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Title: US6109892: Positioning device for a sensor element of a miniature fan
[ Derwent Title ]
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Country: US United States of America

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6 pages

 
Inventor: Horng, Ching-Shen; Kaohsiung, Taiwan

Assignee: Sunonwealth Electric Machine Industry Co., Ltd., Kaohsiung, Taiwan
other patents from SUNONWEALTH ELECTRIC MACHINE INDUSTRY CO., LTD. (739733) (approx. 127)
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Published / Filed: 2000-08-29 / 1997-10-21

Application Number: US1997000954821

IPC Code: Advanced: F04D 25/08; H02K 29/08;
Core: F04D 25/02; H02K 29/06;
IPC-7: F04B 17/00;

ECLA Code: F04D25/08; H02K29/08;

U.S. Class: Current: 417/423.15; 310/012.19; 310/068.B; 310/216.057; 310/216.096; 310/254.1; 417/423.7;
Original: 417/423.15; 417/423.7; 310/254; 310/068.B;

Field of Search: 417/423.15,423.7 310/68 B,164,254

Priority Number:
1997-10-21  US1997000954821

Abstract: A positioning device for a miniature fan includes a coil seat having an axle tube, an upper polar plate assembly, a lower polar plate assembly, and a winding mounted between the upper polar plate assembly and the lower polar plate assembly. A circuit board is mounted to the axle tube and includes a sensor element for activating a rotor. The sensor element is located on a vertical line extending from an end edge of the lower polar plate assembly along a direction parallel to a longitudinal axis of the axle tube.

Attorney, Agent or Firm: Bacon & Thomas, PLLC ;

Primary / Asst. Examiners: Freay, Charles G.; Tyler, Cheryl J.

Maintenance Status: E2 Expired  Check current status
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C1 Re-examined

INPADOC Legal Status: Show legal status actions

Family: None

First Claim:
Show all 4 claims
What is claimed is:     1. A positioning device for a miniature fan, comprising:
  • a coil seat including an axle tube, an upper polar plate assembly, a lower polar plate assembly, a winding mounted between the upper polar plate assembly and the lower polar plate assembly, the lower plate assembly including a front end edge and a rear end edge; and
  • a circuit board mounted to the axle tube and including a sensor element adapted to activate a rotor, the sensor element located on a vertical line extending from one of said end edges of the lower polar plate assembly along a direction parallel to a longitudinal axis of the axle tube.


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Description: Show description

Forward References: Show 5 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (5)   |   Backward references (4)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 6pp US4773829  1988-09 Vettori  Etudes Techniques Et Representations Industrielles E.T.R.I. Centrifugal fan driven by an electronic-commutation direct-current motor
Get PDF - 9pp US5010263  1991-04 Murata  Mitsubishi Denki Kabushiki Kaisha Hall effect type sensing device
Get PDF - 5pp US5093599  1992-03 Horng   Non-brush D.C. motor with new improved stator
Get PDF - 5pp US5097170  1992-03 Baines  Johnson Electric S.A. Brushless D.C. electric motor
       
Foreign References: None

Other Abstract Info: DERABS G2000-548517 DERABS G2000-548517

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