Receptacles – Closures – Removable closure retained by ductile in situ deformation
Patent
1977-09-29
1979-10-09
Hart, Ro E.
Receptacles
Closures
Removable closure retained by ductile in situ deformation
220353, 222182, D 9285, B65D 4116
Patent
active
041703162
ABSTRACT:
The invention relates to a one-piece molded plastic over-cap, collar, container, or housing, of the type that preferably snaps down over or within an aerosol type spout or screws onto the spout, the over-cap differing from prior devices in that the resilient wedge projections extending about radially inwardly have upper-edge faces separate from and space away from and extending beneath the inner surface of the top horizontal inner wall of the cap device such that the molding process thereof and the resulting product from the molding process does not result in a top surface characterized by sink marks characteristic of prior art caps, the sink marks resulting from contraction of the cooling plastic of the respective wedge projections, the contracting plastic pulling downwardly on the top of the cap at the particular locations at which the radially inwardly wedge projections are in prior art caps positioned and integral with the upper wall, the present over-cap devices being free of such contraction-sink indentations in the top surface of the cap top, thereby being beneficially receptive of advertising, labelling or the like, in contrast with prior art caps in which such labelling on the top surface thereof was unsatisfactory if not impossible to effect because of the several sink-recesses characterizing an uneven surface not receptive of printing or the like, and having lower portions of readially-inwardly facing projection edges extending and being tapered radially to an extent further than an upper portion thereof, thus forming a catch to latch onto a vessel's mouth structure.
REFERENCES:
patent: D142622 (1945-10-01), Derham
patent: D147261 (1945-10-01), Derham
patent: D189557 (1961-01-01), Soffer
patent: 2713872 (1955-07-01), Juengling
patent: 2973881 (1961-03-01), Ostrowitz
patent: 3085705 (1963-04-01), Varney
patent: 3167217 (1965-01-01), Corsette
patent: 3203577 (1965-08-01), Parker
patent: 3450299 (1969-06-01), LaBarbera
patent: 3684124 (1972-08-01), Song
patent: 3844448 (1974-10-01), Sette
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