US3703979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Can end with bonded seal slide
Assignee: United States Steel Corp
•
Filing: 1972-01-28
•
Granted: 1972-11-28
•
Expires: 1992-01-28
Abstract
Abstract A can end is provided with a pour opening having a pour width. The pour opening is provided with an entry aperture at one end of the pour opening. The entry aperture has a slide width greater than the pour width. The can end has a can end lapping portion and a can end sealing portion adjacent the pour opening and a plane of bulge strength adjacent the entry aperture. A slide is adapted to pass through the entry aperture and has a slide lapping portion and a slide sealing portion. The slide lapping portion is adapted to register with the can end lapping portion, and the slide sealing portion is adapted to register with the plane of bulge strength. A pull tab has a connection to the slide. Engaging means engage the can end lapping portion to press the can end lapping portion into intimate contact with the slide lapping portion and the slide sealing portion into intimate contact with the plane of bulge strength. A pressure barrier material is employed for sealing the intimately contacting can end sealing portion and the slide lapping portion and also for sealing the intimately contacting plane of bulge strength and the slide sealing portion. The pressure barrier material is bonded to the can end sealing portion with the first predetermined shear strength and to the slide lapping portion and to the plane of bulge strength with a second predetermined shear strength less than the first predetermined shear strength. The pull tab is operable to move the slide lapping portion away from the can end lapping portion to break the bond between the slide lapping portion and the pressure barrier material adjacent the can end sealing portion so that the pressure barrier material adjacent the can end sealing portion now functions as an exit and reclosure slide guide. The pull tab is simultaneously operable to move the slide sealing portion away from such plane of bulge strength to break the bond between the pressure barrier material adjacent the plane of bulge strength and the slide sealing portion so that the pressure barrier material adjacent the plane of bulge strength acts as a guide to uncover the pour opening.
Inventors
- 👤 Donald L Douty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:48
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/34; B65D17/347; B65D17/50; B65D17/506; B65D47/00; B65D47/04; B65D47/20; B65D47/26; B65D47/28; B65D47/286
Claims Analysis
Total Claims: 50
Claim 1
Independent Claim
376 words
In combination: a. a can end provided with a pour opening having a pour width, 1. said pour opening being provided with an entry aperture at one end of said pour opening, said entry aperture having a slide width greater than said pour width, 2. said can end having a can end lapping portion and a can end sealing portion adjacent said pour opening and a plane of bulge strength adjacent said entry aperture, b. a slide adapted to pass through said entry aperture and having a slide lapping portion and a slide sealing portion, 1. said slide lapping portion being adapted to register with said can end lapping portion, and 2. said slide sealing portion being adapted to register with said plane of bulge strength, c. a pull tab having a connection to said slide, d. engaging means engaging said can end lapping portion to press said can end lapping portion into intimate contact with said slide lapping portion and said slide sealing portion into intimate contact with said plane of bulge strength, e. a pressure barrier material for sealing said intimately contacting can end sealing portion and said slide lapping portion and also for sealing said intimately contacting plane of bulge strength and said slide sealing portion, 1. said pressure barrier material being bonded to said can end sealing portion with a first predetermined shear strength and to said slide lapping portion and to said plane of bulge strength with a second predetermined shear strength less than said first predetermined shear strength, f. said pull tab being operable to move said slide lapping portion away from said can end lapping portion to break the bond between said slide lapping portion and said pressure barrier material adjacent said can end sealing portion so that said pressure barrier material adjacent said can end sealing portion now functions as an exit and reclosure slide guide, and g. said pull tab being simultaneously operable to move said slide sealing portion away from said plane of bulge strength to break the bond between said pressure barrier material adjacent said plane of bulge strength and said slide sealing portion so that said pressure barrier material adjacent said plane of bulge strength acts as a guide to uncover said pour opening.
