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In software engineering, a spinlock is a lock that causes a thread trying to acquire it to simply wait in a loop ("spin") while repeatedly checking whether the lock is available. Since the thread remains active but is not performing a useful task, the use of such a lock is a kind of busy waiting .
A mop handle consists of a long piece of wood or metal tubing fitted with a specific attachment for the mop head. The handle can be attached the mop head by means of: clamp; hanger (with strands doubled over the hanger) plastic claws (attached to the strands) pouch (as with many professional flat mops) screwing (as with the classic yarn mop)
The number of wheels in the mechanism determines the number of specific dial positions that must be entered to open the lock, so a three-sequence combination is required for a three-wheel lock. As the dial rotates, there will not be enough space for the drive pin on the cam to pass the fly on that face of the first wheel closest to the cam, and ...
When the handle is pushed down, the shaft slides into pawls in the tubular stem, turning the bit. Most screws are "self locking" and axial force on the shaft will not turn the screw. This self-locking property is one reason for the very large use of the screw in threaded fasteners such as wood screws, sheet metal screws, studs and bolts ...
The fact that this versatile appliance (which functions as both a vacuum and mop) is down to its all-time best price is enough for it to warrant a space in our carts. But throw in a Martha Stewart ...
Locking pliers remain clamped to an object without requiring continuous pressure on the handles based on the "over-center" principle. After being properly adjusted using a threaded screw, the pliers are brought to bear by cam action. In the process of being closed on an object the mechanism passes through a point of maximum tightest clamping ...
Spin lock may refer to: Spin lock, a part of artillery fuze mechanism which arms the munition upon firing; Spinlock, a concept in multithread programming
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