US3741423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press-on twist lift-off container sealing means
Assignee: Anchor Hocking LLC
•
Filing: 1971-10-27
•
Granted: 1973-06-26
•
Expires: 1991-10-27
Abstract
Abstract A closure cap is described which is pressed without rotation onto a cooperating container to initially seal it. The cap is removed from the container by a twisting and lifting motion and may thereafter be snapped back onto the container to reseal it. The rim of the container has an interrupted circular slot with radially outwardly directed camming ramps between the slot sections. The closure cap has a plastisol lined skirt including anchoring portions which enter into the slot sections after the press-on sealing operation to hold the closure cap in place. The portions of the gasket entering the slots may be preformed on the gasket or they may be formed during sealing as bulges in the gasket material resulting from a deformation of the gasket during sealing. The outwardly directed ramps facilitate cap removal by wiping off the gasket anchoring positions when the cap is twisted on the jar permitting the cap to be lifted off. Where the cap is used for a vacuum seal, an additional vacuum breaking venting groove may be included in the glass finish. The venting groove is filled with the gasket compound during sealing to provide a hermetic seal and when the cap is twisted during removal, the twisting motion carries the gasket material out of the groove permitting air to pass under the cap gasket and into the sealed package.
Inventors
- 👤 D Acton
- 👤 G Foss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:14
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/0435; B65D41/0457; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00027
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
81 words
A press-on closure cap for sealing a container comprising the combination of a cap shell having a cover and a depending skirt, a gasket on the inside of said depending skirt, and said gasket having a plurality of circumferentially spaced and directed anchoring portions with substantial horizontal sections spaced from the top and bottom of the gasket and projecting radially inwardly of the cap for engaging horizontally positioned slots on the rim of said container and forming removable container engaging projections.
Claim 2
Dependent Claim
81 words
A press-on closure cap for sealing a container comprising the combination of a cap shell having a cover and a depending skirt, a gasket on the inside of said depending skirt, and said gasket having a plurality of circumferentially spaced and directed anchoring portions with substantial horizontal sections spaced from the top and bottom of the gasket and projecting radially inwardly of the cap for engaging horizontally positioned slots on the rim of said container and forming removable container engaging projections.
Claim 3
Dependent Claim
34 words
The closure cap as claimed in claim 1 in which said gasket extends from an annular zone at the edge of said cover downwardly over the skirt to a line adjacent the skirt edge.
Claim 4
Dependent Claim
14 words
The closure cap as claimed in claim 1 in which said gasket comprises plastisol.
Claim 5
Dependent Claim
84 words
A press-on twist lift-off closure cap for sealing a container comprising the combination of a cap shell having a cover and a depending skirt, a plastisol gasket covering a major portion of the inside of said skirt, a portion of saId gasket spaced from both the gasket top and bottom having a plurality of radially inwardly projecting anchoring portions with substantial horizontal circumferentially directed sections projecting inwardly into horizontally positioned slots adjacent to the rim of said container and forming removable container engaging projections.
Claim 6
Dependent Claim
84 words
A press-on twist lift-off closure cap for sealing a container comprising the combination of a cap shell having a cover and a depending skirt, a plastisol gasket covering a major portion of the inside of said skirt, a portion of saId gasket spaced from both the gasket top and bottom having a plurality of radially inwardly projecting anchoring portions with substantial horizontal circumferentially directed sections projecting inwardly into horizontally positioned slots adjacent to the rim of said container and forming removable container engaging projections.
Claim 7
Dependent Claim
19 words
The closure cap as claimed in claim 4 in which said projecting portions include an inclined cap lifting section.
Claim 8
Dependent Claim
35 words
The closure cap as claimed in claim 4 which further comprises an annular top sealing plastisol gasket extending from the top of said gasket on the cap skirt inwardly on the underside of said cover.
Claim 9
Dependent Claim
18 words
The cap as claimed in claim 4 which further includes knobs on said gasket for preventing cap nesting.
Claim 10
Dependent Claim
82 words
A sealed package comprising the combination of a closure cap having a cover and a depending skirt, a gasket on the interior surface of the cap skirt, a container, a plurality of horizontal slots on said container forming a circular interruptal groove adjacent the container rim, said gasket having horizontal anchoring portions projecting into said slots, radially outwardly directed ramps at the ends of said slots for engaging and wiping off said gasket projections when said cap is turned on said container.
Claim 11
Dependent Claim
82 words
A sealed package comprising the combination of a closure cap having a cover and a depending skirt, a gasket on the interior surface of the cap skirt, a container, a plurality of horizontal slots on said container forming a circular interruptal groove adjacent the container rim, said gasket having horizontal anchoring portions projecting into said slots, radially outwardly directed ramps at the ends of said slots for engaging and wiping off said gasket projections when said cap is turned on said container.
Claim 12
Dependent Claim
15 words
The package as claimed in claim 8 in which said gasket comprises a plastisol gasket.
Claim 13
Dependent Claim
30 words
The package as claimed in claim 8 which further comprises an annular top sealing gasket extending from the top of said gasket on the cap skirt over the container rim.
Claim 14
Dependent Claim
30 words
The package as claimed in claim 8 in which said container rim is generally circular and includes a non-circular surface below said slots engaging the gasket on the cap skirt.
Claim 15
Dependent Claim
19 words
The package as claimed in claim 11 in which said non-circular surface comprises a plurality of adjacent flat sections.
Claim 16
Dependent Claim
26 words
The package as claimed in claim 11 in which said non-circular surface includes downwardly and outwardly flared portions for lifting said cap when it is turned.
