Patents by Inventor David P. Christianson

David P. Christianson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11756393
    Abstract: A security device is provided that includes an electronic article surveillance tag that may be configured to resonate to provide a wireless response signal to a deactivator to trigger generation of a deactivation field. Further, the security device may include tamper detection circuitry which may include a tamper sensor configured to generate a tamper signal in response to detecting a tamper event, a deactivation sensor configured to generate a deactivation signal in response to detecting the deactivation field, and a sounder. In this regard, the tamper detection circuitry may be configured to deactivate the tamper detection circuitry in response to receiving the deactivation signal from the deactivation sensor such that receipt of the tamper signal after deactivation of the tamper detection circuitry does not trigger the sounder to emit the alarm.
    Type: Grant
    Filed: January 12, 2022
    Date of Patent: September 12, 2023
    Assignee: EDGE SECURITY PRODUCTS LLC
    Inventors: Ningsheng Zhang, David P. Christianson
  • Publication number: 20220139178
    Abstract: A security device is provided that includes an electronic article surveillance tag that may be configured to resonate to provide a wireless response signal to a deactivator to trigger generation of a deactivation field. Further, the security device may include tamper detection circuitry which may include a tamper sensor configured to generate a tamper signal in response to detecting a tamper event, a deactivation sensor configured to generate a deactivation signal in response to detecting the deactivation field, and a sounder. In this regard, the tamper detection circuitry may be configured to deactivate the tamper detection circuitry in response to receiving the deactivation signal from the deactivation sensor such that receipt of the tamper signal after deactivation of the tamper detection circuitry does not trigger the sounder to emit the alarm.
    Type: Application
    Filed: January 12, 2022
    Publication date: May 5, 2022
    Inventors: Ningsheng Zhang, David P. Christianson
  • Patent number: 11250677
    Abstract: A security device is provided that includes an electronic article surveillance tag that may be configured to resonate to provide a wireless response signal to a deactivator to trigger generation of a deactivation field. Further, the security device may include tamper detection circuitry which may include a tamper sensor configured to generate a tamper signal in response to detecting a tamper event, a deactivation sensor configured to generate a deactivation signal in response to detecting the deactivation field, and a sounder. In this regard, the tamper detection circuitry may be configured to deactivate the tamper detection circuitry in response to receiving the deactivation signal from the deactivation sensor such that receipt of the tamper signal after deactivation of the tamper detection circuitry does not trigger the sounder to emit the alarm.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: February 15, 2022
    Assignee: Edge Security Products, LLC
    Inventors: Ningsheng Zhang, David P. Christianson
  • Publication number: 20200043308
    Abstract: A security device is provided that includes an electronic article surveillance tag that may be configured to resonate to provide a wireless response signal to a deactivator to trigger generation of a deactivation field. Further, the security device may include tamper detection circuitry which may include a tamper sensor configured to generate a tamper signal in response to detecting a tamper event, a deactivation sensor configured to generate a deactivation signal in response to detecting the deactivation field, and a sounder. In this regard, the tamper detection circuitry may be configured to deactivate the tamper detection circuitry in response to receiving the deactivation signal from the deactivation sensor such that receipt of the tamper signal after deactivation of the tamper detection circuitry does not trigger the sounder to emit the alarm.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 6, 2020
    Inventors: Ningsheng Zhang, David P. Christianson
  • Patent number: 9982464
    Abstract: A security device is provided including a security lock configured to retain an object when locked, a receiver configured to receive a security code transmission, and processing circuitry configured to transition the security lock between a locked state and unlock permissive state based on receipt of a security code. The security lock may initially be set to the unlock permissive state. At the first instance in which a security code is received, the processing circuitry may transition the security lock to a key permissive mode in which the security lock transitions to a locked state and in response to a subsequent receipt of the security code the security lock transitions to the unlock permissive state.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: May 29, 2018
    Assignee: Checkpoint Systems, Inc.
    Inventors: Benoit Perreau, David P. Christianson, Donald Matthew Johnson
  • Publication number: 20180038136
    Abstract: A security device is provided including a security lock configured to retain an object when locked, a receiver configured to receive a security code transmission, and processing circuitry configured to transition the security lock between a locked state and unlock permissive state based on receipt of a security code. The security lock may initially be set to the unlock permissive state. At the first instance in which a security code is received, the processing circuitry may transition the security lock to a key permissive mode in which the security lock transitions to a locked state and in response to a subsequent receipt of the security code the security lock transitions to the unlock permissive state.
    Type: Application
    Filed: October 17, 2017
    Publication date: February 8, 2018
    Inventors: Benoit Perreau, David P. Christianson, Donald Matthew Johnson
  • Patent number: 9816297
    Abstract: A security device is provided including a security lock configured to retain an object when locked, a receiver configured to receive a security code transmission, and processing circuitry configured to transition the security lock between a locked state and unlock permissive state based on receipt of a security code. The security lock may initially be set to the unlock permissive state. At the first instance in which a security code is received, the processing circuitry may transition the security lock to a key permissive mode in which the security lock transitions to a locked state and in response to a subsequent receipt of the security code the security lock transitions to the unlock permissive state.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: November 14, 2017
    Assignee: Checkpoint Systems, Inc.
    Inventors: Benoit Perreau, David P. Christianson, Donald Matthew Johnson
  • Publication number: 20170167166
    Abstract: A security device is provided including a security lock configured to retain an object when locked, a receiver configured to receive a security code transmission, and processing circuitry configured to transition the security lock between a locked state and unlock permissive state based on receipt of a security code. The security lock may initially be set to the unlock permissive state. At the first instance in which a security code is received, the processing circuitry may transition the security lock to a key permissive mode in which the security lock transitions to a locked state and in response to a subsequent receipt of the security code the security lock transitions to the unlock permissive state.
    Type: Application
    Filed: December 14, 2015
    Publication date: June 15, 2017
    Inventors: Benoit Perreau, David P. Christianson, Donald Matthew Johnson
  • Patent number: 9576417
    Abstract: According to some example embodiments, systems, apparatus, methods, computer readable media, and computer program products are provided for implementing an item pusher apparatus with channel-based shuttle displacement detection. One example method includes determining a position of a channel engagement member affixed to a shuttle, where the shuttle is movable and configured to at least exert a force on an item to urge the item towards a stopping member. The channel engagement member is configured to at least physically interface with as channel defined such that movement of the shuttle alone a defined movement path causes movement of the channel engagement member in a direction that is nonparallel to the defined movement path in at least one plane. Example systems apparatuses, methods, computer readable media, and computer program products are also provided.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: February 21, 2017
    Assignee: CHECKPOINT SYSTEMS, INC.
    Inventor: David P. Christianson
  • Patent number: 9447611
    Abstract: A security device includes a locking member, a ratchet mechanism, and a plurality of cables. The cables are wrapped around an object. An attachment clip is releasably snap-fitted into the body of the security device. The ratchet mechanism includes a spool and a locking pawl or lever. A key is used to unlock the clip from the housing. An alarm system is contained in the housing and actuates an audible alarm upon certain unauthorized actions occurring. Insertion of the clip into the housing automatically actuates the ratchet mechanism preventing movement of the cable in the unwind direction and activates the alarm system.
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: September 20, 2016
    Assignee: CHECKPOINT SYSTEMS, INC.
    Inventors: Brian V. Conti, Christopher J. Fawcett, David P. Christianson, Mitchell S. Goldstein
  • Patent number: 9299232
    Abstract: A security device may include an attachment assembly configured to affix the security device to an object, a locking assembly configured to lockably secure the attachment assembly and configured to transition between at least a locked state and an unlocked state, a transformer configured to drive an alarm assembly to generate an alarm, and processing circuitry. The transformer may be further configured to operate as a wireless receiver to receive a remotely transmitted wireless signal. The processing circuitry may be configured to monitor an output of the transformer to determine whether the wireless signal has been received via the transformer, and selectively activate the transformer to drive the alarm assembly to generate the alarm.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: March 29, 2016
    Assignee: CHECKPOINT SYSTEMS, INC.
    Inventors: David P. Christianson, Donald Matthew Johnson
  • Patent number: 9293019
    Abstract: A security device may include a lanyard, a lanyard retention lock, and connectivity detection circuitry. The lanyard may include a first conductor and a second conductor that form an open circuit due to an insulator being electrically disposed therebetween. The lanyard retention lock may be configured to retain one or more ends of the lanyard to secure the security device to a protected object. The connectivity detection circuitry may be electrically connected to the first conductor and the second conductor. The connectivity detection circuitry may be configured to detect an occurrence of a closed circuit connection between the first conductor and the second conductor due to, for example, physical damage to the insulator, and may be configured to generate an alarm trigger signal in response to detecting the occurrence of the closed circuit connection between the first conductor and the second conductor.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 22, 2016
    Assignee: CHECKPOINT SYSTEMS, INC.
    Inventors: Benoit Perreau, David P. Christianson
  • Publication number: 20150287299
    Abstract: Anti-theft device and a method of operating and using the device are provided. The security device may include a housing and a disposable tamper strip which is configured to attach to a merchandise item or other article. The tamper strip may include a conductor such that when the conductor is severed, an alarm is sounded. The tamper strip may include tear points which encourage the conductor to be torn, such as when a potential thief attempts to remove the device from the merchandise item or other article.
    Type: Application
    Filed: January 31, 2013
    Publication date: October 8, 2015
    Inventors: Lee H. Eckert, David P. Christianson, Adam Mark Will, Matthew R. Shute, William J. Kozlowski
  • Publication number: 20150179035
    Abstract: A security device may include an attachment assembly configured to affix the security device to an object, a locking assembly configured to lockably secure the attachment assembly and configured to transition between at least a locked state and an unlocked state, a transformer configured to drive an alarm assembly to generate an alarm, and processing circuitry. The transformer may be further configured to operate as a wireless receiver to receive a remotely transmitted wireless signal. The processing circuitry may be configured to monitor an output of the transformer to determine whether the wireless signal has been received via the transformer, and selectively activate the transformer to drive the alarm assembly to generate the alarm.
    Type: Application
    Filed: December 20, 2013
    Publication date: June 25, 2015
    Applicant: Checkpoint Systems, Inc.
    Inventors: David P. CHRISTIANSON, Donald Matthew JOHNSON
  • Publication number: 20140266729
    Abstract: A security device may include a lanyard, a lanyard retention lock, and connectivity detection circuitry. The lanyard may include a first conductor and a second conductor that form an open circuit due to an insulator being electrically disposed therebetween. The lanyard retention lock may be configured to retain one or more ends of the lanyard to secure the security device to a protected object. The connectivity detection circuitry may be electrically connected to the first conductor and the second conductor. The connectivity detection circuitry may be configured to detect an occurrence of a closed circuit connection between the first conductor and the second conductor due to, for example, physical damage to the insulator, and may be configured to generate an alarm trigger signal in response to detecting the occurrence of the closed circuit connection between the first conductor and the second conductor.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: CHECKPOINT SYSTEMS, INC.
    Inventors: Benoit Perreau, David P. Christianson
  • Patent number: 8749387
    Abstract: A merchandise display security system for displaying and protecting an item of merchandise having a movable or removable cover includes a sensor configured to be attached to the cover. The sensor may include a magnet assembly that produces a magnetic field defining a predetermined minimum strength when the sensor is attached to the cover and the cover is closed on the item of merchandise. A transducer detects the presence of the magnetic field, or alternatively, changes in the strength of the magnetic field and generates an electrical signal corresponding to the strength of the magnetic field, for example an output voltage. The transducer communicates the electrical signal to electronics that activate an alarm if the strength of the magnetic field is less than a predetermined minimum strength or greater than a predetermined maximum strength.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: June 10, 2014
    Assignee: InVue Security Products Inc.
    Inventors: Christopher J. Fawcett, David N. Berglund, David P. Christianson
  • Publication number: 20140015674
    Abstract: A merchandise display security system for displaying and protecting an item of merchandise having a movable or removable cover includes a sensor configured to be attached to the cover. The sensor may include a magnet assembly that produces a magnetic field defining a predetermined minimum strength when the sensor is attached to the cover and the cover is closed on the item of merchandise. A transducer detects the presence of the magnetic field, or alternatively, changes in the strength of the magnetic field and generates an electrical signal corresponding to the strength of the magnetic field, for example an output voltage. The transducer communicates the electrical signal to electronics that activate an alarm if the strength of the magnetic field is less than a predetermined minimum strength or greater than a predetermined maximum strength.
    Type: Application
    Filed: September 19, 2013
    Publication date: January 16, 2014
    Applicant: InVue Security Products Inc.
    Inventors: Christopher J. Fawcett, David N. Berglund, David P. Christianson
  • Publication number: 20140008382
    Abstract: According to some example embodiments, systems, apparatus, methods, computer readable media, and computer program products are provided for implementing an item pusher apparatus with channel-based shuttle displacement detection, One example method includes determining a position of a channel engagement member affixed to a shuttle, where the shuttle is movable and configured to at least exert a force on an item to urge the item towards a stopping member. The channel engagement member is configured to at least physically interface with as channel defined such that movement of the shuttle alone, to defined movement path causes movement of the channel engagement member in a direction that is nonparallel to the defined movement path in at least one plane. Example systems apparatuses, methods, computer readable media, and computer program products are also provided.
    Type: Application
    Filed: July 9, 2013
    Publication date: January 9, 2014
    Inventor: David P. Christianson
  • Patent number: 8599022
    Abstract: A security device includes a locking member, a ratchet mechanism, and a plurality of cables. The cables are wrapped around all six sides of a box-like article. An attachment clip is releasably snap-fitted into the body of the security device and locked therein by a magnetically attractable member. The ratchet mechanism includes a spool and a locking pawl or lever. A top wall of the housing or locking clip has a key receiving recess for positioning the key for unlocking the clip from the housing and releasing the spool from the ratchet mechanism. The housing has a rotatable handle for manually rotating the internal spool to further tighten the cable about the article after the cable slack is taken up by an internal spring. An alarm system is contained in the housing and actuates an audible alarm upon certain unauthorized actions occurring. The spool is biased by the internal spring to automatically wind the cable onto the spool after the clip has been unlocked from the housing.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: December 3, 2013
    Inventors: Brian V. Conti, Christopher J. Fawcett, David P. Christianson, Mitchell S. Goldstein
  • Patent number: 8564438
    Abstract: A merchandise display security system for displaying and protecting an item of merchandise having a movable or removable cover includes a sensor configured to be attached to the cover. The sensor may include a magnet assembly that produces a magnetic field defining a predetermined minimum strength when the sensor is attached to the cover and the cover is closed on the item of merchandise. A transducer detects the presence of the magnetic field, or alternatively, changes in the strength of the magnetic field and generates an electrical signal corresponding to the strength of the magnetic field, for example an output voltage. The transducer communicates the electrical signal to electronics that activate an alarm if the strength of the magnetic field is less than a predetermined minimum strength or greater than a predetermined maximum strength.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: October 22, 2013
    Assignee: InVue Security Products Inc.
    Inventors: Christopher J. Fawcett, David N. Berglund, David P. Christianson