Protector for submersible electric motors
AssigneeEthyl Corporation
InventorRobert E. Waltman
Life of this patent
Estimating the term…
Abstract
A protector for liquid-filled, submersible electric motors is provided. The protector has a resiliently deformable, liquid-filled reservoir which is attached to the housing of the electric motor. The motor liquid and the reservoir liquid are communicated at the attachment. The protector compensates for volume changes of the motor liquid, due to heating or cooling thereof, by expansion or contraction of the deformable reservoir. By compensating for motor liquid volume changes, internal motor parts are protected and isolated from external fluids.
Claims15
An apparatus for protecting, from corrosive fluids, submersible electric motors which are filled with lubricating liquid which includes:
- a. a reservoir shield means being filled with a reservoir shield liquid and having an upper end and a lower end, said upper end being permanently sealed to prevent reservoir shield liquid leakage from said upper end and said lower end being temporarily sealed to prevent reservoir shield liquid leakage from said lower end prior to insertion of said shield means in said corrosive fluids, said temporary seal being a destructible plug which will destruct when said insertion occurs so that said reservoir liquid and said corrosive fluids will be communicative one with the other;
- b. a liquid-filled, resiliently deformable reservoir means within said reservoir shield means;
- and
- c. an attaching means for attaching said reservoir means to said electric motor housing and for achieving communication between said reservoir liquid and said lubricating liquid.
Dependencies are inferred from the claim text.