Patent
   D456072
Priority
Jan 17 2001
Filed
Jan 17 2001
Issued
Apr 23 2002
Expiry
Apr 23 2016
Assg.orig
Entity
unknown
37
4
n/a
The ornamental design for a coupling ring for ventilation ducts, as shown.

FIG. 1 is a front perspective view of an oval coupling ring of the new design.

FIG. 2 is a rear perspective view of the coupling ring of the new design with a rear double-lip element.

FIG. 3 is a rear view of the coupling ring.

FIG. 4 is a side view of the coupling ring.

FIG. 5 is a front view of the coupling ring.

FIG. 6 is an end view of the coupling ring; and,

FIG. 7 is a cross-section of the coupling ring at a central straight portion of the same, showing said rear element, section line VII--VII in FIG. 5.

Lennartsson, Kenneth, Mattsson, Lars-Åke, Högman, Sten, Sondén, Carl-Gustaf

Patent Priority Assignee Title
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D516697, May 14 2004 Air Distribution Technologies IP, LLC Duct end portion
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D521632, Mar 20 2001 Air Distribution Technologies IP, LLC Duct with a crimped end
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D523131, Mar 20 2001 Air Distribution Technologies IP, LLC Duct with an indented end
D524436, Mar 20 2001 Air Distribution Technologies IP, LLC Duct with a crimped end
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D646396, Dec 19 2008 Panasonic Electric Works Co., Ltd. Light irradiation facial apparatus
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D741456, Jul 17 2013 Charlotte Pipe and Foundry Company Crimp-style coupling device for clamping together cast iron pipes, fittings and the like
D755356, Jan 29 2015 VAZTEC ENGINE VENTURE, LLC Seal
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D836513, Feb 08 2017 GE GLOBAL SOURCING LLC Ribbed convolution muffler
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Patent Priority Assignee Title
5129690, Jun 10 1988 INTEGRA BANK Apparatus for connecting the ends of a pair of oval duct sections
5983496, Mar 15 1996 J.A. Hermanson Circular and oval flanged rings for connecting ducting and method of making
231356,
GB2311031,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Jan 17 2001Lindab AB(assignment on the face of the patent)
Jan 17 2001MATTSSON, LARS-AKELindab ABASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0114800345 pdf
Jan 17 2001LENNARTSSON, KENNETHLindab ABASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0114800345 pdf
Jan 17 2001HOGMAN, STENLindab ABASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0114800345 pdf
Jan 17 2001SONDEN, CARL-GUSTAFLindab ABASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0114800345 pdf
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