| US4123080A | 1978-10-31 | |||
| US3954279A | 1976-05-04 | |||
| US5165710A | 1992-11-24 | |||
| US6536788B1 | 2003-03-25 | |||
| US20040207169A1 | 2004-10-21 |
| 1. | A skateboard with variable rate suspension that has adjustable ride height. (23). |
| 2. | A skateboard with variable rate suspension that has an adjustable flat spring travel by sliding a fulcrum block beneath it. (24). |
| 3. | A skateboard with variable suspension that has dampening effect on the flat spring by changing the tension on the compression springs. (25). |
| 4. | A skateboard with variable rate suspension that has the ability to help the rider perform higher jumps by a spring board effect. AAAAΛAAAΛΛAΛ AMENDED CLAIMS [received by the International Bureau on 29 June 2005 (29.06.05); original claims 1,2,4 cancelled; claim 3 is amended (1 pageQ)] (0027)1 claim 1. A skateboard comprising: A skateboard with an enhanced adjustable compression spring suspension. A compression spring assembly designed to allow a flat spring to independently rotate about the axis of the underside of a skateboard. This rotation of the flat spring along the axis of the underside of the riding deck is what helps a slalom rider achieve the tight down hill racing maneuver of darting in and out between a set of cones much like a snow ski slalom racer. This maneuver with the flat spring changing position allows the rider to lean his or her body at extreme Angles and allow the truck assembly wheels to stay planted on the ground. This flexibility allows the rider to perform more versatile fancy tricks and improve performance maneuverability in slalom down hill racing. λλ*λ*&λ** *A*. |
Skateboard with variable rate suspension
Specification
This invention consists of a riding deck (platform), adjustable fulcrum block, flat spring and one or more adjustable compression springs. When the rider applies pressure to either side of the deck there will be directional change. Depending on the weight of the rider, the board can be adjusted to increase or lower the ride height and increase or decrease the flat spring deflection, which stiffens the ride. The travel of the flat spring can be adjusted by increasing or decreasing the pressure on the coil over compression springs.
Skateboard with variable rate suspension
Background of the Invention
(0001) 1.) This invention pertains to the field of skateboarding. (05) The present invention pertains to a skateboard that has adjustable height rise, adjustable characteristic length of the flat spring and adjustable compression coil over springs. My invention will allow the rider to mechanically tune the skateboard to accommodate changes in rider's weights by changing the location of the fulcrum block under the flat spring and with changes to the tension of the compression springs.
Summary of the Invention
(06) It is the object of the present invention to provide adjustable suspension to the skateboard, adjust ride height, adjust flexing distance between skateboard deck ant! the riding surface and dampen the spring
springs.
Brief description of drawings
(07) Fig 1 prior art (08) Fig 2 shows a preferred embodiment of the present invention. (09) Fig 3 shows a preferred embodiment of the fulcrum block with flat spring. (10) Fig 3A shows a preferred embodiment of the fulcrum block. (11) Fig 4 shows a preferred embodiment of the hardware to attach the fulcrum to the skateboard deck. (12) Fig 5 shows a preferred embodiment of the compression spring assembly. (13) Fig 6 shows a preferred embodiment of the flat spring with 2 (two)-compression springs. (14) Fig 7 shows the preferred embodiment of the flat spring with 1 (one)- compression spring set up.
Detailed Description of invention
(15) Fig 2 shows the complete skateboard. The skateboard consists of a deck 3, a fulcrum block assembly 5, flat spring 2, and one or more compression spring assemblies 4, a pair of wheels 1. (16) Fig 3 shows the fulcrum block 1 tapered to one end to allow the flat spring to compress close to the underside of the deck. Radius 2 across the fulcrum block 1 allows the flat spring a support surface as the flat spring bends over it. The fulcrum block 1 has a pocket 3 and slot 4 to allow for the hardware screw 5 and threaded tee-nut 6 to fasten the fulcrum block 1 to the deck.
(17) Fig 4 shows a fastener 1 with a threaded tee nut 3. The end of the fastener 1 has no threads and protrudes through a hole in the flat spring 2 to keep the flat spring on center with the deck 4* As the fastener 1 is loosened, the fulcrum block 3 is able to slide back and forth, therefore changing the characteristic length (X) of the flat spring 2 from the radius fulerum point S to the end of the flat spring 2.
(18) Fig 5 shows the deck 1 mounted to the compression spring 5 and hardware 3,4,6,7. As nut 7 is threaded down, the pressure compresses the middle of the flat spring 2 and thus allows the ends of the flat spring 2 to rise giving more distance between the top of the deck 1 and the riding surface. Item 4 is a combination spring stop for compression spring 5 and guide sleeve that slips through flat spring 2. Also spring stop 4 is a mounting point that allows flat spring 2 to move up and down by either by adjusting position of nut 7 or by weight of the rider. Force of the weight of the rider that causes the flat spring 2 to push down against the resistance of compression springs 5 causing a dampening effect. Item 6 is a modified spring washer that keeps compression spring 5 on center with fastener 3.
(19) Fig 6 shows a preferred embodiment when 2 (two) compression spring assemblies 2 are used with flat spring 1.
(20) Fig 7 shows a preferred embodiment when 1 (one)-compression spring assembly 2 is used with flat spring 1.
(21) Although the present invention has been shown in the preferred embodiment, it will be appreciated by those skilled in the art that modifications to this invention may be made without departing from the scope of the inventions.