Exclusive Clamping Mechanism

The heart of the AccuPull is its patent-pending stretch head. Similar to a tenter frame, this is the mechanism by which a uniform strain is applied across each side of the sample.

accupull clampThe clamping force in competitor's instruments is traditionally generated through high-pressure pneumatics — each clamp is a miniature pneumatic cylinder operating on 800 - 1200 psi nitrogen.

AccuPull employs a patent-pending spring-loaded mechanism instead of pneumatics for clamping. Eliminating high-pressure pneumatics reduces the complexity and maintenance of the pantograph clamping mechanisms. The quantity of springs per clamp can be varied to achieve the desired clamping force.

This unique clamping system enables AccuPull to be used for applications up to 600°C with optional high-temperature packages.

In addition to reduced maintenance and high-temperature applications, the benefit of AccuPull's clamping approach is improved data acquisition characteristics. The high-pressure pneumatic tubing employed on competitor's mechanisms exerts small but measurable forces on the clamps. Eliminating background mechanical noises associated with pneumatic and hydraulic systems increases the "signal-to-noise ratio" thus improving data acquisition performance.

biaxial film clamping mechanism

AccuPull Advantages