Patent EP0328075A2 successfully refreshed from Google Patents.
EP0328075A2
Expired / Lapsed
EP
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Submerged motor pump
Assignee: Ebara Corp
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Filing: 1989-02-08
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Granted: —
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Expires: 2009-02-08
Abstract
Abstract Disclosed is a submerged motor pump of the type in which a motor is installed inside an outer casing so as to define an annular passage therebetween and a pumped liquid is discharged to the outside through the annular passage while cooling the entire periphery of the motor. The outer casing is formed using a resilient material and is retained at its upper and lower ends by rigid members. Accordingly, the outer casing is deformable in the radial direction so as to absorb external force, for example, impact force, which may be applied thereto during transportation.
Inventors
- 👤 Makoto Kobayashi
- 👤 Kiyoshi Ouchi
- 👤 Shinji Nishimori
- 👤 Tsuyoshi Maeda
- 👤 Yoshio Miyake
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 08:26
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/70; F04D29/708; F04D13/00; F04D13/02; F04D13/06; F04D13/08; F04D13/086; F04D29/40; F04D29/406
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
84 words
A submerged motor pump of the type in which a motor is installed inside an outer casing so as to define an annular passage therebetween and a pumped liquid is discharged to the outside through the annular passage while cooling the entire periphery of the motor, said pump being characterized in that: said outer casing is formed of a resilient material such as a rubber material, and that said resilient outer casing is retained at its axial upper and lower ends by rigid members.
Claim 2
Dependent Claim
84 words
A submerged motor pump of the type in which a motor is installed inside an outer casing so as to define an annular passage therebetween and a pumped liquid is discharged to the outside through the annular passage while cooling the entire periphery of the motor, said pump being characterized in that: said outer casing is formed of a resilient material such as a rubber material, and that said resilient outer casing is retained at its axial upper and lower ends by rigid members.
Claim 3
Dependent Claim
100 words
A submerged motor pump of the type in which a motor is installed inside an outer casing so as to define an annular passage therebetween and a pumped liquid is discharged to the outside through the annular passage while cooling the entire periphery of the motor; said pump being characterized in that; said outer casing is formed integral with a pump casing using a resilient material such as a rubber material, and that said integral structure is retained at its axial upper and lower ends by rigid members, thereby allowing said outer casing to be deformable in the radial direction.
Claim 4
Dependent Claim
100 words
A submerged motor pump of the type in which a motor is installed inside an outer casing so as to define an annular passage therebetween and a pumped liquid is discharged to the outside through the annular passage while cooling the entire periphery of the motor; said pump being characterized in that; said outer casing is formed integral with a pump casing using a resilient material such as a rubber material, and that said integral structure is retained at its axial upper and lower ends by rigid members, thereby allowing said outer casing to be deformable in the radial direction.
Claim 5
Dependent Claim
21 words
A submerged motor pump according to Claim 2, wherein a strainer is formed integral with the underside of said pump casing.
Claim 6
Dependent Claim
66 words
A submerged motor pump according to Claim 1 or 2, wherein the upper end portion of said outer casing is provided with either an annular projection or an annular groove, while the lower end portion of a rigid member which retains the upper end portion of said outer basing is provided with the other of the two, that is, the annular projection or the annular groove.
Claim 7
Dependent Claim
93 words
A submerged motor pump according to Claim 2, wherein the upper side of said pump casing is covered with an intermediate casing formed of a rigid material, said intermediate casing having leg portions provided integral with the underside thereof, said leg portions extending through said pump casing, so that said pump casing is clamped between said intermediate casing and a pump plate which is attached to the underside of said pump casing by means of bolts each of which is brought into thread engagement with a threaded portion formed in said leg portion.
Claim 8
Dependent Claim
70 words
A submerged motor pump according to Claim 2 or 5, wherein the upper side of said pump casing is covered with an intermediate casing formed of a rigid material, said intermediate casing being fastened to the underside of said motor by means of bolts each head of which is received in a recess formed in said resilient outer casing which is in contact with the underside of said intermediate casing.
References Cited (Backward Citations)
No citation records indexed.
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