Cylinder Lock Tumbler Decoder Patents (Class 33/540)
  • Patent number: 11208830
    Abstract: An apparatus and method for digital decoding and deciphering a lock cylinder pin configuration, such as for a Kwikset or a Smart Key lock is disclosed. The digital decoder includes a light source placed inside of the keyhole that eliminates glare from the face of the lock and improves the decoding process. A digital camera is configured to provide an optical view of an interior of the lock cylinder to detect the pin settings for each of a plurality of lock tumbler pins carried by the lock cylinder. The digital camera is configured to provide a live feed displayed on a video screen or recorded for later analysis.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: December 28, 2021
    Inventors: Keith Capehart, Brian Capehart
  • Patent number: 11199026
    Abstract: A magnetic anti-theft device, includes: a control circuit, in connection with a plurality of magnetic sensors and a control unit; the plurality of magnetic sensors, allowing different magnetic induction strengths to be preset; and an unlock piece, configured with a plurality of magnetic elements corresponding to the magnetic induction strengths of the plurality of magnetic sensors, whereby, when the correct unlock piece is placed on the magnetic sensors, the plurality of magnetic sensors will induct correct magnetic forces, the control unit is driven to release a monitoring state after interpretation of the control circuit; if the induction is incorrect, the control unit is driven to form a warning action after the interpretation of the control circuit so as to achieve an anti-theft effect and increase safety effectively probably because the magnetic force of the magnetic element of the unlock piece is too small or too large.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: December 14, 2021
    Inventor: Te-Yu Chen
  • Patent number: 9422743
    Abstract: In order to determine the particular cut possessed by a tumbler of a mechanical lock, the tumbler is stimulated with mechanical energy. The vibrational response of the tumbler is detected, and the detected response is used in determining which cut of the plurality of possible cuts the tumbler possesses. The cut of a lock tumbler is defined by its shape and/or size. For example, in the case of a pin-tumbler lock, the cut of a pin is defined by its length. Different cuts of tumbler will therefore exhibit different vibrational responses to stimulation by mechanical energy, and these different vibrational responses can be used to determine which cut the tumbler possesses, for example by comparing with the vibrational responses of real or modeled tumblers with known cuts. The response may be detected while the tumbler is being stimulated, and the responses to different frequencies of stimulation may be detected and processed.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: August 23, 2016
    Inventor: Jeremy Nedwell
  • Patent number: 9366056
    Abstract: In order to determine the particular cut possessed by a tumbler of a mechanical lock, the tumbler is stimulated with mechanical energy. The vibrational response of the tumbler is detected, and the detected response is used in determining which of the possible cuts the tumbler possesses. The cut of a lock tumbler is defined by its shape and/or size. For example, in the case of a pin tumbler lock, the cut of a pin is defined by its length. Different cuts of tumbler will therefore exhibit different vibrational responses to stimulation by mechanical energy, and these different vibrational responses can be used to determine which cut the tumbler possesses, for example by comparing with the vibrational responses of real or modeled tumblers with known cuts. The tumbler may be stimulated by an impulse of mechanical energy, and, after stimulating the tumbler, the vibrational response of the tumbler may be detected over a period of time.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: June 14, 2016
    Inventor: Jeremy Nedwell
  • Patent number: 9133646
    Abstract: A lock decoder with a light source has a plate and at least one pick lever that is adapted at one end for insertion in a lock to be decoded and adapted at its other end by provision of a pointer. The pointer moves over the plate as the pick lever is manipulated within a lock and this side of the plate bears indications comprising a range of key bitting codes for each pin position within the lock that may be individually indicated by the pointer. The plate is adapted to permit light to shine through at least predetermined parts of it to illuminate the indications and the light source is secured to the decoder so that it shines through the plate. Preferably, the light source comprises a fluorescent or phosphorescent backing-plate that is secured over the other side of the plate.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: September 15, 2015
    Assignee: UAP LIMITED
    Inventor: David Jennings
  • Publication number: 20150040413
    Abstract: In order to determine the particular cut possessed by a tumbler of a mechanical lock, the tumbler is stimulated with mechanical energy. The vibrational response of the tumbler is detected, and the detected response is used in determining which of the possible cuts the tumbler possesses. The cut of a lock tumbler is defined by its shape and/or size. For example, in the case of a pin tumbler lock, the cut of a pin is defined by its length. Different cuts of tumbler will herefore exhibit different vibrational responses to stimulation by mechanical energy, and these different vibrational responses can be used to determine which cut the tumbler possesses, for example by comparing with the vibrational responses of real or modeled tumblers with known cuts. The tumbler may be stimulated by an impulse of mechanical energy, and, after stimulating the tumbler, the vibrational response of the tumbler may be detected over a period of time.
    Type: Application
    Filed: February 15, 2013
    Publication date: February 12, 2015
    Inventor: Jeremy Nedwell
  • Patent number: 8001699
    Abstract: An electronic device for impressioning a lock comprises a housing having a key decoder secured to the housing and a connector for connection to electronic circuitry. A key decoder portion extends from the housing for insertion into a keyway. A groove extends along a surface of the key decoder. An insulated conductor is positioned in the groove. An exposed portion serves as a reader of wafers positions in the keyway as the key decoder slides through the keyway. An electrical measuring device is secured to the housing and includes a slidable member including the reader, both of which are connected through a sensor interface included in the housing. When the reader engages and disengages with a wafer, the measuring device transmits electrical signals to the electronic circuitry which mathematically calculates a cut in a key blank for each wafer using stored programs for fitting a key to the lock.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: August 23, 2011
    Inventor: Stephen Randall
  • Patent number: 7958647
    Abstract: A system for controlling access to a secure area includes a lock and an electronic access device for controlling access to a secure area. The lock includes pins for locking and unlocking the lock. The access device communicates with the pins for electrically measuring movement of the pins. The access device stores an unlock pin code for the predetermined position of the pins for unlocking the lock. The electronic access device electrically measures pin movement by a key. A control device electrically communicates with the electronic access device for determining when a lock compromising technique has occurred to identify a lock tamper event.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: June 14, 2011
    Assignee: Honeywell International Inc.
    Inventor: Nathan Gerner
  • Patent number: 7941934
    Abstract: A system for controlling access to a secure area includes a lock and an electronic access device for controlling access to a secure area. The lock includes pins for locking and unlocking the lock. The access device communicates with the pins for electrically measuring movement of the pins. The access device stores an unlock pin code for the predetermined position of the pins for unlocking the lock. The electronic access device electrically measures pin movement by a key and determines a key code for the key from the pin movement. A control device electrically communicates with the electronic access device for identifying the key code and determining when the key code matches the unlock pin code.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: May 17, 2011
    Assignee: Honeywell International Inc.
    Inventors: Nathan Gerner, Paul Popowski, Jeff Zingsheim
  • Publication number: 20110067254
    Abstract: An electronic device for impressioning a lock comprises a housing having a key decoder secured to the housing and a connector for connection to electronic circuitry. A key decoder portion extends from the housing for insertion into a keyway. A groove extends along a surface of the key decoder. An insulated conductor is positioned in the groove. An exposed portion serves as a reader of wafers positions in the keyway as the key decoder slides through the keyway. An electrical measuring device is secured to the housing and includes a slidable member including the reader, both of which are connected through a sensor interface included in the housing.
    Type: Application
    Filed: September 23, 2009
    Publication date: March 24, 2011
    Inventor: Stephen Randall
  • Patent number: 7895763
    Abstract: The objective of the invention is to allow the user to decipher the cuts (aka. depths) on a key from the lock without disassembling the lock. The current wafer lock readers on the market rely on a sensitive touch to operate and/or do not give the exact depths to recreate a key. Our wafer lock “reader” will give the exact depth of a cut, coming to a definite stop at the reading position for each cut on the key.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: March 1, 2011
    Inventor: Keith Daniel Capehart
  • Publication number: 20100236085
    Abstract: The objective of the invention is to allow the user to decipher the cuts (aka. depths) on a key from the lock without disassembling the lock. The current wafer lock readers on the market rely on a sensitive touch to operate and/or do not give the exact depths to recreate a key. Our wafer lock “reader” will give the exact depth of a cut, coming to a definite stop at the reading position for each cut on the key.
    Type: Application
    Filed: March 19, 2009
    Publication date: September 23, 2010
    Inventor: Keith Daniel Capehart
  • Patent number: 7614158
    Abstract: The decoding of a lock, such as a pin tumbler type of lock, is completed by utilizing a method that includes the insertion of a key blank or other material with one or more reference indicators on a modifiable surface, into a keyway of the lock. The key blank is inserted until a stopping resistance is detected. Such a resistance occurs when a pin of the lock reaches a shear line position. After such a position is reached a marking is made on the key blank and a measurement is made. The measurement is compared to markings on a novel decoding template to determine the depth of a cut that should be made on an uncut key.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: November 10, 2009
    Inventor: Michael Thomas Uttaro
  • Patent number: 6722172
    Abstract: An apparatus for decoding locks having a series of parallel spring-urged slideable members includes a probe device having the general contour of a key expected to fit the lock. The probe device has a shank portion having straight upper and lower edges. A series of thin force sensors supplied with electrical current is attached to at least the upper edge of the shank in a spaced apart relationship corresponding to the spacing of the slideable members. When the probe device is inserted into the lock, the spring associated with each slideable member exerts a force upon the corresponding sensor which is proportionate to the requisite travel distance of the slideable member. Such force is converted by the sensor to an appropriate electrical output which is routed to an electronic monitor that displays the ascertained travel distance for each slideable member.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: April 20, 2004
    Inventors: Albert Pinkhasov, Pinkhas Pinkhasov
  • Patent number: 6382007
    Abstract: A system for decoding locks having a sequence of spring-urged sliding members such as tumbler pins or wafers includes a probe device having the general contour of a key having a head portion and a straight shank fabricated of electrically insulative material and terminating in a tip portion having an oblique ramp surface. A series of spaced apart electrical conductors embedded within the shank in parallel relationship extend from the head portion to the ramp surface where they emerge as electrical contacts. An electrical circuit which includes an electronic monitoring and display apparatus detects when a given sliding member touches a most distant electrical contact, thereby representing a travel distance. The travel distance is correlated with a particular pin or wafer to produce the key code for the lock.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: May 7, 2002
    Inventor: Jesse M. Wright
  • Patent number: 6148652
    Abstract: A lock picking tool for a high security four-track disc tumbler lock, the tool probing all four tracks simultaneously.
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: November 21, 2000
    Inventors: Mark A. Magini, Michael K. Bradlee
  • Patent number: 6134928
    Abstract: A method and apparatus for decoding locks having a guide member, an alignment member, a reader, and a recording medium, which a guide member is inserted into a lock to open the lock to receive an alignment member which aligns the tumbler members of a lock, thereby permitting a reader to be inserted into the lock, and withdrawn therefrom to cause a displacement of a pivotally connected reader arm which records an image of the lock profile on a recording medium.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: October 24, 2000
    Inventor: Samuel Kang
  • Patent number: 6082159
    Abstract: A compact lock pick assembly constructed and configured to be carried in a shirt pocket comprising the combination of a lock pick tool that is retractable into a generally tubular handle and a tension tool mounted on the tubular handle to act as a pocket clip is disclosed.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: July 4, 2000
    Inventor: Ernest F. Larsen
  • Patent number: 5325691
    Abstract: The present invention relates to lock picking and decoding tools and a method of using the same. The lock decoding tools comprise a torquing tool, a picking tool, and decoding tools. The method comprises using the torquing tool to bias the locking bar out of a notch in the inner wall of the cylinder housing, picking the tumblers using the picking tool, turning the cylinder lock slightly so as to permit the torquing tool to be removed, turning the lock cylinder to the "ON" position, and decoding the cylinder lock using the decoding tools.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: July 5, 1994
    Assignee: HSL Marketing, Inc.
    Inventor: Donald J. Embry
  • Patent number: 5224365
    Abstract: A side bar lock decoder has a pair of guide plates laminarly arranged between a pair of side plates. Key portions of the plates have notches spaced for alignment with the lock wafers. Narrow passages between the guide plates extend from each of the notches to the edges of the base portions of the plates at approximately normal fingertip positions when the base portions are hand held. Wires slidably disposed in each of the passages extend from an outer end of each of the notches beyond the grip edges. One end of the wires abuts one of the wafers when the wafers and the notches are aligned. Springs, bias each of the wires toward a threshold reference position within the notches. Plungers, one connected to each of the wires, extend beyond the grip edges, are independently biased away from their respective edges by the springs. One or more housings secured to the laminar plates have at least one chamber therein for guiding the movement of each of the plungers during manipulation.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: July 6, 1993
    Inventor: Jerry L. Dobbs
  • Patent number: 5172578
    Abstract: An apparatus for determining lengths of locking elements in locks including a key head and wires maintained on the key head and extendable into the lock cylinder for measuring lengths of the lock pins. The distance that the wires will go into the depth of lock can be used to determine the depth of the furrows or the cuts of the needed key. The advantage of this invention is that one can duplicate a key which has been lost, without damaging the lock, or moving it out of the door. In addition to that this mechanism is also used as a "lock-picker" in order that one can lock or unlock a door when the keys have been lost. The invention operates in two different ways and for two different purposes. The first one is to duplicate a key which has been lost. The second one is to lock or unlock a door for different reasons, e.g. when the key has been lost, or when it is still inside the car or the house while the door is still locked.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: December 22, 1992
    Inventor: Spiridon A. Bitzios
  • Patent number: 5133202
    Abstract: A decoder is provided for disk tumble locks which is electrically rather than mechanically operated. A plurality of separate keys each has a blade sufficiently long to extend through all of the disks in the lock. At least one cut is provided in the blade of each key. The depth of the cut in each key is different, the cut of each key being coordinated to a different depth of disk from among the known alternative disk depths for the given tuumbler lock to be decoded. The base surface of each cut contains discrete electrical contact connected by a discrete conductor to a point on the key which is externally accessible when the key is fully inserted into the lock. Each contact is positioned on its key so that, when the key is inserted into the lock keyway, an electrically conductive circuit is completed by the disk if the depth of the disk corresponds to or exceeds the depth of the cut.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: July 28, 1992
    Inventor: Maurice Grant
  • Patent number: 4869085
    Abstract: A cylinder lock and key includes one or more lateral ribs extending from a flat key and formed of a shape memory material. Auxiliary lock pins arranged in a cylinder core read the shape of the lateral ribs of the key and enable the lock to be opened only when the memory material of the ribs responds to the application of energy.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: September 26, 1989
    Inventor: Peter E. Meissner
  • Patent number: 4680870
    Abstract: A device for decoding a cylinder lock of the wafer type includes a main portion having a shank similar to an uncut blank for a key for a particular lock and a thin feeler which slides along one side of the portion resembling a key blank. A notch is defined in the portion resembling a key blank, to receive a tumbler of the lock in a normal locking position for that tumbler while the feeler is placed into contact with the tumbler. Indicia are provided to indicate the position of the feeler with respect to the notch, in terms of nominal cut depths to which corresponding portions of a key must be cut to produce a key which will operate the lock. In one embodiment the feeler includes a sloping forward face which contacts a tumbler. In another embodiment of the invention the feeler includes a series of steps, each step corresponding to a particular nominal depth of cut for a position of a key to fit that tumbler of the lock into which the feeler is able to fit.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: July 21, 1987
    Inventor: T. Doyle McConnell
  • Patent number: 4667494
    Abstract: A tool set and a method of opening and decoding a side bar lock employing wafer type tumblers. A spring compressor tool configured for insertion into the lock mechanism keyway raises all the tumblers to a radially outward position and compresses the springs that normally bias the tumblers inwardly. A spring retainer tool inserted into the keyway with the spring compressor tool engages the tumbler springs to retain the springs in a compressed position but frees the tumblers for movement. A tumbler adjusting tool is inserted to grasp the tumblers, and move the tumblers to a position where the lock mechanism can be opened. A decoding tool is inserted to measure the radial position of each tumbler and provide a number which can be used to make a new key. A dust cover holding tool is provided to hold open the spring actuated dust cover.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: May 26, 1987
    Inventor: Douglas W. Joosten
  • Patent number: 4638567
    Abstract: A device for precisely measuring the depths of cuts of a Mercedes Benz key at the critical depth locations which determine the unique characteristics of each such key. In a first embodiment for measuring a single shelf key, the key is measured by a projecting probe of a circular gauge, by moving the key via a slide plate. The slide plate is incremented by a rack-and-pinion arrangement, the rack forming part of one side edge surface of the slide plate. A stop member cooperates with cut-outs formed in the other side edge surface of the slide plate for holding the slide plate, and therefore the key, at each of the critical locations where depth of cut is to be measured. In the second embodiment, a double shelf key may be measured by the use of a pair of oppositely disposed and aligned probe tips of a pair of circular measuring gauges.
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: January 27, 1987
    Inventor: Garrett J. Leversee
  • Patent number: 4535546
    Abstract: Locksmith tool apparatus determines the length of a locking element in a lock by engaging a locking element inside a lock and by moving the element to compress a compression spring to a known minimum length and by measuring the distance moved. By subtracting the distance the element is moved from known dimensions, the length of the locking element is determined.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: August 20, 1985
    Inventor: Rodney D. Smith