US3885302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making dynamoelectric machinery
Assignee: ABB Inc USA
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Filing: 1974-09-27
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Granted: 1975-05-27
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Expires: 1994-09-27
Abstract
Abstract A dynamoelectric machine including stator and armature structures. The stator includes a yoke and a plurality of pole shoes carried thereby which include slots for receiving compensating coils. Strand-like elements are tightly packed within the slots between the compensating coils and the slot walls and are embedded within a hardened binder material, to support the coils against oscillation. Each pole shoe includes tip and base sections defining a pole face. The tip section comprises a plurality of lamination plates which have aligned apertures defining an opening extending through the tip section remote from the pole face. A connecting bar is disposed within this opening and has fastener elements mounted on each end thereof to clamp the lamination plates together. Threaded bolts are received in the connecting bar to draw the lamination plates toward the base section in uniform fashion. The yoke comprises a plurality of lamination plates which are arranged in mutually abutting relationship. A plurality of attachment flanges are welded across the outer edges of yoke plates to couple the plates together. The shoe base section is detachably secured to the yoke such that shoulder portions of the base section serve to clamp primary current windings in place against the yoke.
Inventors
- 👤 Walter F Boesel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:25
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/18; H02K1/185; H02K23/00; H02K23/02; H02K23/22; H02K3/00; H02K3/04; H02K3/18; H02K3/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
330 words
A method of assembling a dynamoelectric machine comprising the steps of: adjacently disposing together a plurality of yoke plates; orienting said yoke plates such that grooves along the outer peripheries thereof are aligned to form a plurality of grooves; inserting attachment flanges into said grooves and bonding said attachmend flanges to said yoke plates; assembling a plurality of pole shoes, each pole shoe being assembled by: adjacently disposing and securing together a plurality of base plates to define a base section, adjacently disposing together a plurality of tip plates, orienting said tip plates to define a tip section having a curved pole face, with apertures in said tip plates being aligned to define at least one opening extending through said tip section remote from said pole face, inserting a connector bar through said opening, clamping said tip plates together by clamping elements located at the ends of said connector bar, aligning said base and tip sections such that wall portions of said base and tip sections define a plurality of slots, inserting compensator coil windings in said slots, inserting a cluster of strand-like elements in each of said slots between said wall means and said compensator coil windings, inserting liquid binder material into said slots and allowing said binder material to cure So as to bond said elements together and to said wall means to define rigid braces supporting said compensator coil windings against oscillation in said slots, and connecting releasable fastener means between said base section and said connector bar to secure said tip section to said base section; inserting primary current windings around said base sections; and connecting releasable fastener means between said attachment flanges and said base sections to detachably secure said base sections to said yoke, with shoulder portions of each base section supporting said primary current windings; the arrangement being such that said primary current windings can be released from said base section in the absence of removing said tip section from said base section.
Claim 2
Independent Claim
330 words
A method of assembling a dynamoelectric machine comprising the steps of: adjacently disposing together a plurality of yoke plates; orienting said yoke plates such that grooves along the outer peripheries thereof are aligned to form a plurality of grooves; inserting attachment flanges into said grooves and bonding said attachmend flanges to said yoke plates; assembling a plurality of pole shoes, each pole shoe being assembled by: adjacently disposing and securing together a plurality of base plates to define a base section, adjacently disposing together a plurality of tip plates, orienting said tip plates to define a tip section having a curved pole face, with apertures in said tip plates being aligned to define at least one opening extending through said tip section remote from said pole face, inserting a connector bar through said opening, clamping said tip plates together by clamping elements located at the ends of said connector bar, aligning said base and tip sections such that wall portions of said base and tip sections define a plurality of slots, inserting compensator coil windings in said slots, inserting a cluster of strand-like elements in each of said slots between said wall means and said compensator coil windings, inserting liquid binder material into said slots and allowing said binder material to cure So as to bond said elements together and to said wall means to define rigid braces supporting said compensator coil windings against oscillation in said slots, and connecting releasable fastener means between said base section and said connector bar to secure said tip section to said base section; inserting primary current windings around said base sections; and connecting releasable fastener means between said attachment flanges and said base sections to detachably secure said base sections to said yoke, with shoulder portions of each base section supporting said primary current windings; the arrangement being such that said primary current windings can be released from said base section in the absence of removing said tip section from said base section.
