# US 9,517,399 B1 · Portable golf impact practice mat > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,517,399 B1 - Document ID: US9517399B1 - Status: Granted - Kind: B1 - Application number: 14/737,391 - Filed: 2015-06-11 - Published: 2016-12-15 - Granted: 2016-12-13 - Earliest claimed: 2015-06-11 - Applicants: Seung Won Lee - Inventors: Seung Won Lee - Web page: https://patentgrep.com/patent/US9517399B1 ## CPC - A63B 69/3661: {Mats for golf practice, e.g. mats having a simulated turf, a practice tee or a green area} - A63B 71/0622: {Visual, audio or audio-visual systems for entertaining, instructing or motivating the user} - G06T 7/20: Analysis of motion (motion estimation for coding, decoding, compressing or decompressing digital video signals H04N19/43, H04N19/51) - A63B 2208/0204: Standing on the feet - A63B 2210/50: Size reducing arrangements for stowing or transport - A63B 2220/16: Angular positions - A63B 2220/30: Speed - A63B 2220/801: Contact switches - A63B 2220/833: Sensors arranged on the exercise apparatus or sports implement - A63B 2225/74: with powered illuminating means, e.g. lights - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ## Abstract The portable golf impact practice mat is a golf practice mat that provides visual indicators to inform of three extremely important impact conditions using a digital display, a signal generating unit and a plurality of LED (light emitting diode). One of them indicates the swing path in reference to how the golf club head moves toward the target. Another detects and indicates if the club head hits the golf mat in front of the ball also known as a “fat shot”. Lastly, the third displays a club head speed upon impact. The present invention is designed to be used by attaching to the general golf practice mats widely found in public golf driving ranges or personal golf practice mats. The present invention is compact, folds in half and fits in one-hand providing portability. ## Claims ### Claim 1 A portable golf impact practice mat, comprising: an impact area for placing a golf ball to be hit; a first sensor bar and a second sensor bar for detecting swing path and swing speed of a golf club head that is hitting the golf ball, where the first sensor bar and the second sensor bar are placed on or close to two sides of the impact area and is configured in a way that when a golf ball and pass the second sensor bar in sequence; at least one pressure sensor is placed beneath the impact area for detecting whether a fat shot occurred; a control box that connects to the first sensor bar, the second sensor bar and the at least one pressure sensor, where the control box calculates and displays the swing speed of the golf club head and indicates whether a fat shot occurred; and wherein the impact area further comprises plurality of perforated holes with LED lights that identifies the swing path of the golf club head. ### Claim 2 (depends on 1) The portable golf impact practice mat according to claim 1, wherein the first sensor bar and the second sensor bar are parallel to each other and each comprises a series of wire-activating switches connected consecutively in a line, and each wire-activating switch has a wire that extends above the impact area. ### Claim 3 (depends on 2) The portable golf impact practice mat according to claim 2, wherein the wire activates the wire-activating switch when the wire is contacted by the golf club head. ### Claim 4 (depends on 3) The portable golf impact practice mat according to claim 3, wherein the swing path of the golf club head is detected based on the activation of wire-activating switch or switches on the first sensor bar and the second sensor bar. ### Claim 5 (depends on 3) The portable golf impact practice mat according to claim 3, wherein each wire-activating switch is coupled with a LED light that emits light through on of the plurality of perforated holes when the wire-activating switch is being activated. ### Claim 6 (depends on 1) The portable golf impact practice mat according to claim 1, wherein the control box further comprises a speed indicator, a fat shot indicator, a power switch and a reset button. ### Claim 7 (depends on 1) The portable golf impact practice mat according to claim 1, wherein the first sensor bar, the second sensor bar, the at least one pressure sensor and the control box are powered by batteries in the control box or through a separate adapter. ### Claim 8 (depends on 1) The portable golf impact practice mat according to claim 1, further comprises at least one clamp for clamping the portable golf impact practice mat to another golf mat. ### Claim 9 (depends on 3) The portable golf impact practice mat according to claim 3, wherein the swing speed of a golf club head is calculated based on a distance between the first sensor bar and the second sensor bar, and based on a time between activation of wire-activating switch or switches on the first sensor bar and the activation of wire-activating switch or switches on the second sensor bar. ### Claim 10 A portable golf impact practice mat, comprising: an impact area for placing a golf ball to be hit; a first sensor bar and a second sensor bar for detecting swing path and swing speed of a golf club head that is hitting the golf