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1. (WO1983004348) ELECTROMAGNETIC ACTUATOR HAVING A PLIANT ARMATURE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1983/004348 International Application No.: PCT/US1982/000744
Publication Date: 08.12.1983 International Filing Date: 01.06.1982
IPC:
G03B 9/08 (2006.01) ,H02K 23/54 (2006.01) ,H02K 23/56 (2006.01) ,H02K 3/26 (2006.01) ,H02K 33/18 (2006.01)
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
9
Exposure-making shutters; Diaphragms
08
Shutters
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
K
DYNAMO-ELECTRIC MACHINES
23
Dc commutator motors or generators having mechanical commutator; Universal ac/dc commutator motors
54
Disc armature motors or generators
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
K
DYNAMO-ELECTRIC MACHINES
23
Dc commutator motors or generators having mechanical commutator; Universal ac/dc commutator motors
56
Motors or generators having the iron core separated from armature winding
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
K
DYNAMO-ELECTRIC MACHINES
3
Details of windings
04
Windings characterised by the conductor shape, form, or construction, e.g. with bar conductor
26
consisting of printed conductors
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
K
DYNAMO-ELECTRIC MACHINES
33
Motors with reciprocating, oscillating, or vibrating magnet, armature, or coil system
18
with coil system moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnet
Applicants: EASTMAN KODAK COMPANY[US/US]; 343 State Street Rochester, NY 14650, US
Inventors: LEE, James, Kelly; US
Agent: TREASH, Leonard, W., Jr.; 343 State Street Rochester, NY 14650, US
Priority Data:
Title (EN) ELECTROMAGNETIC ACTUATOR HAVING A PLIANT ARMATURE
(FR) DISPOSITIF D'ACTIONNEMENT ELECTROMAGNETIQUE AYANT UN INDUIT PLIANT
Abstract:
(EN) An electromagnetic actuator of the type having a thin armature (22) positioned for movement in a thin magnetic gap is less affected by frictional drag if the armature (22) is sufficiently pliant to contact the means (14, 18) forming the gap, and easily conform to the shape of the gap. The magnetic gap is substantially coextensive with the armature and provides mechanical support to the armature. In one embodiment of the invention, the pliant armature (116, 116') is employed in a reciprocating actuator for a photographic shutter/aperture. In another embodiment, the armature (22) is employed in a rotary DC motor of the pancake type. In another embodiment, the armature (212) is employed in a rotary DC motor of the cup or basket type.
(FR) Un dispositif d'actionnement électromagnétique du type ayant un induit mince (22) positionné pour avoir un mouvement dans un entrefer étroit est moins affecté par l'entraînement électrostatique si l'armature (22) est suffisamment pliable pour entrer en contact avec les moyens (14, 18) de formation de l'entrefer, et épouse aisément la forme de l'entrefer. L'entrefer s'étend sensiblement parallèlement à l'induit et sert de support mécanique à l'induit. Dans un mode de réalisation de l'invention, l'induit pliable (116, 116') est utilisé dans un dispositif d'actionnement à mouvement de va-et-vient pour un obturateur/diaphragme photographique. Dans un autre mode de réalisation, l'induit (22) est utilisé dans un moteur rotatif à courant continu du type plat. Dans un autre mode de réalisation, l'induit (212) est utilisé dans un moteur rotatif à courant continu du type à godet ou panier.
Designated States: JP
European Patent Office (EPO) (DE, FR, GB)
Publication Language: English (EN)
Filing Language: English (EN)