Circular sleeve coupling

Description

FIG. 1 is a perspective view of a circular sleeve coupling, showing our new design, as seen obliquely from the front;

FIG. 2 is a perspective view of the sleeve coupling, as seen obliquely from the back; and,

FIG. 3 is a side elevation of the sleeve coupling, the opposite side being a mirror image thereto.

Claims

The ornamental design for a circular sleeve coupling, as shown and described.

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Inventors:	Sonden; Carl-Gustaf (Angelholm, SE), Lennartsson; Kenneth (Torekov, SE)
Assignee:	Lindab AB (Bastad, SE)
Appl. No.:	D/006,936
Filed:	April 9, 1993

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Foreign Application Priority Data

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Mar 1, 1993 [DK]			0216/93

Current U.S. Class:	D23/262
Field of Search:	;D23/262,263,264,265 ;285/424 ;138/109 ;277/27A ;16/2,108,109

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References Cited [Referenced By]

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U.S. Patent Documents

193847	August 1877	Choate
210367	November 1878	Stern et al.
244720	July 1881	Hildebrand
409631	August 1889	Cooper
735644	September 1903	Wirtz
904199	November 1908	Harris
910119	January 1909	Dunn
997072	July 1911	Mares
1083002	December 1913	Charles
2392220	January 1946	Bruhn et al.
2482558	September 1949	Scaringella
2535186	December 1950	Anderson
2823703	February 1958	Nusser, Jr.
3111922	November 1963	Hock
3290066	December 1966	Primich et al.
3327945	June 1967	Pfister
3368830	February 1968	French
4007941	February 1977	Stancati
4050703	September 1977	Tuvesson et al.
4288111	September 1981	Feutz

Foreign Patent Documents

	363743		Aug 1981		AT
	13987		Jul 1973		SE
	19819		Jun 1975		SE
	17788		Dec 1975		SE
	382675		Feb 1976		SE
	25473		Mar 1979		SE
	25610		Aug 1979		SE
	26059		Nov 1979		SE
	26995		Nov 1979		SE
	840944		Sep 1984		SE
	880780		Mar 1988		SE
	317678		Aug 1929		GB
	442751		Feb 1936		GB
	1403744		Mar 1975		GB
	1429220		Aug 1976		GB
	2149040		Jun 1985		GB

Other References

Pipes by Solplast AB disclosed in a catalogue entitled "Svensk Byggkatalog Arp-87", issued by Svensk Byggtajanst in 1987. . Product NPU disclosed in a catalogue entitled "Ventilation-88", issed by Lindab AB in 1988. . Product ESIU disclosed in a catalogue entitled "Ventilation-88", issued by Lindab AB in 1988. . Product IK disclosed in a catalogue entitled "Ventilation-88", issued by Lindab AB in 1988. . General drawings No. J299102, producted by the Swedish company Flakt and dated Nov. 19, 1981 (811119). . Catalogue entitled "Kanalsystem VELODUCT", issued by Flakt in 1982. . Curve Cutting Machine Delta 2 issued by Emil Ster Maschinenfabrik AG, CH-5703 Seon/Schweiz (English translation). . Product Catalog entitled "Ducts and Fittings," issued by Lindab AB, Caswell Road, Brackmills Industrial Estate, Northampton NN4 OBR, England, 52 pages, first distributed in 1987. . Product Catalog entitled "Circular Duct System," issued by Lindab AB, 45 Caswell Road, Brackmills Buiness Park, Northampton NH4 OPW, England, 42 pages, Mar. 1992. . Swedish-language Product Catalog entitled "VELODUCT Cirkulart kanalsystem," issued by Flakt VELODUCT AB, Prastg.ang.rdsvagen 15, Box 84, 153 00 Jarna, Sweden, 29 pages, Jun. 1991. . Product literature entitled "SPIRO Bend Segment Cutting Machine I" issued by Spiro Investment AG, Industriestrasse, CH-3178 Boesingen, Switzerland, 2 pages, first distributed c. 1978. . Product literature entitled "SPIRO Bend Segment Cutting Machine II" issued by SPIRO Investment AG, Industriestrasse, CH-3178 Boesingern, Switzerland, 6 pages, first distributed c. 1980. . German-language Product literature entitled "Kurven-schneidemaschine delta 2," issued by SUTER AG SEON, 5703 Seon/Schweiz, Switzerland, 6 pages, first distributed c. 1982. . Product literature entitled "Seam Forming and Locking Machine beta 2," issued by SUTER AG SEON, 5703 Seon/Schweiz, Switzerland, 4 pages, first distributed c. 1982..

Primary Examiner: Reid; Stella
Assistant Examiner: Watterson; Eric
Attorney, Agent or Firm: Weingarten, Schurgin, Gagnebin & Hayes