# US 11,110,586 B2 · Multi-functional tool structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,110,586 B2 - Document ID: US11110586B2 - Status: Granted - Kind: B2 - Application number: 16/189,837 - Filed: 2018-11-13 - Published: 2020-05-14 - Granted: 2021-09-07 - Earliest claimed: 2018-11-13 - Applicants: Huang Chin-Chen - Inventors: Huang Chin-Chen - Web page: https://patentgrep.com/patent/US11110586B2 ## CPC - B25G 1/085: {for screwdrivers, wrenches or spanners} - B25B 23/0035: {Connection means between socket or screwdriver bit and tool} - B25F 1/02: with interchangeable or adjustable tool elements - B25G 3/36: Lap joints; Riveted, screwed, or like joints (socket, tang, or like fixings B25G3/02) - 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) - B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING - B25F: COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR {(machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass B23P23/00 and subgroups)} ## Abstract This invention is a multi-functional tool structure, consisting of a handle, a base, a cover and a sleeve. The base is engaged to the handle, and has multiple slots for placing tool heads, while the bottom part is provided with tool positioning recesses for fixing tool heads. The sleeve is set on the base, and has a side opening. Hence, when the side opening is set in line with the too heads by the rotation of the sleeve, the tool head can be removed from the side opening, and fixed to the tool fixing recess on the base before use. ## Claims ### Claim 1 A multi-functional tool structure, comprising: a handle, a top part of the handle comprising an annular opening and at least two engaging recesses, each engaging recess recessed equidistantly on an inner surface of the annular opening, each engaging recess comprising a guiding slot and an engaging slot, the guiding slot and the engaging slot recessed on the inner surface of the annular opening, the guiding slot extending downward from a top surface of the annular opening, the engaging slot disposed below the guiding slot, an end of the engaging slot connected to the guiding slot; a base, the base comprising multiple stops, multiple slots, and a bottom part, the multiple stops and the multiple slots alternatingly disposed along an outer periphery of the base, and a top end of each stop having a respective first joint, an outer side of one of the stops having an elastic assembly; wherein each of the multiple slots is configured for accommodating one of a plurality of tool heads, and the bottom part comprises at least two engaging protrusions and a tool fixing recess, the engaging protrusions configured to engage the engaging recesses on the handle, and the tool fixing recess configured for accepting one of the plurality of tool heads; a cover, multiple second joints disposed on a bottom surface of the cover and configured for engaging with the first joints on the base; a hollow sleeve comprising a side opening and multiple grooves, the side opening disposed on one side of the sleeve, the multiple grooves disposed on an inner surface of the sleeve, the sleeve disposed on the base and located between the handle and the cover, the elastic assembly abutting the grooves; wherein when the sleeve is rotated by an external force, the elastic assembly is deformed in order to switch to one of the corresponding grooves; wherein the handle is separable from the base, the side opening is capable of corresponding to the one of the tool heads by rotation of the sleeve, such that the one of the tool heads is accessible from the side opening for fixing to the tool fixing recess on the base. ### Claim 2 (depends on 1) The multi-functional tool structure as claimed in claim 1, wherein the elastic assembly comprises a side recessed hole, an elastic component and a steel ball, the side recessed hole disposed on the outer side of one of the stops, and ends of the elastic component abut against an end wall of the side recessed hole and the steel ball respectively, the steel ball abutting against the grooves on the sleeve by an elastic force of the elastic component. ### Claim 3 (depends on 1) The multi-functional tool structure as claimed in claim 1, wherein the base and the sleeve are cylindrical. ### Claim 4 (depends on 1) The multi-functional tool structure as claimed in claim 1, wherein the handle comprises an internally threaded hole and a cutter, the internally threaded hole is disposed below the annular opening, and the cutter is fixed to the handle and extends outward from a bottom part of the handle. ### Claim 5 (depends on 1) The multi-functional tool structure as claimed in claim 1, wherein the cover is made from metal. ### Claim 6 (depends on 1) The multi-functional tool structure as claimed in claim 1, wherein each of the tool heads comprise a fixed end, the fixed end configured for securing to the tool fixing recess on the base. ### Claim 7 (depends on 6) The multi-functional tool structure as claimed in claim 6, wherein a cross-sectional shape of the fixed end corresponds to a shape of the tool fixing recess.