# US 12,216,107 B2 · Concrete workability meter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,216,107 B2 - Document ID: US12216107B2 - Status: Granted - Kind: B2 - Application number: 17/806,855 - Filed: 2022-06-14 - Published: 2022-12-15 - Granted: 2025-02-04 - Earliest claimed: 2021-06-14 - Assignees: Minnich Manufacturing Company, Inc. - Applicants: MINNICH MANUFACTURING COMPANY, inc. - Inventors: Paul Jawarski; Allen Bragg; Tobin Pokrzywa; Jeff McDaniel - Web page: https://patentgrep.com/patent/US12216107B2 ## CPC - G01N 33/383: {Concrete or cement} - 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) ## Abstract A concrete workability meter having concrete vibrator portion and frame assembly, wherein the concrete vibrator portion may be selectively decoupled from the frame assembly to permit relative movement there between. ## Claims ### Claim 1 Concrete workability meter assembly comprising: a testing assembly including a concrete testing instrument operatively connected to a vibrator; and a frame assembly configured to slidingly support the testing assembly, wherein the frame assembly includes a slider plate configured to permit relative sliding between the slider plate and the vibrator. ### Claim 2 (depends on 1) The assembly according to claim 1, wherein the vibrator includes a variable speed motor and is controllable to manipulate the testing instrument. ### Claim 3 (depends on 1) The assembly according to claim 1 further comprising a shaft extending between the vibrator and testing instrument, the shaft configured to transfer vibrating energy from vibrator to the testing instrument. ### Claim 4 (depends on 1) The assembly according to claim 1, wherein the testing instrument is a kelly ball. ### Claim 5 (depends on 1) The assembly according to claim 1, wherein the slider plate includes a central bore includes at least one notch configured to receive a correspondingly shaped at least one tab portion positioned vertically along the vibrator, the at least one tab portion and notch configured to provide alignment and guided movement between the vibrator and slider plate. ### Claim 6 (depends on 1) The assembly according to claim 1, further comprising a cage assembly that shrouds a motor of the vibrator. ### Claim 7 (depends on 6) The assembly according claim 6, wherein the cage assembly includes a pair of endcaps and at least one handle extending therebetween wherein the at least one handle is isolated from vibrations. ### Claim 8 (depends on 7) The assembly according to claim 7 wherein the frame assembly includes a slider plate configured to permit relative sliding between the slider plate and the vibrator, the slider plate includes a plurality of apertures sized and placed to retain at least a portion of the testing assembly. ### Claim 9 (depends on 1) The assembly according to claim 1, wherein the frame assembly includes a locking system capable of having an engaged position that locks the testing assembly to the frame assembly and a disengaged position that allows sliding movement of the testing assembly relative to the frame assembly. ### Claim 10 (depends on 9) The assembly according to claim 9, wherein the locking system includes a hook configured to couple the vibrator and the frame assembly relative to one another. ### Claim 11 (depends on 1) The assembly according to claim 1, wherein the frame assembly includes a plurality of legs rotatably and adjustably coupled to a slider plate. ### Claim 12 (depends on 1) The assembly according to claim 1, wherein the frame assembly includes an elongated central frame member that extends between a handlebar and base. ### Claim 13 (depends on 12) The assembly according to claim 12 further comprising at least two wheels axially coupled to the elongated central frame member proximate to the base. ### Claim 14 (depends on 1) The assembly according to claim 1, wherein the frame assembly includes a shaft guide having an end portion configured to slidingly engage a shaft that connects the vibrator to the testing instrument. ### Claim 15 (depends on 1) The assembly according to claim 1, wherein the vibrator generates an electrical load impedance curve from a looping circuit. ### Claim 16 A method of testing concrete workability, comprising: providing a testing apparatus having a concrete vibrator portion and frame assembly, wherein the frame assembly slidably supports the concrete vibrator portion, and the concrete vibrator portion is slidable relative to the frame assembly, and decoupling the concrete vibrator portion from the frame assembly to permit relative movement there between. ### Claim 17 (depends on 16) The method of claim 16, wherein the step of de-coupling includes removing a pin from a hook assembly and articulating a hook into a disengaged position. ### Claim 18 (depends on 16) The method of claim 16, wherein the testing apparatus includes a vibrating source that develops an electrical load impedance curve from a looping circuit in a PC Board of the vibrating source. ### Claim 19 A concrete workability meter assembly comprising: a testing assembly including a concrete testing instrument operatively connected to a vibrator; and a frame assembly configured to slidingly support the testing assembly, wherein the frame assembly is configured to permit relative sliding between the frame assembly and the vibrator.