Pipelayer

Skip to: Description  ·  Claims  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 illustrates a perspective view of the pipelayer showing my new design, wherein a longitudinal axis of the main assembly is perpendicular to a longitudinal axis of the undercarriage.

FIG. 2 illustrates another perspective view of the pipelayer, wherein the longitudinal axis of the main assembly is parallel to a longitudinal axis of the undercarriage.

FIG. 3 illustrates another perspective view of the pipelayer, wherein the longitudinal axis of the main assembly is parallel to a longitudinal axis of the undercarriage.

FIG. 4 illustrates an orthogonal view of the pipelayer, wherein the longitudinal axis of the main assembly is perpendicular to a longitudinal axis of the undercarriage; and,

FIG. 5 illustrates another orthogonal view of the pipelayer, wherein the longitudinal axis of the main assembly is parallel to a longitudinal axis of the undercarriage.

Claims

The ornamental design for a pipelayer, as shown and described.

Referenced Cited
U.S. Patent Documents
1931221 October 1933 Cummings et al.
2681231 June 1954 Kondracki
2722320 November 1955 Dobeus et al.
3058600 October 1962 Leake et al.
3265218 August 1966 Stefanutti
D208693 September 1967 Prime
D209137 November 1967 Highberger et al.
3792781 February 1974 Blase et al.
3842983 October 1974 Dolza
3869814 March 1975 Rannev et al.
4042116 August 16, 1977 Bertolino
4083459 April 11, 1978 Allen
4132317 January 2, 1979 Arendt et al.
D252231 June 26, 1979 Asano
D263051 February 16, 1982 Allen et al.
4362435 December 7, 1982 Henry
4666049 May 19, 1987 Gilmore, Jr.
4946051 August 7, 1990 Cliff
4966290 October 30, 1990 Ejchler et al.
5353940 October 11, 1994 Pech et al.
5392936 February 28, 1995 Solomon et al.
6003252 December 21, 1999 Davis
D425577 May 23, 2000 Bao
D437602 February 13, 2001 Hiraoka et al.
D462974 September 17, 2002 Yanagida et al.
D463455 September 24, 2002 Yanagida et al.
6609622 August 26, 2003 Forsyth
6843619 January 18, 2005 Gelmi
6893189 May 17, 2005 Matsushita et al.
D518071 March 28, 2006 Gwak et al.
20030168421 September 11, 2003 Davis
20040033109 February 19, 2004 Gelmi
20040190995 September 30, 2004 Matsushita et al.
Foreign Patent Documents
WO 99/24348 May 1999 WO
WO 2004/080881 September 2004 WO
Other references
  • PCT International Search Report of the International Searching Authority, Jun. 20, 2003, International Application No. PCT/US03/07615.
  • PCT International Search Report and Written Opinion of the International Searching Authority, Feb. 26, 2007, International Application No. PCT/US05/16278.
  • “Revolutionary Pipelayer Introduced by DavCrane,” Underground Construction, Sep. 2003, www.undergroundconstructiononline.com, pp. 29-31.
Patent History
Patent number: D567259
Type: Grant
Filed: May 15, 2007
Date of Patent: Apr 22, 2008
Inventor: Daniel E. Davis (San Benito, TX)
Primary Examiner: Mitchell Siegel
Assistant Examiner: Mark Goodwin
Attorney: Patterson & Sheridan, L.L.P.
Application Number: 29/280,036
Classifications
Current U.S. Class: Endless Track (D15/24)