Claim 17
Dependent Claim
19 words
The package as claimed in claim 8 which further comprises knobs on said cap gasket for preventing cap nesting.
Claim 18
Dependent Claim
17 words
The package as claimed in claim 8 in which said projecting portions include inclined cap lifting sections.
Claim 19
Dependent Claim
117 words
A sealed package comprising the combination of a closure cap having a cover and a depending skirt, a gasket on the interior surface of the cap skirt and around the underside of the margin of the cap cover, a container, a plurality of horizontal slots on said container forming a circular interrupted groove adjacent the container rim, said gasket having horizontal anchoring portions projecting into said slots, radially outwardly directed ramps at ends of said slots for engaging said gasket projections when said cap is turned on said container, and a vent in said container rim position for receiving a portion of said gasket and for being partially opened when said cap is turned on said container.
Claim 20
Dependent Claim
117 words
A sealed package comprising the combination of a closure cap having a cover and a depending skirt, a gasket on the interior surface of the cap skirt and around the underside of the margin of the cap cover, a container, a plurality of horizontal slots on said container forming a circular interrupted groove adjacent the container rim, said gasket having horizontal anchoring portions projecting into said slots, radially outwardly directed ramps at ends of said slots for engaging said gasket projections when said cap is turned on said container, and a vent in said container rim position for receiving a portion of said gasket and for being partially opened when said cap is turned on said container.
Claim 21
Dependent Claim
62 words
A container finish for receiving and engaging a closure cap having a cover and a depending gasket covered skirt comprising a smooth rim portion, a plurality of horizontal and spaced slots forming an interrupted groove around the outside of the container rim, said slots having radially outwardly directed ramps at their ends, and a vent in said finish at said rim portion.
Claim 22
Dependent Claim
62 words
A container finish for receiving and engaging a closure cap having a cover and a depending gasket covered skirt comprising a smooth rim portion, a plurality of horizontal and spaced slots forming an interrupted groove around the outside of the container rim, said slots having radially outwardly directed ramps at their ends, and a vent in said finish at said rim portion.
Claim 23
Dependent Claim
15 words
The package as claimed in claim 16 in which said gasket comprises a plastisol gasket.
Claim 24
Dependent Claim
51 words
A container finish for receiving and engaging a closure cap having a cover and a depending gasket covered skirt comprising a plurality of horizontal and spaced slots forming an interrupted groove around the outside of the container rim, and said slots having radially outwardly directed gasket wiping ramps at their ends.
Claim 25
Dependent Claim
51 words
A container finish for receiving and engaging a closure cap having a cover and a depending gasket covered skirt comprising a plurality of horizontal and spaced slots forming an interrupted groove around the outside of the container rim, and said slots having radially outwardly directed gasket wiping ramps at their ends.
Claim 26
Dependent Claim
46 words
The container finish as claimed in claim 19 in which said rim portion comprises a generally upwardly facing top sealing surface and a generally cylindrical side sealing surface, said vent being positioned in said top sealing surface, and a second detent in said side sEaling surface.
Claim 27
Dependent Claim
29 words
The container finish as claimed in claim 19 in which the portions of the groove intermediate said spaced slots have an at least partially upwardly facing cap lifting portion.
Claim 28
Dependent Claim
113 words
A sealed package comprising the combination of a closure cap having a cover and a depending skirt, a gasket on the interior surface of the cap skirt, a container, a plurality of horizontal slots on said container forming a circular interrupted groove adjacent the container rim, said gasket having horizontal anchoring portions projecting into said slots, radially outwardly directed ramps at the ends of said slots for engaging and wiping off said gasket projections when said cap is turned on said container, and a vent in the container rim being filled with a portion of said gasket and positioned for being at least partially opened when said cap is turned on the container.
Claim 29
Dependent Claim
113 words
A sealed package comprising the combination of a closure cap having a cover and a depending skirt, a gasket on the interior surface of the cap skirt, a container, a plurality of horizontal slots on said container forming a circular interrupted groove adjacent the container rim, said gasket having horizontal anchoring portions projecting into said slots, radially outwardly directed ramps at the ends of said slots for engaging and wiping off said gasket projections when said cap is turned on said container, and a vent in the container rim being filled with a portion of said gasket and positioned for being at least partially opened when said cap is turned on the container.
Claim 30
Dependent Claim
128 words
A sealed package comprising the combination of a closure cap having a cover and a depending skirt, a gasket on the interior surface of the cap skirt and having a portion on the outer portion of the cap cover, a container, a plurality of horizontal slots on said container forming a circular interrupted groove adjacent the container rim, said gasket having horizontal anchoring portions projecting into said slots, radially outwardly directed ramps at the ends of said slots for engaging and wiping off said gasket projections when said cap is turned on said container, and a vent in the container rim filled with a portion of the cover portion of said gasket and positioned for being at least partially opened when said cap is turned on said container.
Claim 31
Dependent Claim
128 words
A sealed package comprising the combination of a closure cap having a cover and a depending skirt, a gasket on the interior surface of the cap skirt and having a portion on the outer portion of the cap cover, a container, a plurality of horizontal slots on said container forming a circular interrupted groove adjacent the container rim, said gasket having horizontal anchoring portions projecting into said slots, radially outwardly directed ramps at the ends of said slots for engaging and wiping off said gasket projections when said cap is turned on said container, and a vent in the container rim filled with a portion of the cover portion of said gasket and positioned for being at least partially opened when said cap is turned on said container.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |