Abstract:
An apparatus comprising a microelectromechanical system (MEMS) device. The MEMS device includes a substrate having an anchoring pad thereon and a structural element. The structural element has a beam that includes a first part and a second part. The first part is attached to both the anchoring pad and to the second part. The second part is movable with respect to the substrate and made of an electrically conductive material. Additionally, at least one of the following conditions hold: the first part is made of a material having: a first yield stress that is greater than a second yield stress of the electrically conductive material of the second part; a fatigue resistance that is greater than a second fatigue resistance of the electrically conductive material of the second part; or, a creep rate that is less than a second creep rate of the electrically conductive material of the second part.
Abstract:
The electro-mechanical relay comprises a base having a transversal axis and a rocking member operatively connected over the base. The rocking member is pivotable, with reference to the transversal axis, between a first position and a second position. The relay also comprises a first contact provided on the base at a location facing the rocking member and being spaced-apart from the transversal axis, and a second contact having at least a portion provided on the rocking member and being in registry with the first contact. The first and second contacts are configured and disposed to be electrically engaged at the first position of the rocking member, and electrically disengaged from each other at the second position thereof.
Abstract:
The present invention offers a switching device in which the intermediate part of shape-memory-alloy wire (17) is retained by actuator (9) connected to one end of link mechanism (4), and both ends of shape-memory-alloy wire (17) are fixedly retained by printed-circuit board (13). Both end parts of shape-memory-alloy wire (17) are fixed on printed-circuit board (13). This shape-memory-alloy wire (17) generates heat due to electric power supplied from the circuit, generates the shape-memory effect to deform. This causes actuator (9) to operate. On this occasion, because the electrically connected part is fixed, even for frequent repetitive operations, damage due to fatigue does not occur, thus improving reliability. In addition, the device can be simplified because it dispenses with a separate part such as a current-carrying wire, and not requiring a process such as an installation work for current-carrying wires offers low-cost switching devices.
Abstract:
A method for forming an activated trace on both of a first and second contact point surface or either a first or second contact point surface by applying vibration while applying an electric current, wherein a first contact point electrically is connected to a first external terminal and a second contact point electrically connected to a second external terminal being aligned opposed to said a first contact point in pair. And an electrical components such as a thermal protector, a cellular phone and a notebook personal computer in the like which adopted the process.
Abstract:
A novel shape memory alloy electrical switch is disclosed, including both momentary and especially a latching relay. The switch/relay disclosed is particularly useful in low power control of appliances, including i.a. refrigerators. Used with a microprocessor, microcontroller, or like device to control the shape memory alloy switch/relay, an adaptive control routine may be included which facilitates an especially low-power dissipation, highly effective appliance control module, especially suitable for refrigerators. The disclosed refrigerator control module can be manufactured at low cost with high reliability.
Abstract:
An actuator with an electrically heatable operating element, the housing of the operating element being held stationary in a mount of a base body, and a transfer element, which comprises two plastic molded parts, is provided between the piston and the element to be adjusted.
Abstract:
A micro-dimensioned shape memory alloy composite composed of a thin film of shape memory material and a substrate film. The substrate film does not require further processing and thus the composite can be used as a switch without removing any portion of the substrate on which the SMA is deposited. It is also shown that more effective switches can be manufactured by including as a component of the composite a stress compensating film.
Abstract:
An accelerating mechanism in an overcurrent relay for accelerating the speed of moving operation of a resetting bar or the speed of motion in a normally closed contact caused by the resetting bar. In the application of the relay to any resetting mechanism, which effects resetting with a movement of the resetting bar, the relay can eliminate a very hazardous abnormal operation that a resetting operation is stored in a toggle mechanism, thus improving the safety of the resetting mechanism.
Abstract:
A thermal overload relay is formed of a case for retaining the relay and having an insertion hole, an adjusting device for adjusting a working current of the relay and situated inside the insertion hole, and a cover for covering the adjusting device and situated in the insertion hole. The case includes a first coupling device formed around the insertion hole. The cover is formed of a transparent plate and includes a smooth upper surface, a second coupling device formed on a side surface and engageable with the first coupling device, and a handle formed on the upper surface of the cover for handling the cover. When the cover is disposed in the insertion hole, the first and second coupling devices are engaged, wherein the upper surface of the cover is located below an upper surface of the case. The cover can be fixed to the case such that the cover can be removed from the case or permanently fixed to the case.
Abstract:
The temperature sensitive apparatus controls fluid flow from one line to others and includes an elongated wire of a shaped memory wire that changes in length with changes in temperature extended into a valve housing for pivotally moving valve mechanism in the valve housing against the action of a spring from a fluid flow blocking position to a position permitting fluid flow upon heating the wire. The wire is connected to the valve mechanism and extends through a tube, both of which extend exterior of the valve housing with the major portion of the length of the wire being exterior thereof. The tube extends into a connecting member housing that is attached to the exterior of the valve housing and contains mechanism surrounding the tube to heat the wire. The tube is substantially thermally insulated from the interior of the valve housing. The heating mechanism may include a generator for an electric alternating field to induce a heating current in the wire, or an A.C. voltage coil to have a magnetic field which is linked to a closed electric circuit in which the wire is disposed.