torsion spring having an arm engageable with the spring blade to hold the contacts in engagement against the stress bias of the spring blade. A fusible pin retains the arm of the torsion spring in engagement with the spring blade, thus locking the contacts closed. Excessive heat in the appliance causes the pin to soften, thereby allowing the torsion spring to shear the pin and release the movable contact to open the heating element energizing circuit.

Abstract: 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 ambient temperature the fusible metal loses its bonding effect and permits operation of the trip mechanism. The combination fuse further comprises a heat dissipating means adapted to dissipate heat for raising the temperature of the fusible metal so as to release the combination fuse. The heat dissipation is initiated in response to a signal generated by the sensing of local or remote ambient conditions. The heat dissipating means is an electric resistance element incorporated in a circuit which is electrically separated from the two metal pieces and other components of the fire protection installation. The resistance element is connected in the circuit by members which upon tripping of the combination fuse, i.e.

Abstract: 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 tree lights or from the electrical circuit with any Christmas tree decoration. The decorative shape of the alarm housing has a plurality of openings consistent with such decorative shape for passing the sound therethrough, and further is provided with a resonance chamber. With closure of a bimetallic switch, the heat of the fire will melt the solder of the switch contacts so that with subsequent cooling, the solder will harden prior to opening of the bimetallic contacts, so that they will remain closed even after cooling.

Abstract: 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 means for activating an alarm.