Joints and connections – Articulated members – Pivoted
Reexamination Certificate
2000-08-11
2003-05-13
English, Peter C. (Department: 3616)
Joints and connections
Articulated members
Pivoted
C403S344000, C280S124100, C280S124134, C267S292000
Reexamination Certificate
active
06561718
ABSTRACT:
BACKGROUND AND SUMMARY OF THE INVENTION
The present invention relates to large vehicles having independent suspensions, such as those which are typically used in military applications and in large municipal vehicles, such as fire trucks. In particular, the invention relates to a frame and independent suspension assembly which allows a vehicle to have better stability by lowering the center of gravity, and better visibility because of the lower drivetrain and lower hoodline.
Military and other emergency vehicles must be designed to extremely demanding specifications. The vehicles must be capable of driving over or through obstacles which only a tactical or emergency driver would attempt. The vehicles must be able to endure corrosive, partially submerged and frequently dirty environments, such as standing water, chemicals or deep mud.
In addition, it is desirable for such vehicles to provide maximum forward visibility for the operator and maximum load carrying capacities. One step which has been taken in the design of heavy duty vehicles has been to utilize C-shaped channels as the main frame members. The use of two widely-spaced beams provides a space where various engine, transmission and other essential components can be mounted. Making more space available along the center line of the vehicle frame allows heavy components to be more effectively mounted at lower elevation which, in turn, lowers the vehicle's center of gravity. Vehicles with low centers of gravity have improved stability. A lower center of gravity in a vehicle provides improved resistance to overturning as the vehicle traverses rough terrain or maneuvers around obstacles at high rates of speed. The improved visibility that results from a lowering of a vehicles drive train and hoodline allows for safer operation of the vehicle. While the present invention has particular application in the context of frame members which are C-shaped, the invention may be used with frame members having other shapes, such as tubular shapes (rounded and rectangular) and other structurally advantageous shapes.
The present invention provides a mounting assembly for a rotating arm, such as a control arm of an independent suspension. The present invention provides for easy removal of a pin in the mounting assembly, which in turn allows for easy replacement of the control arm of a vehicle suspension. These and other advantages are accomplished by using a pin which passes through a cylindrical bore in one end of the arm. The pin is gripped at each end by a clamping block. Each block has a main pin-gripping opening for one end of the pin, and the opening has an initial size which allows the end of the pin to pass easily through the opening. However, when the clamping block is tightened, such as by mounting the block to a support, the opening is made smaller so as to grip the end of the pin.
Other features and advantages of the present invention will be better understood upon a reading of the following specification, read together with the accompanying drawings, wherein:
REFERENCES:
patent: 1737915 (1929-12-01), Carrillo
patent: 3554588 (1971-01-01), Reinsma et al.
patent: 3868193 (1975-02-01), Schott
patent: 4887927 (1989-12-01), Bond
patent: 5062654 (1991-11-01), Kakimoto et al.
patent: 5240280 (1993-08-01), Raidel
Anderson Brian K.
Archer David W.
Baker & McKenzie
English Peter C.
Oshkosh Truck Corporation
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