U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 6260903

Portable automobile partition

A portable partition for use in an automobile having a seat with a seat bench and a seat backrest.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Assignee: Hitachi Industrial Equipment Systems Co., Ltd.


Location: Tokyo, JP
No. of patents: 58

1    
NumberTitleIssue Date
8179249Air compressor
In an air compressor which can cope with an item to be replaced which is not a manufacturer's recommended item so as to enhance the safety, there is provided, as an example, an air compressor comprising a compressor body for compressing air, an item to be replaced (...
05/15/2012
8163052Safety cabinet
A safety cabinet adaptable for a variation in body height of a worker using the safety cabinet, that is, a safety cabinet which prevents various bacteria from proceeding from the outside of the safety cabinet into a working space of the safety cabinet and prevents b...
04/24/2012
8159820Electric power conversion system
In the present invention, miniaturization of an electric power conversion system is made possible while the reduction of a rise in temperature is achieved through a cooling operation by a cooling fan. The electric power conversion system is provided with a casing fo...
04/17/2012
8158048Mold for fine pattern transfer and method for forming resin pattern using same
A mold for forming a resin pattern using nanoimprint lithography according to the present invention comprises a main mold including a fine pattern of a protrusion and a depression intended to be transferred, and a spacer for forming a space between the protrusion of...
04/17/2012
8147234Imprint apparatus and method for fine structure lithography
An imprint apparatus for forming fine structure lithography comprises: a belt-like mold having a fine structure for imprint lithography formed on a surface of the belt-like mold; a cylindrical pressurizing mechanism including a pair of opposed rolls for pressurizing...
04/03/2012
8143985Power distribution transformer and tank therefor
Disclosed is a power distribution transformer having a body of the transformer, the body consisting of a coil and an iron core; a tank containing the body of the transformer and an insulation substance which fills an inner space of the tank; and an upper lid of the ...
03/27/2012
8136900Inkjet recording apparatus
An inkjet recording apparatus includes a nozzle, a charging electrode, a deflecting electrode, a storage device, and an authentication device. The nozzle atomizes a supplied ink into ink particles by exciting and ejecting the supplied ink. The charging electrode ele...
03/20/2012
8128863Iron core annealing furnace
An iron core annealing furnace that is used in annealing of an amorphous iron core requiring strict control of annealing temperature. There is provided an iron core annealing furnace comprising a furnace body fitted at its superior area with a heat source and a fan,...
03/06/2012
8120294Power transducer
The performance of a power transducer is improved while efficiently using a power semiconductor also by managing the permissible duty factor of the power semiconductor in the regenerative braking circuit provided in the power transducer. The user is allowed to set, ...
02/21/2012
8109752Imprinting stamper and method of manufacturing the same
An imprinting stamper which can transfer a microscopic pattern to a medium bearing a convex area or local projection, with high accuracy. A convexo-concave pattern is formed on a surface of the imprinting stamper. It includes a pattern layer having the convexo-conca...
02/07/2012
8069273Processing module
A processing module to use for a processing system having a plurality of processing modules connected via a communication line is comprising mounting position information for the processing module in the communication line; a unique logical address to indicate the p...
11/29/2011
8038391Vortex blower
In the present invention, a partition wall which partitions a discharge port and a suction port provided on a static passage, in the rotating direction, has a discharge side shape which is identical with the shape of blades, and has a positional relationship in whic...
10/18/2011
8033783Diagonal flow fan
The present invention aims at providing a diagonal flow fan or a silencer for the diagonal flow fan, which have the same outer shape as a suction port and are compact, and can also obtain an effective sound absorbing effect of a moderate frequency range. In the diag...
10/11/2011
7992974Inkjet recording apparatus
An inkjet recording apparatus includes a main body and a print head. The main body includes a mechanical portion and a control portion. The mechanical portion includes a pump that pressurizes or draws a liquid(s), such as an ink and/or a solvent, and a solenoid valv...
08/09/2011
7988435Oilless screw compressor and compressed air cooling unit
An oilless screw compressor incorporating water-cooled cooling units for cooling compressed air discharged from compressor bodies having a pair of male and female screw rotors which can be rotated in a contactless and oilless manner, the cooling units comprising a p...
08/02/2011
7978044Transformer
A transformer includes a frame type iron core having plate-shaped magnetic members. At least one of the plate-shaped magnetic members has a large width and forms a magnetic circuit in which a magnetic flux is concentrated. Each of the plate-shaped magnetic members i...
07/12/2011
7963741Motor and fan device using the same
The present invention provides a motor which includes a stator including a plurality of one-phase stators composed of a pair of stator cores having claw-type teeth and a coil for generating magnetic flux at the claw-type teeth, and a rotor for generating torque at a...
06/21/2011
7919941Semiconductor power converter
A semiconductor power converter includes a power converter for converting direct current to three-phase alternating current or vice versa; a means for detecting a current in an alternating current side of the power converter; a means for providing a current referenc...
04/05/2011
7915776Permanent magnet type electric rotary machine and compressor using the same
A permanent magnet type electric rotary machine includes a stator including a stator core having teeth and slots, and a rotor provided with permanent magnets as magnet poles in a rotor core. A pole core portion which between each of the permanent magnets and an oute...
03/29/2011
7906881Motor
It is desired to design a coreless motor in which a gap size is set to be as small as possible, and a magnet having a large energy product is used in order to increase the gap magnetic flux density since the coreless motor has no iron core so that the magnetic flux ...
