# US 11,026,502 B1 · Portable electronic device leash and associated use thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,026,502 B1 - Document ID: US11026502B1 - Status: Granted - Kind: B1 - Application number: 16/438,380 - Filed: 2019-06-11 - Granted: 2021-06-08 - Earliest claimed: 2018-06-11 - Applicants: Francisco Erold - Inventors: Francisco Erold - Web page: https://patentgrep.com/patent/US11026502B1 ## CPC - A45F 5/004: {with an automatic spring reel} - A45F 5/02: Fastening articles to the garment - A45F 5/021: {to the belt} - A45F 5/1525: {Holders or carriers for portable computing devices, e.g. laptops, tablets or calculators} - G08B 13/12: by the breaking or disturbance of stretched cords or wires - G08B 13/14: by lifting or attempted removal of hand-portable articles - G08B 21/18: Status alarms (G08B21/02 takes precedence) - H04B 1/385: {Transceivers carried on the body, e.g. in helmets} - H04B 1/3888: Arrangements for carrying or protecting transceivers - A45F 5/1516: {Holders or carriers for portable handheld communication devices, e.g. pagers or smart phones} - A45F: TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - H04B: TRANSMISSION ## Abstract A combined portable electronic leash and mobile phone case includes a mobile phone case, and a portable leash. The leash includes a housing including a centrally registered rotational axis, a spool having a plurality of stationary spokes fixedly attached thereto, a primary spring member anchored to the spokes and wound along a circumferential inner surface of the spool, a central bracket and a secondary spring located therein, a flexible cable having a proximal end anchored to the bracket and wrapped about a circumferential outer surface of the spool, a fastener attached to a distal end of the flexible cable and detachably connected to the mobile phone case, and a mechanism for transmitting an alert signal when the flexible cable is extracted beyond a maximum threshold distance outwardly away from the housing. The alert signal transmitting mechanism is coupled to the housing and the flexible cable. ## Claims ### Claim 1 A combined portable electronic leash and mobile phone case for preventing damage to an existing mobile phone if accidentally dropped, said combined portable electronic leash and mobile phone case comprising: a mobile phone case configured to be attached to an existing mobile phone; a leash detachably connected to said mobile phone case, said leash comprises a housing including a centrally registered rotational axis, a spool having a plurality of spokes fixedly attached thereto, a primary spring member anchored to said spokes and wound along a circumferential inner surface of said spool, a central bracket and a secondary spring located therein, a flexible cable having a proximal end anchored to said central bracket and wrapped about a circumferential outer surface of said spool, a fastener attached to a distal end of said flexible cable and detachably connected to said mobile phone case, and a mechanism for transmitting an alert signal when said flexible cable is extracted beyond a maximum threshold distance outwardly away from said housing; wherein said alert signal transmitting mechanism is coupled to said housing and said flexible cable wherein said alert signal transmitting mechanism comprises: a controller; a transducer communicatively coupled to said controller; a stationary sensor statically affixed to an interior surface of said housing; and a plurality of dynamic sensors statically affixed to a longitudinal length of said flexible cable; wherein said stationary sensor generates and transmits an initiate alert signal to said controller when said flexible cable is extracted beyond said maximum threshold distance; wherein said stationary sensor generates and transmits a terminate alert signal to said controller when said flexible cable is retracted within said maximum threshold distance; wherein said controller, upon receipt of said initiate alert signal and said terminate alert signal, respectively instructs said transducer to initiate and terminate emission of an alarm signal. ### Claim 2 (depends on 1) The combined portable electronic leash and mobile phone case of claim 1, wherein said central bracket comprises: a first slot and a second slot diametrically opposed therefrom such that said central bracket is bifurcated into a first section and a second section spaced apart from said first section; wherein a shape of said first section is a mirror image of a shape of said second section; wherein said primary spring member passes through one of said first slot and said second slot and statically engages one of said first section and said second section so that said primary spring member is tensioned and released as said spool is rotated in opposed rotational directions while said flexible cable is extracted and retracted relative to said housing, respectively. ### Claim 3 (depends on 2) The combined portable electronic leash and mobile phone case of claim 2, wherein said alert signal transmitting mechanism further comprises: a remotely located peripheral electronic device; and a transceiver communicatively coupled to said controller for transmitting said alarm signal to said remotely located peripheral electronic device. ### Claim 4 (depends on 3) The combined portable electronic leash and mobile phone case of claim 3, wherein said housing further comprises: a first half section and a second half section removably coupled thereto; and a plurality of brakes disposed along and extended inwardly from said circumferential inner surface of said spool. ### Claim 5 (depends on 4) The combined portable electronic leash and mobile phone case of claim 4, wherein said first half section comprises: a central end cap including a finger directly abutted within said secondary spring member and aligned along the centrally registered rotational axis; said central end cap being displaced towards said central bracket and being engaged with said brakes. ### Claim 6 (depends on 1) The combined portable electronic leash and mobile phone case of claim 1, wherein said fastener is one of a carabiner and a suction cup. ### Claim 7 A combined portable electronic leash and mobile phone case for preventing damage to an existing