Sealing device
OwnerJan Eric Moolenaarsinventor
Life of this patent
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Abstract
A sealing device for a zip fastener, comprising a lock having therethrough a channel, of which a wall portion is resilient and into which can be inserted the shaft of a disposable sealing member comprising a head and a shaft under temporary deformation of the resilient wall portion, and then be retained therein secured against withdrawal and rotation, while the head fixes the pulling lip of the zip fastener and the pulling lip is provided with a rotatable disc having a receiving cavity for the head of the sealing member, all this in such a manner that as a result of rotation of the disc the shaft of the sealing member can be twisted to fracture.
Claims8
In a sealing device for a fastener having a pulling lip, the sealing device including a lock;
- a channel extending at least into said lock, having at least a portion thereof of uncircular cross-section and including wall means;
- a disposable rupturable sealing member which is to be inserted into said channel, said sealing member having a head and a shaft, said shaft having at least an end portion thereof which is of uncircular cross-section and said head being fixable to the pulling lip of the fastener;
- and means coupled to said sealing member for twisting at least that portion of said shaft adjacent said head relative to said end portion which is to be secured against rotation in said portion of said channel of uncircular cross-section for unsealing the device, the improvement wherein said wall means of said channel include at least one resilient portion thereby to allow said end portion of said sealing member to be forced past said resilient portion, said wall means including said resilient portion defining a boundary face which constitutes stop means for said end portion of said shaft when said end portion has been inserted into said channel and rests beneath said resilient portion of said wall means.
Dependencies are inferred from the claim text.