|Publication number||USD454949 S1|
|Application number||US 29/135,759|
|Publication date||Mar 26, 2002|
|Filing date||Jan 17, 2001|
|Priority date||Jan 17, 2001|
|Publication number||135759, 29135759, US D454949 S1, US D454949S1, US-S1-D454949, USD454949 S1, USD454949S1|
|Inventors||Lars-Åke Mattsson, Kenneth Lennartsson, Sten Högman, Carl-Gustaf Sondén|
|Original Assignee||Lindab Ab|
|Export Citation||BiBTeX, EndNote, RefMan|
|Non-Patent Citations (4), Referenced by (2), Classifications (1) |
|External Links: USPTO, USPTO Assignment, Espacenet|
Coupling ring for ventilation ducts
US D454949 S1
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 three-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.
|1||AccuFlange: Round & Oval Duct Connection System, Accu Duct Mfg., product brochure, 1998, pp. 1-32.|
|2||Introduction to the Rectangular Duct Construction Schedules, HVAC Duct Construction Standards Metal and Flexible—2nd ed., SMAGNA Section 1.8 ff., pp. 1.12-1.43.|
|3||LindabRekt, Instruction manual, Lindab Nord AB, May 20, 1998, pp. 1-4.|
|4||Rektangulara kanalsystem, Lindab Rekt, product brochure 2000, pp. 1-8.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7140960||Apr 19, 2004||Nov 28, 2006||Applied Applications International, Inc.||Boot hanger mounting bracket|
|US7645189||Nov 27, 2006||Jan 12, 2010||Applied Applications International, Inc.||Boot hanger mounting bracket|