Submersible gearmotor
First Claim
1. A submersible gearmotor, said submersible gearmotor including:
- a motor contained in a motor housing and including a motor shaft extending into a geartrain housing;
a geartrain housing integrally attached to said motor housing, said geartrain housing containing at least one gear and including a geartrain output shaft extending to the exterior of said geartrain housing for operative connection to a device to be driven by said gearmotor, said geartrain housing including at least a first radially inwardly extending partition forming a first output shaft receiving chamber containing a geartrain, and a second radially inwardly extending partition forming a second output shaft receiving chamber adjacent the portion of said geartrain housing through which the output shaft extends; and
inner sealing means for sealing between said first inwardly extending partition and said output shaft for preventing moisture from entering said first output shaft receiving chamber and outer sealing means for sealing between said second radially inwardly extending partition and said output shaft for preventing moisture from entering said second output shaft receiving chamber, whereby said gearmotor is sealed against entry of moisture.
3 Assignments
0 Petitions
Accused Products
Abstract
A submersible gearmotor including a liquid resistant housing with radially inwardly extending partitions which form at least two shaft receiving chambers. The separate chambers act as protective regions between the internal components of the gearmotor and an outside liquid medium when submersed. The gearmotor also includes a tandem seal arrangement including an inboard seal located inside the housing and an outboard seal located outside the housing. The seals prevent the outside liquid medium from entering the gearmotor where the housing intersects with the rotating output shaft. The gearmotor further includes a leak detection system consisting of moisture sensing probes mounted inside one or both of the receiving chambers.
30 Citations
32 Claims
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1. A submersible gearmotor, said submersible gearmotor including:
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a motor contained in a motor housing and including a motor shaft extending into a geartrain housing; a geartrain housing integrally attached to said motor housing, said geartrain housing containing at least one gear and including a geartrain output shaft extending to the exterior of said geartrain housing for operative connection to a device to be driven by said gearmotor, said geartrain housing including at least a first radially inwardly extending partition forming a first output shaft receiving chamber containing a geartrain, and a second radially inwardly extending partition forming a second output shaft receiving chamber adjacent the portion of said geartrain housing through which the output shaft extends; and inner sealing means for sealing between said first inwardly extending partition and said output shaft for preventing moisture from entering said first output shaft receiving chamber and outer sealing means for sealing between said second radially inwardly extending partition and said output shaft for preventing moisture from entering said second output shaft receiving chamber, whereby said gearmotor is sealed against entry of moisture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A submersible gearmotor, said submersible gearmotor including:
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a motor contained in a motor housing and including a motor shaft extending into a geartrain housing; a geartrain housing integrally attached to said motor housing, said geartrain housing containing at least one gear and including a geartrain output shaft extending to the exterior of said geartrain housing for operative connection to a device to be driven by said gearmotor, said geartrain housing including at least a first radially inwardly extending partition forming a first output shaft receiving chamber and a second radially inwardly extending partition forming a second output shaft receiving chamber adjacent the portion of the geartrain housing through which the output shaft extends; inner sealing means for sealing between said first inwardly extending partition and said output shaft for preventing moisture from entering said first output shaft receiving chamber and outer sealing means for sealing between said second inwardly extending partition and said output shaft for preventing moisture from entering said second output shaft receiving chamber, whereby said gearmotor is sealed against entry of moisture; and means for sensing moisture in said second receiving chamber so as to detect failure of said inner sealing means or said outer sealing means before said gearmotor is damaged. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A submersible gearmotor, said submersible gearmotor including:
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a motor in a motor housing and including a motor shaft extending into a geartrain housing; a geartrain housing integrally attached to said motor housing, said geartrain housing containing at least one gear and including a geartrain output shaft extending to the exterior of said geartrain housing for operative connection to a device to be driven by said gearmotor, said geartrain housing including at least a first radially inwardly extending partition forming a first output shaft receiving chamber containing a geartrain, and a second radially inwardly extending partition forming a second output shaft receiving chamber adjacent the portion of said geartrain housing through which the output shaft extends; an inner mechanical face seal for sealing between said first inwardly extending partition and said output shaft for preventing moisture from entering said first output shaft receiving chamber and an outer mechanical face seal for sealing between said second radially inwardly extending partition and said output shaft for preventing moisture from entering said second output shaft receiving chamber, whereby said gearmotor is sealed against entry of moisture; and moisture sensing probes for detecting the presence of moisture in said second receiving chamber. - View Dependent Claims (20, 21, 22)
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23. A submersible apparatus, said apparatus including:
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a gearmotor contained in a housing and including a motor, a motor shaft, a geartrain and a geartrain output shaft, said output shaft extending to the exterior of said housing and operatively connected to a fluid propulsion device, said housing including at least a first radially inwardly extending partition forming a first output shaft receiving chamber, and a second radially inwardly extending partition forming a second output shaft receiving chamber adjacent the portion of said housing through which the output shaft extends; inner sealing means for sealing between said first inwardly extending partition and said output shaft for preventing moisture from entering said first output shaft receiving chamber and outer sealing means for sealing between said second radially inwardly extending partition and said output shaft for preventing moisture from entering said second output shaft receiving chamber, whereby said gearmotor is sealed against entry of moisture; and means for sensing moisture in said second receiving chamber so as to detect failure of said sealing means before said submersible apparatus is damaged. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification