Electricity: conductors and insulators – Anti-inductive structures – Conductor transposition
Patent
1988-04-15
1989-08-15
Nimmo, Morris H.
Electricity: conductors and insulators
Anti-inductive structures
Conductor transposition
H05K 900
Patent
active
048576689
ABSTRACT:
A multi-function gasket for electrical apparatus and the like, operation of which tends to generate or be adversely affected by electromagnetic and radio frequency interference (EMI/RFI), comprising: a continuously molded, resilient foam core having a sealed outer boundary layer when cured; a flexible, electrically conductive and substantially abrasion resistant sheath surrounding the foam core and bonded to the boundary layer as the foam expands within and fills the interior of the sheath during the molding; and, mounting structure for affixing the gasket. The apparatus may be sealed against EMI/RFI leakage, noise emission and enviromental infiltration through perimeter gaps of electrically conductive doors, access panels and the like by the actions and interactions of the sheath, the foam core and the boundary layer. The flexible sheath is continuously pressed into positive engagement with the conductive surfaces between which it is mounted by the resilient foam core, forming a continuous electrical path across the gaps and preventing EMI/RFI leakage through the gaps. The boundary layer prevents noise emission and environmental infiltration across the gaps. The sheath protects the boundary layer against damage from abrasion and the like.
REFERENCES:
patent: 2477267 (1949-07-01), Robinson
patent: 3312769 (1967-04-01), La Kaff
patent: 3446906 (1969-05-01), Zulauf
patent: 3555168 (1971-01-01), Frykberg
patent: 3700368 (1972-10-01), Wells
patent: 3781390 (1973-12-01), Wells
patent: 3889043 (1975-06-01), Ducros
patent: 4098633 (1978-07-01), Kersten
patent: 4652695 (1987-03-01), Busby
patent: 4659869 (1987-04-01), Busby
patent: 4684762 (1987-08-01), Gladfelter
patent: 4720606 (1988-01-01), Senn
"Q-Lon"weatherstrip advertising brochure, Oct., 1982.
Chomerics Corp. catalog, pp. 15-43 (publication date unknown).
Schlegel EMI Shielding Gaskets-Technical Data published May, 1987, less than one year prior to filing.
Nimmo Morris H.
Schlegel Corporation
LandOfFree
Multi-function gasket does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-function gasket, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-function gasket will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-122912