Claim 2
Dependent Claim
376 words
In combination: a. a can end provided with a pour opening having a pour width, 1. said pour opening being provided with an entry aperture at one end of said pour opening, said entry aperture having a slide width greater than said pour width, 2. said can end having a can end lapping portion and a can end sealing portion adjacent said pour opening and a plane of bulge strength adjacent said entry aperture, b. a slide adapted to pass through said entry aperture and having a slide lapping portion and a slide sealing portion, 1. said slide lapping portion being adapted to register with said can end lapping portion, and 2. said slide sealing portion being adapted to register with said plane of bulge strength, c. a pull tab having a connection to said slide, d. engaging means engaging said can end lapping portion to press said can end lapping portion into intimate contact with said slide lapping portion and said slide sealing portion into intimate contact with said plane of bulge strength, e. a pressure barrier material for sealing said intimately contacting can end sealing portion and said slide lapping portion and also for sealing said intimately contacting plane of bulge strength and said slide sealing portion, 1. said pressure barrier material being bonded to said can end sealing portion with a first predetermined shear strength and to said slide lapping portion and to said plane of bulge strength with a second predetermined shear strength less than said first predetermined shear strength, f. said pull tab being operable to move said slide lapping portion away from said can end lapping portion to break the bond between said slide lapping portion and said pressure barrier material adjacent said can end sealing portion so that said pressure barrier material adjacent said can end sealing portion now functions as an exit and reclosure slide guide, and g. said pull tab being simultaneously operable to move said slide sealing portion away from said plane of bulge strength to break the bond between said pressure barrier material adjacent said plane of bulge strength and said slide sealing portion so that said pressure barrier material adjacent said plane of bulge strength acts as a guide to uncover said pour opening.
Claim 3
Dependent Claim
50 words
said can end having a can end lapping portion and a can end sealing portion adjacent said pour opening and a plane of bulge strength adjacent said entry aperture, b. a slide adapted to pass through said entry aperture and having a slide lapping portion and a slide sealing portion,
Claim 4
Dependent Claim
50 words
said can end having a can end lapping portion and a can end sealing portion adjacent said pour opening and a plane of bulge strength adjacent said entry aperture, b. a slide adapted to pass through said entry aperture and having a slide lapping portion and a slide sealing portion,
Claim 5
Dependent Claim
97 words
said slide sealing portion being adapted to register with said plane of bulge strength, c. a pull tab having a connection to said slide, d. engaging means engaging said can end lapping portion to press said can end lapping portion into intimate contact with said slide lapping portion and said slide sealing portion into intimate contact with said plane of bulge strength, e. a pressure barrier material for sealing said intimately contacting can end sealing portion and said slide lapping portion and also for sealing said intimately contacting plane of bulge strength and said slide sealing portion,
Claim 6
Dependent Claim
97 words
said slide sealing portion being adapted to register with said plane of bulge strength, c. a pull tab having a connection to said slide, d. engaging means engaging said can end lapping portion to press said can end lapping portion into intimate contact with said slide lapping portion and said slide sealing portion into intimate contact with said plane of bulge strength, e. a pressure barrier material for sealing said intimately contacting can end sealing portion and said slide lapping portion and also for sealing said intimately contacting plane of bulge strength and said slide sealing portion,
Claim 7
Dependent Claim
13 words
The combination recited in claim 1 wherein said entry aperture is a slit.
Claim 8
Dependent Claim
13 words
The combination recited in claim 1 wherein said entry aperture is a slot.
Claim 9
Dependent Claim
17 words
the combination recited in claim 1 wherein said entry aperture is provided with a slide guide means.
Claim 10
Dependent Claim
29 words
The combination recited in claim 1 wherein said slide has a bulge strength measured in lbs./sq. inch equal to or greater than the bulge strength of said can end.
Claim 11
Dependent Claim
44 words
The combination recited in claim 1 wherein said engaging means has a stationary member supporting one member of said pull tab, said slide and said can end and a movable member engaging another member of said pull tab, said slide and said can end.
Claim 12
Dependent Claim
20 words
The combination recited in claim 1 wherein said engaging means is said pull tab engaging said can end lapping portion.
Claim 13
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab is integral with said slide.
Claim 14
Dependent Claim
20 words
The combination recited in claim 1 wherein said connection is integral with one of said pull tab and said slide.
Claim 15
Dependent Claim
19 words
The combination recited in claim 1 wherein said connection is separate from either said pull tab or said slide.
