# US 11,305,394 B2 · Blade guard for saw of saw house and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,394 B2 - Document ID: US11305394B2 - Status: Granted - Kind: B2 - Application number: 16/395,369 - Filed: 2019-04-26 - Published: 2020-10-29 - Granted: 2022-04-19 - Earliest claimed: 2019-04-26 - Assignees: Paper Converting Machine Company - Applicants: Paper Converting Machine Company - Inventors: Matthew J. Chike - Web page: https://patentgrep.com/patent/US11305394B2 ## CPC - B23Q 11/06: Safety devices for circular cutters - B23Q 11/08: Protective coverings for parts of machine tools; Splash guards - B23Q 11/0078: {Safety devices protecting the operator, e.g. against accident or noise (protecting the machine tool B23Q5/58; protecting people, in general F16P1/00, F16P3/00)} - B27G 19/025: {with guards for tool} - B23D 45/042: {with the saw blade carried by a pivoted lever (B23D45/028, B23D45/065 take precedence)} - B26D 1/15: with vertical cutting member - B26D 7/22: Safety devices specially adapted for cutting machines (safety devices in general F16P) - B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT - B27G: ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS (tools for grinding B24D; sawing tools B27B33/00; tools for slotting or mortising machines B27F5/02; tools for the manufacture of wood shavings, chips, powder or the like B27L11/00); SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS - B23D: PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR (making toothed gears or the like B23F; cutting metal by applying heat locally B23K; arrangements for copying or controlling B23Q) - B26D: CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING (for growing crops or plants A01D, A01G; for fodder or straw A01F; for bulk butter A01J; for dough A21C; slaughtering A22B; for tobacco, cigars or cigarettes A24; marking-out, perforating or making buttonholes A41H25/00; manufacturing footwear A43D; brushmaking A46D; surgery A61B; disintegrating, mincing or shredding in general B02C; cutting wire, making pins or nails B21F, B21G; of the kind used formetal B23; cutting by abrasive fluid jets B24C5/02; hand-held cutting tools B26B; perforating, cutting-out, stamping-out or punching, or severing by means other than cutting B26F; for wood B27; for stone B28D; working of plastics or substances in a plastic state B29; making boxes, cartons, envelopes or bags, of paper or similarly worked materials, e.g. metal foil, B31B; article or web delivery apparatus incorporating cutting or line-perforating devices B65H35/00; for leather or upholstery B68, C14B; for glass C03B; making matches C06F; for peat C10F; for sugar C13B45/00; for textile materials D06H; civil engineering, building, mining, see Section E; for light guides G02B6/25; cutting processed photographic material G03D15/04) ## Abstract A blade guard assembly for a circular saw blade of a saw house includes a blade cover with a face panel and an edge portion that extends from the face panel. An actuator is mountable the blade cover and the structure of the saw house. When the blade guard assembly is mounted in saw house, the blade cover is movable with the actuator between a covered position and an exposed position. In the covered position, the face panel and edge portion at least partially surround the saw blade. In the exposed position, the face panel is spaced from the saw blade. ## Claims ### Claim 1 A saw comprising: a saw house with an interior and an access opening to the interior; at least one saw blade within the interior of the saw house; an arm within the interior of the saw house, the arm being operatively coupled to the at least one saw bade, wherein when the saw is enabled for a cutting operation, the saw is adapted and configured to move the arm in a manner that the at least one saw blade moves orbitally in the interior of the saw house and the saw is adapted and configured to rotate the at least one saw blade, such that the arm orbitally moves the at least one saw blade for cutting an object within the interior of the saw house, wherein when the saw is disabled from the cutting operation, the saw is adapted and configured to move the arm in a manner that the at least one saw blade is moved to a known position; a blade guard assembly for the at least one saw blade, the blade guard assembly including at least one blade cover and an actuator, the actuator being adapted and configured to move the at least one blade cover, the at least one blade cover having a face panel and an edge portion extending from the face panel, the blade guard assembly being arranged in the saw house in a manner such that the at least one blade cover is movable with the actuator between a covering position and an exposing position, wherein when the saw is disabled from the cutting operation and when the at least one saw blade is in the known position, the saw is adapted and configured to actuate the actuator to move the at least one blade cover to the covering position, wherein in the covering the position, the face panel is adjacent to the at least one saw blade and the edge portion is adjacent to at least a portion of a cutting edge of the at least one saw blade, wherein when the saw is enabled for the cutting operation, the saw is adapted and configured to actuate the actuator to move the at least one blade cover to the exposing position, wherein in the exposing position, the face panel and the edge portion of the at least one blade cover are spaced from the at least one saw blade to allow the arm to move the at least one saw blade orbitally in the interior of the saw house and to allow cutting with the at least one saw blade. ### Claim 2 (depends on 1) The saw of claim 1 wherein the blade guard assembly is mounted in the saw house in a manner such that the at least one blade cover depends from the saw house when the at least one blade cover is in the covering position. ### Claim 3 (depends on 1) The saw of claim 1 wherein the blade guard assembly includes a drive shoe mounted to the at least one blade cover and a first mount of the actuator is mounted to the drive shoe. ### Claim 4 (depends on 3) The saw of claim 3 wherein when the at least one blade cover is in the covering position, the drive shoe cooperates with a sensor of the saw enabling the sensor to generate a first signal indicating the at least one blade cover is in the covering position. ### Claim 5 (depends on 4) The saw of claim 4 wherein a control of the saw is enabled to receive the first signal indicating that the at least one blade cover is in the covering position, and the control is enabled to generate a second signal to unlock the access opening to the interior of the saw house. ### Claim 6 (depends on 3) The saw of claim 3 wherein when the at least one blade cover is in the exposing position, the drive shoe cooperates with a sensor of the saw house enabling the sensor to generate a signal indicating the at least one blade cover is in the exposing position. ### Claim 7 (depends on 1) The saw of claim 1 wherein when the at least one blade cover is in the covering position, the face panel cooperates with a sensor of the saw enabling the sensor to generate a first signal indicating the at least one blade cover is in the covering position. ### Claim 8 (depends on 7) The saw of claim 7 wherein a control of the saw is enabled to receive the first signal indicating that the at least one blade cover is in the covering position and the control is enabled to generate a second signal to unlock the access opening to the interior of the saw house. ### Claim 9 (depends on 1) The saw of claim 1 wherein when the at least one blade cover is in the exposing position, the face panel cooperates with a sensor of the saw enabling the sensor to generate a signal indicating the at least one blade cover is in the exposing position.