Circular sleeve coupling

- Lindab AB
Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
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.

Referenced Cited
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
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 15, 1977 Stancati
4050703 September 27, 1977 Tuvesson et al.
4288111 September 8, 1981 Feutz
Foreign Patent Documents
363743 August 1981 ATX
13987 July 1973 SEX
19819 June 1975 SEX
17788 December 1975 SEX
382675 February 1976 SEX
25473 March 1979 SEX
25610 August 1979 SEX
26995 November 1979 SEX
26059 November 1979 SEX
840944 September 1984 SEX
880780 March 1988 SEX
1403744 March 1975 GBX
1429220 August 1976 GBX
21490040 June 1985 GBX
Other references
  • Pipes by Solpast 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", issued 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 "Ventiltion -88", issued by Lindab AB in 1988. General drawings No. J299102, produced by the Swedish company Flakt and dated Nov. 19, 1981 (811119). Catalogue entitled "Kanalsystem VELODUCT", issued by Flatk in 1982. CurveCutting Machine Delta 2 issued by Emil Suter 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 pp., first distributed in 1987. Product Catalog entiled "Circular Duct System," issued by Lindab AB, 45 Caswell Road, Brackmills Business Park, Northampton NN4 OPW, England, 42 pp. 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 pp., Jun. 1991. Product literature entitled "SPIRO Bend Segment Cutting Machine I" issued by Spiro Investment AG, Industriestrasse, CH-3178 Boesingen, Switzerland, 2 pp., first distributed c. 1978. Product literature entitled "SPIRO Bend Segment Cutting Machine II" issued by SPIRO Investment AG, Industriestrasse, CH-3178 Boesingen, Switzerland, 6 pp., first disributed c. 1980. German-language Product literature entitled "Kurven-schneidemaschine delta 2," issued by SUTER AG SEON, 5703 Seon/Schweiz, Switzerland, 6 pp., first distributed c. 1982. Product literature entitled "Seam Forming and Locking Machine beta 2," issued by SUTER AG SEON, 5703 Seon/Schweiz, Switzerland, 4 pp., first distributed c. 1982.
Patent History
Patent number: D383195
Type: Grant
Filed: Apr 9, 1993
Date of Patent: Sep 2, 1997
Assignee: Lindab AB (Bastad)
Inventors: Carl-Gustaf Sonden (Angelholm), Kenneth Lennartsson (Torekov)
Primary Examiner: Louis S. Zarfas
Assistant Examiner: Eric Waterson
Law Firm: Weingarten, Schurgin, Gagnebin & Hayes LLP
Application Number: 0/6,947
Classifications
Current U.S. Class: Coupling Or Joint (D23/262)
International Classification: 0808;