Claim 3
Dependent Claim
53 words
A method according to claim 1 including the step of orienting said wall means such that at least one of said slots of each pole shoe has only one side defined by said base section and at least one other of said slots has at least two sides defined by said base section.
Claim 4
Independent Claim
326 words
A method of assembling a dynamoelectric machine comprising the steps of: adjacently disposing together a plurality of yoke plates; orienting said yoke plates such that grooves along the outer peripheries thereof are aligned to form a plurality of grooves; inserting attachment flanges into said grooves and bonding said attachment flanges to said yoke plates; assembling a plurality of pole shoes, each pole shoe being assembled by: adjacently disposing and securing together a plurality of base plates to define a base section, adjacently disposing together a plurality of tip plates, orienting said tip plates to define a tip section having a curved pole face, with apertures in said tip plates being aligned to define at least one opening extending through said tip section remote from said pole face, inserting a connector bar through said opening, clamping said tip plates together by clamping elements located at the ends of said connector bar, aligning said base and tip sections such that wall portions of said base and tip sections define a plurality of slots, inserting compensator coil windings in said slots, inserting a cluster of strand-like elements in each of said slots between said wall means and said compensator coil windings, inserting liquid binder material into said slots and allowing said binder material to cure so as to bond said elements together and to said wall means to define rigid braces supporting said compensator coil windings against oscillation in said slots, and connecting releasable fastener means between said connector bar and said yoke to secure said tip section to said yoke; inserting primary current windings around said base sections; and connecting releasable fastener means between said attachment flanges and said base sections to detachably secure said base sections to said yoke, with shoulder portions of each base section supporting said primary current windings; the arrangement being such that said compensator coil windings can be released from said slots in the absence of removing said base section from said yoke.
Claim 5
Independent Claim
326 words
A method of assembling a dynamoelectric machine comprising the steps of: adjacently disposing together a plurality of yoke plates; orienting said yoke plates such that grooves along the outer peripheries thereof are aligned to form a plurality of grooves; inserting attachment flanges into said grooves and bonding said attachment flanges to said yoke plates; assembling a plurality of pole shoes, each pole shoe being assembled by: adjacently disposing and securing together a plurality of base plates to define a base section, adjacently disposing together a plurality of tip plates, orienting said tip plates to define a tip section having a curved pole face, with apertures in said tip plates being aligned to define at least one opening extending through said tip section remote from said pole face, inserting a connector bar through said opening, clamping said tip plates together by clamping elements located at the ends of said connector bar, aligning said base and tip sections such that wall portions of said base and tip sections define a plurality of slots, inserting compensator coil windings in said slots, inserting a cluster of strand-like elements in each of said slots between said wall means and said compensator coil windings, inserting liquid binder material into said slots and allowing said binder material to cure so as to bond said elements together and to said wall means to define rigid braces supporting said compensator coil windings against oscillation in said slots, and connecting releasable fastener means between said connector bar and said yoke to secure said tip section to said yoke; inserting primary current windings around said base sections; and connecting releasable fastener means between said attachment flanges and said base sections to detachably secure said base sections to said yoke, with shoulder portions of each base section supporting said primary current windings; the arrangement being such that said compensator coil windings can be released from said slots in the absence of removing said base section from said yoke.
Claim 6
Dependent Claim
33 words
A method according to claim 3 wherein said step of clamping said tip plates together comprises the step of tightening a pair of nuts threadingly attached at opposite ends of said connector bar.
Claim 7
Dependent Claim
62 words
A method according to claim 4 wherein said step of connecting releasable fastening means between said connector bar and said yoke comprises the step of clamping first ends of a pair of anchor brackets to opposite ends of said connector bar by means of said nuts, and attaching second ends of said anchor brackets to said yoke by means of releasable bolts.
Claim 8
Dependent Claim
53 words
A method according to claim 5 including the step of orienting said wall means such that at least one of said slots of each pole shoe has only one side defined by said base section and at least one other of said slots has at least two sides defined by sAid base section.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |