← Back to Patent Explorer
US4055275A Expired / Lapsed US ⏱️ 0.0 years remaining

Retainable tab construction for sealed cans

Assignee: Individual
•
Filing: 1977-01-03
•
Granted: 1977-10-25
•
Expires: 1997-01-03
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A "pop-top" or "snap-open" can is provided with means for retaining the tab defined by a weakened section, following its severence from the top for opening the can. A rivet extends upwardly from the weakened portion and is engaged with an elongated key having a handle at one end. The shank of the key is provided with a slot through which the rivet extends so that the key is slidable between a first position at which the key is disposed within the periphery of the can top and a second position at which the handle extends beyond the can top periphery. In this extended position the handle may be manually grasped and digitally twisted for purposes of severing the tab from the top by twisting or curling it around the shank of the key. A second rivet extends upwardly from the top and is provided with a swivel connection for the key that permits its twisting motion; and, at the same time, the retained key may be pivoted away from the can top opening after the tab has been severed. Raised projections on the top of the can are adapted to receive the shank of the key to latch the key with severed tab in place away from the opening and consequently away from the face of the consumer.

Inventors

  • 👤 Herbert Gontar

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 21:39
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4012

Claims Analysis

Total Claims: 15
Claim 1
Independent Claim 133 words
A sealed can comprising: a top, side walls, and a bottom defining a sealed interior compartment, the top having a weakened section defining a tab adapted to be disassociated from the top to provide access to the interior compartment, a first key engaging means extending from the weakened section, an elongated substantially rigid key, first connecting means for slidably connecting the key and key engaging means to facilitate manual engagement of the key and digital manipulation thereof to sever the tab from the top to provide a top opening defined by the weakened section, a second key engaging means extending from the top, and second connecting means for shifting the key and severed tab away from the opening to permit access to the interior compartment without interference from the key and severed tab.
Claim 2
Dependent Claim 133 words
A sealed can comprising: a top, side walls, and a bottom defining a sealed interior compartment, the top having a weakened section defining a tab adapted to be disassociated from the top to provide access to the interior compartment, a first key engaging means extending from the weakened section, an elongated substantially rigid key, first connecting means for slidably connecting the key and key engaging means to facilitate manual engagement of the key and digital manipulation thereof to sever the tab from the top to provide a top opening defined by the weakened section, a second key engaging means extending from the top, and second connecting means for shifting the key and severed tab away from the opening to permit access to the interior compartment without interference from the key and severed tab.
Claim 3
Dependent Claim 84 words
The invention in accordance with claim 1, wherein the first key engaging means includes a rivet having a lower end in sealing engagement with surfaces of the weakened section of the top and an upper head projecting beyond the top in engagement with the key, and the first connecting means includes an elongated slot in the key for receiving the rivet, with the rivet head being larger then the transversed dimension of the slot for purposes of slidably connecting the key to the rivet.
Claim 4
Dependent Claim 61 words
The invention in accordance with claim 1, wherein the key is slidable from a first position at which it is disposed interiorly of the periphery of the top and a second position at which manual engagable portions of the key extend beyond the periphery of the top to facilitate digital manipulation of the key to sever the tab from the top.
Claim 5
Dependent Claim 43 words
The invention in accordance with claim 3, wherein twisting means are provided for permitting twisting of the key when in the second position to sever the tab from the top by curling the weakened portion about the key as the key is twisted.
Claim 6
Dependent Claim 23 words
The invention in accordance with claim 4, wherein limiting means are provided for limiting the longitudinal movement between the first and second positions.
Claim 7
Dependent Claim 43 words
The invention in accordance with claim 5, wherein the limiting means further includes stop means which restricts the movement of the key relative to the second connecting means after the tab has been severed from the top and moved away from the opening.
Claim 8
Dependent Claim 40 words
The invention in accordance with claim 1, wherein the second connecting means is defined by a pivotal connection between the key and second key engaging means to permit the key with severed tab to be shifted away from the opening.
Claim 9
Dependent Claim 23 words
The invention in accordance with claim 7, wherein limiting means are provided for limiting the longitudinal movement between the first and second positions.
Claim 10
Dependent Claim 43 words
The invention in accordance with claim 8, wherein the limiting means further includes stop means which restricts the movement of the key relative to the second connecting means after the tab has been severed from the top and moved away from the opening.
Claim 11
Dependent Claim 24 words
The invention in accordance with claim 7, wherein the pivotal connection also permits twisting of the key to sever the tab from the top.
Claim 12
Dependent Claim 30 words
The invention in accordance with claim 7, wherein both of the second means cooperate to retain the key on the can top following severence of the tab from the top.
Claim 13
Dependent Claim 30 words
The invention in accordance with claim 1, wherein the key includes a handle at one end and a stop at the other and engagable with the second key engaging means.
Claim 14
Dependent Claim 52 words
The invention in accordance with claim 1, wherein interengaging surfaces of the key and a pair of spaced raised projections extending upwardly from the top define latching means to latch the key securely between the space between the projections after the key with severed tab has been shifted away from the opening.
Claim 15
Dependent Claim 346 words
The invention in accordance with claim 1, wherein the first key engaging means includes a rivet having a lower end in sealing engagement with surfaces of the weakened section of the top and an upper head projecting beyond the top in engagement with the key, and the first connecting means including an elongated slot in the key for receiving the rivet, with the rivet head being larger then the transversed dimension of the slot for purposes of slidably connecting the key to the rivet, the key having a handle at one end, the key being slidable from a first position at which it is disposed interiorly of the periphery of the top and a second position at which the handle of the key extends beyond the periphery of the top to facilitate digital manipulation of the key to sever the tab from the top, the key when in the second position being adapted to sever the tab from the top by curling the weakened portion about the key as the key is twisted, limiting means are provided for limiting the longitudinal movement between the first and second positions, the limiting means further includes stop meas which restricts the movement of the key relative to the second connecting means after the tab has been severed from the top and moved away from the opening, the second connecting means being defined by a pivotal connection between the key and second key engaging means to permit the key with severed tab to be shifted away from the opening, the pivotal connection permitting twisting of the key to sever the tab from the top, the key includes a stop at the other end engagable with the second key engaging means for retaining the key on the top after the tab has been severed from the top, interengaging surfaces of the key and a pair of spaced raised projections extending upwardly from the top define latching means to retain the key securely between the space between the projections after the key with severed tab has been shifted away from the opening.

References Cited (Backward Citations)

US1961909A Cited
US3830399A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-10-24 1981-04-25 1981-10-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-10-24 1985-04-25 1985-10-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-10-24 1989-04-25 1989-10-25 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag