US6005310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brushless linear motor slider
Assignee: MFM Tech LLC
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Filing: 1998-06-08
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Granted: 1999-12-21
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Expires: 2018-06-08
Abstract
Abstract A brushless, linear motor is provided in which the armature coils are cast in a resin to form an armature plate. A heat sink is attached along one edge of the plate with conductive pins (e.g. aluminum pins) extending through the plate and into the heat sink. Fans, attached to the heat sink, draw air across it in order to remove heat by convection. A wireless communications link transmits commutation data and/or armature position data to a motor controller.
Inventors
- 👤 Roger Mosciatti
- 👤 Roy Diers
- 👤 Frederick G. Moritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:46
CPC Classifications
H; H02; H02K; H02K29/00; H02K29/06; H02K29/08; H02K11/00; H02K11/0094; H02K11/20; H02K11/21; H02K11/22; H02K11/30; H02K11/33; H02K41/00; H02K41/02; H02K41/03; H02K9/00; H02K9/22; H02K9/227; H02P; H02P6/00; H02P6/20; H02P6/24; H02P6/28; H02K3/00; H02K3/04; H02K3/46; H02K3/50; H02K9/223
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
122 words
A slider assembly for a brushless linear motor, comprising in combination: a metal base; an armature coil having two legs and an end turn joining said legs; a recess formed in said metal base, said recess having a bottom surface and an interior wall surface shaped so as to conform the shape of the end turn of an armature coil disposed in said recess with a gap between the end turn and said interior wall; a metal cover disposed over said armature coil end turn; a gap between the bottom surface of said recess and said end turn, and a gap between the interior surface of said cover and said end turn; and a heat conducting resin disposed in each said gap.
Claim 2
Dependent Claim
122 words
A slider assembly for a brushless linear motor, comprising in combination: a metal base; an armature coil having two legs and an end turn joining said legs; a recess formed in said metal base, said recess having a bottom surface and an interior wall surface shaped so as to conform the shape of the end turn of an armature coil disposed in said recess with a gap between the end turn and said interior wall; a metal cover disposed over said armature coil end turn; a gap between the bottom surface of said recess and said end turn, and a gap between the interior surface of said cover and said end turn; and a heat conducting resin disposed in each said gap.
Claim 3
Dependent Claim
26 words
A slider assembly as in claim 1 wherein said metal base plate includes an upstanding post in said recess extending between opposing legs of said coil.
Claim 4
Dependent Claim
35 words
A armature assembly as in claim 1 further including a plurality of electrically insulating spacers in said recess to maintain each said gap prior to said heat conducting resin being disposed in each said gap.
Claim 5
Dependent Claim
18 words
A slider assembly as in claim 1 wherein said base plate and said cover plate are heat sinks.
Claim 6
Dependent Claim
18 words
A slider assembly as in claim 4 wherein base plate and said cover plate include heat conducting fins.
Claim 7
Dependent Claim
23 words
A slider assembly as in claim 5 wherein said heat conducting fins are orientated at right angles to the legs of said coils.
Claim 8
Dependent Claim
58 words
A slider assembly as in claim 6 further including an outboard heat sink attached to said base plate and said cover plate with outboard heat conducting fins orientated at right angles to the heat conducting fins on said base plate and said cover plate, and a fan attached to said assembly to force air across said outboard fins.
Claim 9
Dependent Claim
23 words
A slider assembly as in claim 7 wherein said fan forces air across said outboard fins through a gap in said outboard fins.
Claim 10
Dependent Claim
51 words
A slider assembly for a brushless, linear motor comprising in combination: a slider comprised of a plurality of coils embedded in a cast resin plate; a het sink attached to said plate; and a thermoelectric cooling rod embedded in said plate for conducting heat from said coils to said heat sink.
Claim 11
Dependent Claim
51 words
A slider assembly for a brushless, linear motor comprising in combination: a slider comprised of a plurality of coils embedded in a cast resin plate; a het sink attached to said plate; and a thermoelectric cooling rod embedded in said plate for conducting heat from said coils to said heat sink.
Claim 12
Dependent Claim
32 words
A slider assembly for a brushless, linear motor, comprising in combination: a slider comprised of a plurality of coils embedded in a cost resin plate; a thermoelectric cooler attached to said plate.
Claim 13
Dependent Claim
32 words
A slider assembly for a brushless, linear motor, comprising in combination: a slider comprised of a plurality of coils embedded in a cost resin plate; a thermoelectric cooler attached to said plate.
References Cited (Backward Citations)
US5519266A
Cited
US5723917A
Cited
US5770933A
Cited
US5783877A
Cited
US5777402A
Cited
US5751077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-12-20 | 2003-06-21 | 2003-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-20 | 2007-06-21 | 2007-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-20 | 2011-06-21 | 2011-12-21 | $7700.00 | Window Closed / Lapsed |