US4549105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submergible motor including circuit element encased in molded plug
Assignee: Mitsubishi Electric Corp
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Filing: 1984-01-09
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Granted: 1985-10-22
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Expires: 2004-01-09
Abstract
Abstract A submergible motor for use in a well of water, for example, comprises a motor winding, an insulated power supply conductor for connection to a power supply, an insulated motor conductor connected to the motor winding, and a circuit element electrically connected between the power supply and motor conductors, the circuit element being encased in a molded material in a water-resistant manner and connected to the power supply and/or motor conductors.
Inventors
- 👤 Sakuei Yamamoto
- 👤 Mitsuhiro Nishida
- 👤 Hiroshi Inao
- 👤 Noboru Tashiro
- 👤 Kiyoshi Hani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:20
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/22; H02K5/225; B; B22; B22D; B22D11/00; B22D11/04; B22D11/0401; H01; H01R; H01R13/00; H01R13/46; H01R13/52; H01R13/523; H02K11/00; H02K11/20; H02K11/26; H02K11/28; H02K11/40; H02K5/08; H02K5/12; H02K5/132; Y; Y02; Y02A; Y02A30/00; Y02A30/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
114 words
A submergible motor, comprising; a motor winding, an insulated power supply conductor for connection to a power supply, an insulated motor conductor connected to said motor winding, and circuit means electrically connected between said power supply and motor conductors, said circuit means comprising a lightning arrester and starter circuit means arranged serially between said power supply and motor conductors, said lightning arrester and starter circuit means being encapsulated in a solidified molded material in a water-resistant manner and being integrally formed with at least one of said power supply and motor conductors, and a tubular metallic sleeve for encasing said circuit means and said encapsulating material, and engaging a bracket portion of said motor.
Claim 2
Dependent Claim
114 words
A submergible motor, comprising; a motor winding, an insulated power supply conductor for connection to a power supply, an insulated motor conductor connected to said motor winding, and circuit means electrically connected between said power supply and motor conductors, said circuit means comprising a lightning arrester and starter circuit means arranged serially between said power supply and motor conductors, said lightning arrester and starter circuit means being encapsulated in a solidified molded material in a water-resistant manner and being integrally formed with at least one of said power supply and motor conductors, and a tubular metallic sleeve for encasing said circuit means and said encapsulating material, and engaging a bracket portion of said motor.
Claim 3
Dependent Claim
19 words
A submergible motor according to claim 1, further comprising means for grounding said lightning arrester to said metallic sleeve.
Claim 4
Dependent Claim
22 words
A submergible motor according to claim 1, wherein said insulated power supply conductor comprises a power supply conductor and a grounding conductor.
Claim 5
Dependent Claim
43 words
A submergible motor according to claim 1, including a stator, a frame surrounding said stator, a stator connector disposed in said frame, and a power supply connector removably coupled to said stator connector, said circuit element being accommodated in said power supply connector.
Claim 6
Dependent Claim
69 words
A submergible motor according to claim 1, wherein said submergible motor comprises a single-phase induction motor of the split-phase starting type having an auxiliary coil, said starter circuit means comprising an integrated circuit composed of a switching device connected in series with said auxiliary coil and having a gate, a trigger element connected to said gate of said switching device, and a control circuit for controlling said trigger element.
Claim 7
Dependent Claim
33 words
A submergible motor according to claim 1, wherein said molded material is an insulating material poured and solidified within a power supply connector comprising said metallic sleeve and receiving said power supply conductor.
References Cited (Backward Citations)
FR2309055A1
Cited
US4053196A
Cited
FR2384367A1
Cited
US4113341A
Cited
EP0024585A2
Cited
US4307925A
Cited
US4437027A
Cited
US4442366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |