Assembly for sealing lead-in areas in a developer station

Details Assembly for sealing lead-in areas in a developer station Assembly for sealing lead-in areas in a developer station

1979-04-06

1980-07-22

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 80, 277DIG7, 118654, 118658, 355 3DD, F16J 1540, F16J 1554

Patent

active

042136172

ABSTRACT:
A sealing assembly for a developed station in a copying machine for sealing apertures in a casing wall of the developer station to prevent developer powder, including magnetizable particles, from escaping into the housing of the copying machine establishes an effective permanent non-friction and wear-free seal at casing wall apertures such as casing openings through which rotating shafts or other movable members extend. The seal consists of magnetic members in the vicinity of an aperture for establishing a magnetic field barrier across the aperture. The magnetic members consist of permanent magnets or of solenoids in the configuration of strips, discs, triangles, rings or wedges. Optionally a cover member straddling the aperture, may cooperate with the magnetic barrier members.

REFERENCES:
patent: 2863538 (1958-12-01), Jaeschke
patent: 3031802 (1962-05-01), Leliaert
patent: 3543720 (1970-12-01), Drexler et al.
patent: 3643629 (1972-02-01), Kangas et al.
patent: 3791730 (1974-02-01), Sullivan
patent: 3834775 (1974-09-01), Tuffias et al.
patent: 3848879 (1974-11-01), Hudgins
patent: 3915121 (1975-10-01), Wilcox
patent: 4057258 (1977-11-01), Ernst et al.
patent: 4101211 (1978-07-01), Kayson
patent: 4132192 (1979-01-01), Weyers et al.
Machine Design, issue of Mar. 28, 1968, pp. 145-150.

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