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US 4,362,198 AGranted
Closure device
AssigneeUnion Carbide Corporation
InventorEwald A. Kamp
Life of this patent
Estimating the term…
Abstract
A closure fastening device comprises a first channel element including hook portions facing away from each other and a second channel element including hook portions facing towards each other, whereby the channel elements interlock by pressing the first channel element into the second channel element so that the hook portions engage each other at predetermined contact surfaces. The closure fastening device can be connected to the opening of a container to form a container capable of being closed and opened.
Claims22
A container including two sidewalls and a closure fastening device consisting essentially of:
- a first u-shaped channel element including a first base portion having one side connected to one of said sidewalls, a pair of spaced apart first webs extending from said first base portion, and first hook portions extending from each of said first webs and facing away from each other;
- and a second u-shaped channel element including a second base portion, a pair of spaced apart second webs extending from said second base portion having one side connected to the other sidewall, and second hook portions nonlinearly extending from each of said second webs and facing towards each other;
- one of said channel elements further comprising a spring element extending from its base portion to the base portion of said second channel element when said channel elements are occluded;
- said bases being of sufficient width to allow at least one of them to flex during the occlusion and opening of said fastening devices:
- said channel elements being adapted to interlock by pressing said first channel element into said second channel element so that said first and said second hook portions engage at predetermined pairs of contact surfaces, one of said pairs of said contact surfaces defining a negative angle of engagement and the other of said pairs of said contact surfaces defining either a positive or a zero angle of engagement;
- and
- said channel elements establishing an open compartment defined by the interior surfaces of said first and second base portion and first and second web portion when said channel elements are occluded,
- each of said channel elements having substantially the same cross section along its occludable length.
5 more elements
A container including two sidewalls and a closure fastening device consisting essentially of:
- a first u-shaped channel element including a first base portion having one side connected to one of said sidewalls, a pair of spaced apart first webs extending from said first base portion, and
- first hook portions extending from each of said first webs and facing away from each other;
- and
- a second u-shaped channel element including a second base portion, a pair of spaced apart second webs extending from said second base portion having one side connected to the other sidewall, and
- second hook portions nonlinearly extending from each of said second webs and facing towards each other;
- one of said channel elements further comprising a spring element extending from its base portion to the other base portion when said channel elements are occluded;
- said bases being of sufficient width to allow at least one of them to flex during the occlusion and opening of said fastening device:
- said channel elements being adapted to interlock by pressing said first channel element into said second channel element so that said first and said second hook portions engage at predetermined pairs of contact surfaces defining a negative angle of engagement;
- and
- said channel elements establishing an open compartment defined by the interior surfaces of said first and second base portion and first and second web portion when said channel elements are occluded
- each of said channel elements having substantially the same cross section along its occludable length.
8 more elements
A closure fastening device consisting essentially of:
- a first u-shaped channel element including
- a first base portion, a pair of spaced apart first webs extending from said first base portion, and first hook portions extending from each of said first webs and facing away from each other;
- and a second u-shaped channel element including a second base portion, a pair of spaced apart second webs extending from said second base portion, and second hook portions nonlinearly extending from each of said second webs and facing towards each other;
- said bases being of sufficient width to allow at least one of them to flex during the occlusion and opening of said fastening device;
- said channel elements being adapted to interlock by pressing said first channel element into said second channel element so that said first and said second hook portions engage at predetermined pairs of contact surfaces, one of said pairs of said contact surfaces defining a negative angle of engagement and the other of said pairs of said contact surfaces defining either a positive or a zero angle of engagement;
- and
- said channel elements establishing an open compartment defined by the interior surfaces of said first and second base portion when said channel elements are occluded,
- each of said channel elements having substantially the same cross section along its occludable length.
5 more elements
The closure fastening device of claim, 18 wherein said channel elements are positioned on opposite sides of said film.
A closure fastening device consisting essentially of:
- a first u-shaped channel element including a first base portion, a pair of spaced apart first webs extending from said first base portion, and first hook portions extending from each of said first webs and facing away from each other;
- and a second u-shaped channel element including a second base portion, a pair of spaced apart second webs extending from said second base portion, and second hook portions nonlinearly extending from each of said second webs and facing towards each other;
- said first channel element further comprising a spring element extending from its base portion to the base portion of said second channel element when said channel elements are occluded;
- said channel elements being adapted to interlock by pressing said first channel element into said second channel element so that said first and said second hook portions engage at predetermined pairs of contact surfaces, one of said pairs of said contact surfaces defining a negative angle of engagement;
- and
- said channel elements establishing an open compartment defined by the interior surfaces of said first and second base portions and first and second web portions when said channel elements are occluded,
- each of said channel elements having substantially the same cross section along its occludable length.
4 more elements
A closure fastening device consisting essentially of:
- a first u-shaped channel element including a first base portion, a pair of spaced apart first webs extending from said first base portion, and first hook portions extending from each of said first webs and facing away from each other;
- and a second u-shaped channel element including a second base portion, a pair of spaced apart second webs extending from said second base portion, and second hook portions nonlinearly extending from each of said second webs and facing towards each other;
- said first channel element further comprising a spring element extending from its base portion to the base portion of said second channel element when said channel elements are occluded;
- said channel elements being adapted to interlock by pressing said first channel element into said second channel element so that said first and said second hook portions engage at predetermined pairs of contact surfaces, one of said pairs of said contact surfaces defining a negative angle of engagement and the other of said pairs of said contact surfaces defining either a positive or a zero angle of engagement;
- and
- said channel elements establishing an open compartment defined by the interior surfaces of said first and second base portions and first and second web portions when said channel elements are occluded;
- each of said channel elements having substantially the same cross section along its occludable length.
4 more elements
Dependencies are inferred from the claim text.