Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

Generators or Motors

Cooling-fan

Disk driving motor and chucking mechanism for disk drive apparatus

It is an object of the present invention to simplify the configuration of a disk driving motor ...

Bearing system with flexible bearing bracket

The present invention provides a bearing system comprising a bearing supported in a flexible ...

Internally damped stator, rotor, and transformer and a method of making

The present invention provides in one embodiment an internally damped core, wherein the core is ...

Electric rotating machine for vehicle

The present invention has been made to solve the above-discussed problems and has an object of ...

Electric motor construction

I claim: 1. An electric motor comprising a housing means, said housing means including first and ...

Insulated electrical conductor containing free-flowing mica

Accordingly, it is an object of this invention to provide an electrical product that utilizes ...

Molecular vacuum pump with a gas-cooled rotor

This and other objects of the invention, which will become apparent hereinafter, are achieved by ...

Hydrodynamic type porous oil-impregnated bearing and bearing device

Objects of the invention are: (1) To reduce the number of parts of the bearing to 2, while reducing ...

Tangential torque support

Referring to FIG. 1, a superconducting rotating machine 10 has a stator assembly 12 including ...

Alternator starter

The alternator starter according to one embodiment of the present invention is primarily designed ...

Cooling fan

Details

Inventors: Hsieh, Hsin-Mao;
Assignee:
Primary Examiner: Walberg; Teresa
Assistant Examiner: Fastovsky; Leonid
Attorney, Agent or Firm: Kamrath; Alan D. Rider Bennett, LLP

A cooling fan has a housing. A stator is securely mounted in the housing and has a coil, an upper pole sheet and a lower pole sheet coaxially provided at a top and a bottom of the coil respectively. A circuit board is provided beneath the lower pole sheet. An oil-retaining bearing is mounted in the stator. A rotator is received in the housing and has a cap covering the stator. A spindle is formed at the center of the cap and inserted through the oil-retaining bearing. A dustproof disk is provided between the circuit board and the lower pole sheet and is received in the cap of the rotator. A gap between the circuit board and the cap is sealed by the dustproof disk, and dust will not enter into the rotator to block the oil-retaining bearing.

DETAILED DESCRIPTION The main objective of the invention is to provide a cooling fan which can prevent dust from entering into an oil-retaining bearing.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

Related patents

	Using a micromachined magnetostatic relay in commutating a DC motor FIGS. 1A and 1B show a normally-open microelectronic mechanical system (MEMS) relay or switch 100. The switch 100 includes a cantilever beam 105 mounted on a substrate 1...
	Permanent magnet field-type rotating machine With the above problems in view, it is an object of this invention to provide a permanent magnet field-type rotating machine of a high efficiency having an internal ...
	Plain carbon steel hub for data storage device The present invention provides a rotating removable data storage device having a hub of coated plain carbon steel. By using plain carbon steel for the hub a number of ...
	Disk storage device with improved spindle torque and acceleration The foregoing and other objects are achieved by providing a disk storage device that utilizes an inner rotor spindle motor in which the spindle shaft is fixed to the ...
	Magneto generator An object of the present invention is to provide a magneto generator capable of blowing cooling air larger in amount than a conventional magneto generator on an armature ...
	Alternator for vehicles having permanent magnets in rotor The present invention addresses this problem, and has an object to improve electric power generated by an alternator without complicating manufacturing and assembling ...
	Compliant vibration isolation housing assembly for a data storage system The present invention is a vibration isolation apparatus and method for attenuating vibrations in a data storage system housing. A spindle motor assembly is mounted to a ...
	Apparatus for absorbing stator vibrations in computer storage apparatus Accordingly, one object of the present invention is to provide a rotary driving apparatus that controls vibration and noise caused by high speed rotation of a rotor. By ...
	Easy to manufacture covering device of a hard disk drive that dampens vibrations and seals internal components within Accordingly, the present invention has been made in an effort to solve the problems occuring in the related art, and a primary object of the present invention is to ...
	Magnetic disc unit An object of the present invention is to provide a rotary recording apparatus which can, on one hand, prevent flutter causing errors in positioning from increasing even ...

0.064
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved