Matches 1 - 50 out of 85 1 2 >
Match Document Document Title
7552608 Lock, key blank, and key of a hierarchical lock system  
A lock system includes keys, key blanks, keyways, and lock cylinders, and the keys or key blanks have opposite sides formed with grooves for cooperating with a conforming keyway. More particularly,...
7484392 Cylinder lock and key  
A cylinder lock provided with a thick key including an elongated base having two surfaces. A serrated wall extends from one surface of the base. A key groove is formed by the serrated wall. A rib...
7412860 Key blank and key  
A key blank or key has a rectangular parallel metal shaped blade which has side edges formed with grooves for cooperating with a complementary shaped keyway; the sides of the blank having a portion...
7218202 Biometric key  
A biometric key having a key body incorporating a biometric sensor. There is also provided a receptor body for engagement with the biometric key, wherein the reader has a slot for retention of the...
6912881 Security reversible key and locking system  
The security reversible key with an assigned cylinder (Z) has a blocking groove (BN) with a coded blocking depth (B 1 , B 2 , B 3 ), which runs parallel to the axis of the key (x) from the tip of...
6425274 Rekeyable padlock with a lock cylinder having an enlarged viewing slot  
This invention pertains to the lock cylinder of a rekeyable padlock. According to a preferred embodiment of the present invention, a rekeyable padlock is provided with a lock cylinder formed...
6308543 Key plate and method for manufacturing the same  
A key plate includes a key plate body that extends longitudinally and has a grip portion and a keyhole insertion portion connected to the grip portion. The keyhole insertion portion includes a flat...
6237379 Motor-assisted electromechanical lock system  
A lock system has a housing, a barrel rotatable in the housing, tumblers radially displaceable in the barrel and housing between an unlocked position permitting the barrel to rotate in the housing...
6145357 Flat key for a tumbler-containing locking cylinder of a lock apparatus  
A flat key for a tumbler-containing locking cylinder of a locking apparatus, with a key grip and, attached thereto, a key shank for locking grooves cut into the shank towards the end surface, the...
6134929 Cylinder lock and key combination with a guiding profile ridge in the lock  
A cylinder lock and key combination, wherein the lock comprises a side profile ridge (60) disposed in the key slot (53) and having a relatively shallow recess (61), in which a projection (55) on a...
6119496 Keys for high security cylinder lock systems  
A blank for use in fabricating a key for a cylinder lock having a camming projection extending outwardly from a first side of the blade portion of the blank and a recess in the opposite side of the...
6109081 Key and cylinder lock system  
A dual cam, reversible key includes first and second patterns of notches in first and second edges of the shank of the key on a common side of the key shank of the key, providing a dual cam key....
6105404 Squiggle keys and cylinder locks for squiggle keys  
Improved squiggle keys and cylinder locks include a squiggle key groove formed along a first broad surface of the squiggle key and a plurality of bittings formed along a second opposite broad...
6094954 Key assembly with aperture, slot and insert  
A key and insert assembly is designed for the identification of keys or key blanks. The key is provided with a slot through the key head which is oriented in a plane parallel with the face of the...
6023954 Keys for cylinder locks  
A Key with a blade portion which is bitted for actuating the tumbler pins of a cylinder lock has improved cross-sectional strength despite deep cut bittings which extend well into the thickness of...
5970761 Lock system with key trapping  
A novel lock system utilizes a cylinder lock and a companion key with a projection extending from one side thereof to improve security. The cylinder lock comprises a shell, a core which is...
5964112 Locking cylinder and locking apparatus  
A locking cylinder (1) with a cylindrical housing (2) of which the core bore (7) receives a cylindrical core (8) having a key channel (9) with core pins provided in the cylindrical core and housing...
5943890 Cylinder lock and key assembly and hierarchical system therefor  
A lock mechanism has at least one tumbler pin having one or more slots in the tip surface of the pin and a key blade which is formed with a projection extending from the surface of the bitting...
5823030 Cylinder lock system  
A key having profile features which include a shaped indentation on a first side of the blade and an aligned projection on the opposite side of the blade cooperates with a cylinder lock with...
5809816 Cylinder lock and key combination including a profiled key  
A cylinder lock and key combination, where the key (20) has an undercut profile groove (24) at one side surface (22) thereof and, in the key slot (13), the lock key plug has a corresponding profile...
5797287 Flat key  
A key has a flat key body having a blade extending along a longitudinal insert axis and having a front edge formed with transversely directed bitting, an opposite longitudinally extending back...
5582050 Cylinder lock-key-combination, a key therefor and a method of producing the key from a key blank  
A cylinder lock-key-combination includes a lock cylinder, a cylinder housing (2) and a cylinder plug (3) provided with a key slot (3a) and a row of tumblers (5). The tumblers (5) and associated key...
5531084 Key for rotary plug and cylinder lock, and method of forming the key  
A difficult-to-duplicate key for operating a rotatable plug and cylinder lock has an imaginary center axis that extends along the length of the key at a location situated between opposed,...
5513509 Key for use with 5-pin and 6-pin door locks  
A key 20 is formed with a blade 22 having six bits 30, 32, 34, 36, 38 and 40 formed along one edge of the blade. A shoulder 42 is formed on a trailing end 28 of blade 22 and is positioned to...
5490405 Cylinder lock--key--combination  
A disc cylinder lock mechanism comprises a cylinder housing, an inner cylinder turnable inside the cylinder housing, and a stack of discs inside the inner cylinder. The discs define respective key...
5488843 Safety, insurance and alarm mechanical lock  
A safety, insurance and alarm mechanical lock contains an external lock portion, a multicylinder type lock cylinder portion, and a lock body portion engaging with the lock cylinder portion. The...
5485735 Key operated rotary plug and cylinder lock  
A key operated rotatable plug and cylinder define pin-receiving holes arranged in first, second and third rows that extend in first, second and third planes, respectively that radiate from a common...
5438857 Lock cylinder and key as well as key blank with matched security device  
A lock cylinder with key, in which the cylinder has a rotor and a stator with radial tumbler pins and the key has depressions corresponding to the tumbler pins. At least one tumbler pin functions...
5372024 Lock-cylinder key  
The invention relates a lock-cylinder key (S) having bit steps (6) protruding on the wide sides (4) of its key shank (1) for the positioning of the lock-cylinder tumblers (19). In order to obtain a...
5349830 Lock system  
A lock system has lock cylinders (5) in which the rotor (9) is lodged as usual in the cylinder housing, (11) as well as lock cylinders (6) in which the rotor (10) is rotated through 180° about its...
5287712 Locking arrangement consisting of key and lock cylinder  
The locking arrangement consists of key a and lock cylinder with a guide cross section provided on the rear of the key shank and with profiled longitudinal ribs arranged on the broad face for entry...
5272895 High security key and cylinder lock assembly  
A cylinder lock assembly includes a core, a key plug mounted for rotation in the core, and a key. The key plug is formed to include a keyway and a plurality of tumbler pin bores opening into the...
5265455 Cylinder lock and key set with reversible key  
A reversible double-bitted key is reconfigured to permit a cylinder lock and key set to fit in the standard architecture of certain American automobiles. Preferably, the maximum required diameter...
5201203 Flat plastic key with shortened key alignment groove  
A flat plastic key suitable for replacing a corresponding metal key having a key alignment groove disposed in a side of the key is configured to actuate a rotary cylinder lock having a rectangular...
5182929 Method of providing a universal keyway lock and plug therefor  
A method and replacement plug for cylinder locks converts locks having special keyways requiring correspondingly warded key blanks into a universal keyway lock that can be properly operated by a...
5181406 Locking device consisting of key and locking cylinder  
A locking device consisting of key (2) and locking cylinder (1), in particular for the actuation of electric microswitches on keyboards, telephone or the like, has a locking cylinder housing (5)...
5029459 Flat plastic key with rigid torque transfer insert  
A flat plastic key is designed to actuate a rotary cylinder lock having lock tumblers, an elongated key receptable for receiving the key and a rotary lock face including a rectangular lock entrance...
4977767 High-security flat key and lock therefor  
A flat key has a blade formed with bitting along at least one of its edges, with a pair of relatively shallow, outwardly open, and generally parallel but spaced grooves formed in at least one of...
4964288 Locking device and reversible key  
A locking device comprises a lock cylinder and a reversible flat key having indentations located on opposite broad faces of the key for the arrangement of tumbler pins, and having a rib associated...
4825672 Key for flat tumblers  
A double bitted key is provided for locks of the type using flat tumblers. There is a double bit for each tumbler. Each double bit corrrectly sets its complementary tumbler. Each bit includes a...
4805428 Lock and key  
A lock and key combination includes profile shapes extending along the lateral faces of the key which extend at an angle relative to the key spine to make acquisition of replacement key copies more...
4732022 Key for an improved twisting tumbler cylinder lock  
A key according to the invention includes one or more bits which are offset forwardly or rearwardly of a corresponding tumbler axis of a twisting tumbler lock with dual locking function having...
4653298 Lock-key system  
A key for a lock-key system, particularly for a hierarchal lock system, is provided which has an invariable basic profile and a variation or system profile in which the invariable basic profile is...
4620429 Cycle lock  
A cycle lock having at least one plurality of disc-like tumblers loosely mounted on a shaft parallel with the axis of rotation of the key rotated lock cylinder. Each tumbler has a two spaced lobes...
4617813 Lock-picking tool and method of use thereof  
A picking tool adapted to open a cylinder lock of the axial pin tumbler type having its tumblers arranged in a coplanar configuration, includes a planar torquing core insertable into the lock...
4393673 Cylinder lock  
A cylinder lock with a cylinder core rotatable in a housing, a side bar in a recess extending axially in a peripheral part of the cylinder core and biassed outwardly to engage a recess in the...
4368629 Lock system  
A lock system has a master-only lock which can be opened only by a master key and a subordinate lock which can be opened by a subordinate key and a master key. The master-key slot of the...
4356713 Cylinder lock and key  
The combination of a cylinder lock and key, wherein the key comprises a blade with a longitudinally extending edge portion at one side of the blade provided with a coded surface for engaging the...
4289002 Key for a cylinder lock and method for making same  
Recesses in a key are formed by a cutter having a shape corresponding to the shape of the tumbler pin to be associated with the recess. The recesses to receive perpendicularly extending pins are...
4270372 Key and lock system  
A key for a safety lock having two grooves on each flat side with pairs of identical grooves being located symmetrically opposed about the central axis of the key profile. The grooves (2,3) and the...
Matches 1 - 50 out of 85 1 2 >