ball, where the first sensor bar and the second sensor bar are placed on or close to two sides of the impact area and is configured in a way that when a golf club swings at the golf ball, the golf club head will pass the first sensor bar, pass or hit the golf ball and pass the second sensor bar in sequence; wherein the first sensor bar and the second sensor bar are parallel to each other and each comprises a series of wire-activating switches connected consecutively in a line, and each wire-activating switch is coupled to a LED light and has a wire that extends above the impact area, wherein each wire-activating switch is activated when its wire is in contact with the golf club head and its LED light will emit light through a perforated hole on the impact area; wherein the swing path of the golf club head is identified by LED lights based on which wire-activating switches are being activated in the first sensor bar and the second sensor bar; at least one pressure sensor is placed beneath the impact area for detecting whether a fat shot occurred; and a control box that connects to the first sensor bar, the second sensor bar and the at least one pressure sensor, where the control box calculates and displays the swing speed of the golf club head through a speed indicator and indicates whether a fat shot occurred through a fat shot indicator. ### Claim 11 (depends on 10) The portable golf impact practice mat according to claim 10, wherein the control box further comprises a power switch and a reset button. ### Claim 12 (depends on 10) The portable golf impact practice mat according to claim 10, wherein the first sensor bar, the second sensor bar, the at least one pressure sensor and the control box are powered by batteries in the control box. ### Claim 13 (depends on 10) The portable golf impact practice mat according to claim 10, further comprises at least one clamp for clamping the portable golf impact practice mat to another golf mat. ### Claim 14 (depends on 10) The portable golf impact practice mat according to claim 10, wherein the swing speed of a golf club head is calculated based on a distance between the first sensor bar and the second sensor bar, and based on a time between activation of wire-activating switch or switches on the first sensor bar and the activation of wire-activating switch or switches on the second sensor bar. ### Claim 15 (depends on 10) The portable golf impact practice mat according to claim 10, further comprises a foldable golf mat that connects to the impact area through a hinge and is configured in a way that the foldable golf mat can be folded to the impact area or unfolded from the impact area. ### Claim 16 A portable golf impact practice mat, comprising: an impact area for placing a golf ball to be hit; a first sensor bar and a second sensor bar for detecting swing path and swing speed of a golf club head that is hitting the golf ball, where the first sensor bar and the second sensor bar are placed on two sides of the impact area and is configured in a way that when a golf club swings at the golf ball, the golf club head will pass the first sensor bar, pass or hit the golf ball and pass the second sensor bar in sequence; wherein the first sensor bar and the second sensor bar are parallel to each other and each comprises a series of wire-activating switches connected consecutively in a line, and each wire-activating switch is coupled to a LED light and has a wire that extends above the impact area; wherein each wire-activating switch is activated when its wire is in contact with the golf club head and its LED light will emit light through a perforated hole on the impact area; wherein the swing path of the golf club head is identified by LED lights based on which wire-activating switches are being activated in the first sensor bar and the second sensor bar; at least one pressure sensor is placed beneath the impact area for detecting whether a fat shot occurred; a control box that calculates and displays the swing speed of the golf club head and indicates whether a fat shot occurred; and a foldable golf mat that connects to the impact area through a hinge and is configured in a way that the foldable golf mat can be folded to the impact area or unfolded from the impact area. ### Claim 17 (depends on 16) The portable golf impact practice mat according to claim 16, wherein the control box further comprises a power switch and a reset button. ### Claim 18 (depends on 16) The portable golf impact practice mat according to claim 16, wherein the first sensor bar, the second sensor bar, the at least one pressure sensor and the control box are powered by batteries in the control box. ### Claim 19 (depends on 16) The portable golf impact practice mat according to claim 16, further comprises at least one clamp for clamping the portable golf impact practice mat to a general golf mat. ### Claim 20 (depends on 16) The portable golf impact practice mat according to claim 16, wherein the swing speed of a golf club head is calculated based on a distance between the first sensor bar and the second sensor bar, and based on a time between activation of wire-activating switch or switches on the first sensor bar and the activation of wire-activating switch or switches on the second sensor bar.