# US 9,435,717 B2 · Device for manual fine metering, and scale > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,435,717 B2 - Document ID: US9435717B2 - Status: Granted - Kind: B2 - Application number: 13/957,130 - Filed: 2013-08-01 - Published: 2014-01-02 - Granted: 2016-09-06 - Earliest claimed: 2011-02-01 - Assignees: Sartorius Lab Instruments GmbH & Co. KG - Applicants: Sartorius Lab Instruments GmbH & Co. KG - Inventors: Michael Laubstein - Web page: https://patentgrep.com/patent/US9435717B2 ## CPC - G01N 1/20: for flowing or falling materials ({G01N1/2035} G01N1/12, G01N1/14 take precedence) - B01L 3/021: {Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids} - G01G 13/02: Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism - G01G 23/00: Auxiliary devices for weighing apparatus - B01L 2200/0657: Pipetting powder - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - B01L: CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE - G01G: WEIGHING (sorting by weighing B07C5/16) ## Abstract A device for manual fine metering of a substance, in particular in powder form, provided with a manual transport tool (24), also having a movable part (32) configured to be induced to vibrate by a motor and wherein the transport tool (24) is held against the movable part (32) in order to induce the transport tool (24) to vibrate. An electronic scale (10) provided with a device of this type enables better manual metering. ## Claims ### Claim 1 An electronic scale, comprising: a scale pan, and a device for manual fine metering of a substance, with a manual transport tool, comprising a vibration exciter and a movable part which is coupled to the vibration exciter and which is configured to vibrate in response to actuation by the vibration exciter, wherein the transport tool vibrates on contact with the vibration exciter. ### Claim 2 (depends on 1) The electronic scale as claimed in claim 1, wherein the device further comprises a switch for switching the vibration exciter on and off. ### Claim 3 (depends on 1) The electronic scale as claimed in claim 1, wherein the device further comprises a sensor which detects the transport tool when positioned in a given proximity to the movable part in order to initiate switching on of the vibration exciter. ### Claim 4 (depends on 3) The electronic scale as claimed in claim 3, wherein the sensor is part of a circuit which is configured such that the vibration exciter is moved for as long as the transport tool is situated close to, touches or deflects, the movable part. ### Claim 5 (depends on 3) The electronic scale as claimed in claim 3, wherein the sensor is a contact sensor which detects contact or deflection of the movable part by the transport tool in order to initiate switching on of the vibration exciter. ### Claim 6 (depends on 1) The electronic scale as claimed in claim 1, wherein the device further comprises a time switch which supplies current to the vibration exciter for a fixed time period following excitation of the vibration exciter. ### Claim 7 (depends on 1) The electronic scale as claimed in claim 1, wherein the movable part is at least one of rod-shaped and exchangeably mounted at the remainder of the device. ### Claim 8 (depends on 1) The electronic scale as claimed in claim 1, wherein at least one of a vibration frequency and a vibration amplitude of the movable part is adjustable. ### Claim 9 (depends on 1) The electronic scale as claimed in claim 1, wherein the device further comprises a housing out of which the movable part projects. ### Claim 10 (depends on 9) The electronic scale as claimed in claim 9, wherein the movable part is elastically mounted to the housing with an elastic mounting that extends around the movable part. ### Claim 11 (depends on 10) The electronic scale as claimed in claim 10, wherein the elastic mounting forms a seal of the housing around the movable part. ### Claim 12 (depends on 1) The electronic scale as claimed in claim 1, wherein the device further comprises a battery powering the device. ### Claim 13 (depends on 1) The electronic scale as claimed in claim 1, wherein the device is positioned above the scale pan. ### Claim 14 (depends on 1) The electronic scale as claimed in claim 1, further comprising a coupling configured to switch off the vibration exciter on reaching a pre-determined mass of the substance being metered. ### Claim 15 (depends on 1) The electronic scale as claimed in claim 1, wherein the device further comprises a base configured to mount said device onto an aperture of a chamber into which the movable part projects. ### Claim 16 (depends on 15) The electronic scale as claimed in claim 15, further comprising a vibration isolation member provided at the base of the device.