Abstract:
The invention relates to an electrical device, comprising an electrically conductive element and a plastic part in contact with the conductive element, wherein at least a part of the electrically conductive element is made of a silver comprising composition and wherein the plastic part, partially or integrally, is made of polymer composition comprising a semi-aromatic polyamide (X) comprising units derived from aliphatic diamines and dicarboxylic acids, wherein (a) the dicarboxylic acids (A) consist of a mixture of 5-65 mole% aliphatic dicarboxylic acid and/or aromatic dicarboxylic acid other than terephthalic acid (A1) and 35-95 mole % terephthalic acid (A2); (b) the aliphatic diamines (B) consist a mixture of 10-70 mole% of a short chain aliphatic diamine with 2-5 C atoms (B1) and 30-90 mole % of a long chain aliphatic diamine with at least 6 C atoms (B2); and (c) the combined molar amount of terephthalic acid (A2) and the long chain aliphatic diamine (B2) is at least 60 mole %, relative to the total molar amount of the dicarboxylic acids and diamines.
Abstract:
PROBLEM TO BE SOLVED: To provide a silver-coated stainless steel strip for a movable contact in which the adhesion of plating is excellent, thus the service life of a switch is improved, and to provide its production method. SOLUTION: In the silver-coated stainless steel strip for a movable contact, a substrate of nickel, cobalt, a nickel alloy or a cobalt alloy is formed at least on a part of the surface of a stainless steel base material, and a silver or silver alloy layer is formed on the upper layer thereof, and a copper or copper alloy layer with a thickness of 0.05 to 2.0 μm is provided between the silver or silver alloy layer and the substrate. In the production method, it is subjected to heat treatment in a nonoxidizing atmosphere. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PURPOSE:To detect easily the position of a depressing point, by opposing partial- deposition conductor parts where a slender potential gradient layer and an insulation layer are arranged alternately to a full surface conductive layer at an interval to apply sequentially a voltage to the potential gadient layer. CONSTITUTION:A gold thin film layer is vapor-deposited on a film 2 on a substrate 1 to form a transparent condutive film. Then, the potential gradient layer comprising the partial-deposition conductor parts 3, 3', 3''... is formed into a slender rectangular shape at right angles to the face of paper by chemical etching, electrodes 4, 4', 4''... and 5, 5', 5''... are formed at both ends and the electrodes 4-4'' are grounded all together. Then, a film 7 laminated with a detecting layer 8 having electrodes 9 around the layer 8 is arranged oppositely via a spacer 6. A desired point of the film 7 is depressed while applying sequentially a voltage to the electrode 5 to measure the time when the voltage is detected from the electrode 9 and the amplitude of the voltage. Thus, the two-dimensional coordinates are obtained easily and simply.
Abstract:
The invention relates to an electrical device, comprising an electrically conductive element and a plastic part in contact with the conductive element, wherein at least a part of the electrically conductive element is made of a silver comprising composition and wherein the plastic part, partially or integrally, is made of polymer composition comprising a semi-aromatic polyamide (X) comprising units derived from aliphatic diamines and dicarboxylic acids, wherein (a) the dicarboxylic acids (A) consist of a mixture of 5-65 mole% aliphatic dicarboxylic acid and/or aromatic dicarboxylic acid other than terephthalic acid (A1) and 35-95 mole % terephthalic acid (A2); (b) the aliphatic diamines (B) consist a mixture of 10-70 mole% of a short chain aliphatic diamine with 2-5 C atoms (B1) and 30-90 mole % of a long chain aliphatic diamine with at least 6 C atoms (B2); and (c) the combined molar amount of terephthalic acid (A2) and the long chain aliphatic diamine (B2) is at least 60 mole %, relative to the total molar amount of the dicarboxylic acids and diamines.
Abstract:
An electromagnetic relay includes a fixed contact module including a fixed contact, a movable contact module including a movable contact disposed to face the fixed contact, an armature formed of a magnetic material and configured to move the movable contact module to bring the movable contact into and out of contact with the fixed contact, and an electromagnet configured to generate a magnetic field to move the armature. At least one of the fixed contact module and the movable contact module includes a joint at which different components are joined by riveting, and a film with a thermal conductivity higher than, the thermal conductivity of the fixed contact module and the movable contact module is formed on at least one of the fixed contact module and the movable contact module including the joint.
Abstract:
An actuator is provided for creating an electrical contact between two tracks of a printed circuit board. The actuator includes a polymer part, forming an arm including one contact end and one end for setting in motion; and a metal part, fixedly attached to the contact end, having a general shape of a cap.
Abstract:
A high-voltage multipolar circuit breaker including a first chamber for receiving gases, in communication with a first arc quenching chamber, and including a first aperture for exhausting gases to the exterior of the casing, the aperture being provided with a first downstream filtering device. The circuit breaker furthermore includes at least one second chamber for receiving gases, in communication with at least one second arc quenching chamber of another pole of the circuit breaker, the chamber itself being equipped with a second upstream device for filtering gases, the second chamber for receiving gases including a second aperture for exhausting gases to the exterior of the casing, the chamber being provided with a second downstream filtering device, the first chamber for receiving gases and the second chamber for receiving gases being separated fluidically one from the other by an impermeable wall.
Abstract:
An actuator is provided for creating an electrical contact between two tracks of a printed circuit board. The actuator includes a polymer part, forming an arm including one contact end and one end for setting in motion; and a metal part, fixedly attached to the contact end, having a general shape of a cap.
Abstract:
A conductive tracing for a keyboard including a pair of electrically conductive paths that are electrically isolated from each other. The pair of electrically conductive paths may each include conductive surfaces that are electrically coupled together. Each of the plurality of conductive surfaces of the pair of electrically conductive paths extend radially between a center portion and a peripheral portion of the conductive tracing. One or more of the conductive surfaces may include a pair of outer edges that are substantially parallel to a respective radial direction that the outer edges extend in. The conductive surfaces of one of the pair of electrically conductive paths may be complementary formed to the conductive surfaces of another of the pair of electrically conductive paths. The conductive tracing may be substantially symmetric about an axis that passes through the center portion of the conductive tracing.
Abstract:
There is disclosed a click disc switch assembly comprising a plate-like base having on it copper foil paths including (a) "row" paths each including a respective row of contact pads in a row-and-column matrix of such pads on the base, and (b) "column" paths corresponding to the columns of the matrix and including respective bonding pads. Overlying the columns of the matrix are click disc strips having end tabs welded to the bonding pads. Interposed between the strips and the "row" paths is an originally liquid and subsequently solidified coating deposited on the base to cover portions of the row paths while leaving uncovered their contact pads. The base and the strips include holes used to align the latter on the former.