- P -
pack
n. the set of
tumblers in a lever tumbler or combination lock
packing
n. material used to provide sealing between chambers of a door closer
paddle handle
n. a type of actuator which is relatively flat and operates
the mechanism when pivoted on an axis near one end
padlock
n. a detachable and
portable lock with a shackle which locks into its case
padlock
eye(s)
n. a fixture typically of flat
material or material bent at a 90 degree angle, with a hole to receive the
shackle of a padlock. Usually used in pairs.
page
master key
n. the three-pin
master key for all combinations listed on a page in the
standard progression format
panic
button
n. any switching
device in an alarm system designed to be activated by a
person in a panic situation. It creates an immediate
alarm condition
paracentric
adj. 1. of or
pertaining to a keyway with one or more wards on each
side projecting beyond the vertical center line of the
keyway to hinder picking 2. of or pertaining to a key
blank made to enter such a keyway
parallel arm
n. a type of door closer and/or closer
mounting which leaves the arm generally parallel to the
door face when closed
parity
n. the property of being either even or odd, as the
depth number of a bitting in a combination, or the
possible progressives in a given position of a two
step progression
parity pattern
n. the collective description of the parities of a
group of bitting positions in a two step progression,
typically expressed in an even/odd sequence, e.g. EOOEEO
passage
set
n. a
latchset
passive infrared device
n. a device used to detect motion by detecting changes in
heat
passive relocking device
n. a device that places its bolts only upon
attack to the safe or lock
patented
unrestricted keyway
n. a specific keyway which is
sold without restriction by a lock maker, but which retains patent protection
against non-original key blank makers
pattern key
n. 1. an original key kept on file to use in a key
duplicating machine when additional keys are required,
2. any key which is used in a key duplicating machine
to create a duplicate key
pawl
n. the cam of
certain automotive cylinders
peanut
cylinder
n. a mortise
cylinder of 3/4" diameter
peel
v. to destructively attack a safe by removing or
partially removing the sheet metal of the door front or the outer surface
of one of the other sides
peep hole
n. a small lens or opening which allows a
limited view through a door
perforated tumbler
n. a combination wheel
with multiple holes within its diameter for mounting the fly
personal
identification number
n. a series of
numbers and/or letters associated with a particular
individual as a means of identification
photo-electric detection device
n. a detection device actuated by abrupt changes in light
pick
n. 1. a tool or
instrument, other than the specifically designed key,
made for the purpose of manipulating tumblers in a lock
or cylinder into the locked or unlocked position through
the keyway, without obvious damage. 2. v. to manipulate
tumblers in a keyed lock mechanism through the keyway,
without obvious damage, by means other than the
specifically designed key
pick gun
n. a machine
designed to impact all of the bottom pins of a pin
tumbler lock at exactly the same time and thereby
bounce the top pins beyond the shear line
pick
key
n. a type of
manipulation key, cut or modified to operate a lock or
cylinder
Pillar
lock
n. 1. a lock mounted
in a vertical support member, typically of a vehicle or
furniture, 2. (obsolete) a lock mounted on a vehicle door
pin
v. to install pin
tumblers into a cylinder and/or cylinder plug, see also
"pin tumbler"
PIN
abb. personal
identification number
pin
chamber
n. the
corresponding hole drilled into the cylinder shell and/or
plug to accept the pin(s) and spring
pin kit
n. a type of keying
kit for a pin tumbler mechanism
pin
stack
n. all the tumblers
in a given pin chamber, see also"pin stack
height"
pin
stack height
n. the measurement
of a pin stack, often expressed in units of the lock
manufacturer’s increment or as an actual dimension
pin
tray
n. see "layout
tray"
pin
tumbler
n. usually a
cylindrical shaped tumbler. Three types are normally
used: bottom pin, master pin and top pin.
pin tumbler push key (padlock)
n. a type of padlock that requires pushing
the key inward to disengage the shackle after insertion of
the key creates a shear line
pin
tweezers
n. pl. a tool used
in handling tumblers and springs
pinning
block
n. a holding
fixture which assists in the loading of tumblers into a
cylinder or cylinder plug
pinning
chart
n. a numerical
diagram which indicates the sizes and order of
installation of the various pins into a cylinder. The
sizes are usually indicated by a manufacturer's reference
number which equals the quantity of increments a tumbler
represents.
