Originally Published MPMN May 2005

HOTLINE

Ratcheting Mechanism Provides Smoothness and Precision

Device is useful in developing surgical instruments

A patent has been awarded to Gauthier Biomedical (Grafton, WI) for a ratcheting mechanism contained in the company’s line of screwdrivers. The ratcheting screwdriver is designed to limit axial and side-to-side play between the shaft and the handle. With a stainless-steel construction, no-play design, and a variety of silicone handle options, the device provides smoothness and precision for effective ratcheting action...

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Linear Drive Has Zero Backlash

Special rolling ring bearings provide constant single-point contact between the bearings and the drive shaft

An alternative to leadscrew-based linear drive systems provides backlash-free linear motion. The Model RS4 drive nut from Amacoil Inc. (Aston, PA) is available in seven sizes to meet varying payload and linear speed requirements. It is configurable for vertical or horizontal travel. Shaft rotational speeds may be up to 10,000 rpm, depending on the size of the drive nut. Linear travel speeds range from 0.5 up to 4.0 ft/sec, depending of the size of the drive and the weight of the payload. Axial thrust ranges from 22 to 449 lb...

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Gas Analyzers Measure Oxygen For a Variety of Applications

A zirconia oxygen sensor can calibrate to obtain readings from less than 1 ppm to 100% volume

Analyzers allow for fast and accurate analysis of oxygen gas in applications ranging from gas purity to vacuum-leak detection. Each Rapidox 2100 and Rapidox 3100 from CEA Instruments (Emerson, NJ) comes with software for data logging...

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