Patent US4868436A successfully refreshed from Google Patents.
US4868436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating electric machine with external rotor
Assignee: GRUPPO INDUSTRIALE ERCOLE MARELLI SpA A CORP OF REP OF ITALY
•
Filing: 1988-03-22
•
Granted: 1989-09-19
•
Expires: 2008-03-22
Abstract
Abstract A rotating electric machine with an external rotor constituted by an asynchronous motor with a cage rotor, in which the rotor structure, instead of being mounted protrudingly on a stationary axial supporting element is supported thereon by means of two end shields mounted by means of respective bearings on an axial supporting element, which is monolithic with a stationary supporting shield.
Inventors
- 👤 Mazzucchelli Attilio
- 👤 Masserini Natalino
- 👤 Vivaldi Silvano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:01
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/124; H02K1/00; H02K1/06; H02K1/12; H02K1/18; H02K1/187; H02K17/00; H02K17/02; H02K17/16; H02K5/16; H02K5/173; H02K5/1737; H02K5/22; H02K5/225
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
176 words
A rotating electrical machine comprising: a stationary support shield; a stationary axial supporting element in the form of a tubular sleeve monolithically integral at one end with said stationary support shield, said stationary axial supporting element having a cylindrical outer surface, said stationary axial supporting element being provided with an axial hole communicating with an outer side of the machine through an opening in said stationary support shield, said stationary support shield being further provided with a radial hole communicating with said axial hole and with an outer side of said stationary axial supporting element; active stator parts mounted externally to said stationary axial supporting element; a rotor structure rotatably mounted to said stationary axial supporting element to revolve externally and coaxially to said stator parts, said rotor structure comprising an active rotor part and support means including at least two rotor shields for supporting said active rotor part; and a pair of bearings disposed at opposite ends of said stationary axial supporting element to rotatably support said rotor shields on said stationary axial supporting element.
Claim 2
Dependent Claim
176 words
A rotating electrical machine comprising: a stationary support shield; a stationary axial supporting element in the form of a tubular sleeve monolithically integral at one end with said stationary support shield, said stationary axial supporting element having a cylindrical outer surface, said stationary axial supporting element being provided with an axial hole communicating with an outer side of the machine through an opening in said stationary support shield, said stationary support shield being further provided with a radial hole communicating with said axial hole and with an outer side of said stationary axial supporting element; active stator parts mounted externally to said stationary axial supporting element; a rotor structure rotatably mounted to said stationary axial supporting element to revolve externally and coaxially to said stator parts, said rotor structure comprising an active rotor part and support means including at least two rotor shields for supporting said active rotor part; and a pair of bearings disposed at opposite ends of said stationary axial supporting element to rotatably support said rotor shields on said stationary axial supporting element.
Claim 3
Dependent Claim
39 words
A rotating electrical machine according to claim 1 wherein said stator parts are included in a stator pack mounted externally to said stationary axial supporting element and fixed thereto at least in part by a tab and groove coupling.
Claim 4
Dependent Claim
59 words
A rotating electrical machine according to claim 1 wherein said rotor structure comprises a rotor cage, one of said rotor shields disposed opposite said stationary support shield being monolithically integral with said rotor cage, the other of said rotor shields proximate to said stationary support shield being insertingly mounted and fixed by means of screws to said rotor cage.
Claim 5
Dependent Claim
53 words
A rotating electrical machine according to claim 1, further comprising an elastomer gasket ring disposed between said stationary support shield and one of said rotor shields contiguous thereto, proximately to one of said bearings and on a side thereof opposite the other of said bearings, thereby completely enclosing said stator and said bearings.
Claim 6
Dependent Claim
195 words
A rotating electrical machine comprising: a stationary support shield; a stationary axial supporting element in the form of a tubular sleeve monolithically integral with said stationary support shield, said stationary axial supporting element having a cylindrical outer surface, said stationary axial supporting element being provided with an axial hole communicating with an outer side of the machine through an opening in said stationary support shield, said stationary axial supporting element being further provided with a radial hole communicating with said axial hole and with an outer side of said stationary axial supporting element; a stator pack including active stator parts, said stator pack being mounted externally to said stationary axial supporting element and fixed thereto at least in part by a tab and groove coupling; a rotor structure rotatably mounted to said stationary axial supporting element to revolve externally and coaxially to said stator parts, said rotor structure comprising an active rotor part and support means including at least two rotor shields for supporting said active rotor part; and a pair of bearings disposed at opposite ends of said stationary axial supporting element to rotatably support said rotor shields on said stationary axial supporting element.
Claim 7
Dependent Claim
195 words
A rotating electrical machine comprising: a stationary support shield; a stationary axial supporting element in the form of a tubular sleeve monolithically integral with said stationary support shield, said stationary axial supporting element having a cylindrical outer surface, said stationary axial supporting element being provided with an axial hole communicating with an outer side of the machine through an opening in said stationary support shield, said stationary axial supporting element being further provided with a radial hole communicating with said axial hole and with an outer side of said stationary axial supporting element; a stator pack including active stator parts, said stator pack being mounted externally to said stationary axial supporting element and fixed thereto at least in part by a tab and groove coupling; a rotor structure rotatably mounted to said stationary axial supporting element to revolve externally and coaxially to said stator parts, said rotor structure comprising an active rotor part and support means including at least two rotor shields for supporting said active rotor part; and a pair of bearings disposed at opposite ends of said stationary axial supporting element to rotatably support said rotor shields on said stationary axial supporting element.
Claim 8
Dependent Claim
59 words
A rotating electrical machine according to claim 5 wherein said rotor structure comprises a rotor cage, one of said rotor shields disposed opposite said stationary support shield being monolithically integral with said rotor cage, the other of said rotor shields proximate to said stationary support shield being insertingly mounted and fixed by means of screws to said rotor cage.
Claim 9
Dependent Claim
53 words
A rotating electrical machine according to claim 5, further comprising an elastomer gasket ring disposed between said stationary support shield and one of said rotor shields contiguous thereto, proximately to one of said bearings and on a side thereof opposite the other of said bearings, thereby completely enclosing said stator and said bearings.
Claim 10
Dependent Claim
280 words
A rotating electrical machine comprising: a stationary support shield; a stationary axial supporting element in the form of a tubular sleeve monolithically integral at one end with said stationary support shield, said stationary axial supporting element having a cylindrical outer surface, said stationary axial supporting element being provided with an axial hole communicating with an outer side of the machine through an opening in said stationary support shield, said stationary axial supporting element being further provided with a radial hole communicating with said axial hole and with an outer side of said stationary axial supporting element; a stator pack including active stator parts, said stator pack being mounted externally to said stationary axial supporting element and fixed thereto at least in part by a tab and groove coupling; a rotor structure rotatably mounted to said stationary axial supporting element to revolve externally and coaxially to said stator parts, said rotor structure comprising a rotor cage and at least two shields at opposite ends of said cage, one of said rotor shields disposed opposite said stationary support shield being monolithically integral with said rotor cage, the other of said rotor shields proximate to said stationary support shield being insertingly mounted and fixed by means of screws to said rotor cage; and a pair of bearings disposed at opposite ends of said stationary axial supporting element to rotatably support said rotor shields on said stationary axial supporting element, an elastomer gasket ring being disposed between said stationary support shield and one of said rotor shields contiguous thereto, proximately to one of said bearings and on a side thereof opposite the other of said bearings, thereby completely enclosing said stator and said bearings.
Claim 11
Dependent Claim
280 words
A rotating electrical machine comprising: a stationary support shield; a stationary axial supporting element in the form of a tubular sleeve monolithically integral at one end with said stationary support shield, said stationary axial supporting element having a cylindrical outer surface, said stationary axial supporting element being provided with an axial hole communicating with an outer side of the machine through an opening in said stationary support shield, said stationary axial supporting element being further provided with a radial hole communicating with said axial hole and with an outer side of said stationary axial supporting element; a stator pack including active stator parts, said stator pack being mounted externally to said stationary axial supporting element and fixed thereto at least in part by a tab and groove coupling; a rotor structure rotatably mounted to said stationary axial supporting element to revolve externally and coaxially to said stator parts, said rotor structure comprising a rotor cage and at least two shields at opposite ends of said cage, one of said rotor shields disposed opposite said stationary support shield being monolithically integral with said rotor cage, the other of said rotor shields proximate to said stationary support shield being insertingly mounted and fixed by means of screws to said rotor cage; and a pair of bearings disposed at opposite ends of said stationary axial supporting element to rotatably support said rotor shields on said stationary axial supporting element, an elastomer gasket ring being disposed between said stationary support shield and one of said rotor shields contiguous thereto, proximately to one of said bearings and on a side thereof opposite the other of said bearings, thereby completely enclosing said stator and said bearings.
References Cited (Backward Citations)
DE969793C
Cited
US2802957A
Cited
GB837779A
Cited
US3385510A
Cited
GB1356007A
Cited
DE2536094A1
Cited
US4032807A
Cited
DE2612537A1
Cited
US4471250A
Cited
US4607182A
Cited
US4621977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |