Abstract: A paint can having a body with a curl at its upper open end and a plug having a downwardly open groove defined by an upright wall formed to fit within the open end of the body, a radial bight which in the closed position of the plug overlaps the curl and compress a sealing band thereagainst, and an outer flange with an inwardly offset lower portion which snaps under the curl, the lower edge of the flange having an inturned curl which is sprung into an annular groove in the body wall, the portion of the wall defining the said annular groove forming an annular internal rib on the body which enters a complimentary groove in the plug side wall. A handle is provided connected to a band encircling the body and abuts the lower edge of the outer flange of the plug in the closed position, the band sliding upwardly with the handle and extending into the body curl when the plug is removed.

Abstract: This relates to the formation of a line of weakening in the form of a score in a metal sheet for defining a line along which the metal sheet may be ruptured. It has been found that when the metal sheet in the area which is to be scored is compressed, the metal sheet may be more easily scored to a controlled residual with a minimum of undue fracture. Accordingly, beads are coined on the underside of the metal sheet on opposite sides of the intended position of the score in a first operation to compress the metal. The then compressed metal is engaged by a conventional scoring die on the opposite surface thereof and scoring of the metal is effected in the normal manner.

Abstract: A paint can having a curl about its upper open end, the curl being fabricated at diametrically spaced areas to provide means for attachment of a bail.

Abstract: A scoring tool combination wherein the score anvil is provided with a pair of transversely spaced generally rounded material compressing ribs disposed on opposite sides of the scoring rib of the score tool. The material compressing ribs compress the material of the sheet being scored on opposite sides of the score so as to strengthen the sheet and thus permit deeper scoring and lesser score residuals without failure due to cracking. The material compressing ribs also control coating damage and exposed metal areas.

Abstract: A container having a rigid wall with a sacrificial anode non-removably attached to the inner surface thereof. Both the container wall and the anode are formed with nested integral rivets, whereby the anode is held in close contact with the container wall. Formation of the rivet on the container wall causes fracture of the protective enamel or lacquer coating thereon, and exposure of the underlying metal, whereby electrical contact between the anode and the container wall is established.There is also disclosed a method or methods of achieving the attachment of the anode to the container wall in accordance with the present invention.

Abstract: A pull tab of the type having a mounting ear which is rigidly secured to a container panel and wherein a major portion of the tab is hingedly connected to the mounting ear for pivoting to an operative position. The mounting ear is defined by a generally C-shaped lance or cut line and the tab is distinguished by having a child proof feature in the form of one or more interruptions of the lance or cut line with the interruption being selectively a full thickness portion of the tab body or a portion of the tab body having a score formed therein whereby the force necessary to effect a separation of the tab body from the mounting ear so that the tab body may hinge relative to the mounting ear may be selectively varied so as to control the force required to place the tab in a use condition, and thus permit the use of the tab to be restricted to persons other than children of a generally selected age.

Abstract: An improved non-detachable easy-opening end closure wherein the pull tab includes an integral strap member co-operating with the tab attachment rivet to limit the angular displacement of the tab relative to the opening flap, whereby the tab protrusion of the opened end closure is minimized and the tab is more securely attached to the end panel and which also functions to cause the tab and flap to move into the container during opening to a position where it is non-obstructive.

Abstract: An easy opening end closure is arranged and adapted to accommodate pouring of products with varying viscosities. The end panel includes a number of portions disposed to obstruct displacement of the tab and thereby limit opening of the closure to a predetermined segment thereof. The portions are deflectable to a non-obstructing position by application of sufficient force thereagainst, enabling the user to determine the size of the pour opening by controlling the number of segments opened.

Abstract: An improved front opening easy-open end closure wherein the opening flap is formed with an auxiliary score line rupturable to form a vent opening, and the pull tab is provided with an auxiliary rupturing member comprising a panelwardly directed protrusion, superposed in relation to the auxiliary score line and arranged such that displacement of the tab to open the flap results in prior rupture of the auxiliary score line and venting of the container.

Abstract: An improved easy-opening end closure of the full panel pull-out type, wherein the pull tab includes an integral tether cooperating with the tab attachment rivet to redistribute the opening stresses impressed on the pull tab during opening, whereby tearing of the pull tab is prevented.

Abstract: A child resistant safety closure for an easy-open can has a tether which restrains movement of the pull tab. The tether is integral with the tab and extends into the interior of the tab ring. The distal end of the tether is removably attached to an auxiliary rivet formed in the end panel. Opening the container requires application of sufficient force to cause disengagement of the tether from the auxiliary rivet. This is beyond the experience or physical capabilities of small children.

Abstract: An improved easy-open end closure pull tab comprising a double folded rivet panel having a lower portion which is carried beyond the outer periphery of the tab ring to form a nose. The panel fold functions as a spring to bias the tab away from the end panel of an end closure after assembly and raises the tab above the end panel so that the tab is springy which increases its abuse resistance. The double folded rivet panel construction allows machining the tab from thin sheet stock.

Abstract: An improved vented, easy-opening end closure having an opening score line and a vent score line and a pull tab provided with an integral tether secured to the end panel and operative to effect, in the areas immediately adjacent the ends of the vent score line, primarily tension stresses and to reduce the stress components normal to the end panel which tear the end panel and thus frustrate opening of the container.

Abstract: An improved pull tab mounting arrangement for an easy open end closure member, characterized by the provision of improved pull tab positioning means for maintaining the pull tab in a desired orientation relative to the panel-defining score line and minimizing tab protrusion from the end closure member. A pierced hole forming a protrusion with a jagged edge is incorporated in the tab nose portion between the free extremity of the tab and the rivet means that secures the tab to the end panel member. The jagged protruding edge of the protrusion is driven into the end panel member during the staking operation, thereby providing an anti-rotation interlock between the tab and the end panel which prevents rotation of the tab nose relative to the score line. The protrusion further serves to raise the nose portion of the tab relative to the end panel thereby biasing the tab against the end panel upon staking of the rivet which forces the finger grip portion of the tab into close contact with the end panel.

Abstract: An improved pull tab mounting arrangement for an easy open end closure member, characterized by the provision of improved pull tab positioning means for maintaining the pull tab in a desired orientation relative to the panel-defining score line and minimizing tab protrusion from the end closure member. A depression is formed in the end panel and a pierced hole forming a protrusion with a jagged edge is incorporated in the tab nose portion above the depression, between the free extremity of the tab and the rivet means that secures the tab to the end panel member. The jagged protruding edge of the protrusion is driven into the base portion of the depression during the staking operation, thereby providing an anti-rotation interlock between the tab and the end panel. The depression serves as a detent positively restraining rotation of the tab and displacement of the nose relative to the score line.

Abstract: An improved easy-open end closure has a generally C-shaped ancillary scoreline in the end panel closely adjacent a rivet which is positioned between a piercing portion of a tab to which it is attached and at least a portion of the rupturable ancillary scoreline. The peculiar shape of the scoreline, with its inwardly looped ends, facilitates movement of the handle portion of the tab away from the end panel by rendering the adjacent portion of the end panel more flexible and minimizes tear out of the flexing portion of the panel by substantially eliminating areas of stress concentration.