Slot wedges for electrical machines
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Feb 28, 2012
Grant Date -
Apr 1, 2010
app pub date -
Sep 30, 2009
filing date -
Sep 30, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A wound core assembly for an electrical machine comprising a stack of laminations defining a core having a plurality of poles, the wound core assembly further comprising at least one slot wedge, wherein the slot wedge comprises a first portion arranged between adjacent poles and at least one second portion protruding from the first portion and abutting an end face of the core in the region of at least one of the poles. The at least one second portion may apply axial pressure to the end face to reduce the tendency of the laminations to splay axially outwards.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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NIDEC SR DRIVES LTD | EAST PARK HOUSE OTLEY ROAD HARROGATE NORTH YORKSHIRE HG3 1PR |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Gibson, Simon David | Knaresborough, GB | 1 | 8 |
# of filed Patents : 1 Total Citations : 8 | |||
Turner, Michael James | Leeds, GB | 18 | 251 |
# of filed Patents : 18 Total Citations : 251 |
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- 13 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Feb 06, 2017 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jan 08, 2017 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jan 08, 2017 |
Jan 08, 2017 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Aug 19, 2016 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Jan 08, 2013 | I | Issuance | |
Dec 02, 2010 | P | Published | |
May 14, 2010 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KITCHENER, RENATO;ROGOLL, GUNTHER;KESSLER, MICHAEL;SIGNING DATES FROM 20100204 TO 20100215;REEL/FRAME:024392/0131 Owner name: PEPPERL + FUCHS GMBH, GERMANY |
May 09, 2008 | F | Filing | |
May 11, 2007 | PD | Priority Date |

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