An electrical connection includes a first electrical conductor assembly having a first electrical conductor with a first electrical conductor surface and a second electrical conductor assembly having a second electrical conductor with a second electrical conductor surface which is engaged with the first electrical conductor surface such that the second electrical conductor assembly and the first electrical conductor assembly reciprocate relative to each other along a path. The first electrical conductor surface and the second electrical conductor surface provide electrical communication between the first electrical conductor assembly and the second electrical conductor assembly along the path. The second electrical conductor surface has a first area of gold having a first magnitude of hardness which engages the first electrical conductor surface and also has a second area of gold having a second magnitude of hardness which is greater than the first magnitude of hardness.

An electrical connection includes a first electrical conductor assembly having a first electrical conductor with a first electrical conductor surface and a second electrical conductor assembly having a second electrical conductor with a second electrical conductor surface which is engaged with the first electrical conductor surface such that the second electrical conductor assembly and the first electrical conductor assembly reciprocate relative to each other along a path. The first electrical conductor surface and the second electrical conductor surface provide electrical communication between the first electrical conductor assembly and the second electrical conductor assembly along the path. The second electrical conductor surface has a first area of gold having a first magnitude of hardness which engages the first electrical conductor surface and also has a second area of gold having a second magnitude of hardness which is greater than the first magnitude of hardness.

A resistance substrate contains a substrate and a resistance part that is formed on an upper surface of the substrate by printing. The resistance part is formed into an arc shape (a C shape) so that a width of the resistance part continually changes. The resistance part is formed so that a part having a narrow width becomes thick and a part having a narrow width becomes thin.

A resistance substrate contains a substrate and a resistance part that is formed on an upper surface of the substrate by printing. The resistance part is formed into an arc shape (a C shape) so that a width of the resistance part continually changes. The resistance part is formed so that a part having a narrow width becomes thick and a part having a narrow width becomes thin.

A printed circuit board having conductor tracks formed on one side of a substrate. The substrate is able to be cohesively bonded at a contact face to a cover for protecting the conductor tracks. In this case, the substrate includes a step, which forms a barrier with respect to an auxiliary material for promoting the cohesive bond, in order to prevent any wetting of the conductor tracks with the auxiliary material. A sensor having a printed circuit board for use in a fuel filling level measurement system of a vehicle.

A resistance substrate contains a substrate and a resistance part that is formed on an upper surface of the substrate by printing. The resistance part is formed into an arc shape (a C shape) so that a width of the resistance part continually changes. The resistance part is formed so that a part having a narrow width becomes thick and a part having a narrow width becomes thin.

A variable-resistor plate for a liquid level detector includes: a substrate main body that is formed from a material having insulation properties; sliding electrodes that are spaced from each other and are arranged side by side along a slide locus of a slide member, which is displaced relative to the plate in accordance with a liquid surface level, on the substrate main body; a resistor that mutually connects the sliding electrodes to generate electric resistances between the sliding electrodes and that enables the correction of the variations in resistance value among individuals through adjustment of a shape of the resistor on the substrate main body; an adjustment contact part that is formed at at least one sliding electrode and is located to be deviated from the slide locus of the slide member, a measuring part of a measuring device being brought into contact with the adjustment contact part; and a pair of correction contact parts that are formed at a correction electrode, which is provided on the substrate main body, the measuring part being brought into contact with each correction contact part.

A variable-resistor plate for a liquid level detector includes: a substrate main body that is formed from a material having insulation properties; sliding electrodes that are spaced from each other and are arranged side by side along a slide locus of a slide member, which is displaced relative to the plate in accordance with a liquid surface level, on the substrate main body; a resistor that mutually connects the sliding electrodes to generate electric resistances between the sliding electrodes and that enables the correction of the variations in resistance value among individuals through adjustment of a shape of the resistor on the substrate main body; an adjustment contact part that is formed at at least one sliding electrode and is located to be deviated from the slide locus of the slide member, a measuring part of a measuring device being brought into contact with the adjustment contact part; and a pair of correction contact parts that are formed at a correction electrode, which is provided on the substrate main body, the measuring part being brought into contact with each correction contact part.

A rotary controller locking cap including a cap body having a longitudinal axis, a bore extending partially through the cap body along the longitudinal axis such that the cap body has an opening on a first side and is closed on an opposite second side, and an internally threaded portion arranged in the bore at least at the opening. The internally threaded portion is structured and arranged for threaded engagement with a threaded collar of a rotary controller. The bore is structured and arranged to accommodate an output shaft of the rotary controller therein while not contacting the output shaft when the cap body is engaged with the threaded collar. The cap body when engaged with the threaded collar is operable to preclude adjustability of the output shaft of the rotary controller.

A rotary controller locking cap including a cap body having a longitudinal axis, a bore extending partially through the cap body along the longitudinal axis such that the cap body has an opening on a first side and is closed on an opposite second side, and an internally threaded portion arranged in the bore at least at the opening. The internally threaded portion is structured and arranged for threaded engagement with a threaded collar of a rotary controller. The bore is structured and arranged to accommodate an output shaft of the rotary controller therein while not contacting the output shaft when the cap body is engaged with the threaded collar. The cap body when engaged with the threaded collar is operable to preclude adjustability of the output shaft of the rotary controller.