Pre-tensioned spring track tensioning system

Details Pre-tensioned spring track tensioning system Pre-tensioned spring track tensioning system

2007-06-12

2007-06-12

Stormer, Russell D. (Department: 3617)

Wheel substitutes for land vehicles

With means for tensioning track by moving at least one endwheel

Biased by spring only

C305S152000, C267S289000, C267S291000

Reexamination Certificate

active

10816490

ABSTRACT:
A pretensioned spring track tensioning system provides a two stage loading of a tension roller on the interior of a vehicle drive track. The two stage loading first loads the track under a lower tension load for normal operation, but when the track is highly loaded, such as when digging, or when debris is forced between the track member and its drive sprocket or guide rollers, the compression of the lighter spring will be stopped mechanically and a second heavier compression spring will provide the tension loading. The additional spring tension under unusual conditions prevents detracking of the track and buckling of the track. A lighter tension load during normal operations reduces the loads on bearings, particularly in relation to a drive motor. The tensioning system has particular adaptability to “high” drive type tracks which have a drive sprocket elevated above the tension roller.

REFERENCES:
patent: 2054533 (1936-09-01), Baker et al.
patent: 2506619 (1950-05-01), Schwartz
patent: 2683064 (1954-07-01), Land
patent: 2707522 (1955-05-01), Sibley
patent: 2717813 (1955-09-01), Gardner
patent: 3082043 (1963-03-01), Orton
patent: 3332725 (1967-07-01), Reinsma
patent: 3744857 (1973-07-01), Schoonover
patent: 3829172 (1974-08-01), Oestmann et al.
patent: 3915509 (1975-10-01), Bell et al.
patent: 3915510 (1975-10-01), Alexander
patent: 3920286 (1975-11-01), Bell
patent: 3944196 (1976-03-01), Schwartzkopf
patent: 4413862 (1983-11-01), Ragon
patent: 4874052 (1989-10-01), Purcell et al.
patent: 4881786 (1989-11-01), Tonsor
patent: 5511868 (1996-04-01), Eftefield
patent: 5725204 (1998-03-01), Yoshida
patent: 6305762 (2001-10-01), Oertley
patent: 6322171 (2001-11-01), Fornes
patent: 55 156773 (1981-02-01), None
patent: 2001 180542 (2001-05-01), None
patent: 02001180542 (2001-07-01), None
Copy of European International Search Report from PCT/US2005/009914.
Copy of Written Opinion from PCT/US2005/009914.

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