Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
1998-03-30
2001-05-15
Nguyen, Tran (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S080000
Reexamination Certificate
active
06232689
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a magnetic spring having a plurality of permanent magnets and, in particular but not exclusively, to an energy extracting mechanism provided with a magnetic spring having negative damping characteristics by utilizing a repulsive force of a plurality of permanent magnets.
2. Description of Related Art
Various pressure mechanisms are widely used today. A press for performing pressure molding upon insertion of a workpiece between upper and lower bases is a typical example of the pressure mechanisms. The pressure mechanisms generally make use of water or oil pressures, a mechanical structure, or both of them.
An exciter or vibration generator is used to artificially generate vibration to investigate vibration characteristics of a structure. Exciters of an electromotive type and those employing an unbalance mass or a cam are known.
Because the conventional pressure mechanisms or exciters are generally of a complicated structure and are, hence, heavy and costly, light and inexpensive ones have been desired.
SUMMARY OF THE INVENTION
The present invention has been developed to overcome the above-described disadvantages.
It is accordingly an objective of the present invention to provide an energy extracting mechanism provided with a magnetic spring having negative damping characteristics in order to realize inexpensive pressure mechanisms or exciters of a simple construction by effectively utilizing potential energy existing in a magnetic field.
In accomplishing the above and other objectives, the energy extracting mechanism according to the present invention includes first and second permanent magnets spaced from each other with the same magnetic poles opposed to each other, and a magnetic spring formed by the first and second permanent magnets. The magnetic spring provides negative damping characteristics or changes static magnetic energy by changing an opposing area of said first and second permanent magnets so that an output may be extracted from said second permanent magnet by applying an input to said first permanent magnet, making it possible to simplify the construction of the energy extracting mechanism.
Advantageously, the first permanent magnet is rotated, while the second permanent magnet is caused to slide. By so doing, a press, an exciter or the like can be manufactured at a low cost.
The second permanent magnet can be rotated continuously by means of a force acting thereon for returning the second permanent magnet to a position where potential energy thereof is minimum, kinetic energy thereof, and an inertia moment thereof by applying a load to the first permanent magnet to impart potential energy thereto and by oscillating the first permanent magnet at a balanced position with the second permanent magnet. The continuous rotation of the second permanent magnet can derive electromagnetic induction and, hence, is applicable to a dynamo or the like.
REFERENCES:
patent: 1724446 (1929-08-01), Worthington
patent: 2790095 (1957-04-01), Peek et al.
patent: 3088062 (1963-04-01), Hudimac
patent: 3609425 (1971-09-01), Sheridan
patent: 3638963 (1972-02-01), Van Leeuwen
patent: 3770290 (1973-11-01), Bottalico
patent: 3842753 (1974-10-01), Theodore et al.
patent: 3879622 (1975-04-01), Ecklin
patent: 3895245 (1975-07-01), Bode
patent: 3899703 (1975-08-01), Kinnison
patent: 3935487 (1976-01-01), Czerniak
patent: 3941402 (1976-03-01), Yankowski et al.
patent: 3952979 (1976-04-01), Hansen
patent: 3967146 (1976-06-01), Howard
patent: 3992132 (1976-11-01), Putt
patent: 4011477 (1977-03-01), Scholin
patent: 4189699 (1980-02-01), Burke, Jr.
patent: 4196365 (1980-04-01), Presley
patent: 4207773 (1980-06-01), Stahovic
patent: 4300067 (1981-11-01), Schumann
patent: 4371798 (1983-02-01), Kuroda
patent: 4432441 (1984-02-01), Kurokawa
patent: 4498038 (1985-02-01), Malueg
patent: 4502652 (1985-03-01), Breitbach
patent: 4583752 (1986-04-01), Breitbach
patent: 4595166 (1986-06-01), Kurokawa
patent: 4605194 (1986-08-01), Binnig et al.
patent: 4664352 (1987-05-01), Shibuki et al.
patent: 4710656 (1987-12-01), Studer
patent: 4802660 (1989-02-01), Engdahl
patent: 4913482 (1990-04-01), Hanai et al.
patent: 4950931 (1990-08-01), Goldenberg et al.
patent: 4969624 (1990-11-01), Ustelentsev et al.
patent: 5017819 (1991-05-01), Patt et al.
patent: 5120030 (1992-06-01), Lin et al.
patent: 5231336 (1993-07-01), Van Namen
patent: 5415140 (1995-05-01), Rigazzi
patent: 5419528 (1995-05-01), Carter et al.
patent: 5467720 (1995-11-01), Korenaga et al.
patent: 5487533 (1996-01-01), Kurita et al.
patent: 5584367 (1996-12-01), Berdut
patent: 5587615 (1996-12-01), Murray et al.
patent: 5633547 (1997-05-01), Coombs
patent: 3117377 (1982-12-01), None
patent: 36 01 182 (1987-07-01), None
patent: 0 393 492 (1990-10-01), None
patent: 2 006 958 (1979-05-01), None
patent: 2222915 (1990-03-01), None
patent: 2 296 068 (1996-06-01), None
patent: 58-89077 (1983-05-01), None
patent: 61-231871 (1985-03-01), None
patent: 63-149446 (1988-06-01), None
patent: 1-16252 (1989-01-01), None
patent: 434246 (1992-02-01), None
patent: 7217687 (1995-08-01), None
patent: 97/38242 (1997-10-01), None
Enoki Yoshimi
Fujita Etsunori
Kawasaki Seiji
Nakahira Hiroshi
Delta Tooling Co., Ltd.
Nguyen Tran
Wenderoth , Lind & Ponack, L.L.P.
LandOfFree
Energy extracting mechanism having a magnetic spring does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Energy extracting mechanism having a magnetic spring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy extracting mechanism having a magnetic spring will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2517391