Chair control

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Description

FIG. 1 is a side elevational view of a chair control, showing my new design;

FIG. 2 is a top perspective view, on an enlarged scale;

FIG. 3 is bottom perspective view, on an enlarged scale;

FIG. 4 is a top plan view, on an enlarged scale;

FIG. 5 is an elevational view showing the side not shown in FIG. 1, on an enlarged scale;

FIG. 6 is a front elevational view, on an enlarged scale;

FIG. 7 is a rear elevational view, on an enlarged scale; and

FIG. 8 is a bottom plan view, on an enlarged scale.

The broken lines are for illustrative purposes only.

Referenced Cited
U.S. Patent Documents
2818911 January 1958 Syak
3480249 November 1969 Lie
3627252 December 1971 Yamaguchi
4533177 August 6, 1985 Latone
4555085 November 26, 1985 Bauer et al.
4707029 November 17, 1987 Korn
4711491 December 8, 1987 Ginat
4758045 July 19, 1988 Edel et al.
4796950 January 10, 1989 Mrotz, III et al.
Other references
  • Interiors, May 1984, p. 19, Herman Miller, Chair. Sketch of Herman Miller, Knee-Action Chair Control Mechanism. Brochure excerpt of "Equa" chair by Herman Miller. "Buhk 100" Chair from Contract, 1987, p. 124. "Catalyst" Chair of Haworth, from Interiors, May 1987, p. 128 and unnumbered page containing photograph of Chair. "Model 788" Chair Mechanism of Collier-Keyworth Company, from brochure excerpt.
Patent History
Patent number: D318588
Type: Grant
Filed: Jun 24, 1988
Date of Patent: Jul 30, 1991
Assignee: Leggett & Platt, Incorporated (Carthage, MO)
Inventor: Earl H. Koepke (Sturgis, MI)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: Janice E. Seeger
Law Firm: Wood, Herron & Evans
Application Number: 7/211,407
Classifications
Current U.S. Class: D/6500; D/6366