# US 2013/0153698 A1 · Electric Grinder > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0153698 A1 - Document ID: US20130153698A1 - Status: Published application - Kind: A1 - Application number: 13/816,451 - Filed: 2011-08-18 - Published: 2013-06-20 - Earliest claimed: 2010-08-19 - Assignees: Ningbo Garron Housewares Co., Ltd. - Inventors: Guoping Zhang - Web page: https://patentgrep.com/patent/US20130153698A1 ## CPC - A47J 42/06: mechanically driven - A47J 42/08: Adjusting mechanisms - A47J 42/40: relating to discharge, receiving container or the like; Bag clamps, e.g. with means for actuating electric switches - A47J 42/46: Driving mechanisms; Coupling to drives - A47J: KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES ## Abstract An electric grinder includes a bottle, a housing, a grinding assembly and a driving device mounted inside the housing, wherein, the housing detachably connected to the bottle, the grinding assembly has a female grinding head and a male grinding head, the driving device has an output engaged to a central driving rod, and the central driving rod passes through the grinding cavity and drives the male grinding head. As the constancy overall volume of the grinder, the storage amount of condiments is relatively larger, the electric grinder has well-arranged and aesthetically-designed components and is reliable in use, with uniform electric grinding and uniform discharging. ## Claims ### Claim 1 An electric grinder comprising: a bottle for holding condiments to be ground; a housing detachably connected to the bottle; a grinding assembly mounted inside the housing for grinding the condiments; a driving device mounted inside the housing to drive the grinding assembly; wherein, the grinding assembly comprises a female grinding head and a male grinding head, the female grinding head has a circular shape with a center and a grinding cavity in the center, the male grinding head is mounted in the grinding cavity of the female grinding head, and a grinding gap is formed between the female grinding head and the male grinding head and communicates with the bottle, the male grinding head has an external conic wall and the grinding cavity has an internal conic wall, the external conic wall and the internal conic wall have matching grinding teeth; the driving device and the grinding assembly are both located above the bottle, the driving device has an output engaged to a central driving rod, and the central driving rod passes through the grinding cavity and drives the male grinding head. ### Claim 2 (depends on 1) The electric grinder of claim 1, wherein the housing has a seat with a bottom for receiving the driving device, and the seat has a passage for connecting the grinding gap to the bottle. ### Claim 3 (depends on 2) The electric grinder of claim 2, further comprising a guiding plate, connected to the seat and forming a passage for the condiments, for separating the driving device from the condiments passing through the passage. ### Claim 4 (depends on 2) The electric grinder of claim 2, wherein the housing further comprises a lower sleeve and an upper sleeve mounted on top of the lower sleeve, and the bottom of the seat is placed in the lower sleeve. ### Claim 5 (depends on 2) The electric grinder of claim 2, further comprising a grinding base with a through hole mounted on top of the seat and a cover plate with a plurality of discharging openings mounted inside the housing and above the grinding base, wherein the female grinding head is placed inside the through hole of the grinding base. ### Claim 6 (depends on 1) The electric grinder of claim 1, wherein the central driving rod connects to a sweeping wheel located beneath the grinding assembly, and the sweeping wheel has a plurality of radially-distributed driving levers. ### Claim 7 (depends on 1) The electric grinder of claim 1, wherein the driving device comprises a motor, a power supply and a gear set engaged with the output of the motor, and the gear set has a driving gear connected to the central driving rod. ### Claim 8 (depends on 1) The electric grinder of claim 1, further comprising a pressure buffer spring, with two ends resisting against the male grinding head and the seat, through which the central driving rod passes and an adjusting knob mounted on top of the central driving rod for pressing the male grinding head. ### Claim 9 (depends on 8) The electric grinder of claim 8, wherein the housing has a top and a cap is attached to the top of the housing, a pair of magnets is mounted on the top of the adjusting knob and the inner of the cap. ### Claim 10 An electric grinder, comprising: a housing with a lower sleeve and an upper sleeve, the upper sleeve being mounted on top of the lower sleeve; a grinding head assembly mounted in the housing for grinding condiments; a seat, having a top, placed inside the lower sleeve; an upper base connected to the top the seat; a grinding base mounted on the top of the seat; a motor placed inside the seat; a transmitting device connected to the motor; wherein the grinding head assembly is mounted inside the grinding base, and the grinding head assembly is driven by the motor to grind the condiments; a guiding plate connected to the seat for guiding the condiments; and a sweeping wheel rotatably mounted above the upper base for maintaining flow of the condiments through the grinding head assembly. ### Claim 11 (depends on 10) The electric grinder of claim 10, further comprising a control circuit system connected to the motor, the control circuit system has a rolling ball switch, a first electric spring, a first electric spring leaf, a second electric spring, a second electric spring leaf and batteries, which are connected in series via wires. ### Claim 12 (depends on 11) The electric grinder of claim 11, further comprising an output shaft connected to the motor, wherein the transmitting device comprises a master gear connected to the output shaft of the motor an intermediate gear set connected to the master gear and a driving gear which is connected to a central driving rod. ### Claim 13 (depends on 12) The electric grinder of claim 12, wherein the intermediate gear set is mounted on a gear base via a gear shaft, the gear base is fixed to the seat via a plurality of bolts, and the intermediate gear set connects to the master gear and the driving gear. ### Claim 14 (depends on 13) The electric grinder of claim 13, wherein the grinding head assembly comprises a female grinding head with a grinding cavity and a periphery and a plurality of protruded strips formed on the periphery and a male grinding head rotatably mounted inside the grinding cavity of the female grinding head, the grinding base has an inner surface with a plurality of sliding grooves, and each protruded strip can slide into a sliding groove when the female grinding head is mounted on the grinding base. ### Claim 15 (depends on 14) The electric grinder of claim 14, wherein the central driving rod passes through a central hole on the upper base and rotatably engages the upper base via a shaft sleeve, both the sweeping wheel and the male grinding head are mounted on the central driving rod. ### Claim 16 (depends on 15) The electric grinder of claim 15, wherein the sweeping wheel is mounted on a spring, and the male grinding head is mounted on a pressure buffer spring. ### Claim 17 (depends on 16) The electric grinder of claim 16, further comprising a cover plate with a discharging opening on top of the grinding base, an adjusting knob, connected to the central driving rod and pressed against the male grinding head, for adjusting a grinding gap between the female grinding head and the male grinding head. ### Claim 18 (depends on 17) The electric grinder of claim 17, further comprising a cap covering a discharging opening of the housing, and the discharging opening of the housing is in communication with a bottle. ### Claim 19 (depends on 18) The electric grinder of claim 18, wherein the bottle is screwed on the seat.