Title: Non-spilling liquid container

Abstract: A hollow container having an open top is provided with a cap releasably secured thereto. The cap, in turn, includes an open top having an inwardly and downwardly extending lip surrounding the opening. A lid is positioned in the opening and includes a peripheral lip that extends upwardly and outwardly to engage the lip of the cap to form a liquid seal therebetween. A spring member is seated within an annular groove within the cap and contacts the lid to urge the lid upwardly toward the cap. A slight air gap is maintained between the lips; the force of liquid in the container pushing against the lid when the container is tilted causes the lips to engage and maintain a liquid seal therebetween.

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Inventors: Hamilton, Sr., Calvin G.

Application Number: 958002
Filing Date: 1978-11-06
Publication_date: 1980-01-22
Assignee:
Primary Class(es): 220/254.9 220/254.5, 220/254.8, 220/259.5, 220/661, 220/714, 220/719, 222/517, 222/518, 222/571
Other Classes:
US Patent Ref:

1457070	May, 1923	Mayberry	220/254.
2126390	Aug, 1938	Jackson	215/31.
2414697	Jan, 1947	Pettersson	220/90.
2478544	Aug, 1949	Olson	215/31.
2798718	Jul, 1957	Gross	267/161.
3015404	Jan, 1962	Wayckens	215/31.
3015411	Jan, 1962	Smith	220/90.
3208629	Sep, 1965	Beeson	220/90.
3338467	Aug, 1967	Albert	220/90.
3341062	Sep, 1967	Phillips	220/90.
3437232	Apr, 1969	Goodwi, Jr.	220/93.
3504849	Apr, 1970	Quinn	267/161.
3727808	Apr, 1973	Fitzgerald	222/482.
3749274	Jul, 1973	Mele et al.	220/234.
3797696	Mar, 1974	Dibrell et al.	220/90.
3952910	Apr, 1976	Wheeler	220/90.
3964631	Jun, 1976	Albert	222/518.

Other Refs:
Primary Examiner: Shoap, Allan N.
Assistant Examiner:
Attorney: Cahill, Sutton & Thomas