Slab on grade chair

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Description

FIG. 1 is a perspective view of the slab on grade chair of a first embodiment of the present invention;

FIG. 2 is a top plan view of the slab on grade chair of FIG. 1;

FIG. 3 is a front elevational view of the slab on grade chair of FIG. 1 with the back elevational view being identical;

FIG. 4 is a right side elevational view of the slab on grade chair of FIG. 1 with the left side elevational view being a mirror image;

FIG. 5 is a bottom plan view of the slab on grade chair of FIG. 1;

FIG. 6 is a top plan view of a slab on grade chair of a second embodiment of the present invention;

FIG. 7 is a front elevational view of the slab on grade chair of FIG. 6 with the back elevational view being identical;

FIG. 8 is a right side elevational view of the slab on grade chair of FIG. 6 with the left side elevational view being a mirror image;

FIG. 9 is a bottom plan view of the slab on grade chair of FIG. 6;

FIG. 10 is a top plan view of a slab on grade chair of a third embodiment of the present invention;

FIG. 11 is a front elevational view of the slab on grade chair of FIG. 10 with the back elevational view being identical;

FIG. 12 is a right side elevational view of the slab on grade chair of FIG. 10 with the left side elevational view being a mirror image;

FIG. 13 is a bottom plan view of the slab on grade chair of FIG. 10;

FIG. 14 is a top plan view of a slab on grade chiar of a fourth embodiment of the present invention;

FIG. 15 is a front elevational view of the slab on grade chair of FIG. 14 with the back elevational view being identical;

FIG. 16 is a right side elevational view of the slab on grade chair of FIG. 14 with the left side elevational view being a mirror image; and,

FIG. 17 is a bottom plan view of the slab on grade chair of FIG. 14.

Referenced Cited
U.S. Patent Documents
D279164 June 11, 1985 Mitchell et al.
D279352 June 25, 1985 Mitchell et al.
D334133 March 23, 1993 Hartzheim
D346703 May 10, 1994 Grosfillex
D365693 January 2, 1996 Jones
D367976 March 19, 1996 VanSkiver et al.
3255565 June 1966 Menzel
4000591 January 4, 1977 Courtois
4483119 November 20, 1984 Hernandez
4682461 July 28, 1987 Sizemore
4756641 July 12, 1988 Hartzheim
5107654 April 28, 1992 Leonardis
5555693 September 17, 1996 Sorkin
Foreign Patent Documents
227969 May 1960 AUX
1186162 April 1985 CAX
1276874 June 1972 NOX
575043 January 1946 SEX
Other references
  • Product brochure from Dura-Tech of Dayton, Ohio for Plaschair and Grade Plate Spacers. (date unknown). Product brochure from Composite General, Inc. of Irving, Texas for Intersectional Chair. Mesh Chair and High Chair. (date unknown). Product brochure from Lotel, Inc. of Baton Rouge, Louisiana for Mesh-Ups. (date unknown). Product brochure from Hedlund Manufacturing Co. of Red Oak, Texas for PC. --Snap-On Paving Chairs. (date unknown). Product brochure from WHC Products, Inc. of Houston, Texas for Stak Hi-Chair. (date unkown). Product brochure from International Plastics, Corp. of Nicholasville, Kentucky for X High Chair, X Bar Chair and Joist Chair. (1991). Product brochure from K.Y. Trading, Inc. of Los Angeles, California for Steel Spacer and Steel High Chair. (date unkown). Product brochure from Spillman of Columbus, Ohio for Plasclips, Meshclips and Plaschairs. (Apr. 1994). Product brochure from Art Mould Plastics, Ltd. of Ontario, Canada for Individual High Chairs and Individual Linden Chairs. (date unkown). Product brochure from Craig's Construction Specialties, Inc. of Denver, Colorado for Mesh Chairs and Bar Chairs. (date unkown). Product brochure from Seifert Abstandhalter of Schalksmuhle, Germany for Styrofix, Styrofix-Super and Styrofix-Extra. (date unkown). Product brochure from Technique for Clip Type Spacer Clips, Spacer Chair and Support Chair. (date unkown). Product brochure from Artikel of Wuppertal, Germany for Vierbein Spacer. (date unkown). Product brochure from Eclipse Plastics of Woodinville, Washington for Tower. (date unkown).
Patent History
Patent number: D394200
Type: Grant
Filed: May 7, 1996
Date of Patent: May 12, 1998
Inventor: G. Douglas Hartzheim (Yucaipa, CA)
Primary Examiner: Susan J. Lucas
Assistant Examiner: Cynthia E. Ramirez
Law Firm: Knobbe, Martens, Olson & Bear, LLP
Application Number: 0/54,168
Classifications
Current U.S. Class: D/8354
International Classification: 0805;