03/15/2011
7904254Power conversion apparatus and method of estimating power cycle life
For applications in a facility where a power conversion apparatus is frequently started and stopped, a power conversion apparatus and a power cycle longevity estimation method are provided which improve an ease of use of the facility. The power conversion apparatus ...
03/08/2011
7902790Induction motor drive unit, motor drive system, and elevating system
A slip frequency is estimated from a current instruction or detected currents in an induction motor. Acceleration impossibility in an induction motor drive unit is determined, when the slip frequency exceeds the maximum torque generating slip frequency for the prede...
03/08/2011
7898138Rotary electric machine
In a rotary electric machine, for enhancing the reliability and reducing the size thereof, the rotary electric machine comprises a stator, and a rotor opposed to the stator and adapted to be rotated around a shaft, the rotor having an iron core formed therein with a...
03/01/2011
7887289Blower system
The invention provides a blower system of a high performance, which is constructed to have stabilized characteristics, a high efficiency, a reduced thickness and a reduced noise. A blower system according to the invention includes an impeller, a motor for rotating t...
02/15/2011
7845463Low-noise machine package
A conventional machine package faces problems concerned with costs, weight, etc. and also a problem of antinomy that an attempt to enhance the noise reducing performance increases the airflow resistance and then deteriorates the cooling performance. Providing a soun...
12/07/2010
7862314Screw compressor
A screw compressor rotatably accommodates, within a casing including a suction port and a delivery port, a pair of female and male rotors under the meshed state and compresses gas in the state where a liquid is mixed by pouring the liquid to the gas confined within ...
01/04/2011
7861115Multi-component system
To reset only the CPU in a component in an abnormal condition without affecting CPUs of components in a normal condition, a multi-component system, in which a plurality of components each including at least a CPU are connected via a common bus to each other, include...
12/28/2010
7855467Hybrid power generation of wind-power generator and battery energy storage system
A hybrid system using a wind-power generator and a battery energy storage system includes a unit to set a system constant output value, a unit to control power generated from the wind-power generator, a unit to gradually change an output target value between an outp...
12/21/2010
7808202Beat-less controller for permanent magnet motor
In a driving system for an inverter that uses a diode rectifying circuit to convert a single-phase or three-phase AC voltage to a desired DC voltage and drives a permanent magnet motor, a DC-voltage pulsating frequency is estimated from a pulsating frequency setting...
10/05/2010
7807117Recycle of electrical equipment
The present invention addresses a problem with conventional techniques for recycling electrical equipment that have a hardened epoxy resin and electroconductive material where a catalyst is degraded to an extent that it can no longer be reused when water is present ...
10/05/2010
7793880Multi-stage coil for transformer, and coil winding method and apparatus for manufacturing the same
At least two or more flat rectangular wires having been fed separately or simultaneously (two or more are superimposed) are integrated by being pinched in a width direction and a thickness direction by at least two or more pairs of rollers and are rolled and formed ...
09/14/2010
7791244Multiphase claw-pole type electric rotary machine, cogging torque adjustment system of the same, generator system, and motor system
A multiphase claw-pole type electric rotary machine has two or more phases-stator units. The stator units are arranged phase by phase in an axial direction of the electric rotary machine. Each phase stator unit comprises a pair of complementary-opposed claw pole cor...
09/07/2010
D622737Air compressor
08/31/2010
7782641Frequency converting apparatus and control method for the apparatus
A power converting apparatus and method includes a converter for converting AC power from a commercial power supply into DC power, a smoothing unit for smoothing the DC power from the converter, an inverter for converting an output of the smoothing unit into another...
08/24/2010
7768172Permanent magnet type electric rotary machine and compressor using the same
A permanent magnet type electric rotary machine includes a stator including a stator core having teeth and slots, and a rotor provided with permanent magnets as magnet poles in a rotor core. A pole core portion which between each of the permanent magnets and an oute...
08/03/2010
7745952Electric circuit module with improved heat dissipation characteristics using a fixing tool for fixing an electric apparatus to a heat sink
A power module constructs a pressurizing tool by laminating an elastic member as well as a DC positive-side wiring member and DC negative-side wiring member in which currents flow in opposite directions. The pressurizing tool presses a first fixing tool, and then th...
06/29/2010
7732503Recycle of electrical equipment
The conventional techniques for recycling an electrical equipment including a hardened epoxy resin and electroconductive material has involved conventional problems that a catalyst is degraded to an extent that it can be no longer reused when a water is contained in...
06/08/2010
7719226Highly responsive permanent magnet motor controller
Current command values are used instead of detected current values to estimate axis error by calculation. An axis error command value is generated according to a speed command value, and a difference between the generated axis error command value and the estimated a...
05/18/2010
7716405Computer system
A computer system, being a stack bus system in which a plurality of computer modules are stacked and connected to one another and being capable of automatically matching and allocating bus resources such as clocks and interrupts, is provided. In the computer system ...
05/11/2010
7714475Multiple phase claw pole type motor
In a multiple phase claw pole type motor which includes: a plurality of claw poles including a claw portion extending in an axial direction and having a magnetic pole surface facing a rotor in a state of being separated from the rotor by a small gap, a radial yoke p...
05/11/2010
1    
 
Sign InRegister
Username  
Password   
forgot password?