Pumps – Motor driven – Electric or magnetic motor
Patent
1979-02-02
1980-08-19
Roberts, Edward L.
Pumps
Motor driven
Electric or magnetic motor
417424, F04B 3504
Patent
active
042181950
ABSTRACT:
A submersible pump with an on/off switch electrically connecting a rechargeable battery to the motor. An upper sealable compartment contains the battery, recharging connections, and switch with inward projections to position the battery, a recharging receptacle for the battery on the top of the upper compartment, a resilient cover sealing the switch while permitting actuation of the switch from outside of the upper compartment, and a cap sealing the recharging receptacle. A lower compartment houses the motor, pumping chamber, and impeller. A bullet-shaped shell is seated in the lower compartment with a sealing ring between the shell and lower compartment. The motor is disposed in the shell with the motor drive shaft projecting through an opening in the tip of the shell and another seal surrounds the drive shaft between the motor and tip of the shell. The pumping chamber is formed by the annular space between the outside of the shell and the inside of the lower compartment with the impeller mounted on the drive shaft in the bottom of the pumping chamber. The upper compartment and lower compartment are joined together to form a sealed submersible pump.
REFERENCES:
patent: 3748066 (1973-07-01), Sully et al.
patent: 3910725 (1975-10-01), Rule
patent: 4013383 (1977-03-01), Rule
patent: 4021150 (1977-05-01), Mabuchi
International Components Corporation
Roberts Edward L.
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