Source: http://www.google.com/patents/US6534892?dq=6377161
Timestamp: 2016-07-26 20:14:38
Document Index: 271128645

Matched Legal Cases: ['art 20', 'art 20', 'art 20', 'arts 20', 'arts 20', 'arts 20']

Patent US6534892 - Electrical rotating actuator for forming a shed in a weaving loom - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsStators for an electrical actuator of a type which may be used in weaving looms and weaving systems wherein a stack of armature plates having two-spaced sections are wrapped with an electrically conductive wire to create two coils afterwhich the stack is folded to sever severable bridge elements of the...http://www.google.com/patents/US6534892?utm_source=gb-gplus-sharePatent US6534892 - Electrical rotating actuator for forming a shed in a weaving loomAdvanced Patent SearchPublication numberUS6534892 B2Publication typeGrantApplication numberUS 09/773,617Publication dateMar 18, 2003Filing dateFeb 2, 2001Priority dateDec 24, 1997Fee statusPaidAlso published asCN1084405C, CN1221820A, DE69801479D1, DE69801479T2, EP0926283A1, EP0926283B1, US6237213, US20010004178Publication number09773617, 773617, US 6534892 B2, US 6534892B2, US-B2-6534892, US6534892 B2, US6534892B2InventorsDominique Braun, Pierre Bourgeaux, Patrick IltisOriginal AssigneeDominique Braun, Pierre Bourgeaux, Patrick IltisExport CitationBiBTeX, EndNote, RefManPatent Citations (17), Referenced by (6), Classifications (24), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetElectrical rotating actuator for forming a shed in a weaving loom
US 6534892 B2Abstract
What is claimed is: 1. An electrical rotating actuator for a weaving loom, the rotating actuator including a rotor rotatably disposed within a housing defined between first and second opposing parts of a core of a stator, a separate electrical winding provided about each of said first and second opposing parts of said core, each of said first and second opposing parts of said core being formed by a plurality of generally flat plates each having first and second end portions, said plates of each of said first and second core parts being assembled in side-by-side relationship with said plates of said first opposing part of said core being aligned with opposing plates of said second opposing part of said core, each of said opposing plates being formed from a single plate of generally uniform thickness so that said first and second end portions of each of said opposing plates are of equal thickness dimension relative to one another so as to maintain an equal spacing between adjacent plates, said first end portions of said plates of said first and second opposing parts of said core defining said housing and said second end portions of said plates of said first and second opposing parts of said core being formed so as to be imbricated relative to one another whereby the imbrication of said second end portions of said plates of said first and second opposing parts of said core facilitates electromagnetic contact between said plates.
The rotating actuator according to the invention functions efficiently when the two magnets 8 and 9 have differently oriented polarities, the value of the angle of shift being able in principle to be included between 0 and 180�. In practice, it is included between 60 and 120�. However, the value of 90� presents, for a two-phase actuator, the additional advantage that it enables the best electromagnetic yield and an optimized start to be obtained whatever the position of stop of the actuator.
The part 20 a of each plate 20 has a finger 20 e which extends substantially perpendicularly to the bridge 20 d. The other part 20 b does not comprise such a finger. The plates 20 are disposed head-to-tail, i.e. side by side, one plate out of two being pivoted through 180� about an axis ZZ′ which is substantially vertical in FIG. 3, with the result that each part 20 a of the plates located inside the stacks 4 b and 5 b adjoins two parts 20 b. while parts 20 b respectively adjoin parts 20 a of the adjacent plates. In this way the fingers 20 e of the different plates extend on each side of the bridges 20 d, the fingers of one plate extending on one side of the bridge that it comprises, while the fingers of the two adjacent plates extend, in the same direction, on the other side of the bridges that they comprise.
