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公开(公告)号：US11915869B2
公开(公告)日：2024-02-27
申请号：US17881690
申请日：2022-08-05
发明人： Randall Shaffer
CPC分类号： H01F7/18 , H01F7/064 , H02M3/335 , H02M3/33523
摘要： A latch system includes a releasably secured latch or keeper and a solenoid assembly. The solenoid assembly has a solenoid driver coupled to a power supply, a switching circuit connected with the solenoid driver, and a function generator to selectively adjust a frequency of a pick current output from the power supply and provided to the solenoid driver. The frequency is adjusted until the pick current induces a resulting vibration of said latch system sufficient to free a preloaded latch or keeper. The adjusted frequency may be a target frequency or a range of frequencies. Also included may be a preload sensor. When a preload is sensed, the frequency may be adjusted by the function generator until the pick current induces a resulting vibration of said latch system sufficient to free a preloaded latch or keeper.
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公开(公告)号：US20230407678A1
公开(公告)日：2023-12-21
申请号：US18461846
申请日：2023-09-06
发明人： Ryan M. Sims , Baruch Spence , James Griffin
IPC分类号： E05B47/00
CPC分类号： E05B47/0047 , E05B47/0002 , E05B47/0012 , E05B15/025
摘要： An actuator controlled electric strike for operating in conjunction with a latch of a lockset. The strike comprises a keeper support bracket movable between first and second positions. When the bracket is in the first position a keeper is held in either a locked or unlocked position, and when the bracket is in the second position the keeper is movable to the other position. An actuating mechanism is operatively connected to the bracket and is configured to allow the bracket to move between the first and second positions. First and second biasing mechanisms apply a net force to the bracket. The first biasing mechanism applies a first force to the bracket in the first direction, and the second biasing mechanism applies a second force to the bracket in the second direction. When the bracket is in the first position, the net force of the biasing member is approximately zero.
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公开(公告)号：US11658588B2
公开(公告)日：2023-05-23
申请号：US16802919
申请日：2020-02-27
CPC分类号： H02N2/183 , E05B13/108 , E05B47/0673 , E05D7/00 , E05D11/00 , E06B7/28 , E05B1/0007 , E05B47/0011 , E05B2047/0062 , E05Y2201/246 , E05Y2201/43 , E05Y2400/61 , E05Y2400/616 , E05Y2800/67 , E05Y2900/132 , H02N2/18 , Y10T70/5199 , Y10T292/57 , Y10T292/705
摘要： A piezoelectric energy harvester system for collecting kinetic energy is provided, wherein the kinetic energy is converted into electrical energy, and wherein at least a portion of the converted electrical energy is utilized to operate a load. The system comprises an energy input portion and an energy harvesting portion. The energy input portion includes an input member configured to be actionable by an outside force. The energy harvesting portion includes a capture member, a sprocket portion, and a piezoelectric energy harvester. The capture member is adapted for receiving mechanical input from the input member. The sprocket portion is disposed for movement with the capture member. The sprocket portion includes at least one radially disposed sprocket actuator configured for making contact with and exciting the piezoelectric energy harvester. The piezoelectric energy harvester is excited by the contact to produce the kinetic energy.
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公开(公告)号：US11619071B2
公开(公告)日：2023-04-04
申请号：US16710861
申请日：2019-12-11
摘要： A door latch system includes an exit device having a housing mounted to an unsecured side of a door. A latch assembly is mounted in the housing and includes a latch for releasably securing the door in a door frame. An actuating assembly includes a driving member. A push bar is configured to be received within the housing. Relative movement between the push bar and base plate so as to reduce the distance between the push bar and base plate moves the driving member and latch to release the door from the door frame. A dashpot is connected to the driving member and configured to allow movement of the driving member when the push bar is manually depressed but to resist movement of the driving member when a secure side of the door experiences a high velocity impact. A method of resisting unwanted unlatching of the latch is also disclosed.
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公开(公告)号：US11549283B2
公开(公告)日：2023-01-10
申请号：US16253888
申请日：2019-01-22
发明人： Scott P. Sullivan
IPC分类号： E05B47/02 , E05B9/08 , E05B9/02 , E05B47/06 , E05B65/00 , E05B65/06 , E05B65/08 , E05B47/00 , E05B63/00
摘要： A lock unit of an electric locking device comprises a lock housing, a keeper, an inhibitor and a latch bolt. A second end of the latch bolt is positioned outwardly and cooperates with the inhibitor when in a locked orientation. The keeper includes a keeper shaft having a shaft axis of rotation, wherein said keeper is rotatable about said keeper shaft between first and second rotational positions, wherein the keeper is movable between first and second directional positions relative to the lock housing, wherein the movement between the first and second directional positions is generally linear, wherein when the keeper is held in the first rotational position and the first directional position by the inhibitor, the door is secured to the door frame, and wherein when the keeper is in the second rotational position and the second directional position, the door is allowed to move away from said door frame.
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公开(公告)号：US11408204B2
公开(公告)日：2022-08-09
申请号：US16397667
申请日：2019-04-29
发明人： Joshua T. Peabody , Dan Van Dusen , John Brennan
摘要： An electric door strike assembly includes a housing and at least one keeper arm. The housing has an opening for admission and retraction of a door latch. The at least one keeper arm has a latch portion and is mounted on the housing. The at least one keeper arm is movable between a closed position, where the opening is occluded by the latch portion, and an open position, where the door latch may be released from the opening. The latch portion may include a bifurcated member having inside and outside legs arranged in spaced parallel relation so as to define a gap therebetween. The gap is configured to receive a latch plate of an interlocking latch mechanism when the at least one keeper arm is in the closed position.
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公开(公告)号：US11299914B2
公开(公告)日：2022-04-12
申请号：US16549660
申请日：2019-08-23
摘要： A latch dogging assembly comprises an electromagnet and an actuator mounted on a bracket. A guide slide is pivotally mounted on the bracket with a lead block coupled to the guide slide. A guide pin rides along an inner surface of the bracket causing the guide slide to pivot. A pawl is slidably engaged with the guide slide. A guide link includes a post. An armature is mounted to the panic bar and the post engages the pawl. When the actuator is energized to move the lead block, the pawl engages the post to pivot the armature and thereby cause the panic bar to move from the extended position to the depressed position. When the electromagnet is energized the armature is magnetically held preventing reverse pivoting of the guide link. A method for fully retracting a door latch is also provided.
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公开(公告)号：US11203890B2
公开(公告)日：2021-12-21
申请号：US15097571
申请日：2016-04-13
发明人： Brett L. Davis , Randall Shaffer
摘要： An energizable electromagnet of a door locking system is affixed to the door or the door frame for electromagnetically attracting an armature affixed to the other. A power control circuit is configured to selectively energize the electromagnet using a pulse-width modulated current cycle wherein two levels of magnetic force may be selectively applied to the system. A door position sensor is configured to provide a first communication signal to the power control circuit when the door is in a closed position. A second communication signal is provided when the door is not in the closed position. The electromagnet is energized at the lower level of magnetic force when the power control circuit receives the first communication signal and at the higher level of magnetic force only when an unauthorized attempt to open the door is initiated.
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公开(公告)号：US10965163B2
公开(公告)日：2021-03-30
申请号：US16775667
申请日：2020-01-29
摘要： What is presented is a power-transfer system that provides resonant inductive power from a first object to a second object, which is adjacent to the first object. The system includes a first transformer portion that is positioned on the first object and having a first core portion. The first core portion includes a transmit unit configured to transfer an electromagnetic field to the second transformer portion. The first core portion also includes first circuitry that allows the transmit unit to transfer the electromagnetic field. The second transformer portion is positioned on the second object and has a second core portion. The second core portion includes a receiver unit configured to receive the electromagnetic field. The second core portion also includes second circuitry that allows the transmit unit to transfer the electromagnetic field.
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公开(公告)号：US20210043351A1
公开(公告)日：2021-02-11
申请号：US17078135
申请日：2020-10-23
发明人： Randall Shaffer , Brett L. Davis
摘要： A constant-current controller that supplies a constant-current to a solenoid driver for use with an electromechanical device. The controller comprises a PCB containing a constant-current control circuit. The circuit comprises a GaNFET primary switch and a secondary switch. The PCB is integrated with and made a part of the solenoid driver. A standard electromechanical device may be converted to a constant-current controlled electromechanical device by exchanging the solenoid driver.
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