Adjustable Stiffness in Skateboards

A carbon skateboard support assembly with adjustable positions and angles for improved stability and customization. The assembly has two symmetric groups of support assemblies on the base plate. Each group has a fixed support rod and an adjustable side support. The side support has an adjustment rod with a rotating connector to connect to the support rod. This allows angled adjustment of the side support. A sliding rod with limits inside the fixed rod lets the side support slide. An electric push rod drives the sliding rod for telescopic adjustment. The rotating connector, limits, and push rod allow fine positioning and angle adjustment of the side support relative to the main support rod.

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Skateboard trucks with an inverted kingpin orientation differ from traditional trucks by mounting the kingpin into the baseplate with the threaded end facing downwards toward the deck. The baseplate features a recessed area that houses a hex nut with a long shaft, securing the kingpin. This inverted design allows for easy adjustment of truck tightness by tightening the nut, without the kingpin protruding from the bottom, reducing the risk of it catching on obstacles. The recessed nut design also prevents contact between the hard kingpin and the softer baseplate material, minimizing wear and reducing truck wobble.

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A skateboard truck with adjustable tightness enhances maneuverability and prevents wheel bite while avoiding kingpin snagging on obstacles. It features a baseplate, hanger, kingpin, and a permanently affixed threaded shaft nut inside the baseplate. The kingpin is inverted compared to conventional trucks, so tightening it lowers the head away from the ground. The embedded shaft nut ensures stability and prevents wear of the kingpin against the baseplate.

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A skateboard truck design that allows for adjustable tightness of the truck turning while also preventing the kingpin from protruding below the baseplate surface. The truck has an inverted kingpin orientation where the threaded end faces the deck bottom. The kingpin threads into a fixed shaft nut inside the baseplate. As the kingpin is tightened, it lowers closer to the baseplate rather than protruding. This prevents the kingpin from hitting obstacles on the ground.

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A DIY customizable skateboard deck that allows beginners to easily balance and learn without falling as much. The deck has adjustable inserts on the top surface that can be changed to alter the feel and grip. The inserts are removable rods with adjustable rods above them. The removable rods are threaded into the deck and connect to fixed rods below. The adjustable rods can be raised or lowered to customize the deck's flex and feel. This allows beginners to gradually adjust the stiffness of the deck as they learn.

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A deck for a board and a skateboard having the same that increase the elasticity of the deck for board itself by interposing an elastic force reinforcing member made of a shape memory alloy between a plurality of panels to be stacked so that the jumping technique can be used more easily and highly. The deck also provides improved suspension for absorbing impact forces during riding and jumping. The skateboard has a separate suspension system with a buffering bar connected to a buffering member that absorbs wheel impacts and vibrations. The shape memory alloy interlayer between the deck panels provides extra elasticity for easier jumping, while the separate suspension reduces strain on the rider's knees.

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A skateboard truck that allows the user to adjust the torsional stiffness of the truck. The truck has a fork-shaped arm with compliant tongs that flex when the truck turns. The tongs are prevented from over-flexing by spacers on the axle. Clamping the wheels against the tongs loads the axle in tension, allowing the user to adjust torsional stiffness by adding or removing spacers.

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Skateboard with adjustable height and shock absorption to prevent wear and injury when riding on uneven terrain. The skateboard has a sliding support structure that can raise or lower the deck height. The structure has a movable column, sliding rod, and fixed column with threaded grooves. A bolt connects to one groove. To adjust height, rotate the bolt to disengage, move the base up, then reconnect the bolt. This slides the rod and column to adjust deck height. A compression spring connects the base and absorbs shocks. The adjustable height prevents wheelbite and ground contact on bumps. The spring prevents shock transfer to the rider's legs.

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Skateboard with adjustable wheelbase for customizing stability and maneuverability. The skateboard has a detachable two-part frame with adjustable distance between the left and right boards. This allows the middle board to pivot and change wheelbase length. The frame also has removable brackets with wheels. By separating the boards and brackets, the skateboard can be taken apart for compact transport. The adjustable wheelbase allows fine-tuning the stability and turning radius for different riding styles and terrain.

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Skateboard bracket that provides improved shock absorption and steering return compared to conventional skateboard trucks. The bracket has a base fixed to the skateboard, an axle bracket, an offset block, a spring, an adjusting bolt, and a locking bolt. The offset block and spring between the axle bracket and base compress when the skateboard hits bumps for shock absorption. The adjusting bolt allows tuning the initial spring compression. The locking bolt secures the bracket assembly. The offset block and bracket geometry with angled faces and recesses provide steering return.

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Skateboard design with improved torsional elasticity and easier assembly compared to existing designs. The skateboard has front and rear boards connected by torsionally flexible connectors. The connectors have housings with fixed and movable cams. The cams engage an elastic body between the housings. When the boards twist, the cams rotate the elastic body to provide restoring torsional force. The cams also guide the elastic body to prevent slipping. The cams and elastic body are contained in the housings. Screws secure the connectors to prevent twisting during assembly/disassembly.

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Skateboard with customizable performance by adjusting stability and turning characteristics. The skateboard has casters on both the front and rear boards. The caster rollers have vertical shafts that tilt forward. Twisting control members connect the shafts to the boards. An elastic member returns the shafts to vertical when released. The tilt angles differ between front and rear boards. This allows adjusting stability and turning by friction between the control members and rollers.

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Skateboard truck with two independently operating pivot points that achieve a variable turning motion without affecting the skateboard’s stability. The truck has a primary fixed pivot point and a secondary adjustable pivot point. By adjusting the horizontal and vertical distance between the primary and secondary pivot points, the truck can make tighter turns with less tilt from the rider. This is because changing the geometry of the truck alters the turning ratio or angle of turn of the skateboard even though the skateboard angle of tilt is held constant. The secondary pivot point allows adjustable turning radius while the fixed primary pivot point maintains stability. Additionally, the truck has an offset axle that swings towards the turn direction, moving the wheels away from the side of the board and eliminating wheel bite. This also shifts the center of gravity towards the turn, improving stability during steering.

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