Sealing means for a cylindrical pump case or the like

Details Sealing means for a cylindrical pump case or the like Sealing means for a cylindrical pump case or the like

1985-05-10

1987-03-10

Hershkovitz, Abraham

Rotary kinetic fluid motors or pumps

With lubricating, sealing, packing or bearing means having...

415201, 415219C, 277 3, 277182, F04D 2908

Patent

active

046487891

ABSTRACT:
An improved seal for a generally cylindrical pump case provides an internal seal between the case and the head for preventing the flow of fluid between them. The improved seal includes a flexible annular responsive means attached or unattached to the head and carrying a resilient annular seal member. Increasing pressure within the pump case forces the flexible annular pressure responsive means into engagement against the interior surface of the case preventing extrusion of the resilient annular seal member when the case is pressurized, thus providing a more efficient fluid tight seal.

REFERENCES:
patent: 2021346 (1935-11-01), Allen
patent: 2822196 (1958-02-01), Canfield
patent: 3179422 (1965-04-01), Phillips
patent: 3329171 (1967-07-01), Sibbald
patent: 3443814 (1969-05-01), Dahlheimer
patent: 3604820 (1971-09-01), Scheller
patent: 4296935 (1981-10-01), Inouye

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