Patents by Inventor David C. Weiser
David C. Weiser has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10589935Abstract: A motorized pulley mounted on a stationary shaft to drive a conveyor belt. The motorized pulley is constructed of an axial-flux motor in a housing connected to the motor's rotor. A driver including a drive ring has a drive surface mounted to the periphery of the housing to rotate with the rotor and the housing and drive a conveyor belt. The motor's stator is affixed to the shaft axially offset from the rotor.Type: GrantFiled: January 4, 2017Date of Patent: March 17, 2020Assignee: Laitram, L.L.C.Inventors: Bryant G. Ragan, Gilbert J. MacLachlan, David C. Weiser
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Patent number: 10464755Abstract: A noseroller assembly for transitioning a conveyor belt at an end of a carryway comprises offset bearings for guiding a conveyor belt. A first set of bearings protrudes slightly from the end of the noseroller substrate to guide the conveyor belt around the noseroller and a second set of bearings in recessed from the end of the noseroller substrate to prevent wear.Type: GrantFiled: October 5, 2016Date of Patent: November 5, 2019Assignee: Laitram, L.L.C.Inventors: Gilbert J. MacLachlan, David C. Weiser
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Publication number: 20190016537Abstract: A motorized pulley mounted on a stationary shaft to drive a conveyor belt. The motorized pulley is constructed of an axial-flux motor in a housing connected to the motor's rotor. A driver including a drive ring has a drive surface mounted to the periphery of the housing to rotate with the rotor and the housing and drive a conveyor belt. The motor's stator is affixed to the shaft axially offset from the rotor.Type: ApplicationFiled: January 4, 2017Publication date: January 17, 2019Inventors: Bryant G. Ragan, Gilbert J. MacLachlan, David C. Weiser
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Publication number: 20180244472Abstract: A noseroller assembly for transitioning a conveyor belt at an end of a carryway comprises offset bearings for guiding a conveyor belt. A first set of bearings protrudes slightly from the end of the noseroller substrate to guide the conveyor belt around the noseroller and a second set of bearings in recessed from the end of the noseroller substrate to prevent wear.Type: ApplicationFiled: October 5, 2016Publication date: August 30, 2018Inventors: Gilbert J. MacLachlan, David C. Weiser
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Patent number: 9096379Abstract: Low-noise rollers in modular plastic conveyor belts. Energy-absorbing elements formed on belt rollers or in roller support structure is used to absorb the energy of impacts between rollers and the support structure. The energy-absorbing elements include resilient roller sections sandwiched between rigid sections, spring-like bent tabs on the end faces of rollers, hinged bumpers or flexible fingers between the end faces of the rollers and the roller support structure, and flexible structure protruding from the module into circumferential grooves in the outer cylindrical surface or circular grooves formed in the end faces of the rollers.Type: GrantFiled: June 21, 2012Date of Patent: August 4, 2015Assignee: Laitram, L.L.C.Inventors: Henry H. Gilley, Jr., David C. Weiser
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Patent number: 9045287Abstract: Snap-on rollers for a conveyor belt. The snap-on roller may be snapped onto an axle or into a cavity of a conveyor belt module. Multi-piece snap-on rollers can be installed radially onto an axle on a conveyor belt and joined together in a puzzle pattern to form a complete roller that can rotate on the axle.Type: GrantFiled: January 31, 2014Date of Patent: June 2, 2015Assignee: Laitram, L.L.C.Inventors: Abraham L. Miller, Gilbert J. MacLachlan, David C. Weiser
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Patent number: 8881890Abstract: A modular roller-top conveyor belt and rollers for the belt. The roller-top belt has axles that are fixed relative to the module body. Each of the pieces of the multi-piece rollers can be installed radially onto an axle and joined together in a puzzle pattern to form a complete roller that can rotate on the axle. Parallel ridges extending across the width of the modules add stiffness to the belt.Type: GrantFiled: December 15, 2011Date of Patent: November 11, 2014Assignee: Laitram, L.L.C.Inventors: Gilbert J. MacLachlan, David C. Weiser, Abraham L. Miller, Errol P. Knott, Timothy J. DeRoche, Jude G. Martin
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Patent number: 8776998Abstract: A modular plastic conveyor belt constructed of belt modules having hooked structure to hold belt rows together during splicing for easier hinge-rod insertion and to accommodate an elongated belt edge portion permitting hinge-rod growth and a method for splicing such a belt together. The modules include a pivot end that hooks into a mating receptacle on the module of a consecutive belt row. An aperture through the receptacle and the pivot end is aligned with the apertures of other hinge elements to form a lateral passageway for a hinge rod.Type: GrantFiled: April 11, 2011Date of Patent: July 15, 2014Assignee: Laitram, L.L.C.Inventors: David C. Weiser, Gilbert J. MacLachlan, Terral A. Ridgell
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Publication number: 20140183009Abstract: Low-noise rollers in modular plastic conveyor belts. Energy-absorbing elements formed on belt rollers or in roller support structure is used to absorb the energy of impacts between rollers and the support structure. The energy-absorbing elements include resilient roller sections sandwiched between rigid sections, spring-like bent tabs on the end faces of rollers, hinged bumpers or flexible fingers between the end faces of the rollers and the roller support structure, and flexible structure protruding from the module into circumferential grooves in the outer cylindrical surface or circular grooves formed in the end faces of the rollers.Type: ApplicationFiled: June 21, 2012Publication date: July 3, 2014Applicant: LAITRAM, L.L.C.Inventors: Henry H. Gilley, JR., David C. Weiser
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Publication number: 20140144754Abstract: Snap-on rollers for a conveyor belt. The snap-on roller may be snapped onto an axle or into a cavity of a conveyor belt module. Multi-piece snap-on rollers can be installed radially onto an axle on a conveyor belt and joined together in a puzzle pattern to form a complete roller that can rotate on the axle.Type: ApplicationFiled: January 31, 2014Publication date: May 29, 2014Applicant: Laitram, L.L.C.Inventors: Abraham L. Miller, Gilbert J. MacLachlan, David C. Weiser
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Patent number: 8646595Abstract: Snap-on rollers for a conveyor belt. The snap-on roller may be snapped onto an axle or into a cavity of a conveyor belt module. Multi-piece snap-on rollers can be installed radially onto an axle on a conveyor belt and joined together in a puzzle pattern to form a complete roller that can rotate on the axle.Type: GrantFiled: December 15, 2011Date of Patent: February 11, 2014Assignee: Laitram, L.L.C.Inventors: Abraham L. Miller, Gibert J. MacLachlan, David C. Weiser
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Patent number: 8579104Abstract: A modular plastic conveyor belt that is useful in accommodating hinge rods that tend to lengthen during use and an edge module for constructing such a belt. An edge portion of the edge module has an elongated link end that provides an unimpeded growth path for a hinge rod within the confines of the belt. The edge portion of one edge module is hooked to the edge portion of an adjacent edge module by a pivot that is pivotally received in a mating receptacle on the adjacent module.Type: GrantFiled: August 18, 2010Date of Patent: November 12, 2013Assignee: Laitram, L.L.C.Inventors: David C. Weiser, Gilbert J. MacLachlan
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Patent number: 8496105Abstract: A modular roller-top conveyor belt and multi-piece rollers for the belt. The roller-top belt has axles unitarily molded with the belt modules. Each of the pieces of the multi-piece rollers can be installed radially onto an axle and joined together in a puzzle pattern to form a complete roller that can rotate on the axle. Parallel ridges extending across the width of the modules add stiffness to the belt.Type: GrantFiled: May 23, 2011Date of Patent: July 30, 2013Assignee: Laitram, L.L.C.Inventors: Gilbert J. MacLachlan, David C. Weiser
