- L -
L-handle
n. an L-shaped
handle assembly which may be lockable
L-handle
lock
n. a cabinet lock
with an L-shaped handle
labeled door
n. a door which has a fire protection certification by one of the
recognized underwriting agencies
labeled exit
n. a labeled door
equipped with labeled hardware that can be used for
building egress
laminated
padlock
n. a padlock whose
case is constructed of separate plates usually riveted
together
LAN-alarm
web camera
n. a self-standing
surveillance camera having alarm compatible for IR
devices, switches and onboard website, Internet email sending
capability
large format interchangeable core
n. an interchangeable core which is
too large to fit into a small format interchangeable
core housing
laser
cut
adj. 1. a way of
cutting a key so that the roots of adjacent cuts are
connected by a straight-line cut; 2. a way of cutting
a key so that the root of a shallow cut is widened
until it intersects the included angle of an adjacent
deeper cut
latch
1. n. a mechanical
or magnetic door fastener which can automatically keep a
door, gate, etc., closed, 2. v. engagement of a latch
when a door, gate, etc. is pushed or pulled closed
latch
bolt
n. a spring
actuated bolt, normally with one or more beveled
surfaces, which, when aligned with the strike, engages it
automatically
latch
guard
n. a plate or
combination of interlocking pieces designed to block
access to the edge of a latch when the door is shut
latch
tube
n. the encasement
portion of some types of lockset that contains the latch
and may also contain its operating mechanism
latching
speed (of a door closer)
n. the final speed
of a door just prior to closing
latchset
n. a non-locking
device which contains only a latch bolt, a means of
operating said latch and all required trim
layout
tray
n. a compartmented
container used to organize cylinder parts during keying
or servicing
lazy
cam/tailpiece
n. a cam or
tailpiece designed to remain stationary while the
cylinder plug is partially rotated and/or vice-versa
leading
face
n. the door face
closest to the strike side of the jamb when the door is
open
leaf
n. 1.One half or section of a hinge 2. One door in a set
of double doors 3. One section of a multiple section door
left hand (man door)
adj. pertaining to an inward swinging door with hinges
on the left side, using the outside of the door as reference
left hand reverse bevel (door)
adj. pertaining to a left handed door which
swings outward
leg
irons
n. -pl. a pair of
ringlike fetters, connected by a short chain or straight
member, designed to be locked about the ankle
levels
of keying
n. pl. the
divisions of a master key system into hierarchies of
access, as shown in the following tables. Note: the
standard key coding system has been expanded to include
key symbols for systems of more than four levels of
keying.
TWO
LEVEL SYSTEM
LEVEL
OF KEYING
Level
II
Level
I
|
KEY
NAME
master
key
change
key
|
ABB.
MK
CK
|
KEY
SYMBOL
AA
1AA,
2AA, etc.
|
THREE
LEVEL SYSTEM
LEVEL
OF KEYING
Level
III
Level
II
Level
I
|
KEY
NAME
grand
master key
master
key
change
key
|
ABB.
GMK
MK
CK
|
KEY
SYMBOL
A
AA,
AB, etc.
AA1,
AA2, etc
|
FOUR
LEVEL SYSTEM
LEVEL
OF KEYING
Level
IV
Level
III
Level
II
Level
I
|
KEY
NAME
great
grand master key
grand
master key
master
key
change
key
|
ABB.
GGMK
GMK
MK
CK
|
KEY
SYMBOL
GGMK
A,
B, etc.
AA,
AB, etc.
AA1,
AA2, etc.
|
FIVE
LEVEL SYSTEM
LEVEL
OF KEYING
Level
V
Level
IV
Level
III
Level
II
Level
I
|
KEY
NAME
great
great grand master key
great
grand master key
grand
master key
master
key
change
key
|
ABB.
GGGMK
GGMK
GMK
MK
CK
|
KEY
SYMBOL
GGGMK
A,
B, etc.
AA,
AB, etc.
AAA,
AAB, etc.
AAA1,
AAA2, etc.
|
SIX
LEVEL SYSTEM
LEVEL
OF KEYING
Level
VI
Level
V
Level
IV
Level
III
Level
II
Level
I
|
KEY
NAME
great
great grand master key
great
grand master key
grand
master key
master
key
sub-master
key
change
key
|
ABB.
