Submersible pump having frangible drive connection

Details Submersible pump having frangible drive connection Submersible pump having frangible drive connection

1985-01-02

1986-08-05

Freeh, William L.

Pumps

Including disengageable rotary or frangible drive connection

403 2, 403260, 415121B, 241185A, 241 32, F04B 900, F16D 900, F03B 1300

Patent

active

046040358

ABSTRACT:
A submersible motor pump assembly having an improved driving connection between the motor and pump. The motor shaft and pump shaft are disposed in end-to-end relation and a bolt extends through an axial passage in the pump shaft and the projecting end of the bolt is threaded in an axial opening in the end of the motor shaft. The outer or opposite end of the pump shaft is formed with a recess that communicates with the passage and the head of the bolt is fixed against rotation with respect to the pump shaft by a bolt retainer which is disposed with the recess. A shear pin interconnects the mating ends of the two shafts to provide a driving connection. The hand of the thread on the bolt is such that rotation of the motor shaft, after shearing of the shear pin, will cause the bolt to be unthreaded from the motor shaft to prevent locking up of the shafts.

REFERENCES:
patent: 1865438 (1932-07-01), Friedemann
patent: 2666394 (1954-01-01), Sadler et al.
patent: 2918876 (1959-12-01), Howe
patent: 2936774 (1960-05-01), Holley, Jr. et al.
patent: 3224376 (1965-12-01), Schade
patent: 3961758 (1976-06-01), Morgan
patent: 4108386 (1978-08-01), Conery et al.
patent: 4378093 (1983-03-01), Keener
patent: 4402648 (1983-09-01), Kretschmer
patent: 4527947 (1985-07-01), Elliot

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