Tractor endless tread

Details Tractor endless tread Tractor endless tread

1998-10-13

2001-02-13

Stormer, Russell D. (Department: 3617)

Wheel substitutes for land vehicles

Endless belt having nonmetallic track or tread

Track formed of endless flexible belt

C305S160000, C305S170000, C305S180000

Reexamination Certificate

active

06186604

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a tractor endless tread composed of grouser-mounting base plates strung on twin endless strings, each string including a pair of side-by-side wire rope stretches filled with elastomer material and embedded in elastomer material.
2. Prior Art
A tractor endless tread having grousers strung on cables is disclosed in Fikse U.S. Pat. No. 3,063,758, issued Nov. 13, 1962, for Strung Section Flexible Band Vehicle Track. The structure of the present tread is simplified and is more durable.
The Myers U.S. Pat. No. 2,326,719, issued Aug. 10, 1943, and the Keck U.S. Pat. No. 2,392,988, issued Jan. 15, 1946 show vehicle tracks incorporating cables embedded in rubber, but the structure of these tracks is quite different from the track of the present invention.
SUMMARY OF THE INVENTION
A principal object of the invention is to provide a string of rigid grouser-mounting base plates forming an endless band which are interconnected by wire rope loops that are protected against fatigue.
A more specific object is to secure such wire rope loops to grouser-mounting base plates by elongated clamping strips which are interengaged to transmit shear stress between adjacent clamping strips.
A further object is to improve the flexibility of the wire rope loops by embedding the wire rope in elastomer material.
It is also an object to provide an endless tractor tread having rigid grouser-mounting base plates strung on a wire rope loop in a construction which will enable individual grouser-mounting base plates to be removed easily from the tread and replaced with substitute grouser-mounting base plates.
Another object is to provide flexible joints between adjacent grouser-mounting base plates of an endless band of grouser-mounting base plates forming a tractor tread.
More specifically, it is an object to provide interfitting projection and socket joints between adjacent grouser-mounting base plates.
An additional object is to provide an endless band of grouser-mounting base plates in which the grouser-mounting base plates may be of different selected lengths.
The foregoing objects can be accomplished by a tractor tread including a band of elongated grouser-mounting base plates connected together by two wire rope loops spaced apart lengthwise of the grouser-mounting base plates a distance several times as great as the width of a grouser-mounting base plate, each loop being composed of two side-by-side wire rope stretches embedded in elastomer material, which loops are secured to the grouser-mounting base plates by clamping strips engaging the wire rope loops. The adjacent edges of adjacent clamping strips have interfitting projections and sockets for transmitting shear stress between adjacent clamping strips.


REFERENCES:
patent: 2107490 (1938-02-01), Mayne
patent: 3700288 (1972-10-01), Davin et al.
patent: 4241956 (1980-12-01), Meisel, Jr.
patent: 4645274 (1987-02-01), Wohlford
patent: 5295741 (1994-03-01), Togashi et al.
patent: 5741052 (1998-04-01), Fikse
patent: 6030057 (2000-02-01), Fikse
patent: 4-342680 (1992-11-01), None
patent: 5-221345 (1993-08-01), None
patent: 1181929 (1985-09-01), None
patent: 93-22184 (1993-11-01), None

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