ratchet

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Related to ratcheting: ratcheting up

ratchet

1. a device in which a toothed rack or wheel is engaged by a pawl to permit motion in one direction only
2. the toothed rack or wheel forming part of such a device

ratchet

[′rach·ət]
(design engineering)
A wheel, usually toothed, operating with a catch or a pawl so as to rotate in only a single direction.
References in periodicals archive ?
13] investigated the uniaxial ratcheting behavior of polytetrafluoroethylene (PTFE) with different loading rate, mean stress and stress amplitude at ambient and elevated temperatures, respectively.
Captain Ketaily commented, "I am very happy to incorporate the EZ Spanner[TM] Ratcheting Hydrant Wrench into our curriculum.
According to figures cited by the company, there are more than 9 million fracture repair and spine procedures globally each year that require a surgical implant and more than 80 percent can benefit from use of a versatile, single-use ratcheting instrument.
For more on the challenge of ratcheting up performance, see his report for the IBM Center for the Business of Government: Performance Leadership: II Better Practices That Can Ratchet Up Performance.
The new RIDGID RC-1625 ratcheting plastic pipe and tubing cutter, from RIDGID, has a large capacity and an advanced blade design that reduces required cutting force.
Cons: The show was tainted by its casting - and subsequent firing - of Shannen Doherty, subtextually ratcheting its quality quotient down a notch or two.
That law whittles the estate-tax rate down to 45 percent by 2007 while simultaneously ratcheting up personal exemptions--the amount taxpayers can pass to heirs free of estate tax--over the next four years.
In his New Year message Mr Kennedy said: ``Labour is counting on the politics of fear, ratcheting up talk of threats, crime and insecurity, while the Conservatives are re-working populist scares about asylum and the European `menace'.
Already on the drawing beards of one of Duncan's competitors is a yo-yo with an even finer ratcheting mechanism.
The low profile sockets, combined with the zero degree mini ratcheting wrench, work well in the tightest of areas.
29, 2015 /PRNewswire/ -- MedTorque, a leading manufacturer of silicone handle instruments for the orthopedics industry, announced today the release of its new line of TRI-GEAR(TM) silicone handle ratcheting instruments for use in orthopedic and spine surgeries.
As one of the most important characteristics of polymer is the decrease of ratcheting rate, the plastic shakedown capability, and the memory and recovery of the accumulated plastic strain under symmetrical stress cycles, the ratcheting behaviors, and fatigue predictions of polymer under uniaxial and multiaxial loadings have been studied by both experiments and simulations.