Patent US2967313A successfully refreshed from Google Patents.
Patent US3597644A successfully refreshed from Google Patents.
US3597644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamo electric machines and yoke assemblies therefore
Assignee: ZF International UK Ltd
•
Filing: 1969-09-03
•
Granted: 1971-08-03
•
Expires: 1989-09-03
Abstract
Abstract In a dynamo electric machine, the poles of the machine are recessed on their outer faces and are contained within a casing which is deformed into the recesses to thicken the poles. Some of the poles have tags for receiving bolts holding in position an end bracket defining one bearing for the rotor assembly. The poles may be in two portions, with the two portions defining a space for receiving the stator winding of the dynamo electric machine.
Inventors
- 👤 Kenneth Preece
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:56
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/14; H02K1/146; H02K1/148; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A dynamo electric machine comprising in combination a tubular sheet metal casing having a portion thereof defining a first bearing, a plurality of poles secured to said casing, each pole being recessed on its outer surface and portions of the casing being deformed so as to lie in said recesses and so increase the thickness of the poles, and end plate defining a second bearing, a rotor assembly supported by said bearings, integral tags on at least two of said poles, and securing means extending from said end plate into said tags to hold said end plate in position, each of said poles comprising a first sheet metal part secured to the casing and shaped to the required pole form and a second sheet metal part secured to the first part and shaped to define the face of the pole which is directed radially inwards, the second Part having an extension defining with the first part a space in which a winding is located.
Claim 2
Dependent Claim
164 words
A dynamo electric machine comprising in combination a tubular sheet metal casing having a portion thereof defining a first bearing, a plurality of poles secured to said casing, each pole being recessed on its outer surface and portions of the casing being deformed so as to lie in said recesses and so increase the thickness of the poles, and end plate defining a second bearing, a rotor assembly supported by said bearings, integral tags on at least two of said poles, and securing means extending from said end plate into said tags to hold said end plate in position, each of said poles comprising a first sheet metal part secured to the casing and shaped to the required pole form and a second sheet metal part secured to the first part and shaped to define the face of the pole which is directed radially inwards, the second Part having an extension defining with the first part a space in which a winding is located.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |