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ratchet
(redirected from ratchets)

    Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.01 sec.

ratchet

Mechanical device that transmits intermittent motion or permits a shaft to rotate in one direction but not in the opposite one. Reversible ratchets are used on socket wrench handles and are convenient for tightening or loosening bolts in positions where a complete revolution of a wrench handle is impossible. They are used in mechanical jacks to lock the jack rod after each successive lift.

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.
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What makes these adjustments possible to perform are the headrests'' ratchets or claws.
Four Tips for Your Patio Furniture Repair.. by bilal shaikh / Business community
Although a company engineering order stated that no validation was needed because the firm visually inspected the formed ratchets during production, FDA found the justification not adequate because it does not explain whether the visual inspection can detect microcracks and other defects in the distal end of the ratchet, and thus prevent occurrences of ratchet slippage in catheter impeding stent deployment in patients.
Validation procedures lacking at IDev Technologies by Mashaw, Rebecca / Validation Times
Big changes like changeable bits, reversible shafts, and ratchets contained in small handles are not true improvements.
What to Look for when Selecting Hand Tools by Michael Brommel / Home based business community
 
 
 
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