Glossary - P

padbar (n)
substantial form of hasp and staple for higher security applications

padbolt / padlock bolt (n/np)
bolt which can be secured in the locked position by a padlock

padlock (n)
detachable and portable locking device which uses a shackle to link itself to an object, or link objects together (see also EN 12320)

padlock fitting (np)
device to enable a padlock to be used to secure a door leaf to a frame, or to secure two door leaves together (see also EN 12320)

palace motion (np)
two-way latch action, for use when follower is not on centre-line of latch bolt, to give approximately equal torque in both directions

panel lock (np)
two-bolt upright lock for use on metal casement doors

panic bar (np)
horizontal bar of a panic exit device which is used to activate the mechanism (see also EN 1125 and prEN 13633)

panic bolt(s) (np)
(see "panic exit device")

panic exit (np)
egress point on an escape route that is likely to encounter a panic situation

panic exit device (np)
door locking arrangement that allows egress under all conditions in response to light pressure anywhere along a horizontal bar running the width of the door (see also EN 179, EN 1125, prEN 13633 & prEN 13637)

panic exit system (np)
(see "electrically controlled panic exit system")

panic latch (np)
latch which is released by pressure anywhere along a horizontal bar running the width of the door

panic situation (np)
state of affairs where a number of people in a crowd may be driven hysterical by the need for self preservation, and are not acting logically or sensibly

paracentric key (np)
key with at least one instance of two bullets of sufficient depth that they overlap within the thickness of the key bit

parallel arm (adj)
having an armset arrangement in which the arms are parallel to the face of the door leaf when the leaf is in its closed position

pass (v)
operate with the same key

pass key (np)
key that operates a set of locks that are keyed alike

passé-partout (np)
(see "master key")

passive safety (np)
(Product specific term - see prEN 12650)

patio door lock (np)
lock for glazed sliding doors or door height windows

peg stay / peg type casement stay (np)
casement stay with pivoting arm having holes along its length to engage the casement peg in a number of positions

peg ward (np)
combination of wards resembling a sash ward, but fixed by pegs to the lock case

physical attack (np)
attempt to gain illegal entry into a building using force

pick (v)
attempt to open a lock by manipulative means

pin ¹ / pin tumbler (n/np)
cylindrical-shaped detaining element of a cylinder mechanism that it is positioned by the key as it is inserted

pin ² (n)
(see "key pin")

pin ³ (n)
(see "hinge pin")

pin key (np)
key with key bit projecting radially from a solid key pin

pin tumbler mechanism (np)
locking mechanism in which the principal detaining elements are a pins ¹

pipe key (np)
key with key bit projecting radially from a hollow key pin

plain action (np)
latch action in which bolt and follower are controlled by the same spring

planted stop (np)
door stop¹ provided by a separate component to an otherwise plain door frame

plug (n)
rotating part of a cylinder lock containing the pins¹, and into which the key is inserted (see also EN 1303)

plug protection plate (np)
(Product specific term - see EN 1906)

pocket / racking / racking slot (n/np)
radial cut-out in a lever which whilst retaining the bolt stump in the thrown or withdrawn position allows the lever to be lifted

positive break switch
(Product specific term - see prEN 13633 & prEN 13637)

postal handle (np)
combined letter plate and fixed pull handle

postal knocker (np)
combined letter plate and pivoted pull handle which also serves as a knocker

power curve (np)
graph showing the relationship of opening forces to closing forces over the operating range of a door closer

power gain (np)
increase in stored energy within in a door closer achieved by the use of a special fixing bracket

power loss (np)
reduction in stored energy in a door closer resulting from a poor configuration of armset

power shoe (np)
pivot locating bracket of overhead door closer which allows limited re-adjustment of the door arm to influence leverage

power size (np)
(see "door closer power size")

powered pedestrian door (np)
door with leaf (or leaves) moved by external energy (see also prEN 12650)

practical differs (np)
(see "effective differs")

presence sensor (np)
(Product specific term - see prEN 12650 & prEN 14637)

pressure-sensitive protection equipment (np)
(Product specific term - see prEN 12650)

privacy lock (np)
lock that is lockable from the inside only

producer (n)
(see "manufacturer")

product (n)
end result of manufacturing process (see also EN 12365)

profile cylinder (np)
mortice cylinder with constant cross-section housing

projecting arm (adj)
having an armset arrangement in which the arms substantially at right angles to the door face when the door leaf is in the closed position

projection (n)
distance from the forend to the most remote part of the bolt when in the thrown position (see also EN 12051)

pull handle (np)
fixed handle used to open or close a door by providing a means to pull on the door leaf by hand

pull-in (n)
(Product specific term - see CEN/TS 131216)

Pullman latch (np)
panic exit latch with curved bearing surfaces to facilitate engagement and release under side load

push back (np)
condition where a deadbolt fails to deadlock when operated against an end load

push button (np)
spring-loaded plunger for finger operation

push pad (np)
one of the accepted operating elements of an emergency exit device (see also EN 179)

push plate / finger plate (np)
decorative or plain plate used to protect the "push" side of a door leaf from marking due to hand contact

push-bar (n)
horizontal bar of a panic exit device (see also EN 1125)

push-pull fastener / push-pull catch
fastener for a door leaf requiring only a push or a pull action to disengage it