# US 10,246,262 B2 · Zero tension system conveyer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,246,262 B2 - Document ID: US10246262B2 - Status: Granted - Kind: B2 - Application number: 15/850,390 - Filed: 2017-12-21 - Published: 2018-04-26 - Granted: 2019-04-02 - Earliest claimed: 2011-11-07 - Assignees: Zero Tension System, LLC - Applicants: Zero Tension System, LLC - Inventors: Larry J. Mueller - Web page: https://patentgrep.com/patent/US10246262B2 ## CPC - B65G 17/02: comprising a load-carrying belt attached to or resting on the traction element - B65G 15/30: Belts or like endless load-carriers (co-operating with rails or the like B65G21/22; {co-operating} with rollers B65G39/20) - B65G 17/38: Chains or like traction elements (drive chains F16G13/00); Connections between traction elements and load-carriers - B65G 21/18: in three-dimensionally curved paths - B65G 23/04: Drums, rollers, or wheels {(B65G23/18 takes precedence)} - B65G 33/00: Screw or rotary spiral conveyors - B65G: TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS (packaging B65B; handling thin or filamentary materials, e.g. paper sheets or thread, B65H; cranes B66C; portable mobile or lifting or hauling appliances, e.g. hoists, B66D; devices for lifting or lowering goods for loading or unloading purposes, e.g. fork-lift trucks, B66F9/00; emptying bottles, jars, casks, barrels or similar containers, not otherwise provided for, B67C9/00; delivering or transferring liquids B67D; filling or discharging vessels for liquefied, solidified or compressed gases F17C; pipe-line systems for fluids F17D) ## Abstract Zero tension system conveyor. A conveyor belt is driven by at least a portion of the conveyor belt being in continuous contact with a block chain within at least a portion of an overall conveyor belt system. Such a conveyor belt system may be implemented in a spiral configuration such that a relatively small portion of the overall width of the conveyor belt is in contact with the block chain above and/or below the conveyor belt. The static force/weight of the conveyor belt in conjunction with the continuous contact between at least a portion of the conveyor belt and the block chain effectuates the driving of the conveyor belt through the overall conveyor belt system. The block chain is composed of a number of links, at least some of which include a respective hook/protrusion on one side thereof, for being directly engaged by drum bars implemented within a drum assembly. ## Claims ### Claim 1 A conveyor belt system comprising: a drum assembly that includes a plurality of drum bars; a block chain configured to engage at least one of the plurality of drum bars and to be driven by the drum assembly in a first direction when the drum assembly rotates about an axis in a first rotational direction and in a second direction that is different than the first direction when the drum assembly rotates about the axis in a second rotational direction; and a conveyor belt configured to: be driven based on the first direction at or during a first time period when in continuous contact with at least one portion of the block chain when the block chain engages the at least one of the plurality of drum bars and is driven by the drum assembly in the first direction; and be driven based on the second direction at or during a second time period that is different than the first time period when in continuous contact with the at least one portion of the block chain or at least one other portion of the block chain when the block chain engages the at least one of the plurality of drum bars and is driven by the drum assembly in the second direction. ### Claim 2 (depends on 1) The conveyor belt system of claim 1 further comprising: a motor configured to rotate the drum assembly; and the block chain including a plurality of links, wherein at least one of the plurality of links has a hook or protrusion configured to engage the at least one of the plurality of drum bars directly so that the block chain is driven in the first direction by the drum assembly when the drum assembly rotates about the axis in the first rotational direction and to engage the at least one of the plurality of drum bars directly so that the block chain is driven in the second direction by the drum assembly when the drum assembly rotates about the axis in the second rotational direction. ### Claim 3 (depends on 1) The conveyor belt system of claim 1, wherein the block chain is fabricated of at least one of polyethylene material, ultrahigh molecular weight (UHMW) plastic, or food grade nonporous plastic. ### Claim 4 (depends on 1) The conveyor belt system of claim 1, wherein the block chain is fabricated of a material having ability to operate within an environment that is affected by at least one of heating, cooling, drying, freezing, or airflow. ### Claim 5 (depends on 1) The conveyor belt system of claim 1 further comprising: the block chain including a plurality of links, wherein at least one of the plurality of links has a first tab on a top thereof and a second tab on a bottom thereof such that the first tab and the second tab are configured to prevent at least one portion of the conveyor belt from contacting at least one of the plurality of drum bars. ### Claim 6 (depends on 1) The conveyor belt system of claim 1, wherein the block chain is further configured to: drive the conveyor belt through a first processing region based on a first processing operation that includes at least one of heating, cooling, drying, freezing, or airflow; and drive the conveyor belt through a second processing region based on a second processing operation that includes at least one of the heating, the cooling, the drying, the freezing, or the airflow. ### Claim 7 (depends on 1) The conveyor belt system of claim 1, wherein the block chain and the conveyor belt are alternatively and vertically stacked, and the conveyor belt includes a plurality of integrated supports implemented along at least one portion of the conveyor belt and configured to maintain separation between stacked layers of the conveyor belt. ### Claim 8 (depends on 1) The conveyor belt system of claim 1, wherein the conveyor belt is further configured to: convey a product that includes at least one of an article of manufacture or a food component. ### Claim 9 A conveyor belt system comprising: a drum assembly that includes a plurality of drum bars; a block chain configured to engage at least one of the plurality of drum bars and to be driven by the drum assembly in a first direction when the drum assembly rotates about an axis in a first rotational direction and in a second direction that is different than the first direction when the drum assembly rotates about the axis in a second rotational direction, wherein the block chain is fabricated of a material having ability to operate within an environment that is affected by at least one of heating, cooling, drying, freezing, or airflow; and a conveyor belt configured to: be driven based on the first direction at or during a first time period when in continuous contact with at least one portion of the block chain when the block chain engages the at least one of the plurality of drum bars and is driven by the drum assembly in the first direction; be driven based on the second direction at or during a second time period that is different than the first time period when in continuous contact with the at least one portion of the block chain or at least one other portion of the block chain when the block chain engages the at least one of the plurality of drum bars and is driven by the drum assembly in the second direction; and convey a product that includes at least one of an article of manufacture or a food component. ### Claim 10 (depends on 9) The conveyor belt system of claim 9 further comprising: a motor configured to rotate the drum assembly; and the block chain including a plurality of links, wherein at least one of the plurality of links has a hook or protrusion configured to engage the at least one of the plurality of drum bars directly so that the block chain is driven in the first direction by the drum assembly when the drum assembly rotates about the axis in the first rotational direction and to engage the at least one of the plurality of drum bars directly so that the block chain is driven in the second direction by the drum assembly when the drum assembly rotates about the axis in the second rotational direction. ### Claim 11 (depends on 9) The conveyor belt system of claim 9, wherein the block chain is fabricated of at least one of polyethylene material, ultrahigh molecular weight (UHMW) plastic, or food grade nonporous plastic. ### Claim 12 (depends on 9) The conveyor belt system of claim 9 further comprising: the block chain including a plurality of links, wherein at least one of the plurality of links has a first tab on a top thereof and a second tab on a bottom thereof such that the first tab and the second tab are configured to prevent at least one portion of the conveyor belt from contacting at least one of the plurality of drum bars. ### Claim 13 (depends on 9) The conveyor belt system of claim 9, wherein the block chain is further configured to: drive the conveyor belt through a first processing region based on a first processing operation that includes at least one of the heating, the cooling, the drying, the freezing, or the airflow; and drive the conveyor belt through a second processing region based on a second processing operation that includes at least one of the heating, the cooling, the drying, the freezing, or the airflow. ### Claim 14 (depends on 9) The conveyor belt system of claim 9, wherein the block chain and the conveyor belt are alternatively and vertically stacked, and the conveyor belt includes a plurality of integrated supports implemented along at least one portion of the conveyor belt and configured to maintain separation between stacked layers of the conveyor belt. ### Claim 15 A method for execution by a conveyor belt system, the method comprising: rotating a drum assembly that includes a plurality of drum bars; engaging at least one of the plurality of drum bars by a block chain to drive the drum assembly in a first direction when the drum assembly rotates about an axis in a first rotational direction and in a second direction that is different than the first direction when the drum assembly rotates about the axis in a second rotational direction; and driving a conveyor belt: based on the first direction at or during a first time period when in continuous contact with at least one portion of the block chain when the block chain engages the at least one of the plurality of drum bars and is driven by the drum assembly in the first direction; and based on the second direction at or during a second time period that is different than the first time period when in continuous contact with the at least one portion of the block chain or at least one other portion of the block chain when the block chain engages the at least one of the plurality of drum bars and is driven by the drum assembly in the second direction. ### Claim 16 (depends on 15) The method of claim 15 further comprising: operating a motor that is configured to rotate the drum assembly; and wherein: the block chain including a plurality of links, wherein at least one of the plurality of links has a hook or protrusion configured to engage the at least one of the plurality of drum bars directly so that the block chain is driven in the first direction by the drum assembly when the drum assembly rotates about the axis in the first rotational direction and to engage the at least one of the plurality of drum bars directly so that the block chain is driven in the second direction by the drum assembly when the drum assembly rotates about the axis in the second rotational direction. ### Claim 17 (depends on 15) The method of claim 15, wherein the block chain is fabricated of at least one of polyethylene material, ultrahigh molecular weight (UHMW) plastic, or food grade nonporous plastic. ### Claim 18 (depends on 15) The method of claim 15, wherein the block chain is fabricated of a material having ability to operate within an environment that is affected by at least one of heating, cooling, drying, freezing, or airflow. ### Claim 19 (depends on 15) The method of claim 15 further comprising: the block chain including a plurality of links, wherein at least one of the plurality of links has a first tab on a top thereof and a second tab on a bottom thereof such that the first tab and the second tab are configured to prevent at least one portion of the conveyor belt from contacting at least one of the plurality of drum bars. ### Claim 20 (depends on 15) The method of claim 15 further comprising: driving the conveyor belt through a first processing region based on a first processing operation that includes at least one of heating, cooling, drying, freezing, or airflow; and driving the conveyor belt through a second processing region based on a second processing operation that includes at least one of the heating, the cooling, the drying, the freezing, or the airflow.