Viewport assembly

Details Viewport assembly Viewport assembly

1992-01-24

1993-07-27

Shoap, Allan N.

Receptacles

Closures

Externally adjustable plug or gasket

220254, 220327, 220377, 138 89, B65D 5300

Patent

active

052304370

ABSTRACT:
A viewport assembly having a tubular member, such as a ullage tube, with an internal cylindrical surface, a frame ring with an outer and an inner circumferential surface, the outer surface being defined in part by an outwardly radially extending flange portion and the frame ring having a plurality of spaced apart bolt holes therethrough, a gland ring having an integral forwardly extending tubular portion, the tubular portion being telescopically receivable on the frame ring outer circumferential surface rearwardly of the flange portion and providing an annular area externally of the frame ring between the frame ring flange and the gland ring tubular portion forward end, a transparent window disc sealably received within the frame ring, and a bolt for each of the bolt holes in the frame ring threadably engaging matching threaded bolt holes in the gland ring so that as the bolts are tightened the gland ring is drawn onto the frame ring, compressing the packing ring to expand it outwardly into sealing engagement with the tubular member internal cylindrical surface.

REFERENCES:
patent: 922508 (1909-05-01), Puffer
patent: 2342186 (1944-02-01), Fischer
patent: 2396469 (1946-03-01), Meigs
patent: 2461989 (1949-02-01), LeRoy
patent: 2917924 (1959-12-01), Messick
patent: 3379332 (1968-04-01), Anderson
patent: 3613936 (1971-10-01), Kaiser et al.
patent: 3625390 (1968-02-01), Meginnis
patent: 3951301 (1976-04-01), Meginnis
patent: 4312708 (1982-01-01), Leslie
patent: 4585033 (1986-04-01), Westman
patent: 4809862 (1989-03-01), Carty
patent: 4968197 (1990-11-01), Chen
patent: 5035265 (1991-07-01), Chen
patent: 5038830 (1991-08-01), Arnaud
patent: 5044403 (1991-09-01), Chen

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