mobile phone if accidentally dropped, said combined portable electronic leash and mobile phone case comprising: a mobile phone case configured to be attached to an existing mobile phone; a portable leash configured to be clipped to a user garment and detachably connected to said mobile phone case, said leash comprises a housing including a centrally registered rotational axis, a spool having a plurality of spokes fixedly attached thereto, a primary spring member anchored to said spokes and wound along a circumferential inner surface of said spool, a central bracket and a secondary spring located therein, a flexible cable having a proximal end anchored to said central bracket and wrapped about a circumferential outer surface of said spool, a fastener attached to a distal end of said flexible cable and detachably connected to said mobile phone case, and a mechanism for transmitting an alert signal when said flexible cable is extracted beyond a maximum threshold distance outwardly away from said housing; wherein said alert signal transmitting mechanism is coupled to said housing and said flexible cable; wherein said alert signal transmitting mechanism comprises: a controller; a transducer communicatively coupled to said controller; a stationary sensor statically affixed to an interior surface of said housing; and a plurality of dynamic sensors statically affixed to a longitudinal length of said flexible cable; wherein said stationary sensor generates and transmits an initiate alert signal to said controller when said flexible cable is extracted beyond said maximum threshold distance; wherein said stationary sensor generates and transmits a terminate alert signal to said controller when said flexible cable is retracted within said maximum threshold distance; wherein said controller, upon receipt of said initiate alert signal and said terminate alert signal, respectively instructs said transducer to initiate and terminate emission of an alarm signal. ### Claim 8 (depends on 7) The combined portable electronic leash and mobile phone case of claim 7, wherein said central bracket comprises: a first slot and a second slot diametrically opposed therefrom such that said central bracket is bifurcated into a first section and a second section spaced apart from said first section; wherein a shape of said first section is a mirror image of a shape of said second section; wherein said primary spring member passes through one of said first slot and said second slot and statically engages one of said first section and said second section so that said primary spring member is tensioned and released as said spool is rotated in opposed rotational directions while said flexible cable is extracted and retracted relative to said housing, respectively. ### Claim 9 (depends on 8) The combined portable electronic leash and mobile phone case of claim 8, wherein said alert signal transmitting mechanism further comprises: a remotely located peripheral electronic device; and a transceiver communicatively coupled to said controller for transmitting said alarm signal to said remotely located peripheral electronic device. ### Claim 10 (depends on 9) The combined portable electronic leash and mobile phone case of claim 9, wherein said housing further comprises: a first half section and a second half section removably coupled thereto; and a plurality of brakes disposed along and extended inwardly from said circumferential inner surface of said spool. ### Claim 11 (depends on 10) The combined portable electronic leash and mobile phone case of claim 10, wherein said first half section comprises: a central end cap including a finger directly abutted within said secondary spring member and aligned along the centrally registered rotational axis; said central end cap being displaced towards said central bracket and being engaged with said brakes. ### Claim 12 (depends on 11) The combined portable electronic leash and mobile phone case of claim 11, wherein said fastener is one of a carabiner and a suction cup. ### Claim 13 A method of utilizing a combined portable electronic leash and mobile phone case for preventing damage to an existing mobile phone if accidentally dropped, said method comprising the steps of: providing an existing mobile phone; providing and attaching a mobile phone case to said existing mobile phone; providing a leash comprising a housing including a centrally registered rotational axis, a spool having a plurality of spokes fixedly attached thereto, a primary spring member anchored to said spokes and wound along a circumferential inner surface of said spool, a central bracket and a secondary spring located therein, a flexible cable having a proximal end anchored to said central bracket and wrapped about a circumferential outer surface of said spool, a fastener attached to a distal end of said flexible cable and detachably connected to said mobile phone case, and a mechanism for transmitting an alert signal when said flexible cable is extracted beyond a maximum threshold distance outwardly away from said housing; coupling said alert signal transmitting mechanism to said housing and said flexible cable; clipping said portable leash to said mobile phone case; detachably connecting said portable leash to a user garment; and transmitting an alert signal when said flexible cable is extracted beyond said maximum threshold distance outwardly away from said housing wherein said mechanism for transmitting an alert signal comprises: a controller; a transducer communicatively coupled to said controller; a stationary sensor statically affixed to an interior surface of said housing; and a plurality of dynamic sensors statically affixed to a longitudinal length of said flexible cable; wherein said stationary sensor generates and transmits an initiate alert signal to said controller when said flexible cable is extracted beyond said maximum threshold distance; wherein said stationary sensor generates and transmits a terminate alert signal to said controller when said flexible cable is retracted within said maximum threshold distance; wherein said controller, upon receipt of said initiate alert signal and said terminate alert signal, respectively instructs said transducer to initiate and terminate emission of an alarm signal.