# US 9,517,370 B2 · Distribution of fire suppressing agent in a stovetop fire suppressor and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,517,370 B2 - Document ID: US9517370B2 - Status: Granted - Kind: B2 - Application number: 14/246,024 - Filed: 2014-04-04 - Published: 2015-08-27 - Granted: 2016-12-13 - Earliest claimed: 2014-02-21 - Assignees: WilliamsRDM, Inc. - Applicants: Donald W Murray - Inventors: Donald W Murray - Web page: https://patentgrep.com/patent/US9517370B2 ## CPC - A62C 3/006: {for kitchens or stoves} - A62C 35/08: Containers destroyed or opened by bursting charge - A62C 37/12: with fusible links - A62C 37/14: with frangible vessels - F42B 3/26: Arrangements for mounting initiators; Accessories therefor, e.g. tools - A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10) - F42B: EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION (explosive compositions C06B; fuzes F42C; blasting F42D) ## Abstract An automatic stovetop fire suppressor providing a gradual release of a fire suppressing agent in a desired distribution pattern and method of gradual and spatial agent release are provided herein. A plastic cone shaped lid seals on the bottom of a can and forms a closed container. The closed container is filled with a fire suppressing agent. An initiator charge breaks a designed breaking point of a reduced horizontal cross sectional area when fuse activated. The bottom lid drops down exposing a radial opening. Fire suppressing agent flows out of the radial opening, suppressing a stovetop fire with minimal or no splashing of cooking oil. An initiator housing is affixed to a top wall of the can and serves as the welding point for securing the plastic lid. A travel limiting member attached to the bottom lid catches on a shoulder of the initiator housing to limit the radial opening height. ## Claims ### Claim 1 An automatic stovetop fire suppressor, the device comprising: a can comprising a top wall and a cylindrical sidewall; a plastic cone shaped bottom lid secured to a bottom of the can and forming a closed container; a fire suppressing agent housed in the closed container; an initiator housing secured to the top wall of the can; and an ultrasonic weld securing the cone shaped bottom lid to the initiator housing. ### Claim 2 (depends on 1) The device according to claim 1, further comprising: a fuse extending from an initiator charge housed in the initiator housing to an outer side of the cone shaped bottom lid. ### Claim 3 (depends on 2) The device according to claim 2, further comprising: an attaching member integral to the bottom lid and ultrasonically welded to the initiator housing; and a designed breaking point of reduced horizontal cross sectional area in the attaching member. ### Claim 4 (depends on 1) The device according to claim 1, further comprising: at least one travel limiting member integral to the bottom lid catching the bottom lid upon activation of the stovetop fire suppressor and limiting a drop height of the lid. ### Claim 5 (depends on 4) The device according to claim 4, wherein: the at least one travel limiting member is at least three mechanical fingers. ### Claim 6 (depends on 5) The device according to claim 5, further comprising: a catching surface on the initiator housing upon which mechanical fingers catch upon activation of the stovetop fire suppressor. ### Claim 7 (depends on 5) The device according to claim 5, further comprising: a catching surface on an inner side of a container sidewall upon which mechanical fingers catch upon activation of the stovetop fire suppressor. ### Claim 8 (depends on 4) The device according to claim 4, further comprising: the drop height is 0.20 inches. ### Claim 9 (depends on 1) The device according to claim 1, further comprising a seal between a bottom of a container side wall and a circumference of the bottom lid. ### Claim 10 (depends on 9) The device according to claim 9, wherein: the seal is an o-ring. ### Claim 11 (depends on 10) The device according to claim 10, wherein: the o-ring seats in a groove in a circumference of the bottom lid. ### Claim 12 (depends on 1) The device according to claim 1, further comprising: a circumferential channel in the bottom lid sealed to a bottom edge of a container side wall. ### Claim 13 (depends on 1) The device according to claim 1, further comprising: a 45 degree angle between a horizontal and the cone shaped bottom lid. ### Claim 14 (depends on 1) The device according to claim 1, further comprising: a four inch diameter of the cylindrical sidewall. ### Claim 15 An automatic stovetop fire suppressor, the device comprising: a can comprising a top wall and a cylindrical sidewall; a plastic cone shaped bottom lid secured to a bottom of the can and forming a closed container; a fire suppressing agent housed in the closed container; an initiator housing secured to the top wall of the can; internal threads at a bottom of the initiator housing; an attaching cylinder integral to the cone shaped bottom lid; external threads in the attaching cylinder; wherein, the internal threads mate with the external threads, forming the closed container. ### Claim 16 (depends on 15) The device according to claim 15, further comprising: a designed breaking point of reduced horizontal cross sectional area in the attaching cylinder below the external threads. ### Claim 17 (depends on 15) The device according to claim 15, wherein: the threads at the bottom of the initiator housing are external; and the threads in the attaching cylinder are internal. ### Claim 18 (depends on 15) The device according to claim 15, further comprising: internal threads in a top of the initiator housing: an insert disposed through the top wall; external threads in a bottom of the insert; shoulders of the insert disposed on an outer side of the top wall; and wherein, the internal threads in the top of the initiator housing mate with external threads in the bottom of the insert. ### Claim 19 (depends on 18) The device according to claim 18, wherein: a mount for the automatic stovetop fire suppressor is mechanically connected to the insert.