Certain flanges 21 bear studs 21 a around which the ends or certain intermediate parts of the wire intended to form the winding 4 a may be wound. The winding 4 a is wound around the armature 4 b by rotating the latter about an axis Y-Y′ shown in FIG. 6, with the result that the winding may be produced very rapidly and “flat”, i.e. by rotating the stack or armature 4 b about a single axis. The wire 22 passes from zone 20 f to zone 20 g, being wound, over at least one turn, around the studs 21 a. The stator element 4 may then be formed. The ends of the two halves of the rid winding 4 a at the notches 20 c, are brought closer by bending the plates 10 substantially perpendicularly to axis Y-Y′, imparting to the plates 20 two forces F1 and F2, shown in FIG. 7. These forces F1 and F2 induce the rupture of the cleavable bridges 20 d which are evacuated in a direction F3, while the fingers 20 e of the different plates 20 are imbricated in each other so as to constitute a single armature on the electromagnetic plane. In other words, the alternation of the fingers 20 e disposed on each side of the cleavable bridges 20 b, makes it possible to obtain, by wedging and cooperation of form, a single armature 4 b formed by the stack of the plates 20. When the two halves of the stator 4 are bent down towards each other, they define, as is visible in FIG. 8, the housing 10 for receiving the rotor 6. This housing defines the air gap of the stators 4 and 5.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS2792510 *Jan 25, 1956May 14, 1957Gen ElectricMotor structureUS3502922Mar 14, 1968Mar 24, 1970Barber Colman CoLaminated stator core structureUS4387313 *Apr 21, 1982Jun 7, 1983Mitsubishi Denki Kabushiki KaishaMolded submersible motorUS4554471 *Mar 13, 1985Nov 19, 1985U.S. Philips CorporationElectric motor having a U-shaped stator ironUS5069256Dec 8, 1989Dec 3, 1991Goodman Jr Robert MLoom harness system with spaced parallel rotating shaftsUS5402028 *Nov 13, 1991Mar 28, 1995Robert Bosch GmbhStator for an electric machineUS5619086Jan 31, 1995Apr 8, 1997Steiner; Robert E.Twin bobbin C-frame motors and methods for making sameUS5627424 *Jan 31, 1995May 6, 1997Steiner; Robert E.Twin bobbin four pole motors and methods for making sameUS5859486 *Nov 1, 1994Jan 12, 1999Mitsubishi Denki Kabushiki KaishaRotary motor and production method thereof, and laminated core and production method thereofDE7908193U1Mar 23, 1979Jan 5, 1983Gebrueder Junghans Gmbh, 7230 Schramberg, DeTitle not availableEP0353005B1Jul 24, 1989Mar 29, 1995Raymond Leslie PalmerLoom or like controlEP0750061A1Jun 13, 1996Dec 27, 1996Icbt DiederichsDevice to form a leno selvedge on loomsJPH01252141A * Title not availableJPH09268450A Title not availableJPS56112857A Title not availableJPS61167360A Title not availableWO1997033024A1Mar 7, 1997Sep 12, 1997Raymond Leslie PalmerDrive system* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS7687965Mar 30, 2010A. O. Smith CorporationElectric machine, stator assembly for an electric machine, and method of manufacturing the sameUS7821176Jun 9, 2008Oct 26, 2010A.O. Smith CorporationElectric motor, stator for an electric motor and method of manufacturing sameUS8344582Dec 17, 2007Jan 1, 2013Regal Beloit Epc Inc.Electric machine with teeth and bridgesUS20070241629 *Apr 13, 2007Oct 18, 2007A. O. Smith CorporationElectric machine, stator assembly for an electric machine, and method of manufacturing the sameUS20080093951 *Dec 17, 2007Apr 24, 2008A. O. Smith CorporationElectric machine with teeth and bridgesUS20080303369 *Jun 9, 2008Dec 11, 2008A. O. Smith CorporationElectric motor, stator for an electric motor and method of manufacturing same* Cited by examinerClassifications U.S. Classification310/216.037, 29/596International ClassificationH02K21/18, H02K15/02, D03C3/20, H02K16/04, H02K1/18, H02K1/14, D03C5/00Cooperative ClassificationH02K1/143, H02K16/04, D03C3/20, D03C5/00, H02K1/18, Y10T29/49009, H02K21/185, H02K15/022European ClassificationH02K21/18B, D03C5/00, H02K15/02B, H02K16/04, H02K1/18, H02K1/14B1, D03C3/20Legal EventsDateCodeEventDescriptionAug 20, 2006FPAYFee paymentYear of fee payment: 4Aug 12, 2010FPAYFee paymentYear of fee payment: 8Aug 20, 2014FPAYFee paymentYear of fee payment: 12RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services