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Publication number: 20120318644Abstract: Snap-on rollers for a conveyor belt. The snap-on roller may be snapped onto an axle or into a cavity of a conveyor belt module. Multi-piece snap-on rollers can be installed radially onto an axle on a conveyor belt and joined together in a puzzle pattern to form a complete roller that can rotate on the axle.Type: ApplicationFiled: December 15, 2011Publication date: December 20, 2012Applicant: LAITRAM, L.L.C.Inventors: Gilbert J. MacLachlan, David C. Weiser, Abraham L. Miller
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Publication number: 20120298487Abstract: A modular roller-top conveyor belt and rollers for the belt. The roller-top belt has axles that are fixed relative to the module body. Each of the pieces of the multi-piece rollers can be installed radially onto an axle and joined together in a puzzle pattern to form a complete roller that can rotate on the axle. Parallel ridges extending across the width of the modules add stiffness to the belt.Type: ApplicationFiled: December 15, 2011Publication date: November 29, 2012Applicant: LAITRAM, L.L.C.Inventors: Gilbert J. MacLachlan, David C. Weiser, Abraham L. Miller, Errol P. Knott, Timothy J. DeRoche, Jude G. Martin
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Publication number: 20120298486Abstract: A modular roller-top conveyor belt and multi-piece rollers for the belt. The roller-top belt has axles unitarily molded with the belt modules. Each of the pieces of the multi-piece rollers can be installed radially onto an axle and joined together in a puzzle pattern to form a complete roller that can rotate on the axle. Parallel ridges extending across the width of the modules add stiffness to the belt.Type: ApplicationFiled: May 23, 2011Publication date: November 29, 2012Applicant: LAITRAM, L.L.C.Inventors: Gilbert J. MacLachlan, David C. Weiser
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Publication number: 20110284347Abstract: Metal-coated thermo-plastic conveyor belt components and methods for their manufacture. Hinge rods, sprockets, and belt modules are coated with metal to increase their stiffness or wear resistance or to improve other performance characteristics.Type: ApplicationFiled: January 11, 2010Publication date: November 24, 2011Applicant: LAITRAM, L.L.C.Inventors: Gilbert J. MacLachlan, David C. Weiser
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Publication number: 20110278138Abstract: A modular plastic conveyor belt that is useful in accommodating hinge rods that tend to lengthen during use and an edge module for constructing such a belt. An edge portion of the edge module has an elongated link end that provides an unimpeded growth path for a hinge rod within the confines of the belt. The edge portion of one edge module is hooked to the edge portion of an adjacent edge module by a pivot that is pivotally received in a mating receptacle on the adjacent module.Type: ApplicationFiled: August 18, 2010Publication date: November 17, 2011Applicant: LAITRAM, L.L.C.Inventors: David C. Weiser, Gilbert J. MacLachlan
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Publication number: 20110278136Abstract: A modular plastic conveyor belt constructed of belt modules having hooked structure to hold belt rows together during splicing for easier hinge-rod insertion and to accommodate an elongated belt edge portion permitting hinge-rod growth and a method for splicing such a belt together. The modules include a pivot end that hooks into a mating receptacle on the module of a consecutive belt row. An aperture through the receptacle and the pivot end is aligned with the apertures of other hinge elements to form a lateral passageway for a hinge rod.Type: ApplicationFiled: April 11, 2011Publication date: November 17, 2011Applicant: LAITRAM, L.L.C.Inventors: David C. Weiser, Gilbert J. MacLachlan, Terral A. Ridgell
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Patent number: 7540368Abstract: A modular roller-top conveyor belt with a dense array of rollers freely rotatable toward the sides of the belt. The rollers are arranged in offset lines and columns in a checkerboard pattern on the top side of the belt. The rollers rotate on axes parallel to the direction of belt travel. The rollers extend in the direction of belt travel over the hinge axes formed between adjacent rows of belt modules.Type: GrantFiled: May 1, 2007Date of Patent: June 2, 2009Assignee: Laitram, L.L.C.Inventor: David C. Weiser