Expandable filter assembly

Details Expandable filter assembly Expandable filter assembly

1991-11-13

1992-07-28

Hart, Charles

Gas separation

With means securing or retaining separating media

Fastening means pierces or penetrates media

55493, 55496, 55511, B01D 4600

Patent

active

051337894

ABSTRACT:
A filter assembly includes a filter media unit and a frame unit. The frame unit is expandable and contractible whereby various filter media unit sizes can be accommodated. The frame unit includes a plurality of crossed legs that are pivotally connected together, and snap fastener assemblies are used to releasably attach the frame unit to the filter media unit body. Locking pivot pins can be used to attach adjacent legs together.

REFERENCES:
patent: 2754928 (1956-07-01), Hambrecht et al.
patent: 3019854 (1962-02-01), O'Bryant
patent: 3950157 (1976-04-01), Mathely
patent: 4042503 (1977-08-01), Justus
patent: 4277901 (1980-10-01), Lange
patent: 4493718 (1985-01-01), Schweizer
patent: 4504390 (1985-03-01), Steffen
patent: 4762053 (1988-08-01), Wolfert

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