Closure fasteners – Operators with knobs or handles
Patent
1990-07-30
1991-02-26
Moore, Richard E.
Closure fasteners
Operators with knobs or handles
292201, 74 98, 74625, E05B 4700
Patent
active
049956582
ABSTRACT:
A door locking device wherein first and second field magnets are disposed at respective stationary positions opposite to each other through an axial air gap; the first field magnet has 2P (P: an integer of at least 2) contiguous poles of alternating N and S polarity and is formed in a torus shape; the second field magnet has n pole(s) (n: an integer of at least 1) of alternating N and S poles and is formed so as to define a space capable of receiving a swingable driven gear in the plane opposite to a rotatable coreless armature and hence not to become a complete torus form; a rotatable coreless armature is rotatably provided between the first and second field magnets; a commutator is provided on the rotatable coreless armature so as to rotate integrally therewith; brushes coming into movable contact with the commutator are provided on its corresponding stationary side; a driving gear rotating integrally with the rotatable coreless armature is disposed concentrically with the armature; a back yoke for the second field magnet is extended and bent to define a swingable driven gear-receiving space; the swingable driven gear is engaged with the driving gear so that it may be received and disposed in the swingable driven gear-receiving space; and an output lever is swingably attached to the output gear shaft.
REFERENCES:
patent: 4543839 (1985-10-01), Buchanan, Jr. et al.
patent: 4573723 (1986-03-01), Morita et al.
patent: 4706512 (1987-11-01), McKernon et al.
patent: 4779912 (1988-10-01), Ikeda et al.
patent: 4885954 (1989-12-01), Wanlass
Hamaguchi Osamu
Shiraki Manabu
Moore Richard E.
Sicoh Engineering Co., Ltd.
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