Patent ID: 7270211

Claim:
A motorcycle lift cylinder device adapted to a pair of front forks of a motorcycle having an inner fork tube, an outer fork tube, a damper rod with a damper rod head, a fork spring, and a fork cap, with said fork spring compressed between said damper rod head and said fork cap, said motorcycle lift cylinder device comprising: a control button connected from a 12 volt DC battery on said motorcycle, said control button connecting to a first relay and a second relay; an air compressor activated by said first relay providing compressed air to an air tank; an air gauge with an air pressure switch monitoring said air pressure within said air tank; a first control switch operated by said first relay controlling air flow from said air tank through a check valve to a second control switch operated by said second relay, further directing air flow to a solenoid valve, controlled by said second relay, said solenoid valve releasing said compressed air through air lines to a pair of air cylinders located within said front forks of said motorcycle, said fork caps of each front fork modified to include an air inlet connector allowing for passage of air from said air lines between said solenoid valve and said air cylinders within said front forks of said motorcycle, wherein compressed air is delivered to said air cylinders as said control button is first depressed, extending said air cylinders causing said front forks to be extended raising the height of said motorcycle after which said compressed air is released from said air cylinders by depressing said control button, allowing said air cylinders to be compressed by the weight of said motorcycle, lowering the height of said motorcycle, wherein said control button is a double pole, double throw switch which, when once depressed, sends a signal through said first relay to said air compressor to generate compressed air to said air tank, said compressed air released from said air tank by said first control switch through said check valve to said second control switch, which then directs said compressed air to said solenoid valve, further directing said compressed air through said air lines to said air cylinders, forcing piston heads within said air cylinders against said fork springs, raising the height of said motorcycle, causing a green light to be illuminated near said control button, after which depressing said control button again causes air to be released from said air cylinders to said solenoid valve, as said second control switch directs the released air to an exhaust in said solenoid valve, allowing the weight of said motorcycle to retract said piston heads in said air cylinders, releasing pressure on said fork springs lowering the height of said motorcycle, causing a red light to be illuminated near said control button.