Land vehicles – Wheeled – Extensible
Reexamination Certificate
2008-09-23
2008-09-23
Ellis, Christopher (Department: 3618)
Land vehicles
Wheeled
Extensible
C280S641000, C280S038000, C280S043170, C280S651000, C414S495000, C414S723000, C414S705000, C414S530000, C414S533000, C414S785000, C414S685000
Reexamination Certificate
active
11737582
ABSTRACT:
A steering device for decreasing a turning radius of a pallet jack includes a ground engaging member connected to a support member of the pallet jack between a main wheel and an extensible wheel. The load supporting member of the pallet jack is positionable between a raised position and a lowered position. A first turning radius of the pallet jack is defined by the distance between the main wheel and the extensible wheel. While the extensible wheel engages the ground when the support frame is positioned towards the raised position, positioning the support member towards the lowered position engages the ground engageable member with the ground causing the extensible wheel to disengage the ground. The main wheel and the ground engageable member then define a second turning radius which is less than the first turning radius.
REFERENCES:
patent: 575390 (1897-01-01), Burnett
patent: 2178647 (1939-11-01), Raymond et al.
patent: 2361544 (1944-10-01), Hastings, Jr.
patent: 2417394 (1947-03-01), Framhein
patent: 2550548 (1951-04-01), Framhein
patent: 2598151 (1952-05-01), Warshaw
patent: 2623756 (1952-12-01), Elliott et al.
patent: 2727752 (1955-12-01), Gold
patent: 2734752 (1956-02-01), Boylan et al.
patent: 3260534 (1966-07-01), Knights
patent: 3372769 (1968-03-01), Jung et al.
patent: 3421775 (1969-01-01), Dugelay
patent: 4589669 (1986-05-01), Kedem
patent: 5354080 (1994-10-01), Jones
patent: 5403024 (1995-04-01), Frketic
patent: 5516128 (1996-05-01), Nakade et al.
patent: 6343907 (2002-02-01), Schalmath
patent: D464785 (2002-10-01), Gallagher
patent: 6742790 (2004-06-01), Seagraves et al.
patent: 7165776 (2007-01-01), Quinlan et al.
Non-Final Office Action of related U.S. Appl. No. 11/929,299 mailed on May 14, 2008.
Non-Final Office Action of parent U.S. Appl. No. 11/012,431, filed Mar. 2, 2007.
Aaseby Allen C.
Hartmann Fred O.
DuFault Dustin R.
DuFault Law Firm, P.C.
Ellis Christopher
Grand Steer Inc.
Olszewski John R
LandOfFree
Steering device for pallet truck does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steering device for pallet truck, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steering device for pallet truck will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3905806