GGGMK
GGMK
GMK
MK
SMK
CK
|
KEY
SYMBOL
GGGMK
A,
B, etc.
AA,
AB, etc.
AAA,
AAB, etc.
AAAA,
AAAB, etc.
AAAA1,
AAAA2, etc.
|
lever (combination lock)
n. part of a combination
lock that engages the drive cam, when the proper combination
is supplied, and is directly attached to the locking
bolt
lever handle
n. a turn device in the general shape of an "L"
used on certain locks and latches, as an alternate to a knob for ease of
use
lever nose
n. the hooked portion
of a lever that engages the drive cam in a
combination lock
lever
pack
n. a set of lever
tumblers
lever rig
n. any device which
utilizes a fulcrum with a long bar or pole as a
means to apply pressure while drilling
lever
tumbler
n. a flat,
spring-loaded tumbler which usually pivots on a post. It
contains a gate which must be aligned with a fence to
allow movement of the bolt.
LFIC
abb. Large Format
Interchangeable Core
LH
abb. left hand
LHR
abb. left hand
reverse bevel
LHVD
abb. left hand
vertical down
LHVU
abb. left hand
vertical up
lift arc
n. the distance
a lever tumbler may be raised by a key from its at-rest
position
linkage
n. 1. any of various
parts in a lock that help transfer motion to the bolt of a
lock from a cylinder, turnpiece or other actuator not
mounted to or touching the bolt/lock case, 2. part of the
interconnected boltworks of an automotive lock
lip (of a strike)
n. the extended (usually curved) leading
edge of a strike
lite
n. a hole in a door or wall to admit light, usually with
glass or another transparent or translucent pane
loading
tool
n. a tool which
aids installation of cylinder components into the
cylinder shell
LOBC
abb. 1. locked on by
combination, 2. (sic) locked on back cover
LOBC index
n. the index to which
a combination is dialed in order to remove the lock's cover
local alarm
n. an alarm that is annunciated in the immediate vicinity of the activating
device
lock
n. any device which
prevents access or use by requiring special knowledge or
equipment
lock-in
adj. of or pertaining to a combination lock that is inoperable because the
last number of a combination is set in the forbidden zone
lock
service package
n. a kit offered by
the manufacturer or distributor of a product, which
contains what he deems required to properly service the
product
lock
stile
n. the vertical
edge of a door designed for lock or latch installation
lock window
n. an opening in the case of a lever tumbler lock for
viewing the fence entering the gates of the levers
lockdown bar
n. an
assembly which permits a laptop computer to be used, opened,
closed, but not removed from a premesis, often secured by a
padlock
locked
closed
adj. of or pertaining to a condition wherein
the bolt(s) are engaged and the lock(s) are restricting
access
locked on by combination
n. a combination
lock cover that can only be removed in conjunction with
dialing the combination or while the lock bolt is in motion
locked
open
adj. of or pertaining to a condition
wherein the bolt(s) are engaged and lock(s) are not restricting
access
locker
lock
n. 1. any
of various types of locks designed for a specific mounting
preparation commonly used on lockers as well as other
applications, 2. any of various locks used to lock lockers
locking
lug
n. a fixed
component of a safe which locks the safe door in place in
the locked position. See appendix
locking
lug nut
n. a lug nut which
requires the use of a key or special wrench
lockout
n. any situation in
which the normal operation of a lock or cylinder is
prevented
lockout
key
n. a key made in
two pieces. One piece is trapped in the keyway by the
tumblers when inserted and blocks entry of any regular
key. The second piece is used to remove the first piece.
lockset
n. a locking
device, complete with trim, mounting hardware and strike
locksmith
n. a person with
the knowledge and ability to select, install, service and
bypass all the components of an electrical or mechanical
lock
LoCo
abb. low
coercivity
lost ball keying
n. a construction keying method that uses a tiny ball(s) in
the pin stack to allow construction master key operation. The ball(s) may be
removed from the pin stack without disassembly of the cylinder.
low
coercivity
adj. a low energy
form of magnetic encoding measuring 300 Oe which is not
very resistant to accidental erasure
lug door
n. a usually rotatable safe door which has projections that interlock with
the safe body to retain the door
|