Sealing rings for ventilation ducts

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.

Claims

The ornamental design for sealing rings for ventilation ducts, as shown.

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Inventors:	Mattsson; Lars-Ake (Bastad, SE), Andersson; Pontus (Angelholm, SE), Lennartsson; Kenneth (Torekov, SE), Persson; Tomas (Munka Ljungby, SE)
Assignee:	Lindab AB (Bastad, SE)
Appl. No.:	D/104,424
Filed:	May 5, 1999

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Foreign Application Priority Data

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Nov 6, 1998 [SE]			98-2181
Nov 6, 1998 [SE]			98-2182

Current U.S. Class:	D23/269
Current International Class:	2301
Field of Search:	;D23/269,259 ;29/148,446 ;277/165,27A,DIG.23,227 ;267/182 ;285/231

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References Cited [Referenced By]

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U.S. Patent Documents

D285247	August 1986	Jornhagen
D342567	December 1993	Boen
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Foreign Patent Documents

	2840962		Apr 1979		DE
	150025B		Nov 1986		DK
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	0 092881 A2		Apr 1983		EP
	0 092 881 A2		Nov 1983		EP
	0 273 221 B1		Dec 1987		EP
	0 389 462 A1		Mar 1990		EP
	0 758 066 A1		Feb 1997		EP
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Other References

Veloduct.RTM. Cirkulart kanalsystem, Produktkatalog 1997, ABB Ventilation Products AB Division Veloduct pamphlet. . "Sistema Di Tnenuta Ring", issued by Climovent Ssytem, an Italian Company no date. . "Veloduct" catalog 1977, ABB Ventilation Products AB, Division Veloduct. . Van Huffel Catalog L-56, "Where Ideas Take Shape"..

Primary Examiner: Zarfas; Louis S.
Assistant Examiner: Delehanty; Robert A.
Attorney, Agent or Firm: Weingarten, Schurgin, Gagnebin & Hayes LLP