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Sealing rings for ventilation ducts |
| D447223 |
Sealing rings for ventilation ducts
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| Patent Drawings: | |
| Inventor: |
Mattsson, et al. |
| Date Issued: |
August 28, 2001 |
| Application: |
D/104,424 |
| Filed: |
May 5, 1999 |
| Inventors: |
Andersson; Pontus (Angelholm, SE)
Lennartsson; Kenneth (Torekov, SE)
Mattsson; Lars-Ake (Bastad, SE)
Persson; Tomas (Munka Ljungby, SE)
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| Assignee: |
Lindab AB (Bastad, SE) |
| Primary Examiner: |
Zarfas; Louis S. |
| Assistant Examiner: |
Delehanty; Robert A. |
| Attorney Or Agent: |
Weingarten, Schurgin, Gagnebin & Hayes LLP |
| U.S. Class: |
D23/269 |
| Field Of Search: |
D23/269; D23/259; 29/148; 29/446; 277/165; 277/27A; 277/DIG.23; 277/227; 267/182; 285/231 |
| International Class: |
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| U.S Patent Documents: |
D285247; D342567; D347885; D351459; D362902; D371189; D379493; D380039; 904199; 1306476; 2314386; 2469516; 2533742; 2547185; 2777715; 3015510; 3174761; 3544119; 3768819; 3955834; 4050703; 4193426; 4216981; 4369159; 4579354; 4664421; 4666165; 4998740; 5002290; 5007202; 5407122; 5531460 |
| Foreign Patent Documents: |
2840962; 150025B; 150025 B; 0 092881 A2; 0 092 881 A2; 0 273 221 B1; 0 389 462 A1; 0 758 066 A1; 201.015.241; 2.015.241; 317678; 442.751; 01285018; 174861; 174861 b; 7415594-6; 58/77; 77-0067; 77-0068; 54 563; 54 562; 54 561; WO 94/15133; DM/026 504 |
| 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".. |
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| Abstract: |
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| Claim: |
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.
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