Pivot knob portion of a welding helmet

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

FIG. 1 is a perspective view, showing the new design for a pivot knob portion of a welding helmet;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view, the right side view being a mirror image thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The details shown in broken lines form no part of the claimed design. The surface shading is provided to illustrate contour only.

Claims

The ornamental design for a pivot knob portion of a welding helmet, as shown and described.

Referenced Cited
U.S. Patent Documents
2337995 December 1943 Harper
4907300 March 13, 1990 Dampney et al.
5003632 April 2, 1991 Claude
5571217 November 5, 1996 Del Bon et al.
D398421 September 15, 1998 Crafoord et al.
6154881 December 5, 2000 Lee
6260197 July 17, 2001 Hoogewind
6341382 January 29, 2002 Ryvin et al.
6614409 September 2, 2003 Bae
D517745 March 21, 2006 Lee et al.
D524992 July 11, 2006 Belin et al.
D525395 July 18, 2006 Fridholm et al.
D526097 August 1, 2006 Lilenthal et al.
D532560 November 21, 2006 Fredriksson et al.
D532939 November 28, 2006 Juhlin et al.
D533313 December 5, 2006 Mases et al.
D551961 October 2, 2007 Huh
D557128 December 11, 2007 Sawdon et al.
20060080761 April 20, 2006 Huh
20070245467 October 25, 2007 Lilenthal et al.
20080060102 March 13, 2008 Matthews et al.
Patent History
Patent number: D589654
Type: Grant
Filed: Nov 15, 2007
Date of Patent: Mar 31, 2009
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventor: Oskar E. Juhlin (Gustavsberg)
Primary Examiner: Ruth McInroy
Attorney: Anna A. Wetzels
Application Number: 29/297,644
Classifications
Current U.S. Class: Element Or Attachment (D29/122)