Submersible electric motor

Claim 2

In an electric motor adapted to be suspended from the lower end of a liquid carrying pipe with an electric power cable for the motor extending within the pipe, the improvement of an end bell member for the motor comprising a generally transversely extending wall portion, means on the upper end of said wall portion adapted to be connected to an adaptor which is secured to the pipe, said wall portion further being adapted to be secured to the stator of said motor, bearing support means formed on the underside of said wall portion for supporting a bearing of the motor, electrical connector means fastened to the upper side of said wall portion and forming a detachable electrical connection with said cable, electrical conductor means connected to said connector means and extending through said wall portion and adapted to be connected to windings of said motor stator, and said wall portion having a passage therethrough permitting pumped liquid to flow upwardly from a passage in the motor to the interior of said pipe.

Claim 3

Apparatus as in claim 1, wherein said end bell member further includes second electrical connector means at the underside of said wall portion for forming a detachable electrical connection with the motor windings, said second connector means having generally radially extending electrical conductors mounted in said end bell member and forming an electrical connection with said first mentioned electrical connector means.

Claim 4

In an electric motor adapted to be suspended from the lower end of a liquid carrying pipe with an electric power cable for the motor extending within the pipe, the improvement comprising a top member for said motor, said member including a generally cylindrical outer portion having a transversely extending wall portion, the upper end of said outer portion being adapted to be connected to an adaptor which is secured to the pipe, the lower end of said outer portion being adapted to be secured to the stator of said motor, electrical connector support means formed on the upper side of said wall portion for supporting a first electrical connector part, said connector support means being located on said wall portion, an opening formed in said wall portion adjacent the stator of the motor and radially spaced from said support means, said opening being adapted to receive a second electrical connector part, a radially extending passage formed in said wall portion between said connector support means and said opening, said passage being open at its outer end, a plurality of electrical conductors mounted in said passage for electrically connecting said first and second electrical connector parts, said conductors being assembled with at least one of said connector parts through said opening, and plug means for sealing said outer end of said passage after assembly of said conductors with said one connector part.

Claim 5

In an electric motor adapted to be suspended from the lower end of a liquid carrying pipe with an electric power cable for the motor extending within the pipe, the improvement comprising a top member for said motor, said member including a generally cylindrical outer portion having a transversely extending wall portion, the upper end of said outer portion being adapted to be connected to an adaptor which is secured to the pipe, the lower end of said outer portion being adapted to be secured to the stator of said motor, electrical connector support means formed on the upper side of said wall portion for supporting a first electrical connector part, said connector support means being located on said wall portion, an opening formed in said wall portion adjacent the stator of the motor and radially spaced from said support means, said opening being adapted to receive a second electrical connector part, a radially extending passage formed in said wall portion between said connector support means and said opening, said passage being open at its outer end, a plurality of electrical conductors mounted in said passage for electrically connecting said first and second electrical connector parts, said conductors being assembled with at least one of said connector parts through said opening, and plug means for sealing said outer end of said passage after assembly of said conductors with said one connector part.

Claim 6

In a submersible electric motor adapted to be suspended from a pipe having an electric cable therein, said motor including a stator containing windings forming a rotor enclosure, said motor also including bearings, and a rotor rotatably mounted in said bearings, said motor having a liquid passage therein, the improvement comprising an end bell adapted to be secured to one end of said stator and to the pipe to suspend said motor, said end bell having a transverse wall closing the end of the rotor enclosure and an integral cylindrical portion depending from said transverse wall into the rotor enclosure, said cylindrical portion carrying one of the bearings for the rotor, said end bell having first and second detachable electrical connector means for automatically connecting and disconnecting the electric cable to and from the windings, said first connector means being connectable to said cable and said second connector means being connectable to said stator windings, and said end bell having liquid passage means for connecting the liquid passage in the motor to said pipe.

Claim 7

In a submersible electric motor adapted to be suspended from a pipe having an electric cable therein, said motor including a stator containing windings forming a rotor enclosure, said motor also including bearings, and a rotor rotatably mounted in said bearings, said motor having a liquid passage therein, the improvement comprising an end bell adapted to be secured to one end of said stator and to the pipe to suspend said motor, said end bell having a transverse wall closing the end of the rotor enclosure and an integral cylindrical portion depending from said transverse wall into the rotor enclosure, said cylindrical portion carrying one of the bearings for the rotor, said end bell having first and second detachable electrical connector means for automatically connecting and disconnecting the electric cable to and from the windings, said first connector means being connectable to said cable and said second connector means being connectable to said stator windings, and said end bell having liquid passage means for connecting the liquid passage in the motor to said pipe.

Claim 8

In the end bell of claim 4, wherein said first electrical connector means comprises a connector part extending from the end bell toward the pipe, said connector part being adapted to connect with a cooperating connector part in the pipe, and said second connector means comprises a contact arm assembly located in the end bell member, one end of said contact arm assembly engaging said connector part of said end bell, and the other end of said contact arm assembly being adapted to engage a connector part on the stator.

Claim 9

In the end bell of claim 5, wherein said connector part of said end bell comprises a cylindrical body having a transverse wall and a plurality of prongs extending axially above and below said transverse wall, one end of said prongs engaging said contact arm assembly, and the other end of said prongs being adapted to engage the connector part in the pipe.

Claim 10

In the end bell of claim 6, wherein said contact arm assembly comprises a housing having partitioning providing a plurality of chambers, a plurality of resilient strips, one in each chamber, one end of each of said strips contacting said prongs, and the other ends of said strips being adapted to contact the connector part on the stator.

Claim 11

In the end bell of claim 7, wherein said end bell and said housing have cooperating rib and groove structure to align said housing in said end bell.

Claim 12

In the end bell oF claim 7, wherein said housing and body have cooperating projection and slot structure to align said body and housing.

Claim 13

In the end bell of claim 5, wherein said connector part of said end bell is located in an axial opening in said end bell, and said contact arm assembly is located in a transverse opening in said end bell, the inner end of said transverse opening intersecting said axial opening, a second axial opening provided in said end bell and adapted to receive the connector part on said stator, the outer end of said transverse opening intersecting said second axial opening.

Claim 14

In the end bell of claim 4, wherein said cylindrical portion has openings above and below said bearing to provide for liquid flow through said bearing.

Claim 15

In the end bell of claim 11, wherein a liquid passage is provided in said end bell member for liquid flow from the rotor cavity to the exterior of said end bell.

Claim 16

In a submersible electric motor adapted to be suspended from an adaptor on a pipe having an electric cable therein, the motor including a cylindrical stator containing stator windings and forming a rotor enclosure, said motor also including a rotor rotatably mounted in the rotor enclosure, the adaptor and motor having liquid passages therein, the improvement comprising an end bell adapted to be secured to the stator and to the adaptor to suspend the motor, said end bell having a transverse wall closing the end of the rotor enclosure, said end bell having liquid passage means for connecting the liquid passages in the motor and adaptor, and said end bell having electrical connector means for automatically connecting and disconnecting the electric cable to the stator windings by assembling and disassembling said end bell to the adaptor, said electrical connector means including a connector part located in an axial bore in the end bell and adapted to be connected to a corresponding connecting part on the adaptor, to contact arm assembly located in a radial bore in the end bell, said radial bore intersecting said axial bore at one end and intersecting a second axial bore in said end bell at its other end, said contact arm assembly contacting said connector part in said end bell at one end, and at the other end said contact arm assembly being adapted to contact a connector part on the stator extending into said second axial bore.

