30results about How to "Seek long life" patented technology

An electric device, comprising a plurality of detachable battery units 2, 3, 4, each comprising a battery pack 2B, 3B, 4B and a storage mechanism 11, 12, 13 for storing information about the charging and discharging status of the battery. A connection mechanism is provided to electrically connect and disconnect the electric device 1 in response to each battery cell being attached and detached. The device includes a driving mechanism 9 for driving a load, a charging mechanism 5 for charging the accumulators 2B, 3B, 4B with reference to information stored in the storage mechanisms 11, 12, 13 of the installed battery units 2, 3, 4, and The control means 6 controls the electric power supplied from each battery unit 2, 3, 4 to the drive means 9 with reference to the above-mentioned information.

Provided is a rotation support device for a pinion shaft, said device having a structure whereby it is possible to ensure that a rolling bearing on the opposite side from a pinion gear has sufficient axial rigidity while reducing the dynamic torque during operation and the starting torque upon operation startup. A single-row angular contact ball bearing (14a) is used as the rolling bearing on the opposite side from the pinion gear. The ratio (Ro/Bd) between the radius of curvature (Ro) of the outer race track (22a) and the diameter (Bd) of each ball (25a) is adjusted to be within the range of 0.52 < Ro/Bd <= 0.56, and the contact angle (alpha) is adjusted to be within the range of 35 DEG to 45 DEG.

The invention provides a diamond coating and cutting element, which has anexcellent adhesiveness in the cutting process of materials hard to be cut like aluminium alloys or graphites, CFRP materials and performs excellent wear resistance during a long-term use. Diamond films in thickness of 5-30Mum are coated on the surface of the diamond coating and cutting element composed by tungsten carbide-based hard alloys or titanium carbonitride-based cermet. Co particles with average diameter of 5-200nm are precipitated at the diamond film side of interface portion between the element body and the diamond films, and the proportion of Co particles is 0.1-20 atom%.

The invention provides a cutting tool covered with diamond. The tool substrate composed of tungsten carbide cemented carbide or titanium carbonitride base metallic ceramics is covered with a crystal diamond layer. Nanometer diamond film having average grain diameters of 1 to 50 nm and laminated alternatively at a lamination space of 0.2 to 2.0 micrometers and alternating lamination films of crystal diamond film having average grain diameters of 0.1 to 2 micrometers cover the crystal diamond layer. The shortest distance between the front end of a cutting blade to the crystal diamond layer is determined to be 3 to 15 micrometers. And a non-crystal carbon film having surface roughness less than 0.1 micrometer and thickness of 10 to 200 micrometers is formed on the surface layer of a front blade face of the nanometer diamond layer of the cutting blade.

With regard to a construction that a fan 41 is provided at one side of an engine 1 and covered by a fan casing 45, and an air cleaner 30 is arranged near the fan casing 45 and at a side of a cylinder head 5 on which an intake port 5a is disposed, a suction port 31a communicated with the inside of the fan casing 45 is provided in a main body 31 of the air cleaner 30. A barrier 46 is provided at a position facing to the suction port 31a in the air cleaner 30. A wall standing toward the fan casing 45 and the cylinder head 5 is formed on the outer surface of the main body 31 of the air cleaner 30. An air intake part is provided on one of side surfaces of a cover body 32 of the air cleaner 30 and the cover body 32 is constructed to be an equilateral polygon. An intake pipe 31k communicating the air cleaner 30 with the intake port 5a of the cylinder head 5 is constructed integrally with a main body 31 of the air cleaner 30.

A surge absorber in which an oxide layer excellent in chemical stability in the high temperature range and excellent in adhesion to main discharge electrodes is deposited on the main discharge electrodes. The surge absorber comprises a cylindrical ceramic body (4) on which conductive films (3) separated by a discharge gap (2) are formed, a pair of main discharge electrode members (5) opposedly disposed at both ends of the cylindrical ceramic body (4) and in contact with the conductive films (3), and a tubular ceramic body (7) in which the paired main discharge electrode members (5) are opposed, the cylindrical ceramic body (4) is contained, and a filling gas (6) is sealed. Each of the paired main discharge electrode members (5) has a projecting support (9). The opposed surfaces of the projecting supports (9) serve as main discharge surfaces (9A). Oxide films (9B) are formed on the main discharge surfaces (9A) by oxidation.

In an air filtering apparatus including a gas-liquid contact member (5) disposed in a housing (2), an electrolytic water supply pipe (17) for dropping electrolytic water to the gas-liquid contact member and an air blowing fan (7) for blowing air to the gas-liquid contact member to which the electrolytic water infiltrates and blowing out the air to a room, a first sheet member (76) having water retentivity for distributing the electrolytic water dropped from the electrolytic water supply pipe to the gas-liquid contact member is disposed above the gas-liquid contact member, and the first sheet member is equipped with recess portions (76D) at which scale accumulates when hardness components in the electrolytic water precipitate as the scale, or cut-out portions (92) through which the electrolytic water is positively discharged when hardness components in the electrolytic water precipitate as scale and accumulates on the first sheet member.

The invention prevents bias abrasion on a sliding element and a conductive pattern and prolongs the service life of a device. The linearly sliding variable resistor (10) of the invention comprises: a frame (a first shell 11 and a second shell 12) with a through hole (111), an operating shaft (13) inserted into the through hole (111) and moving along the axial direction, an insulated substrate (15) with a conductive pattern, a sliding element (16) sliding on the conductive pattern, a sliding element seat (17) keeping the sliding element (16) and sliding along with the axial movement of the operating shaft (13), and a force application component (14) applying a force on the sliding element seat (17) to the initial position. The linearly sliding variable resistor is characterized in that the sliding element seat (17) keeps the operating shaft (13) through a vibration absorber absorbing the vibration in the direction crossing with the axial direction.