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US 5,072,952 AGranted
Sealing element
AssigneeIrbit Research & Consulting AG
InventorsFritz Irrgeher, Werner Frank
Life of this patent
Estimating the term…
Abstract
The present invention refers to a sealing element, particularly for the sealing of joints, having a foam element which is elastically expandable with delay as a result of impregnation and a substantially air-tight cover. In order to obtain improved tightness of the seal while retaining the advantageous ability of use of such a sealing element, the cover forms an open region within which the foam element is exposed.
Claims15
An expandable sealing element adapted to be held in a compressed condition and respectively to be released for expansion, comprising
- an impregnated foam element having delayed elastic expansion due to impregnation of the foam element with a material having adhesive action, and
- an expandable cover covering the foam element, and wherein
- the cover defines an opening region by which the foam element is exposed for entrance of air, whereby the foam element elastically expands with delay solely by the entrance of the air through the opening region into pores of the foam element, without heating being required, when released from the compressed condition.
Dependencies are inferred from the claim text.