Land vehicles – Wheeled – Running gear
Reexamination Certificate
2000-08-02
2002-11-12
Culbreth, Eric (Department: 3618)
Land vehicles
Wheeled
Running gear
C280S124170, C280S124175, C280S124172, C280S676000, C280S687000, C267S219000, C267S229000
Reexamination Certificate
active
06478321
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
Not Applicable
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable
BACKGROUND OF THE INVENTION
The present invention relates to a rubber shear spring assembly for a tandem axle trailer.
By way of background, in tandem axle trailers, of the type known as fifth wheels, the inner ends of leaf springs are coupled to each other by mechanical linkages. However, these mechanical linkages permit only limited vertical movement of the inner ends of the leaf springs.
BRIEF SUMMARY OF THE INVENTION
It is one object of the present invention to provide a rubber shear spring assembly for mounting the inner ends of leaf springs of a tandem axle trailer so as to permit greater vertical movement of the inner ends of the leaf springs to thereby provide a softer ride than previously obtainable by the mechanical linkages. Other objects and attendant advantages of the present invention will readily be perceived hereafter.
The present invention relates to a tandem axle trailer having a frame, first and second axles extending crosswise to said frame, first leaf springs mounted on opposite ends of said first axle, second leaf springs mounted on opposite ends of said second axle, inner and outer ends on said first and second leaf springs, and brackets mounting said outer ends of said first and second leaf springs on said frame, the improvement comprising first and second hangers mounted on said frame between said inner ends of said first and second leaf springs, first and second rubber shear springs mounted on said first and second hangers, respectively, said inner ends of one of said first and second leaf springs being coupled to said first shear spring, and said inner ends of the other of said first and second leaf springs being coupled to said second rubber shear spring.
The present invention also relates to a rubber shear spring assembly for mounting between adjacent leaf springs of tandem axles comprising a hanger, hanger sides on said hanger, a central plate between said hanger sides, first and second rubber shear springs, first sides on said first and second rubber shear springs secured to said central plate, second sides on said first and second rubber shear springs secured to said hanger sides, and first and second connector members on said central plate.
The various aspects of the present invention will be more readily understood when the following portions of the specification are read in conjunction with the accompanying drawings wherein:
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MOR/ryde International, Inc.; MOR/ryde “RL” Suspension Kit, undated, 1 sheet (2 sides).
Culbreth Eric
Draper Deanna
Gastel Joseph P.
MOR/ryde International, Inc.
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