Claim 16
Dependent Claim
12 words
The combination recited in claim 1 wherein said connection is a weld.
Claim 17
Dependent Claim
12 words
The combination recited in claim 1 wherein said connection is an adhesive.
Claim 18
Dependent Claim
19 words
The combination recited in claim 1 wherein said connection is sealed to said slide by said pressure barrier material.
Claim 19
Dependent Claim
12 words
The combination recited in claim 1 wherein said pour opening is radial.
Claim 20
Dependent Claim
12 words
The combination recited in claim 1 wherein said pour opening is chordal.
Claim 21
Dependent Claim
19 words
The combination recited in claim 1 wherein said can end has a pour opening embossment around said pour opening.
Claim 22
Dependent Claim
11 words
The combination recited in claim 16 wherein said embossment is upward.
Claim 23
Dependent Claim
14 words
The combination recited in claim 16 wherein said embossment is downward for vacuum sealing.
Claim 24
Dependent Claim
18 words
The combination recited in claim 1 wherein said slide has a locking tab for engaging said can end.
Claim 25
Dependent Claim
17 words
The combination recited in claim 1 wherein said locking tab has a locking tab plane of weakness.
Claim 26
Dependent Claim
14 words
The combination recited in claim 1 wherein said pour opening has substantially straight sides.
Claim 27
Dependent Claim
13 words
The combination recited in claim 1 wherein said pour opening has arcuate sides.
Claim 28
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab is of the corrugated type.
Claim 29
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab is of the ring type.
Claim 30
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab is of the serrated type.
Claim 31
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab is of the projecting type.
Claim 32
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab is of the waffle type.
Claim 33
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab has a plurality of protuberances.
Claim 34
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab has a plurality of cavities.
Claim 35
Dependent Claim
82 words
The combination recited in claim 1 wherein said can end is provided with a vent aperture and one vent closure portion of said slide or said pull tab is adapted to cover said vent aperture, said pressure barrier material being adapted to seal said vent aperture to said one vent closure portion, said one vent closure portion being operable to break said seal between said vent aperture and said one vent closure portion when said slide moves out of said entry aperture.
Claim 36
Dependent Claim
17 words
The combination recited in claim 30 wherein said vent aperture is provided with a vent entry aperture.
Claim 37
Dependent Claim
14 words
The combination recited in claim 31 wherein said vent entry aperture is a slot.
Claim 38
Dependent Claim
14 words
The combination recited in claim 32 wherein said vent entry aperture is a slit.
Claim 39
Dependent Claim
20 words
The combination recited in claim 31 wherein said vent entry aperture is provided with a vent closure portion guide means.
Claim 40
Dependent Claim
32 words
The combination recited in claim 31 and having stop means on either said vent closure portion or said can end for preventing said vent closure portion from leaving said vent entry aperture.
Claim 41
Dependent Claim
32 words
The combination recited in claim 30 wherein said one vent closure portion has a bulge strength measured in lbs./sq. inch equal to or greater than the bulge strength of said can end.
Claim 42
Dependent Claim
12 words
The combination recited in claim 30 wherein said vent aperture is radial.
Claim 43
Dependent Claim
12 words
The combination recited in claim 30 wherein said vent aperture is chordal.
Claim 44
Dependent Claim
19 words
The combination recited in claim 30 wherein said can end has a vent aperture embossment around said vent aperture.
Claim 45
Dependent Claim
13 words
The combination recited in claim 39 wherein said vent aperture embossment is upward.
Claim 46
Dependent Claim
16 words
The combination recited in claim 39 wherein said vent aperture embossment is downward for vacuum seal.
Claim 47
Dependent Claim
21 words
The combination recited in claim 30 wherein said one vent closure portion has a locking tab for engaging said can end.
Claim 48
Dependent Claim
14 words
The combination recited in claim 30 wherein said vent aperture has substantially straight sides.
Claim 49
Dependent Claim
13 words
The combination recited in claim 30 wherein said vent aperture has arcuate sides.
Claim 50
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab is of the expansion type.
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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |