# US 2025/0147601 A1 · System and method of assembling an electromagnetic spring back rapid click mouse > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0147601 A1 - Document ID: US20250147601A1 - Status: Published application - Kind: A1 - Application number: 18/386,439 - Filed: 2023-11-02 - Published: 2025-05-08 - Earliest claimed: 2023-11-02 - Assignees: Dell Products L.P. - Applicants: Dell Products, LP - Inventors: Deeder M. Aurongzeb; Weijong Sheu; Peng Lip Goh - Web page: https://patentgrep.com/patent/US20250147601A1 ## CPC - G06F 3/03543: {Mice or pucks (G06F3/03541 takes precedence)} - H01F 7/0242: {Magnetic drives, magnetic coupling devices} - H01F 7/064: {Circuit arrangements for actuating electromagnets (circuit arrangements for obtaining special operating characteristics H01F7/18; driving circuits for electromagnets making use of a switching regulator H01H47/325)} - H01F 41/06: Coil winding - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract An electromagnetic spring back rapid click mouse for an information handling system comprising a key plate forming a portion of a top cover for receiving downward force by a user of a key plate click actuation, a permanent magnet operatively coupled to a bottom surface of the key plate and an electromagnetic spring back system electromagnet operatively coupled to a mouse printed circuit board (PCB) where the electromagnet includes a solenoid coil wrapped around a ferromagnetic bar that is magnetized when the solenoid coil receives a current pulse to repel the permanent magnet and urge the permanent magnet and the key plate to rebound to a neutral position after the key plate click actuation. A key plate plunger of key plate switch on the mouse PCB receives the key plate click actuation and a mouse controller detects the key plate click actuation from the key switch via the mouse PCB. ## Claims ### Claim 1 An electromagnetic spring back rapid click mouse for an information handling system comprising: a key plate forming a portion of a top cover of the electromagnetic spring back rapid click mouse for receiving downward force by a user of a key plate click actuation; an electromagnetic spring back system permanent magnet operatively coupled to a bottom surface of the key plate and having a first polarity; the electromagnetic spring back system permanent magnet situated above an electromagnetic spring back system electromagnet operatively coupled to a mouse printed circuit board (PCB) where the electromagnetic spring back system electromagnet includes a ferromagnetic material that is magnetized to the first polarity when the electromagnetic spring back system electromagnet is charged, where the ferromagnetic material is magnetized upon detection of a key plate actuation at the mouse PCB to repel the electromagnetic spring back system permanent magnet and urge the electromagnetic spring back system permanent magnet and the key plate to rebound to a neutral position after the key plate click actuation; the key plate plunger to urge a switch plunger to switch a key plate switch on the mouse PCB upon the key plate click actuation on the key plate; and a mouse controller for detecting a switch signal from the key plate switch via the mouse PCB to register the key plate click actuation and magnetize the ferromagnetic material. ### Claim 2 (depends on 1) The electromagnetic spring back rapid click mouse of claim 1 further comprising: the electromagnetic spring back system electromagnet includes a solenoid coil to receive a current pulse to magnetize a ferromagnetic bar of the ferromagnetic material to the first polarity when the electromagnetic spring back system electromagnet is charged. ### Claim 3 (depends on 1) The electromagnetic spring back rapid click mouse of claim 1 further comprising: the ferromagnetic material of electromagnetic spring back system electromagnet is not magnetized when the electromagnetic spring back system electromagnet is not charged and attracts the electromagnetic spring back system permanent magnet downward with the key plate plunger and to minimize a distance between the switch plunger and the key plate plunger for key plate click actuation. ### Claim 4 (depends on 3) The electromagnetic spring back rapid click mouse of claim 3, wherein an attractive force between the electromagnetic spring back system permanent magnet and the electromagnetic spring back system electromagnet that is uncharged is less than a magnitude of downward force on the switch plunger required to cause the switch plunger to switch the key plate switch on the mouse PCB upon the key plate click actuation on the key plate. ### Claim 5 (depends on 1) The electromagnetic spring back rapid click mouse of claim 1 further comprising: the mouse PCB operatively coupled to a wireless adapter for establishing a wireless link with the information handling system to transmit the key plate click actuation. ### Claim 6 (depends on 1) The electromagnetic spring back rapid click mouse of claim 1 further comprising: the mouse PCB operatively coupled to a network interface device for establishing a wired link with the information handling system to transmit the key plate click actuation. ### Claim 7 (depends on 1) The electromagnetic spring back rapid click mouse of claim 1 further comprising: the mouse key plate operatively coupled to a mouse top cover via a hinge such that the mouse key plate can move downward with respect to the mouse top cover upon downward pressure by a user's finger. ### Claim 8 (depends on 1) The electromagnetic spring back rapid click mouse of claim 1 further comprising: a mouse controller sending a current pulse to a solenoid coil of the electromagnetic spring back system electromagnet to magnetize the ferromagnetic material therein upon detecting the switch signal from the key plate switch via the mouse PCB to register the key plate click actuation. ### Claim 9 A method of assembling an electromagnetic spring back rapid click mouse for an information handling system comprising: forming a key plate as a portion of a top cover of the electromagnetic spring back rapid click mouse for receiving downward force by a user of a key plate click actuation and including a key plate plunger extending from the key plate; forming a switch plunger of a key plate switch, where the key plate switch is operatively coupled to a mouse printed circuit board (PCB) in a bottom cover of the electromagnetic spring back rapid click mouse; operatively coupling a permanent magnet to a bottom surface of the key plate, the permanent magnet having a first polarity; situating an electromagnetic spring back system electromagnet operatively coupled to the mouse PCB within a magnetic field of the permanent magnet; forming a solenoid coil wrapped around a ferromagnetic bar for the electromagnetic spring back system electromagnet, where the solenoid coil is operatively coupled to receive a current pulse from the mouse PCB upon the key plate click actuation detected at the mouse PCB and where the ferromagnetic bar is unmagnetized with no current pulse in the solenoid coil to attract the permanent magnet and the ferromagnetic bar is magnetized with the current pulse in the solenoid coil to repel the permanent magnet to rebound the key plate after the key plate click actuation; and a mouse controller operatively coupled to detect actuation of the key plate switch during the key plate click actuation. ### Claim 10 (depends on 9) The method of claim 9, wherein an attractive force between the permanent magnet and the electromagnetic spring back system electromagnet where the ferromagnetic bar is unmagnetized is less than a magnitude of downward force on the switch plunger required to switch the key plate switch on the mouse PCB. ### Claim 11 (depends on 9) The method of claim 9 further comprising: operatively coupling the mouse PCB to a wireless adapter for establishing a wireless link with the information handling system to transmit the key plate click actuation from the mouse controller. ### Claim 12 (depends on 9) The method of claim 9 further comprising: operatively coupling the mouse PCB to a network interface device for establishing a wired link with the information handling system to transmit the key plate click actuation from the mouse controller. ### Claim 13 (depends on 9) The method of claim 9 further comprising: disposing the key plate plunger extending from the bottom side of the key plate above the switch plunger of the key plate switch located on a first location of the mouse PCB in a housing of the electromagnetic spring back rapid click mouse; and disposing the permanent magnet above the electromagnetic spring back system electromagnet on a second location of the mouse PCB in the housing of the electromagnetic spring back rapid click mouse. ### Claim 14 (depends on 9) The method of claim 9 further comprising: the mouse controller operatively coupled to the mouse PCB to detect actuation of the key plate switch during the key plate click actuation and transmit the key plate click actuation to the information handling system. ### Claim 15 An electromagnetic spring back rapid click mouse for an information handling system comprising: a key plate forming a portion of a top cover of the electromagnetic spring back rapid click mouse for receiving downward force by a user of a key plate click actuation; a permanent magnet operatively coupled to a bottom surface of the key plate and having a first polarity; the permanent magnet situated above an electromagnetic spring back system electromagnet operatively coupled to a mouse printed circuit board (PCB) where the electromagnetic spring back system electromagnet includes a solenoid coil wrapped around a ferromagnetic bar that is magnetized to the first polarity upon detection of a key plate actuation at the mouse PCB when the solenoid coil receives a current pulse from the mouse PCB to repel the permanent magnet and urge the permanent magnet and the key plate to rebound to a neutral position after the key plate click actuation; the key plate plunger to urge a switch plunger to switch a key plate switch on the mouse PCB upon the key plate click actuation; and a mouse controller for detecting a switch signal from the key plate switch via the mouse PCB to register the key plate click actuation. ### Claim 16 (depends on 15) The electromagnetic spring back rapid click mouse of claim 15 further comprising: the mouse controller for ceasing application of the electrical pulse to the solenoid of the electromagnetic spring back system electromagnet to demagnetize the ferromagnetic bar upon receiving indication of the key plate click actuation from the key plate switch to generate an attractive magnetic force between the permanent magnet and the ferromagnetic bar when the key plate is in the neutral position. ### Claim 17 (depends on 16) The electromagnetic spring back rapid click mouse of claim 16, wherein the attractive magnetic force between the permanent magnet and ferromagnetic bar that is demagnetized is less than a magnitude of downward force required on the switch plunger to switch the key plate switch on the mouse PCB to avoid inadvertent recording of the key plate click actuation. ### Claim 18 (depends on 15) The electromagnetic spring back rapid click mouse of claim 15 further comprising: the ferromagnetic bar of electromagnetic spring back system attracts the permanent magnet when the ferromagnetic bar of electromagnetic spring back system is demagnetized with no current in the solenoid coil to urge downward the key plate plunger of the key plate to minimize a distance between the switch plunger and the key plate plunger to switch the key switch during the key plate click actuation. ### Claim 19 (depends on 15) The electromagnetic spring back rapid click mouse of claim 15 further comprising: the mouse PCB operatively coupled to a network interface device for establishing a wired link with the information handling system. ### Claim 20 (depends on 15) The electromagnetic spring back rapid click mouse of claim 15 further comprising: the mouse PCB operatively coupled to a wireless adapter for establishing a wireless link with the information handling system.