US3705670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Can end with bonded seal slide
Assignee: United States Steel Corp
•
Filing: 1972-01-28
•
Granted: 1972-12-12
•
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 has a pivot on the can end, 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 used 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 a first predetermined shear strength and to the slide lapping 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 rotatable about the pivot 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 surface now functions as an exit and reclosure slide guide. The pull tab causes breakage of the bond between the pressure barrier material adjacent the plane of bulge strength and the slide sealing portion and causes the slide to move through the entry aperture on the pressure barrier material adjacent the plane of bulge strength and such pressure barrier material to act as a guide to uncover the pour opening.
Inventors
- 👤 Donald L Douty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:51
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/20; B65D47/26; B65D47/261; B65D47/265; B65D17/00; B65D17/28; B65D17/401; B65D17/4012; B65D17/50; B65D17/506; B65D47/28; B65D47/286
Claims Analysis
Total Claims: 68
Claim 1
Independent Claim
370 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 having a pivot on said can end and 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 rotatable about said pivot 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 surface now functions as an exit and reclosure slide guide and to break the bond between said pressure barrier material adjacent said plane of bulge strength and said slide sealing portion and to cause said slide to move through said entry aperture on said pressure barrier material adjacent sAid plane of bulge strength and on said pressure barrier material or as a guide to uncover said pour opening.
Claim 2
Dependent Claim
370 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 having a pivot on said can end and 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 rotatable about said pivot 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 surface now functions as an exit and reclosure slide guide and to break the bond between said pressure barrier material adjacent said plane of bulge strength and said slide sealing portion and to cause said slide to move through said entry aperture on said pressure barrier material adjacent sAid plane of bulge strength and on said pressure barrier material or as a guide to uncover said pour opening.
Claim 3
Dependent Claim
58 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 having a pivot on said can end and adapted to pass through said entry aperture and having a slide lapping portion and a slide sealing portion,
Claim 4
Dependent Claim
58 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 having a pivot on said can end and adapted to pass through said entry aperture and having a slide lapping portion and a slide sealing portion,
Claim 5
Dependent Claim
250 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, 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 rotatable about said pivot 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 surface now functions as an exit and reclosure slide guide and to break the bond between said pressure barrier material adjacent said plane of bulge strength and said slide sealing portion and to cause said slide to move through said entry aperture on said pressure barrier material adjacent sAid plane of bulge strength and on said pressure barrier material or as a guide to uncover said pour opening.
Claim 6
Dependent Claim
250 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, 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 rotatable about said pivot 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 surface now functions as an exit and reclosure slide guide and to break the bond between said pressure barrier material adjacent said plane of bulge strength and said slide sealing portion and to cause said slide to move through said entry aperture on said pressure barrier material adjacent sAid plane of bulge strength and on said pressure barrier material or as a guide to uncover said pour opening.
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
31 words
The combination recited in claim 1 wherein said slide has a bulge strength measured in pounds per square inch equal to or greater than the bulge strength of said can end.
Claim 11
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 12
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 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 pivot is integral with one of said can end and said slide.
Claim 15
Dependent Claim
20 words
The combination recited in claim 1 wherein said pivot is separate from one of said can end and said slide.
Claim 16
Dependent Claim
12 words
The combination recited in claim 1 wherein said engaging means is magnetic.
Claim 17
Dependent Claim
27 words
The combination recited in claim 1 and having stop means on said slide for engaging said entry aperture to prevent said slide from leaving said entry aperture.
Claim 18
Dependent Claim
20 words
The combination recited in claim 1 wherein said pivot is sealed to said can end 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
17 words
The combination recited in claim 1 wherein said can end has an 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
28 words
The combination recited in claim 1 wherein said pour opening has substantially straight sides and said entry aperture vents said can end when said pour opening is exposed.
Claim 26
Dependent Claim
27 words
The combination recited in claim 1 wherein said pour opening has arcuate sides and said entry aperture vents said pour opening when said pour opening is exposed.
Claim 27
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab is of the corrugated type.
Claim 28
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab is of the ring type.
Claim 29
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab is of the serrated type.
Claim 30
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab is of the projecting type.
Claim 31
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab is of the waffle type.
Claim 32
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab has a plurality of protuberances.
Claim 33
Dependent Claim
15 words
The combination recited in claim 1 wherein said pull tab has a plurality of cavities.
Claim 34
Dependent Claim
16 words
The combination recited in claim 1 wherein said pull tab is of the embossed aperture type.
Claim 35
Dependent Claim
26 words
The combination recited in claim 1 wherein said slide has a curve of bulge weakness adapted to follow the curve of bulging in said can end.
Claim 36
Dependent Claim
18 words
The combination recited in claim 30 wherein said slide has an embossment adjacent said curve of bulge weakness.
Claim 37
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 38
Dependent Claim
17 words
The combination recited in claim 32 wherein saiD vent aperture is provided with a vent entry aperture.
Claim 39
Dependent Claim
14 words
The combination recited in claim 33 wherein said vent entry aperture is a slot.
Claim 40
Dependent Claim
14 words
The combination recited in claim 33 wherein said vent entry aperture is a slit.
Claim 41
Dependent Claim
18 words
The combination recited in claim 33 wherein said vent entry aperture is provided with a slide guide means.
Claim 42
Dependent Claim
32 words
The combination recited in claim 33 wherein said one vent closure portion has stop means for engaging said entry aperture to prevent said one vent closure portion from leaving said entry aperture.
Claim 43
Dependent Claim
32 words
The combination recited in claim 32 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 44
Dependent Claim
12 words
The combination recited in claim 32 wherein said vent aperture is radial.
Claim 45
Dependent Claim
12 words
The combination recited in claim 32 wherein said vent aperture is chordal.
Claim 46
Dependent Claim
17 words
The combination recited in claim 32 wherein said can end has an embossment around said vent aperture.
Claim 47
Dependent Claim
13 words
The combination recited in claim 41 wherein said vent aperture embossment is upward.
Claim 48
Dependent Claim
16 words
The combination recited in claim 41 wherein said vent aperture embossment is downward for vacuum seals.
Claim 49
Dependent Claim
21 words
The combination recited in claim 32 wherein said one vent closure portion has a locking tab for engaging said can end.
Claim 50
Dependent Claim
14 words
The combination recited in claim 32 wherein said vent aperture has substantially straight sides.
Claim 51
Dependent Claim
13 words
The combination recited in claim 32 wherein said vent aperture has arcuate sides.
Claim 52
Dependent Claim
51 words
The combination recited in claim 32 and having vent closure engaging means, said vent closure engaging means having 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 53
Dependent Claim
13 words
The combination recited in claim 32 having magnetic type vent closure engaging means.
Claim 54
Dependent Claim
22 words
The combination recited in claim 32 wherein said one vent closure portion is integral with either said slide or said pull tab.
Claim 55
Dependent Claim
43 words
The combination recited in claim 32 wherein said one vent closure portion is separate from either said slide or said pull tab and having a vent closure connection for connecting said one vent closure portion to either said slide or said pull tab.
Claim 56
Dependent Claim
15 words
The combination recited in claim 1 wherein said stop means is on said can end.
Claim 57
Dependent Claim
33 words
The combination recited in claim 1 and having stop means on said one vent closure portion for limiting the movement of said slide by engagement of said stop means with said can end.
Claim 58
Dependent Claim
15 words
The combination recited in claim 32 wherein said pull tab is of the expansion type.
Claim 59
Dependent Claim
59 words
The combination recited in claim 32 wherein said one vent closure portion and said slide simultaneously move along a linear chordal path of movement to break the bonds between the pressure barrier material and the slide lapping portion, the pressure barrier material and the plane of bulge strength and the pressure barrier material and said one vent closure portion.
Claim 60
Dependent Claim
55 words
The combination recited in claim 32 wherein said one vent closure portion and said slide move in substantially parallel chordal movement to break the bonds between the pressure barrier material and the slide lapping portion, the pressure barrier material and the plane of bulge strength and pressure barrier material and said one vent closure portion.
Claim 61
Dependent Claim
41 words
The combination recited in claim 54 wherein said slide has a dish portion and said slide is movable outwardly from said can end away from said entry portion so that said dish portion provides a pour lip for said pour opening.
Claim 62
Dependent Claim
29 words
The combination recited in claim 54 wherein said slide is movable inwardly of said can end away from said entry portion of said pour aperture to break said bonds.
Claim 63
Dependent Claim
28 words
The combination recited in claim 32 wherein said slide pivot is disposed outside of a pour opening closure portion of said slide and said one vent closure portion.
Claim 64
Dependent Claim
27 words
The combination recited in claim 32 wherein saId slide pivot is disposed between a pour opening closure portion of said slide and said one vent closure portion.
Claim 65
Dependent Claim
70 words
The combination recited in claim 32 wherein said pull tab is disposed between said one vent closure portion and a pour opening closure portion of said slide, said pull tab being operable by upward movement of said pull tab away from said can end to move said one vent closure portion and said pour opening closure portion inwardly from the periphery of said can end during the bond breaking operation.
Claim 66
Dependent Claim
33 words
The combination recited in claim 60 wherein said pull tab has stop means associated with said pull tab and said can end for limiting the upward bond breaking movement of said pull tab.
Claim 67
Dependent Claim
19 words
The combination recited in claim 60 and having pressure barrier material sealed to said stop and said can end.
Claim 68
Dependent Claim
15 words
The combination recited in claim 32 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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |