Sealing method using heat-shrinkable film
AssigneeDoryokuro Kakunenryo Kaihatsu Jigyodan
InventorsTakaaki Shibata, Tetsuhiro Yamamoto
Life of this patent
Estimating the term…
Abstract
A method for sealing an object having a peripheral surface, surfaces substantially perpendicular to the peripheral surface and infinite enlongated bodies projecting from the surfaces perpendicular to the peripheral surface, which method comprises: wrapping the peripheral surface with a heat-shrinkable film in such a manner that both side edges of the film extend beyond the side edges of the peripheral surface; bonding longitudinal edges of the film to each other; and heating the heat-shrinkable film to permit the film to shrink to thereby seal the peripheral surface and a peripheral portion of the surfaces perpendicular to said peripheral surface, except said infinite elongated bodies.
Claims9
A method for indicating tampering of an element positioned in a transmission system, the element having a peripheral surface facing outwardly and spaced from other components of the transmission system and having side surfaces extending inwardly from said peripheral surface, said method using a heat shrinkable film carrying identifying indicia thereon and comprising:
- wrapping said peripheral surface with the heat-shrinkable film in such a manner that both side edges of said film extend beyond the side edges of said peripheral surface;
- bonding longitudinal edges of said film to each other;
- and
- heating said heat-shrinkable film to permit said film to shrink to thereby seal said peripheral surface and a portion of said side surfaces adjacent to said peripheral surface, the film adapted to shrink to protect the element so that access to the element requires alteration of the film thereby providing an indication of such access.
Dependencies are inferred from the claim text.