Metal working – Method of mechanical manufacture – Electrical device making
Patent
1996-02-09
1998-07-14
Bray, W. Donald
Metal working
Method of mechanical manufacture
Electrical device making
29605, 29831, 335 78, 3612831, 361819, H01F 414, H01H 1500
Patent
active
057785139
ABSTRACT:
A micro-relay has a flexible monocrystalline structure which is moved by an electromagnetic force to establish a connection between relay contact elements. The micro-relay includes a substrate having a magnetic pathway and one or more coils located over the magnetic pathway. A first contact pad is coupled to the substrate. The monocrystalline structure is suspended over the substrate. A second contact pad and pole pieces are coupled to the monocrystalline structure such that the second contact pad is positioned over the first contact pad, and the pole pieces are located over the coils. A current is applied to the coils to generate an electromagnetic force which flexes the monocrystalline structure toward the substrate, thereby causing the second contact pad to touch the first contact pad. In one embodiment, the coils include insulating spacers located adjacent to the innermost and outermost traces to prevent shorting.
REFERENCES:
patent: 4429349 (1984-01-01), Zachary
patent: 4826131 (1989-05-01), Mikkor
patent: 5025346 (1991-06-01), Tang et al.
patent: 5153543 (1992-10-01), Hitachi et al.
patent: 5374792 (1994-12-01), Ghezzo et al.
patent: 5398011 (1995-03-01), Kimura et al.
patent: 5472539 (1995-12-01), Saia et al.
patent: 5475353 (1995-12-01), Roshen et al.
Patent Abstracts of Japan--vol. 014, No. 381 (P-1093), 16 Aug. 1990 & JP 02 141912 A (Yamaha Corp), 31 May 1990, see abstract.
Patent Abstracts of Japan--vol. 014, No. 165 (P-1030), 30 Mar. 1990 & JP 02 021414 A (NEC Corp), 24 Jan. 1990, see abstract.
Hosaka, et al, "Electromagnetic microrelays: concepts and fundamental characteristics", Sensors and Actuators, A. 40, 1994, pp. 41-47.
Drake, et al, "An Electrostatically actuated Micro-Relay", Transducers '95--Eurosensors IX, 329-B10, 4 pages.
Yao, et al, A Surface Micromachined Miniature Switch for Telecommunications Applications with Signal Frequencies From DC to 4 GHZ, Transducers '95--Eurosensors IX conference Sweden, 1995, pp. 384-387.
O'Connor, "Miniature Motors for Future PCS", Mechanical Engineering, 1995, pp. 63-65.
Coughlin, et al, "Design Trends in Head/gimbal Assemblies for hard-disk drives", May/Jun. 1995 Data Storage, pp. 23-31.
Tang, et al, "Silicon Micromachined Electromagnetic Microactuators for Rigid Disk Drives", Intermag Conference of 1995, pp. 1-3.
Miu, et al, "Silicon Micromachined SCALED* Technology", IEEE , 1995, pp. 234-239.
Miu, et al, "Silicon Microstructures and Microactuators for Compact Computer Disk Drives", IEEE, 1994, pp. 52-57.
Miu, "Silicon Microactuators for Rigid Disk Drives", Data Storage, Jul./Aug. 1995, pp. 33-40.
Ahn, et al, "A Fully Integrated Micromagnetic Actuator With a Multilevel Meander Magnetic Core", IEEE, 1992, p. 18.
Miu, et al, "Silicon Microgimbals for Super-Compact Magnetic Recording Rigid Disk Drives", ISSN, 1993, pp. 139-152.
Temesvary, et al, "Design, Fabrication, and Testing of Silicon Microgimbals for Super-Compact Rigid Disk Drives", Journal of Microelectromechanical Systems, vol. 4, No. 1, 1995 Mar., pp. 18-27.
Miu Denny K.
Tang Weilong
Temesvary Viktoria A.
Bray W. Donald
Miu Denny K.
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