Apparatus for making filter frames

Details Apparatus for making filter frames Apparatus for making filter frames

1986-07-21

1988-03-15

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

Control means energized in response to activator stimulated...

Responsive to work material, the product or means engaging...

493 22, 493354, 493355, 493360, 493399, 493941, 83357, 83406, B31B 100

Patent

active

047310472

ABSTRACT:
An apparatus for the production of frames for filters from a continuing reel of framestock, each frame having a given length and width determined by a preset cutting and corner notching function and each frame having a prefolded cross section or a pinched cross section, said frames made to accommodate filter material of the type normally used to filter air.

REFERENCES:
patent: 2102170 (1937-12-01), Stern
patent: 2161831 (1939-06-01), Manning
patent: 2393419 (1946-01-01), Schaat
patent: 2965197 (1960-12-01), Dow et al.
patent: 3654830 (1972-04-01), Werner, Jr.
patent: 4061326 (1977-12-01), Proudman
patent: 4210067 (1980-07-01), Evans, Jr.
patent: 4471641 (1984-09-01), Mitchell

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