Wheel substitutes for land vehicles – With means for tensioning track by moving at least one endwheel – Having hydraulic adjusting means
Reexamination Certificate
2007-11-20
2007-11-20
Stormer, Russell D. (Department: 3617)
Wheel substitutes for land vehicles
With means for tensioning track by moving at least one endwheel
Having hydraulic adjusting means
C305S143000, C305S155000
Reexamination Certificate
active
11120356
ABSTRACT:
A track frame or undercarriage is made to support a rubber track on suitable guide rollers. A tensioning roller is provided as one of the guide rollers on the interior of the track and is mounted on a pivoting bracket. The pivoting bracket moves the tensioning roller to a working position for creating tension in the track. An actuator provides a known force on the pivoting bracket to move the tensioning roller to its working position, using a controlled pressure applied to the actuator. Drive sprockets for the track are mounted onto a drive case that is mounted to the frame through pivoting linkages such that the drive case and the drive sprocket can be held in a working position and retracted away from the track. The position of the tensioning roller is maintained within set limits of retractions during use, by providing a stop to limit the amount that the tensioning roller can retract.
REFERENCES:
patent: 2827337 (1958-03-01), Buffum
patent: 2843431 (1958-07-01), Beaufort
patent: 3549213 (1970-12-01), Smith et al.
patent: 3664449 (1972-05-01), Vardell
patent: 4227748 (1980-10-01), Meisel, Jr.
patent: 4840437 (1989-06-01), Henry et al.
patent: 5273126 (1993-12-01), Reed et al.
patent: 5927412 (1999-07-01), Crabb
patent: 6062327 (2000-05-01), Ketting et al.
patent: 6408965 (2002-06-01), Grant
patent: 6869153 (2005-03-01), Wright et al.
patent: 2004/0045747 (2004-03-01), Albright et al.
patent: 23 58 386 (1973-11-01), None
patent: 25 38 488 (1975-08-01), None
patent: 0 332 869 (1989-09-01), None
patent: 52140131 (1977-11-01), None
patent: 04019285 (1992-01-01), None
patent: 09099873 (1995-10-01), None
patent: 10218046 (1998-08-01), None
patent: 1066876 (1980-06-01), None
European International Search Report.
Written Opinion.
Albright Larry E.
Frederick Dan
Koch Rodney
Wehseler Andrew A.
Clark Equipment Company
Kotter Kip
Michael & Best & Friedrich LLP
Stormer Russell D.
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