Double helix ladder

- Game Time, Inc.
Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a perspective view of the ladder of the subject invention;

FIG. 2 is a side plan view of the ladder of the subject invention, the opposite side being a mirror image thereof;

FIG. 3 is a top plan view of the ladder of the subject invention; and,

FIG. 4 is a bottom plan view of the ladder of the subject invention.

Referenced Cited
U.S. Patent Documents
506238 October 1893 Kirker
1511139 October 1924 Roziger
3083015 March 1963 Barenholtz et al.
3556522 January 1971 Gale
4497484 February 5, 1985 West
Other references
  • Mexico Forge Co., pp. 14 and 15; tree climber and mini tree climber, Jun. 1984. Burke playground equipment; p. 10; Spiral ladder, left side of page, Jul. 1995. GameTime, Inc. Catalog, Cover & pp.5,31 & 52 (1991).
Patent History
Patent number: D386237
Type: Grant
Filed: Aug 28, 1995
Date of Patent: Nov 11, 1997
Assignee: Game Time, Inc. (Ft. Payne, AL)
Inventors: Kert E. Artwick (Fort Payne, AL), Gary Max (Everett, WA), Wesley D. Sutton (Fort Payne, AL), Thomas Norquist (Ft. Payne, AL), Hollis Gentry (Rainsville, AL)
Primary Examiner: Ted Shooman
Assistant Examiner: Mitchell I. Siegel
Law Firm: Welsh & Katz, Ltd.
Application Number: 0/43,162
Classifications
Current U.S. Class: D21/240; D21/244
International Classification: 2103;