Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Reexamination Certificate
2005-03-29
2005-03-29
Barrera, Ramon M. (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
C335S222000, C340S407100, C340S388100, C340S388300, C340S391100
Reexamination Certificate
active
06873234
ABSTRACT:
An improved electromagnetic actuator having a coil (10) on which a current is impressed, a magnet (20) that forms a magnetic circuit across a magnetic gap (G) with a magnet yoke (21), and having a diaphragm (11) that vibrates when a high-frequency current is impressed, and a vibration plate (22) that vibrates when a low-frequency current is impressed, with these parts enclosed within a basket (3) and the coil (10) placed within the magnetic gap (G). As one invention, a radial array of magnets, a vibration plate with a double-suspension structure, and a bottom plate of magnetic shielding material are placed in the basket to suppress the leakage of magnetic flux. As an invention to further improve the frequency characteristics by means of the mounting structure of the electromagnetic actuator, elastic packing (5, 7) is sandwiched between the basket of the electromagnetic actuator and the housing case of the portable electronic equipment, and also between the basket of the electromagnetic actuator and the mounting.
REFERENCES:
patent: 4087770 (1978-05-01), Kuhn et al.
patent: 5528697 (1996-06-01), Saito
patent: 5894263 (1999-04-01), Shimakawa et al.
patent: 6208237 (2001-03-01), Saiki et al.
patent: 01-171191 (1989-12-01), None
patent: 09-261917 (1997-10-01), None
patent: 09-275671 (1997-10-01), None
patent: 10-117472 (1998-05-01), None
International Search Report dated Jul. 21, 1998.
Kyouno Tsuneo
Ueda Minoru
Yoshinari Teruo
Barrera Ramon M.
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
LandOfFree
Electromagnetic actuator mounting structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electromagnetic actuator mounting structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetic actuator mounting structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3380614