Elastomeric sealing device
US4838732A · kind A · utility
30Cited by
18References
3Claims
0Family size
Inventors
Key dates
| Filing date | May 12, 1982 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | May 12, 2002 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D29/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An elastomeric sealing device to prevent ingress of surface fluids into holes, principally drains which are characterized by non-watertight covers or grilles with either regular or irregular topographic boundaries. The device comprises a three-part construction, including a top film, a core elastomer having minimal shear strength, and a bottom film. When in use, the device conforms to contour of adjacent hole covering device and fills existing crevices and voids, thereby providing an efficient seal. When removed from hole, device recovers neutral shape thereby being suitable for re-use on same or different hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.