interlock

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interlock

a device, esp one operated electromechanically, used in a logic circuit or electrical safety system to prevent an activity being initiated unless preceded by certain events

Interlock

 

a set of methods and facilities that ensure holding the operating parts (components) of an apparatus, machine, or circuit (electrical) in a definite state which is maintained regardless of whether the interlocking action ceases. Interlocking increases the safety of service and the operating reliability of equipment, ensures the required operational sequence for mechanisms and components, and restricts the motions of mechanisms to the limits of the operating zone. The state (position) of operating parts in an object is held, depending on the operating principle of the interlocking device, by mechanical, magnetic, optical, or electrical means. Interlocking is discontinued by an action that returns the locked portions of an apparatus, machine, or circuit to the initial condition (before the interlocking) or permits a transition into another operating position by the presence of a corresponding signal. Interlocking can be achieved by manual, semiautomatic, and automatic means. In electrical equipment or in equipment having an electrical control, an interlock is set up to counter simultaneous actions or an incorrect sequence of connections or disconnections by interrupting the electrical power circuits; in machines with a hydraulic drive, an interlock shuts off the valves in the supply system; and so on. For example, in domestic gas hot water heaters there is an interlocking device that turns off the gas supply if the inflow of water is interrupted.

Interlocking is extensively employed in transportation, electric power stations and substations, industrial plants, computing equipment, and various production and domestic apparatus and devices.

I. E. DEKABRUN

interlock

[′in·tər‚läk]
(computer science)
A mechanism, implemented in hardware or software, to coordinate the activity of two or more processes within a computing system, and to ensure that one process has reached a suitable state such that the other may proceed.
(engineering)
A switch or other device that prevents activation of a piece of equipment when a protective door is open or some other hazard exists.

interlock

A device that prohibits an action from taking place.
References in periodicals archive ?
20, 2015 /PRNewswire/ -- Intoxalock, a Des Moines, Iowa company that provides innovative alcohol monitoring technology with its NHTSA approved ignition interlock devices (IIDs), announces record growth with expansion to over 1,600 installation and service locations nationwide in 2015.
com)-- Blow and Drive Interlock Corporation's BDI-747 has now received approval by authorities in 7 US States as an approved Ignition Interlock Device that is mandated for use by most DUI offenders.
I did find that interlocks limited the number of voices in the conversations at the highest levels of corporate and nonprofit life.
Call For Nomination for Industrialisation and procurement of the ITER Interlock Discharge Loop Interface Boxes
The MD and HD Series interlocks use 316 stainless steel cylinders, keys, bolts, and inner-workings that withstand high temperatures and corrosives in outdoor or harsh environments.
Traditionally, however, interlocks function as independent and stand-alone safety systems.
These enhancements are broadening the application of vehicle interlocks to court-based recovery programs such as those implemented by special DUI courts (V oas et al.
Contact Fortress Interlocks on tel 01902 349000 or visit www.
Under current law, both offenders convicted of driving under the influence of intoxicants and those who enter a DUII diversion program to avoid the risk of conviction must legally install an interlock that they pay for.
The results also suggest that it may be unrealistic for boards to expect interlocks with regulatory agencies to shield a firm from the basic rules of competition.
An ingenious play of cross-axes, local symmetries and subtle asymmetries, all enlivened by 45 degree rotations (a theme already present in the Roberts hostels and one of the old houses), now tightly interlocks these with each other and the setting.
Just aligning and pressing two such surfaces face-to-face interlocks the mushroom caps to produce a tough, permanent bond.