it is clear that adjacent coils contact as you approach the valvetrain-limiting speed (this is known as spring surge). Hence, modern springs are designed to run near coil bind and use the coil-to ...

America's oil and gas drilling boom is fueling use of polyethyene pipe — and prompting Pipe Coil Technology Inc. to build coiling machinery for larger-diameter pipe. Pipe Coil is introducing to North ...

According to a recent report by Venture Development Corporation (VDC), the plug-in power line surge suppressor market averaged 5% growth during the last two years, despite a difficult 2001. The ...