# US 2021/0274827 A1 · Juicer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0274827 A1 - Document ID: US20210274827A1 - Status: Published application - Kind: A1 - Application number: 16/899,601 - Filed: 2020-06-12 - Published: 2021-09-09 - Earliest claimed: 2020-03-05 - Assignees: Angel Co., Ltd. - Applicants: Angel Co., Ltd. - Inventors: Mun Hyon Lee; Kwang Hui Lee - Web page: https://patentgrep.com/patent/US20210274827A1 ## CPC - A23N 1/02: combined with disintegrating or cutting - A47J 19/025: {including a pressing screw} - A47J 19/06: Juice presses for vegetables - B02C 18/24: Drives - B02C 23/10: with separator arranged in discharge path of crushing or disintegrating zone - A23N: MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS (machines for cutting straw or fodder A01F29/00; disintegrating, e.g. shredding, B02C; severing, e.g. cutting, splitting, slicing B26B, B26D) - A47J: KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES - B02C: CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN ({household tools and machines for pulverising foodstuffs, e.g. coffee and spice mills A47J42/00; pharmaceutical mortars A61J3/02; mechanical processing of refuse and garbage B03B9/06; dressing mould materials by grinding B22C5/04}; obtaining metallic powder by crushing, grinding or milling B22F9/04; {recovery of plastics by disintegrating B29B17/00; crushing raw materials in starch making C08B30/02; beaters for papermaking D21D1/02; crushing devices specially for transport in mines E21F13/002; slag crushing devices F23J1/00; fuel milling devices in combustion apparatus F23K1/00; household devices for crushing coal F24B15/02; ice disintegrating devices F25C5/02}) ## Abstract The present disclosure relates to a juicer with improved safety, and particularly, includes a motor housing, a drive part including a motor which is provided inside the motor housing, and a roller part which is detachably coupled to extend forward from the motor housing, and is provided therein to be rotatably driven by the drive force transferred from the drive part, in which the drive part and the roller part are attached and detached by the normal and reverse rotation of the motor, thereby greatly improving safety of the juicer. ## Claims ### Claim 1 A juicer with improved safety comprising: a motor housing; a drive part comprising a motor which is provided inside the motor housing; and a roller part which is detachably coupled to the motor housing extend forward therefrom and to be rotatably driven by a driving force which is transferred from the drive part, wherein the drive part and the roller part are mutually attached and detached by normal and reverse rotation of the motor. ### Claim 2 (depends on 1) The juicer of claim 1, wherein the drive part is provided with a sensor operating part, and wherein a roller part housing comprising the roller part comprises a sensor part composed of a sensor which is operated by a change in a distance from the sensor operating part. ### Claim 3 (depends on 1) The juicer of claim 1, wherein the roller part is coupled to the drive part when the motor is rotated normally, and the roller part is separated from the drive part when the motor is rotated reversely. ### Claim 4 (depends on 3) The juicer of claim 3, wherein the motor is automatically rotated normally if a fastening completion signal is received through a controller after the roller part is fastened to the drive part. ### Claim 5 (depends on 3) The juicer of claim 3, wherein the motor is automatically rotated reversely if a juicing completion signal is received through the controller after the driving of the roller part is terminated. ### Claim 6 (depends on 1) The juicer of claim 1, wherein the roller part comprises: a first gear roller which is connected to a rotary shaft of the driver part and gradually decreases in outer diameter in a discharge direction of sludge; and a second gear roller which is connected to a fixed shaft of the drive part and gradually decreases in outer diameter in the discharge direction of the sludge. ### Claim 7 (depends on 1) The juicer of claim 1, further comprising a sludge compressing force generator which generates a compressing force to sludge before a juicing material which is transferred between the outer surface of the roller part and the inner surface of the main housing is finally discharged. ### Claim 8 (depends on 7) The juicer of claim 7, wherein the sludge compressing force generator is provided at the end of the main housing, and is provided to be formed in a rim direction of a stepped part to give a resistance against a transferring force of the sludge, the stepped part being formed to be stepped between the sludge compressing force generator and an extension protruding from the front end of the roller part. ### Claim 9 (depends on 1) The juicer of claim 1, wherein the motor is a normal and reverse rotation motor, and the motor is operated with a smaller output upon normal rotation than that upon reverse rotation.