|
Specifications
Patent # 6,871,718
For a full discussion of our Patent go to US Patent office Review (Automatic Adjustable Rear Suspension for Trike).
FIELD OF THE INVENTION
This invention relates to motorized trikes, and in particular to an automatically adjustable rear suspension for trike.
BACKGROUND OF THE INVENTION
Motorcycles comprise an important part of our transportation system, and have been around for over a century. Gottlieb Daimler, a German engineer, is generally credited with inventing and building the first motorcycle in 1885. He mounted a four-stroke piston engine to a wooden bicycle frame. Following a few decades of development, the motorcycle became a reliable, useful vehicle during the early 1900's.
While today's motorcycles do not differ significantly in appearance from the early models, they do incorporate important improvements. Modern motorcycles have stronger frames, more powerful engines and more dependable brakes. Larger, softer seats make riding more comfortable, and hydraulic springs help lessen road shocks.
During recent decades, as the disposable income and affinity for comfort of motorcycle afficionados have increased, large touring motorcycles have become popular. These motorcycles provide unparalleled stability, comfort and power to their riders.
Still another motorcycle refinement which has gained recent popularity is the three-wheel conversion of large touring motorcycles. This conversion typically involves installing an automotive rear end on an existing motorcycle frame, resulting in one front wheel and two rear drive wheels. This three wheel conversion, also known as a "trike", affords its riders increased comfort and stability.
One problem associated with modern trikes is keeping the motorcycle frame at the correct angle relative to the surface upon which the trike rests. It is important to maintain the motorcycle frame at the correct angle relative to the surface upon which the trike rests in order to optimize the handling characteristics and ride comfort of the trike. This problem arises especially when drivers of different weights occupy the front seat, or when a passenger climbs into the rear seat. Although front-to-rear leveling arrangements have been taught within the art for conventional two-wheel motorcycles, Applicant is not aware of the existence of any such systems which are usable on trikes. Thus, it would be desirable to provide an automatically adjustable rear suspension for trike which maintains the motorcycle frame at the correct angle relative to the surface upon which the trike rests.
Another problem associated with currently available trikes is a phenomenon known as pushback. Pushback is the reaction of the motorcycle steering wheel (handle bars) to bumps which the rear wheels see. For example, if the left rear wheel hits a bump, then the front wheel will tend to veer right due to pushback. Conversely, if the right rear wheel hits a bump, then the front wheel will tend to veer left. Thus, it would be desirable to provide an automatically adjustable rear suspension for trike which minimizes pushback.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a an automatically adjustable rear suspension for trike which maintains the motorcycle frame at the correct angle relative to the surface upon which the trike rests. Design features allowing this object to be accomplished include a compressor pneumatically connected to an accumulator, at least one air spring pneumatically connected to the accumulator through a valve, and a valve pushrod connecting the valve to an axle. Advantages associated with the accomplishment of this object include optimization of the handling characteristics and ride comfort of the trike.
It is another object of the present invention to provide a an automatically adjustable rear suspension for trike which minimizes pushback. Design features allowing this object to be accomplished include an air spring mounted between a trike frame and an L arm associated with each rear wheel. Benefits associated with the accomplishment of this object include increased trike controllability and rider comfort.
Longer wheel base gives passenger more foot room. Contact Us.
 Rear end behind passenger for a better ride.
|