US3649860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machines
Assignee: Reyrolle Parsons Ltd
•
Filing: 1971-03-30
•
Granted: 1972-03-14
•
Expires: 1991-03-30
Abstract
Abstract A dynamoelectric machine having a multiphase armature winding having conductors grouped according to phase the conductors of each phase group having axially extending portions protruding beyond the stator core and end portions cranked at an angle to the axially extending portions, adjacent conductors of each phase group having axially extending portions the lengths of which progressively increase from a first conductor of the group to the last conductor of the group, wherein the conductor having the longest axially extending portion of the phase group or subgroup is located adjacent the conductor having the shortest axially extending portion of the adjacent phase group and the angle through which the end portions of the conductors of said adjacent phase groups are cranked is chosen so that while adjacent end portions of conductors of a phase group contact one another, the end portions of conductors of adjacent phase groups are separated by a gap accommodating means for clamping the said end portions of the conductors.
Inventors
- 👤 Philip Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:30
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/46; H02K3/50; H02K3/505
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
195 words
A dynamoelectric machine having a stator core and a multiphase armature winding, said winding having conductors grouped according to phase the conductors of each phase group having axially extending portions protruding beyond the stator core and end portions cranked at an angle to the axially extending portions, adjacent conductors of each phase group, or of each of a number of subgroups together comprising a phase group, having axially extending portions the lengths of which progressively increase from a first conductor of the group or subgroup to the last conductor of the group or subgroup, wherein the conductor Having the longest axially extending portion of the phase group or subgroup is located adjacent the conductor having the shortest axially extending portion of the adjacent phase group or subgroup and the angle through which the end portions of the conductors of said adjacent phase groups or subgroups are cranked is chosen so that while adjacent end portions of conductors of a phase group or subgroup contact one another, the end portions of conductors of adjacent phase groups or subgroups are separated by a gap adapted to accommodate means for clamping the said end portions of the conductors.
Claim 2
Dependent Claim
195 words
A dynamoelectric machine having a stator core and a multiphase armature winding, said winding having conductors grouped according to phase the conductors of each phase group having axially extending portions protruding beyond the stator core and end portions cranked at an angle to the axially extending portions, adjacent conductors of each phase group, or of each of a number of subgroups together comprising a phase group, having axially extending portions the lengths of which progressively increase from a first conductor of the group or subgroup to the last conductor of the group or subgroup, wherein the conductor Having the longest axially extending portion of the phase group or subgroup is located adjacent the conductor having the shortest axially extending portion of the adjacent phase group or subgroup and the angle through which the end portions of the conductors of said adjacent phase groups or subgroups are cranked is chosen so that while adjacent end portions of conductors of a phase group or subgroup contact one another, the end portions of conductors of adjacent phase groups or subgroups are separated by a gap adapted to accommodate means for clamping the said end portions of the conductors.
Claim 3
Dependent Claim
50 words
A machine as claimed in claim 1, which has a double layer winding with conductors of one coil located radially above conductors of another coil, wherein the crank angle for the conductors in the upper coil is of the opposite sense to that of the conductors in the lower coil.
Claim 4
Dependent Claim
34 words
A machine as claimed in claim 2, wherein the crank angle for the conductors in the upper coil is of the same magnitude as the crank angle for the conductors in the lower coil.
Claim 5
Dependent Claim
54 words
A machine as claimed in claim 1, wherein the means for clamping the end portions of the conductors comprise packing situated in the gaps between the end portions of the conductors and two or more supports between which the packing and conductors are clamped, which supports are attached to the stator core or casing.
Claim 6
Dependent Claim
15 words
A machine as claimed in claim 4, wherein the supports comprise cones of nonmagnetic material.
Claim 7
Dependent Claim
40 words
A machine as claimed in claim 5, wherein conical segments arranged to support the packing are joined at their edges by bridge pieces to form boxes enclosing each phase group, the conical supports and bridge pieces being of nonmagnetic material.
Claim 8
Dependent Claim
36 words
A machine as claimed in claim 1, wherein the clamping means comprise two or more supports and the gaps between the end portions of the conductors are used for the passage of bolts between the supports.
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) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |