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Publication numberUSD447223 S1
Publication typeGrant
Application numberUS 29/104,424
Publication dateAug 28, 2001
Filing dateMay 5, 1999
Priority dateNov 6, 1998
Publication number104424, 29104424, US D447223 S1, US D447223S1, US-S1-D447223, USD447223 S1, USD447223S1
InventorsLars-Ake Mattsson, Pontus Andersson, Kenneth Lennartsson, Tomas Persson
Original AssigneeLindab Ab
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sealing rings for ventilation ducts
US D447223 S1
Images(3)
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Claims(1)
  1. The ornamental design for sealing rings for ventilation ducts, as shown.
Description

FIG. 1 is a perspective view of a sealing ring according to a first embodiment of the new design, as seen obliquely from one side.

FIG. 2 is a cross-sectional view of the sealing ring of FIG. 1 shown on an enlarged scale.

FIG. 3 is a perspective view of a sealing ring according to a second embodiment of the new design, as seen obliquely from one side; and,

FIG. 4 is a cross-sectional view of the sealing ring of FIG. 3 shown on an enlarged scale.

Non-Patent Citations
Reference
1"Sistema Di Tnenuta Ring", issued by Climovent Ssytem, an Italian Company no date.
2"Veloduct" catalog 1977, ABB Ventilation Products AB, Division Veloduct.
3Van Huffel Catalog L-56, "Where Ideas Take Shape".
4Veloduct® Cirkulärt kanalsystem, Produktkatalog 1997, ABB Ventilation Products AB Division Veloduct pamphlet.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7523964Mar 24, 2005Apr 28, 2009Langdon IncorporatedSealing gasket for ventilation duct system
Classifications
U.S. ClassificationD23/269