Step ladder

Description

FIG. 1 is perspective view of a first embodiment of the invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

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

FIG. 5 is a top view thereof;

FIG. 6 is a perspective view of a second embodiment of the invention;

FIG. 7 is a front view thereof;

FIG. 8 is a rear view thereof;

FIG. 9 is a left side view thereof, being the mirror of the right side view; and

FIG. 10 is a top view thereof; and,

FIG. 11 is a perspective view of a third embodiment of the present invention, the top,left, and rear being substantially consistent with the top, left, and rear of the step ladder of the first embodiment.

Claims

The ornamental design for a step ladder, as shown and described.

---

Inventors:	Bell; Randall (River Forest, IL), Herbst; Walter (Lake Forest, IL)
Assignee:	Werner Co. (Greenville, PA)
Appl. No.:	D/071,634
Filed:	June 5, 1997

---

Current U.S. Class:	D25/64; D25/65
Current International Class:	2504
Field of Search:	;D25/62,65,64 ;182/26,33,33.2

---

References Cited [Referenced By]

---

U.S. Patent Documents

D236244	August 1975	Lay
4205411	June 1980	Cupp et al.
4276955	July 1981	Hickman
4485892	December 1984	Maloney et al.
4557350	December 1985	Wang
4653713	March 1987	Hamilton
4706918	November 1987	Wilson
4730802	March 1988	Chatham et al.
4979590	December 1990	Bailey
5370263	December 1994	Brown
5421429	June 1995	Evans
5542535	August 1996	Dalton
5542553	August 1996	Penniman

Foreign Patent Documents

	2093516		Feb 1982		GB
	2192025		Dec 1987		GB

Other References

Cosco brochure, ladder model No. 11-740 "Tri Step Work Platform" (1995). . Cosco brochure, ladder model No. 11-780 "Pro Step" (1995). . Cosco brochure, "Pro Fold" ladder (1995). . Cosco brochure, ladder model No. 11-725 (1995). . Cosco brochure, ladder models 11-300 and 11-307 (1995). . Cosco brochure, ladder models 11-135 and 11-302 (1995). . U.S. Design Patent Application No. 29/048,682 filed Jan. 11, 1996..

Primary Examiner: Clark; Doris
Attorney, Agent or Firm: Howrey & Simon