pippin file
n. a file with a cross section that
resembles a pip, or apple seed
PIR
abb. passive
infra-red
pitcher handle
n. lock trim which serves as a pull and is
generally perpendicular to the door at its top mount, then
bends and tapers to its bottom mount
pivot
n. a hinge with
a fixed pin and knuckle, forming a single joint
plasma cutter
n. tool that uses electricity and air pressure to cut
various metals
plug
n. the part of a
cylinder which contains the keyway, with tumbler chambers
usually corresponding to those in the cylinder shell
plug
follower
n. a tool used to
allow removal of the cylinder plug while retaining the
top pins, springs, and/or other components within the
shell
plug
holder
n. a holding
fixture which assists in the loading of tumblers into a
cylinder plug
plug
retainer
n. the cylinder
component which secures the plug in the shell
plug spinner
n. a tool which rotates a picked cylinder
plug so quickly in the desired direction that it cannot
lock during its rotation
plunger
lock
n. any of various
spring-loaded locks or cylinders which move in or out to
accomplish a locking function
pocket door
n. a door which
opens by sliding into a hollow wall
pocket strike
n. an electric strike which does not
require a face cut in the door jam, yet allows operation
of the boltwork of the door lock, often by manipulating
the locking and deadlatching portions via end pressure
poke hole
n. a hole designed to allow tools to poke
into or through it, generally for accessing a retainer
pop out
lock
n. a plunger lock
usually used on vending machines to prevent operation of
a T-handle
positive latching
n. the condition of a door being secured
such that manual operation of the latch or bolt mechanism
must occur before it may be opened
positive
locking
n. the condition
brought about when a key cut which is too high forces its
tumbler into the locking position. This type of locking
does not rely on gravity or spring pressure.
positional
master keying
n. a method of
master keying typical of certain binary type disc tumbler
key-in-knob locks and of magnetic and dimple key
cylinders. Of all possible tumbler positions within a
cylinder, only a limited number contain active tumblers.
The locations of these active tumblers are rotated among
all possible positions to generate key changes. Higher
level keys must have more cuts or magnets than lower
level keys.
post
(of a key)
n. the portion of a
bit key between the tip and the shoulder, to which the
bit(s) is attached
post (of a lock)
n. 1. a part of a lock that serves as a guide
for a drilled key and prevents entry of a non-drilled key, 2.
the center bearing surface of a mechanical combination lock
that the wheels rotate on
power
locks
n. electrically or
electro-pneumatically operated locks
power pack
n. a battery with a special configuration
designed for use in a specific product
practical
key changes
n. pl. the total
number of usable different combinations available for a
specific cylinder or lock mechanism
pre-assembled
lockset
n. a lock designed
to be installed into a cutout in the edge of a door. The
lock body and most or all of its trim need no further
assembly other than securing it to the door.
prep
n. 1. the location
and dimensions of the cut out(s) and reinforcing in a
door or frame required to accept a piece of hardware. 2.
v. to prepare a door or frame for installation of a lock
or other hardware
prep
key
n. a type of guard
key for a safe deposit box lock with only one keyway. It
must be turned once and withdrawn before the renter's key
will unlock the unit.
primary
key
n. a key, which
operates the ignition, lock on a vehicle. It may or may
not also operate some or all the other locks on the
vehicle.
privacy
key
n. a key which
operates an SKD cylinder, see also "emergency
key"
profile
cylinder
n. a cylinder with
a usually uniform cross section, which slides into place
and usually is held by a mounting screw. It is typically
used in mortise locks of non-U.S. manufacture.
profile pin
n. a stationary pin
placed in the plug of a pin tumbler
lock to act as a ward to produce a keyway
progress
v. to select
possible key bittings, usually in numerical order, from
the key bitting array
progression
n. a logical sequence of selecting possible key bittings,
usually in numerical order from the key bitting array. 2. a system of
generating keys with different cut combinations for unknown positions,
when a partial bitting is known
progression chart
n. a list of combinations to consider when fitting keys
to a lock with only a partial bitting known, typically arranged to
minimize the number of key blanks needed
progression
column
n. a listing of the
key bitting possibilities available in one bitting
position as displayed in a column of the key bitting
array
progression
list
n. a bitting list
of change keys and master keys arranged in sequence of
progression
progressive
n. any bitting
position which is progressed rather than held constant
proprietary
adj. of or
pertaining to a keyway and key section assigned
exclusively to one end user by the lock manufacturer. It
may also be protected by law from duplication.
protected key
n. a physical key that affords legal remedies against
duplication
PRP
abb. "Proficiency Registration Program"; a
locksmith certification program administered by ALOA
public
way
n. any parcel of land
essentially open to the outside air and permanently appropriated to the public
for public use and having a clear width and height of not less than 10 ft.
pull handle
n. trim for gripping to apply pulling force to a door
pull plate
n. a generally flat
and commonly rectangular trim with an attached handle
for pulling open a door
Pullman
keeper
n. a type of keeper
which is shaped to operate with the radiused contour of a
Pullman latch
Pullman
latch
n. a type of latch
which pivots like a hinge and whose locking side is
radiused
pulse dialer
n. a telephone communication device,
normally activated by an alarm, that uses electrical
pulses to dial a predetermined number
punch proof spindle
n. a spindle that is shouldered or tapered inward to prevent it from
being driven into or through the mechanism
push plate
n. a generally flat
and commonly rectangular trim mounted for hand contact to
push open a door
push button lock
n. a self contained lock with controls
that must be pressed in a specific pattern or sequence to
open the lock
push key padlock
n. a padlock whose shackle is released by full insertion
of the key into the lock
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