Case structure for rotary machines

Details Case structure for rotary machines Case structure for rotary machines

1979-02-05

1981-08-04

Roberts, Edward L.

Pumps

Motor driven

Electric or magnetic motor

310 87, 415DIG3, F04B 3912, F04B 3914

Patent

active

042819733

ABSTRACT:
A case structure for rotary machines, particularly electric motors and multi-stage pumps having a prevailingly axial length, comprising a tubular member having roll-formed threads and at least one roll-formed groove in the peripheral wall for threadably engaging a fixed portion of the machine, a support for a rotary portion of the machine and two threaded caps at the ends of the tubular member. The threads may extend continuously along the wall of the tubular member. The machine portions are therefore easily assemblable and disassemblable by threading through one end of the tubular member, and the groove clamps the machine portions in the tubular member. Rolling of the threads provides stiffening and calibration of the tubular member, thus making it particularly suitable for machines having a great axial extension and small transverse dimension.

REFERENCES:
patent: 2556435 (1951-06-01), Moehrl et al.
patent: 2689529 (1954-09-01), Wightman
patent: 3437046 (1969-04-01), Tremain et al.
patent: 3521970 (1970-07-01), Deters
patent: 4015633 (1977-04-01), Mandell

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