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rabbeted
door
n. a door having and
edge contoured with an offset creating two surfaces
which form an overlap at the abutting edge
rabbeted
lock
n. a lock with a face
or front which is specially formed to use in a rabbeted
door
radio frequency identification
n. an
identification technology using short range radio frequency
transmission
radiused
blade bottom
n. the bottom of a
key blade which has been radiused to conform to the
curvature of the cylinder plug it is designed to enter
rail
n. the horizontal construction member located
on the top and bottom of a door
rake
(rake & hang)
n. a picking technique
that attempts to use quick withdrawal of the pick to
set the tumblers
random
master keying
n. any undesirable
process used to master key which uses unrelated keys to
create a system
rap
v. 1. to unlock a
plug from its shell by striking sharp blows to the spring
side of the cylinder while applying tension to the plug
2. to unlock a padlock shackle from its case by striking
sharp blows to the sides in order to disengage the
locking dogs
ratchet
lock
n. any lock which
incorporates a ratchet device allowing locking in more
than one position
rated
adj. of or pertaining to a product's compliance with
one or more recognized standards such as UL.
read
v. to decode a lock
combination visually without disassembly of the lock or
cylinder
read
key
n. a key which
allows access to the sales and/or customer data on
certain types of cash control equipment (e.g., cash
register)
reader
n. a device used in an access control system
to interrogate an electronic, magnetic or optical type of
credential
rear drive
adj. of or pertaining to a combination lock with the wheel pack located
between the dial and the drive cam
recombinate
v. to change the
combination of a lock, cylinder or key
record safe
n. a safe whose primary purpose is to preserve paper documents against
fire
recore
v. to rekey by
installing a different core
redundant button
n. a secondary release switch for an
egress device to allow unlocking in case of a malfunction
of the primary release switch
register
groove
n. the reference
point on the key blade from which some manufacturers
index the bitting depths
register
number
n. 1. a reference
number, typically assigned by the lock manufacturer to an
entire master key system 2. a blind code assigned by some
lock manufacturers to higher level keys in a master key
system
rekey
v. to change the
existing combination of a cylinder or lock
relock
trigger
n. the part of a safe relocking device
which causes the mechanism to activate
relocking
device
n. any device intended to prevent normal
opening of a safe as a result of an attack, two types are
typically used, internal and external
remote
release
n. a mechanism for
permitting the unlocking of any lock device at a distance
from the device
removable
core
n. a key removable
core which can only be installed in one type of cylinder
housing; e.g., rim cylinder or mortise cylinder or
key-in-knob lock
removable
cylinder
n. a cylinder which
can be removed from a locking device by a key and/or tool
removable dial
n. a combination lock actuator that may be taken from the
lock when not in use
removable
shackle
adj. referring to a
type of padlock which is unlocked by removing the shackle
from the case
removal
key
n. the part of a
two-piece key which is used to remove its counterpart
from a keyway, see also "control key" #1 &
#3, see also "construction breakout key"
renter's
key
n. a key which must
be used together with a guard key, prep key or electronic
release to unlock a safe deposit lock. It is usually
different for every unit within an installation.
repin
v. to replace pin
tumblers, with or without changing the existing
combination
reset
code
n. in an electronic
lock, a factory-set or user-set code or combination that
will restore all factory default settings except the
current reset code and the audit trail
reset
key
n. 1. a key used to
set some types of cylinders to a new combination. Many of
these cylinders require the additional use of tools
and/or the new operating key to establish the new
combination. 2. a key which allows the tabulations on
various types of cash control equipment (e.g., cash
registers) to be cleared from the records of the
equipment
resettable tumbler
n. a tumbler which can have its reference
position altered by reorientation within the cylinder
without disassembly
resistor pellet
n. the encapsulated resistor with exposed
contacts installed in a key, such as that for VATS
restraint
n. a device designed with a shackle that restricts the movement or
actions of a person, such as handcuffs
restricted
adj. of or
pertaining to a keyway and corresponding key blank whose
sale and/or distribution is limited by the lock
manufacturer in order to reduce unauthorized key
proliferation
retainer
n. a component which is clipped, staked,
or driven in place to maintain the working relationship
of other components
retainer pin
n. 1. a component seated on a spring, in
the end of a plug, that interacts with a retainer cap to
keep it in place. 2. Any non-threaded rod that maintains
the relationship of two or more different parts.
retrofit
lever
n. a lever handle
designed to replace the knob of a lockset
return
n. 1. the extension
of a cam which bends back towards the mounting surface and
the measurement of the remaining distance from the mounting
surface to the end of the cam, 2. the distance from a door
face to the tip end of a lever handle
reveal
n. the distance
measured from the trim surface of the jamb to the
leading face of the door on the stop side when closed
reverse
bevel
adj. pertaining to the bevel of a door which swings
towards the outside
reverse keyway
n. a keyway shape that is a mirror image of another
reverse
strike
n. a strike used for rim
mounted hardware used on reverse bevel doors
reversible
adj. pertaining to
hardware that is manufactured in a way, which allows
field assembly or adjustment to accommodate installation
on doors with different orientations
reversible
key
n. a usually symmetrical key which may be inserted either way up to
operate a lock
RF
abb. Radio Frequency
RFID
abb. radio frequency identification
RH
abb. right-hand
RHR
abb. (right hand
reverse bevel)
RHVD
abb. right hand
vertical down
RHVU
abb. right hand
vertical up
right hand (man door)
adj. pertaining to an inward swinging door with hinges
on the right side, using the outside of the door as
reference
right hand reverse bevel (door)
adj. pertaining to a right handed door which swings outward
rim
cylinder
n. a cylinder
typically used with surface applied locks and attached
with a back plate and machine screws. It has a tailpiece
to actuate the lock mechanism
rim exit device
n. an exit device
mounted on the door surface
rim
lock
n. a lock or latch
typically mounted on the surface of a door or drawer
rim vertical rod exit device
n. a vertical rod exit device mounted on the door surface
ring
key
n. a key attached
to a ring to be worn on the finger
RL
abb. The title
"Registered Locksmith" as awarded by ALOA
RLD
abb. relocking device
RM
abb. row master key
root
depth
n. the dimension
from the bottom of a cut on a key to the bottom of the
blade
rose
n. a usually
circular escutcheon
rotary file cutter
n. a key machine cutter with very fine teeth which are formed by
stamping, such as a file
rotary
tumbler
n. a circular
tumbler with one or more gates. Rotation of the proper
key aligns the tumbler gates at a sidebar, fence or
shackle slot.
rotating
constant
n. one or more
cut(s) in a key of any level which remain constant
throughout all levels and are identical to the top master
key cuts in their corresponding positrons. The positions
where the top master key cuts are held constant may be
moved, always in a logical sequence
rotating
constant method
n. a method used to
progress key bittings in a master key system, wherein at
least one cut in each key is identical to the
corresponding cut in the top master key. The identical
cut(s) is moved to different locations in a logical
sequence until each possible planned position has been
used.
round
back
adj. pertaining to
a rim cabinet lock whose mounting flanges and case form
the general shape of a circle when viewed from the back
round
cornered latch
adj. of or pertaining to a latch mounting plate with radiused corners
rounded front
n. a lock front or face plate that is radiused to match the edge of the
door
row
master key
n. the one-pin
master key for all combinations listed on the same line
across a page in the standard progression format
RS-485
std. an Electronics Industry
Association (EIA) standard for serial multipoint communications commonly used in
online access control systems for distances up to 4000 feet
RST
abb. the title "Registered Safe Technician" as
awarded by NSO
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