Mitsubishi Denki Kabushiki Kaisha

Osamu Iwabuchi

Hiroyuki Hama

Fumiaki Sano

Susumu Kawaguchi

Takao Yamauchi

Koji Ishijima

Takuho Hirahara

Kazuhiro Nakane

Hayato Suzuki

Toshinobu Kishimoto

In a bus bar connector, a ball bearing (20) having an inner wheel (21), an outer wheel (22) and plural balls (23) is provided between a guide rod (7) and a guide hole (3b) of the bus bar (3). When the center of gravity of the bus bar (3) is moved by electromagnetic force due to accidental overcurrent, a torque generated by friction force acting between the guide rod (7) and the inner wheel (22) rotates only the inner wheel (22) and is not conveyed to the bus bar (3).

Bus bar connector

A generator circuitry for connecting a generator to or disconnecting the same from a bus connected to a power supply. The circuitry comprising a first disconnector, a breaker and a second disconnector connected in series with one another between the bus and the generator further includes a detecting circuit to detect the generator output and an operating circuit to prohibit an action of opening the second disconnector during detection of the generator output by the detecting circuit. Since the disconnector is opened in the state where the generator output is not detected, the disconnector is released from the duty to interrupt the charge current flowing to the interelectrode capacitance of the breaker, whereby the use of a small-sized disconnector is rendered possible.

Generator circuitry

A discharging valve device for a compressor discharges gas compressed in a compression chamber outside said chamber against an urging force of a discharging valve to a valve seat and resistance of breaking a film of a lubricating oil deposited at and near a cacting area formed between the valve seat and the discharging valve. The discharging valve device comprises a discharging port communicated with a compression chamber, a valve seat formed at the peripheral portion of said discharging port and having a curvature in cross section, and a discharging valve which is forcibly in contact with a part of said valve seat so as to open and close said discharging port depending on pressure in said compression chamber, wherein a contacting width of the sealing part formed by the contact through an oil film between said discharging valve and said valve seat is smaller than a contacting width of an oil film formed in case of combination of a flat discharging valve with a valve seat having a uniform curvature in cross section.

Discharging valve device for a compressor

Growing community of inventors

Hyogo, Japan

Osamu Iwabuchi