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The lock time can be measured electronically, but is often instead calculated mathematically by the manufacturer. [citation needed] Important mathematical design parameters taken into consideration is the spring constant (stiffness), firing pin weight as well as the weight of any other moving parts and length of movement.
Like lock time, dwell time is a window for error, and can be minimized with a faster bullet or a shorter barrel. In some cases, a shorter barrel is desired to reduce dwell time, but without losing the sight radius of a longer barrel.
Interior ballistics can be considered in three time periods: [4] Lock time - the time from sear release until the primer is struck; Ignition time - the time from when the primer is struck until the projectile starts to move; Barrel time - the time from when the projectile starts to move until it exits the barrel. Diagram of internal ballistic ...
Modern time delay combination locks can have many functions such as multiple different codes, pre-set time lock settings (open and close times), pre-set vacation times (e.g. Christmas Day), dual code facility, and a full audit trail providing a detailed record of the lock history showing who opened the lock, when and how long it was open. [3] [4]
A mortgage rate lock is a guarantee from your lender that your interest rate won't change for a set period of time — often 30 to 60 days or more. ... says that choosing the right time to lock in ...
Harry Soref founded the Master Lock Company in 1921 and patented an improved padlock in 1924 with a patent lock casing constructed out of laminated steel. Linus Yale Sr. invented a pin tumbler lock in 1848. Linus Yale Jr. improved upon his father's lock in 1861, using a smaller, flat key with serrated edges that is the basis of modern pin ...
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