Land vehicles – Wheeled – Convertible
Reexamination Certificate
2006-08-22
2006-08-22
Phan, Hau (Department: 3618)
Land vehicles
Wheeled
Convertible
C280S047280, C182S020000, C182S082000
Reexamination Certificate
active
07093840
ABSTRACT:
A multi-purpose combined ladder/cart assembly capable of being converted into a plurality of ladder and cart configurations, including an extension ladder, a step ladder, a load-carrying cart, a pull cart, and a hand truck. The multi-purpose combined ladder/cart assembly includes a plurality of frame members that are pivotal with respect to each other and capable of being retained in variety of desired positions in order to easily configure the assembly in any of its various configurations. The travel characteristics and center of gravity of the cart configurations of the assembly are variably selectable, depending upon the load to be carried, by simply selecting various combinations of differently sized wheels to attach to the assembly.
REFERENCES:
patent: 119339 (1871-09-01), Evans
patent: 584150 (1897-06-01), Bowman
patent: 867754 (1907-10-01), Randall
patent: 1423366 (1922-07-01), Snook
patent: 2519113 (1950-08-01), Cohn
patent: 3282375 (1966-11-01), Ray
patent: 3430972 (1969-03-01), Fiedler
patent: 3556248 (1971-01-01), Brown
patent: 3954155 (1976-05-01), Guidara
patent: 4045040 (1977-08-01), Fails
patent: D249032 (1978-08-01), Tarran
patent: 4106590 (1978-08-01), Tarran
patent: 4253546 (1981-03-01), Uchida
patent: 4258826 (1981-03-01), Murray
patent: 4448282 (1984-05-01), Glezendanner
patent: 4494626 (1985-01-01), Ast
patent: 4934485 (1990-06-01), Purkapile
patent: 5064020 (1991-11-01), Eagleson
patent: 5242030 (1993-09-01), Lobozzo
patent: 5314042 (1994-05-01), Adams
patent: 5433291 (1995-07-01), Shoestock, Sr.
patent: 5476282 (1995-12-01), Dahl
patent: 5836595 (1998-11-01), Brice
patent: 5839538 (1998-11-01), Magyar
patent: 5941543 (1999-08-01), Kazmark, Jr.
patent: 6095532 (2000-08-01), Martin
patent: 6173811 (2001-01-01), Tornabene et al.
patent: 6474663 (2002-11-01), Becker
patent: 6516918 (2003-02-01), Hess
patent: 6626453 (2003-09-01), Theus et al.
patent: 6651774 (2003-11-01), Yoo
http:www.totaltrolley.com—Total Trolley™ 4 in 1 Magic Helper—A hand truck, dolly, flatbed cart, and a step ladder all in one tough, easy to store magic helper.
Lucas Jeffrey T.
McClure Eric
Isotec, Inc.
Phan Hau
LandOfFree
Multi-purpose combined ladder/cart assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-purpose combined ladder/cart assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-purpose combined ladder/cart assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3667825