Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Work or object holding type
Reexamination Certificate
2007-03-21
2008-12-09
Barrera, Ramon M (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Work or object holding type
C335S296000, C396S055000, C348S086000
Reexamination Certificate
active
07463128
ABSTRACT:
A lock mechanism for a stage apparatus, includes a stationary support board; a movable stage; a leaf spring supported by the stationary support board; a press portion and a pressed portion provided on the leaf spring and the movable stage, respectively, a frictional contacting member being fixed to at least one of opposed surfaces of the press portion and the pressed portion; an electromagnet for resiliently deforming the leaf spring in a lock releasing direction to disengage the frictional contacting member from the one of opposed surfaces of the press portion and the pressed portion; and a permanent magnet, fixed to the stationary support board, which magnetically attracts the leaf spring to hold the frictional contacting member and the one of opposed surfaces of the press portion and the pressed portion in a disengaged state when the leaf spring is resiliently deformed by the electromagnet.
REFERENCES:
patent: 5266988 (1993-11-01), Washisu
patent: 6718131 (2004-04-01), Okazaki et al.
patent: 2007/0093108 (2007-04-01), Nemots et al.
patent: 2007/0096477 (2007-05-01), Hirunuma et al.
patent: 10-39352 (1998-02-01), None
patent: 11-271833 (1999-10-01), None
patent: 3431020 (2003-05-01), None
patent: 2004-163648 (2004-06-01), None
P 3431020 B2, together with an English language Abstract and an English language computer-generated translation of the corresponding JP 2002-290816 A.
English language Abstract JP 10-39352.
English language Abstract JP 2004-163648.
English language Abstract JP 11-271833.
Barrera Ramon M
Greenblum & Bernstein P.L.C.
Hoya Corporation
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