SpringSkate2週間前、YouTube にサスペンションフレームの動画がアップされ、今度はスローモーションで追加されました。4輪のショックを板バネで吸収しているので、体格によっては硬かったり軟らかかったりすると思うのですが、写真のようなラフ路面だったら・・・これはモー絶対に有効であって欲しくなります。RB09に装着している写真を見ると、数年は試行錯誤しているのかも知れません。ただ、こんな路面だと余計に耐久性が要求されると思うのですが、金属疲労でポッキリ!何て事に成らぬよう願いたいモノです。

Inline Spring Skates with Independent suspension

In line skates with full suspension, not just a concept, we have several pre-production prototypes!.


Originally designed as a recreational/fitness skate to address a complaint from many skaters about the foot numbing vibrations transferred to the foot by rough pavement. The design needed to remove as much of the foot numbing buzz as possible, had to be simple, without wear surfaces or intricate parts, the only moving parts would be the spring flex. Wheels had to float easily over bumps on pavement, uneven surfaces etc. but needed to be laterally rigid, smooth while gliding but solid when pushing off. Had to attach to existing skate boots, they also had to robust, durable and lastly manufacturable with current technology and not be priced out of the market.


With countless hours / miles of testing / development our current version the V5 now addresses all our requirements and more!

During the development process we found a few additional key advantages to the design as follows:

The ability to skate safely over loose gravel on pavement, rotate all 8 wheels with only 4 screws. vs. a minimum of 8 screws on most inline 4 wheel skates, some have 16 screws (2 per axle).

User adjustable maneuverability; hockey skaters "rocker" their wheels by moving the front and rear wheel up slightly, this leaves only 2 wheels contacting the floor at any one time. Doing this the skates are much more maneuverable as the wheelbase between the two wheels in contact is now substantially shorter than the overall wheelbase of the 4 wheels. This can also easily be accomplished with SpringSkates by concentrating pressure on the front or rear of the skate which will deflect the wheels enough to lift one or even two wheels leaving two or three wheels in contact, in this condition the skate is now much more maneuverable. By transferring your weight back to all four wheels the skate will again perform as a longer wheelbase skate.

The patented system consists of stainless steel springs attached to an aluminum frame that mounts to the boot. This allows for each wheel to flex vertically independent of the other wheels. The unique design of the springs allows for a well balanced suspension while maintaining excellent lateral stability. The frame is precision machined from an extruded aircraft grade aluminum alloy and anodized for maximum corrosion resistance. The stainless steel springs are cold formed, machined, heat treated, and polished, to exacting specifications. The stainless steel axles are machined and welded to the springs and use standard inline skate wheels up to 90mm.

The suspension removes most of the foot numbing buzz, especially the higher frequencies, while skating on paved surfaces. We have one person in his late 70's who up until his second hip replacement, has been skating marathon events on the skates, has commented more than once that he could not have gone the distance on rigid skates. Great low impact aerobic workout, for all those boomers with bad joints.

The video is simple display showing the movement of the suspension. The first four bumps are 0.375 (9.53mm) the last bump is 0.500" (12.7mm) This does not illustrate the actual travel while skating. We attached data acquisition instruments on the skates and put a on a few miles, the results were the front and rear wheels deflected up to 0.400 (4mm) and the center wheels deflected up to 0.280" (7mm) This was an around town skate course with a 210lb skater, not at a skate park or doing any stunts.

The skates have also been entered in a contest by SolidWorks and NASA Tech Briefs.
Inline Skating Notebook: The Hydroskate