US5245240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Armature having a flat disk type commutator
Assignee: Individual
•
Filing: 1992-07-16
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Granted: 1993-09-14
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Expires: 2012-07-16
Abstract
Abstract In an armature wherein a plurality of base metals 15 electrically insulated from one another are solidly secured to the surface of a boss portion 10, carbon protective members 18 are jointed to the surfaces of the base metals 15, respectively, through a solder layer 19 and coil ends 5 of an armature core are jointed to the risers, an auxiliary electrode portion 17 is formed integrally with the riser 12 on each of the base metals 15.
Inventors
- 👤 Junichi Takasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:15
CPC Classifications
H; H02; H02K; H02K13/00; H02K13/04; H01; H01R; H01R39/00; H01R39/02; H01R39/04; H01R39/06; H01R39/32
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
301 words
An armature having a flat disk type commutator, comprising: a plurality of segments each of which includes an electrically conductive base metal having an upper and lower substantially flat surface and extending radially from a central axis; each of said segments being circumaxially disposed about said central axis and electrically insulated from one another, said electrically conductive base metal being solidly secured to a boss portion, said boss portion being formed from synthetic resin and integrally with each of said base metals, said boss portion further having a circular outer peripheral surface, said base metal further comprising a riser defining a main electrode portion and an auxiliary electrode portion, said main electrode portion and said auxiliary electrode portion being formed integrally on said base metal and each having outwardly facing surfaces, said main and auxiliary electrode portions being disposed side-by-side one another circumferentially and along said circular outer peripheral surface of said boss portion; each of said segments further comprising a protective member bonded to the upper substantially flat surface of said base metal by means of an electrically conductive and hot-melt bonding material, said protective member having a shape and size substantially equal to the upper substantially flat surface of said base metal; said riser forming a support and guide for welding a wire end of an armature coil thereto during a fusing treatment wherein a main electrode is brought into contact with said main electrode portion of said base metal and an auxiliary electrode is brought into contact with said auxiliary electrode portion of said base metal so that during the fusing treatment electrical current flows through the main electrode to the main electrode portion circumferentially through the base metal through the auxiliary electrode portion to the auxiliary electrode without passing through the bonding material during the fusing treatment.
Claim 2
Dependent Claim
301 words
An armature having a flat disk type commutator, comprising: a plurality of segments each of which includes an electrically conductive base metal having an upper and lower substantially flat surface and extending radially from a central axis; each of said segments being circumaxially disposed about said central axis and electrically insulated from one another, said electrically conductive base metal being solidly secured to a boss portion, said boss portion being formed from synthetic resin and integrally with each of said base metals, said boss portion further having a circular outer peripheral surface, said base metal further comprising a riser defining a main electrode portion and an auxiliary electrode portion, said main electrode portion and said auxiliary electrode portion being formed integrally on said base metal and each having outwardly facing surfaces, said main and auxiliary electrode portions being disposed side-by-side one another circumferentially and along said circular outer peripheral surface of said boss portion; each of said segments further comprising a protective member bonded to the upper substantially flat surface of said base metal by means of an electrically conductive and hot-melt bonding material, said protective member having a shape and size substantially equal to the upper substantially flat surface of said base metal; said riser forming a support and guide for welding a wire end of an armature coil thereto during a fusing treatment wherein a main electrode is brought into contact with said main electrode portion of said base metal and an auxiliary electrode is brought into contact with said auxiliary electrode portion of said base metal so that during the fusing treatment electrical current flows through the main electrode to the main electrode portion circumferentially through the base metal through the auxiliary electrode portion to the auxiliary electrode without passing through the bonding material during the fusing treatment.
Claim 3
Dependent Claim
23 words
The armature as set forth in claim 1, wherein said riser and said auxiliary electrode portion are formed by press-molding said base metal.
Claim 4
Dependent Claim
70 words
The armature as set forth in claim 1, wherein said riser and said auxiliary electrode portion are formed adjacent said circular outer peripheral surface of said boss portion and are integral with the upper and lower surface of said base metal so that the lower substantially flat surface of said base metal forming said auxiliary electrode portion is in facing relationship with said circular outer peripheral surface of said boss.
Claim 5
Dependent Claim
14 words
The armature as set forth in claim 1, wherein said base metal is copper.
Claim 6
Dependent Claim
16 words
The armature as set forth in claim 1, wherein said base metal is a copper alloy.
Claim 7
Dependent Claim
23 words
The armature as set forth in claim 3, wherein said riser is generally U-shaped for holding the wire end of said armature coil.
Claim 8
Dependent Claim
20 words
The armature as set forth in claim 1, wherein said electrically conductive and hot-melt bonding material comprises a solder layer.
Claim 9
Dependent Claim
263 words
An armature having a flat disk type commutator, comprising: a plurality of segments each of which include an electrically conductive base metal having an upper and lower substantially flat surface and extending radially from a central axis; each of said segments being circumaxially disposed about said central axis and electrically insulated from one another, said electrically conductive base metal being solidly secured to a boss portion, said boss portion being formed from synthetic resin and integrally with each of said base metals, said boss portion further having a circular outer peripheral surface, said base metal further including a pawl means insert--molded with said boss portion, a riser defining a main electrode portion and an auxiliary electrode portion; each of said segments further comprising a protective member bonded to the upper substantially flat surface of said base metal by means of an electrically conductive and hot-melt bonding material, said protective member having a shape and size substantially equal to the upper substantially flat surface of said base metal; said riser forming a support and guide for welding a wire end of an armature coil thereto during a fusing treatment wherein a main electrode is brought into contact with said main electrode portion of said base metal and an auxiliary electrode is brought into contact with said auxiliary electrode portion of said base metal so that during the fusing treatment electrical current flows through the main electrode to the main electrode portion through the base metal through the auxiliary electrode portion to the auxiliary electrode without passing through the bonding material during the fusing treatment.
Claim 10
Dependent Claim
263 words
An armature having a flat disk type commutator, comprising: a plurality of segments each of which include an electrically conductive base metal having an upper and lower substantially flat surface and extending radially from a central axis; each of said segments being circumaxially disposed about said central axis and electrically insulated from one another, said electrically conductive base metal being solidly secured to a boss portion, said boss portion being formed from synthetic resin and integrally with each of said base metals, said boss portion further having a circular outer peripheral surface, said base metal further including a pawl means insert--molded with said boss portion, a riser defining a main electrode portion and an auxiliary electrode portion; each of said segments further comprising a protective member bonded to the upper substantially flat surface of said base metal by means of an electrically conductive and hot-melt bonding material, said protective member having a shape and size substantially equal to the upper substantially flat surface of said base metal; said riser forming a support and guide for welding a wire end of an armature coil thereto during a fusing treatment wherein a main electrode is brought into contact with said main electrode portion of said base metal and an auxiliary electrode is brought into contact with said auxiliary electrode portion of said base metal so that during the fusing treatment electrical current flows through the main electrode to the main electrode portion through the base metal through the auxiliary electrode portion to the auxiliary electrode without passing through the bonding material during the fusing treatment.
References Cited (Backward Citations)
US1901955A
Cited
US3486056A
Cited
US3705997A
Cited
US3812576A
Cited
US3781981A
Cited
US3826894A
Cited
FR2310011A1
Cited
US4396358A
Cited
JPS58207840A
Cited
US4521710A
Cited
JPS60135053A
Cited
JPS62132670A
Cited
US4835430A
Cited
US5012149A
Cited
US5122975A
Cited
US5157299A
Cited
US5155405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-09-13 | 1997-03-15 | 1997-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-13 | 2001-03-15 | 2001-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-13 | 2005-03-15 | 2005-09-14 | $7700.00 | Window Closed / Lapsed |