# US 11,110,587 B2 · Painting tool structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,110,587 B2 - Document ID: US11110587B2 - Status: Granted - Kind: B2 - Application number: 16/221,548 - Filed: 2018-12-16 - Published: 2020-06-18 - Granted: 2021-09-07 - Earliest claimed: 2018-12-16 - Applicants: Huang Chin-Chen - Inventors: Huang Chin-Chen - Web page: https://patentgrep.com/patent/US11110587B2 ## CPC - B25G 3/28: comprising wedges, keys, or like expanding means - E04F 21/163: {with exchangeable blades} - B05C 17/10: Hand tools for removing partially or for spreading or redistributing applied liquids or other fluent materials, e.g. colour touchers - B25G 1/102: {the shape being specially adapted to facilitate handling or improve grip} - E04F 21/00: Implements for finishing work on buildings (for working or treating building elements of stone or stone-like material B28D) - B25G: HANDLES FOR HAND IMPLEMENTS (attaching the blades or the like to handles of hand tools for soil working A01B1/22; handles of hand implements for harvesting A01D1/14; handles integral with brushware A46B) - E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B) - B05C: APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (spraying apparatus, atomising apparatus, nozzles B05B; plant for applying liquids or other fluent materials to objects by electrostatic spraying B05B5/08) ## Abstract This invention is an improved painting tool structure, consisting of a body and a knife board. The body comprises a grip part and a bottom plate. The grip part protrudes from the upper surface of one end of the bottom plate, whereas a clamping slot with an opening facing downward is disposed between the grip part and the bottom plate. The bottom plate and the clamping slot form an angle of less than 90 degrees. The knife board comprises a blade part and a connecting part, where the connecting part 22 is obliquely extended upward from one end of the blade part to form an angle of less than 90 degrees, and is to be connected to the clamping slot. ## Claims ### Claim 1 An improved painting tool structure comprising: a body, the body comprising a grip portion and a bottom plate, the grip portion protruding from an upper surface on an end of the bottom plate, while a clamping slot with an opening facing downward is formed between the grip portion and the bottom plate, a limiting body disposed in the clamping slot, the bottom plate and the clamping slot forming an angle of less than 90 degrees; a knife board comprising a blade portion and a connecting portion, the connecting portion extending obliquely upward from one end of the blade portion to form an angle of less than 90 degrees with the blade portion, and the angle between the blade portion and the connecting portion is generally equal to the angle between the bottom plate and the clamping slot, the connecting portion comprising multiple positioning portions, the connecting portion configured to connect to the clamping slot on the body, the positioning portions configured to engage the limiting body so that the knife board is connected to the body; wherein when the connecting portion is connected to the clamping slot, the knife board is fixed under the bottom plate of the body, and the blade portion partially exposes the body. ### Claim 2 (depends on 1) An improved painting tool structure as claimed in claim 1, wherein a top of the grip portion has a circular arc surface, and a surface on two sides connecting to top and bottom sections of the grip portion form a groove. ### Claim 3 (depends on 1) An improved painting tool structure as claimed in claim 1, wherein the body is a hollow structure formed with multiple fastening holes penetrating opposite ends of the body. ### Claim 4 (depends on 1) An improved painting tool structure as claimed in claim 1, wherein an inner recess is defined on a bottom surface of the bottom plate, the inner recess comprising a notch formed between two ends of the bottom plate. ### Claim 5 (depends on 1) An improved painting tool structure as claimed in claim 1, wherein the positioning portions protrude from an outer surface of the connection portion. ### Claim 6 (depends on 1) An improved painting tool structure as claimed in claim 1, further comprising two side covers respectively connected to opposing ends of the body. ### Claim 7 (depends on 6) An improved painting tool structure as claimed in claim 6, wherein the body comprises multiple fastening holes, and the two side covers comprise multiple positioning bodies, and each positioning body is complementary to one of the fastening holes. ### Claim 8 (depends on 6) An improved painting tool structure as claimed in claim 6, wherein the body comprises multiple fastening holes, the two side covers comprise multiple positioning bodies, and each positioning body is attached to an inner circumferential surface of one of the fastening holes to connect the two side covers to the opposing ends of the body. ### Claim 9 (depends on 6) An improved painting tool structure as claimed in claim 6, wherein at least one side cover comprises a guiding slot disposed at a bottom edge of the side cover and corresponds to the clamping slot on the body.