US4053398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for water removal from oil in submersible motor environment
Assignee: Borg Warner Corp
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Filing: 1976-02-26
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Granted: 1977-10-11
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Expires: 1996-02-26
Abstract
Abstract A water-absorbing material, such as silica gel, activated alumina and the like, is dispersed in the oil in which a submersible motor is operated, so as to absorb water which leaks into the motor housing. The water-absorbing material is then heated to a temperature at which the water is released. The water will flow, because of its specific gravity to a collection zone for removal to a location removed from the motor.
Inventors
- 👤 Harry J. Venema
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:57
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/0077; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; H; H02; H02K; H02K15/00; H02K15/12; H02K15/125; H02K5/00; H02K5/04; H02K5/12; H02K5/132
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
A method for removing water which leaks into the housing of a submersible electric motor and into the lubricating oil in said housing in which said motor operates, said lubricating oil having a water-absorbing material dispersed therein which absorbs water in said oil, the steps comprising: heating said oil and said water-absorbing material at a location in said housing removed from said motor to a temperature sufficient to free absorbed water from said water-absorbing material to this produce free water which because of its density flows to a collection zone in said housing adjacent to the heating location; and thereafter removing the collected free water from said collection zone to a zone outside said housing.
Claim 2
Independent Claim
115 words
A method for removing water which leaks into the housing of a submersible electric motor and into the lubricating oil in said housing in which said motor operates, said lubricating oil having a water-absorbing material dispersed therein which absorbs water in said oil, the steps comprising: heating said oil and said water-absorbing material at a location in said housing removed from said motor to a temperature sufficient to free absorbed water from said water-absorbing material to this produce free water which because of its density flows to a collection zone in said housing adjacent to the heating location; and thereafter removing the collected free water from said collection zone to a zone outside said housing.
Claim 3
Dependent Claim
33 words
A method as in claim 1 in which said water-absorbing material is a finely divided particulate material of such particle size than when dispersed in said oil permits proper operation of said motor.
Claim 4
Dependent Claim
15 words
A method as recited in claim 2 in which said water-absorbing material is silica gel.
Claim 5
Dependent Claim
15 words
A method as recited in claim 2 in which said water-absorbing material is activated alumina.
Claim 6
Dependent Claim
32 words
A method as recited in claim 1 in which said water-absorbing material has a particle size whose diameter is from about 10% to about 30% of any mechanical clearance in said motor.
Claim 7
Dependent Claim
93 words
In a submersible electric motor assembly having a housing with a lubricating oil sump into which water leaks, said oil having a water-absorbing material dispersed therethrough, the improvement which comprises: heater means in said sump to heat the oil and its contents to a temperature sufficient to drive free water from said water-absorbing material; means comprising a zone in said housing for collecting said free water which flows thereto because of its density; and means for removing said collected free water from said collecting zones and to a zone removed from said housing.
Claim 8
Dependent Claim
93 words
In a submersible electric motor assembly having a housing with a lubricating oil sump into which water leaks, said oil having a water-absorbing material dispersed therethrough, the improvement which comprises: heater means in said sump to heat the oil and its contents to a temperature sufficient to drive free water from said water-absorbing material; means comprising a zone in said housing for collecting said free water which flows thereto because of its density; and means for removing said collected free water from said collecting zones and to a zone removed from said housing.
References Cited (Backward Citations)
US1316547A
Cited
US1344982A
Cited
US1235898A
Cited
US1570626A
Cited
US1866659A
Cited
US2067345A
Cited
US2233093A
Cited
US2295097A
Cited
US2376418A
Cited
US2451124A
Cited
US2770317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |