Patent US3680735A successfully refreshed from Google Patents.
US3680735A
Expired / Lapsed
US
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Lug for liquid container
Assignee: Hydrotech Chemical Corp
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Filing: 1971-03-31
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Granted: 1972-08-01
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Expires: 1991-03-31
Abstract
Abstract An improved container-carrying lug in which corner ribs are provided concave to the lug interior and vertically extending tongues project into the rib concavity in a manner to engage and support a stacked corresponding lug.
Inventors
- 👤 Robert S Lucas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:23
CPC Classifications
B; B65; B65D; B65D21/00; B65D21/02; B65D21/0209; B65D21/0215
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
In a container-carrying plastic lug having a generally polygonal horizontal cross-section, vertically extending sidewalls below an outwardly extending flange means at the top of the lug, and at each lug corner a vertically disposed corner rib extending from the flange means to the lug bottom at the intersections of the sidewalls, said corner ribs being concave to the lug interior throughout their length, the improvement comprising a vertically extended tongue projecting into the rib concavity in a manner to engage and support a stacked corresponding lug, said flange means being recessed above said ribs to permit stacked lug engagement with said tongue.
Claim 2
Dependent Claim
102 words
In a container-carrying plastic lug having a generally polygonal horizontal cross-section, vertically extending sidewalls below an outwardly extending flange means at the top of the lug, and at each lug corner a vertically disposed corner rib extending from the flange means to the lug bottom at the intersections of the sidewalls, said corner ribs being concave to the lug interior throughout their length, the improvement comprising a vertically extended tongue projecting into the rib concavity in a manner to engage and support a stacked corresponding lug, said flange means being recessed above said ribs to permit stacked lug engagement with said tongue.
Claim 3
Dependent Claim
27 words
Lug according to claim 1 including also a plurality of vertical ribs at each lug corner, at least one of which is provided with said projecting tongue.
Claim 4
Dependent Claim
24 words
Lug according to claim 2 in which three vertical ribs are provided at each corner and each rib is provided with a projecting tongue.
Claim 5
Dependent Claim
15 words
Lug according to claim 1 in which said lug is formed of high density polyethylene.
Claim 6
Dependent Claim
43 words
Lug according to claim 1 in which each said rib is semi-cylindrical, said tongue is formed integrally with its rib and projects thereinto a distance less than the radius of the rib concavity and normal to the plane of the wall it subtends.
Claim 7
Dependent Claim
16 words
Lug according to claim 5 in which the tongue projection is uniform throughout its vertical extent.
Claim 8
Dependent Claim
35 words
Lug according to claim 6 in which said rib terminates upwardly in a shoulder level with the top of said tongue for simultaneous engagement of a stacked lug with said rib shoulder and said tongue.
Claim 9
Dependent Claim
20 words
Lug according to claim 7 in which three vertical ribs are provided at each corner, each having a projecting tongue.
Claim 10
Dependent Claim
15 words
Lug according to claim 8 in which said lug is formed of high density polyethylene.
References Cited (Backward Citations)
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Cited
US3027045A
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US3172562A
Cited
US3303965A
Cited
US3403814A
Cited
US3447715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |