# US 2018/0021745 A1 · Collet locking shaft assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0021745 A1 - Document ID: US20180021745A1 - Status: Published application - Kind: A1 - Application number: 15/217,261 - Filed: 2016-07-22 - Published: 2018-01-25 - Earliest claimed: 2016-07-22 - Assignees: Bison Gear & Engineering Corp. - Applicants: Bison Gear & Engineering Corp. - Inventors: Jeffery A. Hamaker; Matthew Sherman Hanson - Web page: https://patentgrep.com/patent/US20180021745A1 ## CPC - B23B 31/2073: {Axially fixed cam, moving jaws (B23B31/20125 takes precedence)} - B01F 27/906: with fixed axis - B01F 35/31: Couplings - B01F 27/213: characterised by the connection with the drive - B01F 33/86: {Mixing heads comprising a driven stirrer} - B23B 2231/2078: Jaw carriers, i.e. components retaining the collet itself - B23B 2231/2083: Collets comprising screw threads - Y10T 279/17538: Threaded-sleeve actuator - B23B: TURNING; BORING (arrangements for copying or controlling B23Q) - B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A universal driven shaft retaining system includes a collet chuck holder that circumferentially engages a collet chuck with substantially inward compression during inward co-linear movement of a drawing bar creating a clamping (locking) effect on an inserted driven shaft. ## Claims ### Claim 1 A universal driven shaft retaining system comprises: a collet chuck holder operative with a gearmotor, the collet chuck holder including a collet chuck and drawing bar; a collet chuck opening for receiving a driven shaft along a central axis of the collet chuck holder; and wherein the collet chuck holder circumferentially engages the collet chuck within the collet chuck holder to provide substantially inward compression during inward co-linear movement of the drawing bar and create a clamping effect on an inserted driven shaft. ### Claim 2 (depends on 1) The universal driven shaft retaining system as per claim 1, wherein the inserted driven shaft is any of: hollow, solid or a hybrid shaft. ### Claim 3 (depends on 1) The universal driven shaft retaining system as per claim 1, wherein the clamping effect on an inserted driven shaft locks the inserted driven shaft to a drive mechanism of the gearmotor. ### Claim 4 (depends on 1) The universal driven shaft retaining system as per claim 1, wherein the inserted driven shaft is selected from a set of driven shafts of various diameters. ### Claim 5 (depends on 1) The universal driven shaft retaining system as per claim 1, wherein the inserted driven shaft is selected from a set of driven shafts of various lengths. ### Claim 6 (depends on 1) The universal driven shaft retaining system as per claim 1, wherein the inserted driven shaft is selected from a set of driven shafts of various cross-sections. ### Claim 7 (depends on 1) The universal driven shaft retaining system as per claim 1, wherein the collet chuck holder comprises a 5C collet. ### Claim 8 (depends on 1) The universal driven shaft retaining system as per claim 1, wherein the opening receives hexagonal or square shafts. ### Claim 9 (depends on 1) The universal driven shaft retaining system as per claim 1, wherein the driven shaft includes a mixing shaft. ### Claim 10 A universal driven shaft retaining system comprises: a collet chuck holder, the collet chuck holder including a central cylindrical body portion that circumferentially engages a frustoconical collet chuck with substantially inward compression during inward co-linear movement; a plurality of threads, on an external proximal end of the frustoconical collet chuck, radially engaging mating internal threads of a drawing bar; a hexagonal lock nut providing the inward co-linear movement during rotation in conjunction with an abutment force to a proximal end of collet chuck holder; one or more ball bearings to provide radial alignment of the collet chuck holder, the frustoconical collet chuck and the drawing bar; and a gear in operative engagement with the collet chuck holder to provide a geared surface for mechanical rotation of a shaft, received within the frustoconical collet chuck, by one or more gears of a gearmotor. ### Claim 11 (depends on 10) The universal driven shaft retaining system as per claim 10, wherein the shaft is any of: hollow, solid or a hybrid shaft. ### Claim 12 (depends on 10) The universal driven shaft retaining system as per claim 10, wherein the inward compression locks the shaft to a drive mechanism of the gearmotor. ### Claim 13 (depends on 10) The universal driven shaft retaining system as per claim 10, wherein the shaft is selected from a set of shafts of various diameters. ### Claim 14 (depends on 10) The universal driven shaft retaining system as per claim 10, wherein the shaft is selected from a set of shafts of various lengths. ### Claim 15 (depends on 10) The universal driven shaft retaining system as per claim 10, wherein the shaft is selected from a set of shafts of various cross-sections. ### Claim 16 (depends on 10) The universal driven shaft retaining system as per claim 10, wherein the collet chuck holder comprises a 5C collet. ### Claim 17 (depends on 10) The universal driven shaft retaining system as per claim 10, wherein the frustoconical collet chuck receives hexagonal or square shafts. ### Claim 18 (depends on 10) The universal driven shaft retaining system as per claim 10, wherein the shaft includes a mixing shaft. ### Claim 19 A gearmotor comprises: a universal driven shaft retaining system comprising: a collet chuck holder operative with a gearmotor, the collet chuck holder including a collet chuck and drawing bar; a collet chuck holder opening for receiving a driven shaft along a central axis of the collet chuck holder; and wherein the collet chuck holder circumferentially engages the collet chuck within the collet chuck holder to provide substantially inward compression during inward co-linear movement of the drawing bar to create a clamping effect on an inserted driven shaft. ### Claim 20 (depends on 19) The gearmotor as per claim 19, wherein the inserted driven shaft is selected from a set of driven shafts of various: diameters, lengths, or cross-sections.