Combined hand truck and ladder

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Description

FIG. 1 is a perspective view of a combined hand truck and ladder, showing my new design;

FIG. 2 is a lower end elevational view thereof;

FIG. 3 is a perspective view thereof in an alternate position with the extension portions opened;

FIG. 4 is a perspective view thereof in another alternate position for use as a step ladder; and

FIG. 5 is a perspective view thereof in still another alternate position for use as a wheeled cart.

Referenced Cited
U.S. Patent Documents
D198676 July 1964 Tarran
2820643 January 1958 Cohn
2980200 April 1961 Kibby
3104889 September 1963 Branch, Jr.
3693996 September 1972 Hardy
3785669 January 1974 Doheny
3954155 May 4, 1976 Guidara
Other references
  • Modern Materials Handling, 6/56, Hand Truck, top center of page, p. 146. Modern Materials Handling, 9/60, p. 153, Hand Truck, top left side of page. Material Flow Catalog, .COPYRGT.1975, p. 14, Convertible Truck, top left side of page. Magliner Magnesium Hand Trucks Brochure, p. 2, Hand Truck, 111-U-815-FNS30, center of page.
Patent History
Patent number: D249031
Type: Grant
Filed: Mar 25, 1977
Date of Patent: Aug 22, 1978
Assignee: Lords III Research & Development Co. (Escondido, CA)
Inventor: Phil K. Tarran (San Diego County, CA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: James M. Gandy
Attorney: Carl R. Brown
Application Number: 5/781,421
Classifications
Current U.S. Class: D12/25; D12/34; Ladder (D25/64)
International Classification: D1202;