초록 ▼

A transparent thermoformed thermoplastic blister has a product bubble which protrudes from a flange which is connected to a backing card. The bubble has an access opening which is selectably uncovered by a pivotable door hinged to the flange and to a hinge panel by parallel hinges, with the hinge pa

A transparent thermoformed thermoplastic blister has a product bubble which protrudes from a flange which is connected to a backing card. The bubble has an access opening which is selectably uncovered by a pivotable door hinged to the flange and to a hinge panel by parallel hinges, with the hinge panel hinged to the flange to define an over-center hinge arrangement. The lengths of the hinge panel and door, as well as the spring constants of the hinges may be selected to form a closure which will tend to remain opened once opened, or alternatively one which will automatically spring closed when finger pressure on the door is released. The closure may alternatively be formed in a clamshell package. The physical manipulation of the door is similar to the throwing of a light switch, and hence is readily apprehended by new users.

대표청구항 ▼

[ We claim:] [1.] A package comprising:a product bubble which protrudes frontwardly from a flange, the product bubble having a top panel which extends frontwardly from the flange, wherein portions of the top panel define an access opening which opens into the product bubble;a protruding door member

[ We claim:] [1.] A package comprising:a product bubble which protrudes frontwardly from a flange, the product bubble having a top panel which extends frontwardly from the flange, wherein portions of the top panel define an access opening which opens into the product bubble;a protruding door member which extends from the top panel along a first hinge; anda hinge panel which extends from the door member along a second hinge positioned above the first hinge, the hinge panel being connected to the flange at a third hinge which is above the second hinge, wherein the first hinge, the second hinge, and the third hinge are substantially parallel to one another, and wherein the door member is pivotable about the first hinge to selectably reveal and close the bubble access opening. [16.] A thermoformed thermoplastic unitary blister comprising:a blister flange;a hinge panel which is positionable coplanar with the flange, and which is severed from the flange on two sides;a product bubble which protrudes frontwardly from the flange, the product bubble having portions which define an access opening into the product bubble;a door which extends from the product bubble above the access opening, the door extending from the product bubble along a first hinge, and extending from the hinge panel along a second hinge, the hinge panel being pivotable with respect to the flange about a third hinge which is positioned on the flange, the door being pivotable between a first position in which the door closes and blocks access to the access opening, and a second position in which the access opening is revealed, the door being connected to the hinge panel and the product bubble in both the first position and the second position. The blister of claim 16 wherein the first hinge, the second hinge and the third hinge are substantially parallel. The blister of claim 16 wherein the flange encircles the product bubble, and wherein a backing card is fixed to the flange to close the product bubble. The package of claim 18 wherein the hinge panel is affixed to the backing card in the door closed position, wherein the opening of the door causes a portion of the backing card to remain attached to the hinge panel thereby indicating prior opening of the door.