Claim 17

In a submersible electric motor adapted to be suspended from an adaptor on a pipe having an electric cable therein, the motor including a cylindrical stator containing stator windings and forming a rotor enclosure, said motor also including a rotor rotatably mounted in the rotor enclosure, the adaptor and motor having liquid passages therein, the improvement comprising an end bell adapted to be secured to the stator and to the adaptor to suspend the motor, said end bell having a transverse wall closing the end of the rotor enclosure, said end bell having liquid passage means for connecting the liquid passages in the motor and adaptor, and said end bell having electrical connector means for automatically connecting and disconnecting the electric cable to the stator windings by assembling and disassembling said end bell to the adaptor, said electrical connector means including a connector part located in an axial bore in the end bell and adapted to be connected to a corresponding connecting part on the adaptor, to contact arm assembly located in a radial bore in the end bell, said radial bore intersecting said axial bore at one end and intersecting a second axial bore in said end bell at its other end, said contact arm assembly contacting said connector part in said end bell at one end, and at the other end said contact arm assembly being adapted to contact a connector part on the stator extending into said second axial bore.

Claim 18

In an electric motor adapted to be suspended from the lower end of a liquid carrying pipe with an electric power cable for the motor extending within the pipe, the improvement comprising a top member for said motor, said member including a generally cylindrical outer portion having a transversely extending wall portion, the upper end of said outer portion being adapted to be connected to an adaptor which is secured to the pipe, the lower end of said outer portion being adapted to be secured to the stator of said motor, said member having an opening therethrough and the outer end of said opening appearing at the outside of said member, one part of an electrical connector means extending into said opening, electrical conductor means extending through said opening and assembled with said one part through said opening, and plug means for sealing the outer end of said opening after assembly of said conductors with said one part.

Claim 19

In an electric motor adapted to be suspended from the lower end of a liquid carrying pipe with an electric power cable for the motor extending within the pipe, the improvement comprising a top member for said motor, said member including a generally cylindrical outer portion having a transversely extending wall portion, the upper end of said outer portion being adapted to be connected to an adaptor which is secured to the pipe, the lower end of said outer portion being adapted to be secured to the stator of said motor, said member having an opening therethrough and the outer end of said opening appearing at the outside of said member, one part of an electrical connector means extending into said opening, electrical conductor means extending through said opening and assembled with said one part through said opening, and plug means for sealing the outer end of said opening after assembly of said conductors with said one part.

Claim 20

In an electric motor adapted to be suspended from the lower end of a liquid carrying pipe with an electric power cable for energizing the stator windings of the motor extending within the pipe, the improvement of an end bell member for the motor comprising a generally transversely extending wall portion, one end of said wall portion being connected to an adaptor which is secured to the pipe, said wall portion further being secured to the stator of said motor, bearing support means formed on the other side of said wall portion for supporting a rotor bearing of the motor, said wall portion having a passage therethrough permitting pumped liquid to flow upwardly from a passage inthe motor to the interior of said piPe, first electrical connector means fastened to said one side of said wall portion and forming a detachable electrical connection with said cable, a passage formed in said wall portion and extending generally radially outwardly from said first electrical connector, second electrical connector means mounted in said passage adjacent the outer end thereof and connected to said stator windings, and a plurality of electrical conductors extending generally radially in said passage between said first and second connectors.

Claim 21

In an electric motor adapted to be suspended from the lower end of a liquid carrying pipe with an electric power cable for energizing the stator windings of the motor extending within the pipe, the improvement of an end bell member for the motor comprising a generally transversely extending wall portion, one end of said wall portion being connected to an adaptor which is secured to the pipe, said wall portion further being secured to the stator of said motor, bearing support means formed on the other side of said wall portion for supporting a rotor bearing of the motor, said wall portion having a passage therethrough permitting pumped liquid to flow upwardly from a passage inthe motor to the interior of said piPe, first electrical connector means fastened to said one side of said wall portion and forming a detachable electrical connection with said cable, a passage formed in said wall portion and extending generally radially outwardly from said first electrical connector, second electrical connector means mounted in said passage adjacent the outer end thereof and connected to said stator windings, and a plurality of electrical conductors extending generally radially in said passage between said first and second connectors.

Claim 22

Apparatus according to claim 15, wherein said first electrical connector means comprises a connector part extending from the end bell member toward the pipe, said connector part being adapted to connect with a cooperating connector part in the pipe, and wherein said conductors comprise a contact arm assembly located in said passage, one end of said contact arm assembly engaging said first electrical connector means, and the other end of said contact arm assembly engaging said second electrical connector means.