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).

  • Patent number: 10589935
    Abstract: 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: Grant
    Filed: January 4, 2017
    Date of Patent: March 17, 2020
    Assignee: Laitram, L.L.C.
    Inventors: Bryant G. Ragan, Gilbert J. MacLachlan, David C. Weiser
  • Patent number: 10464755
    Abstract: 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: Grant
    Filed: October 5, 2016
    Date of Patent: November 5, 2019
    Assignee: Laitram, L.L.C.
    Inventors: Gilbert J. MacLachlan, David C. Weiser
  • Publication number: 20190016537
    Abstract: 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: Application
    Filed: January 4, 2017
    Publication date: January 17, 2019
    Inventors: Bryant G. Ragan, Gilbert J. MacLachlan, David C. Weiser
  • Publication number: 20180244472
    Abstract: 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: Application
    Filed: October 5, 2016
    Publication date: August 30, 2018
    Inventors: Gilbert J. MacLachlan, David C. Weiser
  • Patent number: 9096379
    Abstract: 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: Grant
    Filed: June 21, 2012
    Date of Patent: August 4, 2015
    Assignee: Laitram, L.L.C.
    Inventors: Henry H. Gilley, Jr., David C. Weiser
  • Patent number: 9045287
    Abstract: 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: Grant
    Filed: January 31, 2014
    Date of Patent: June 2, 2015
    Assignee: Laitram, L.L.C.
    Inventors: Abraham L. Miller, Gilbert J. MacLachlan, David C. Weiser
  • Patent number: 8881890
    Abstract: 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: Grant
    Filed: December 15, 2011
    Date of Patent: November 11, 2014
    Assignee: Laitram, L.L.C.
    Inventors: Gilbert J. MacLachlan, David C. Weiser, Abraham L. Miller, Errol P. Knott, Timothy J. DeRoche, Jude G. Martin
  • Patent number: 8776998
    Abstract: 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: Grant
    Filed: April 11, 2011
    Date of Patent: July 15, 2014
    Assignee: Laitram, L.L.C.
    Inventors: David C. Weiser, Gilbert J. MacLachlan, Terral A. Ridgell
  • Publication number: 20140183009
    Abstract: 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: Application
    Filed: June 21, 2012
    Publication date: July 3, 2014
    Applicant: LAITRAM, L.L.C.
    Inventors: Henry H. Gilley, JR., David C. Weiser
  • Publication number: 20140144754
    Abstract: 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: Application
    Filed: January 31, 2014
    Publication date: May 29, 2014
    Applicant: Laitram, L.L.C.
    Inventors: Abraham L. Miller, Gilbert J. MacLachlan, David C. Weiser
  • Patent number: 8646595
    Abstract: 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: Grant
    Filed: December 15, 2011
    Date of Patent: February 11, 2014
    Assignee: Laitram, L.L.C.
    Inventors: Abraham L. Miller, Gibert J. MacLachlan, David C. Weiser
  • Patent number: 8579104
    Abstract: 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: Grant
    Filed: August 18, 2010
    Date of Patent: November 12, 2013
    Assignee: Laitram, L.L.C.
    Inventors: David C. Weiser, Gilbert J. MacLachlan
  • Patent number: 8496105
    Abstract: 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: Grant
    Filed: May 23, 2011
    Date of Patent: July 30, 2013
    Assignee: Laitram, L.L.C.
    Inventors: Gilbert J. MacLachlan, David C. Weiser
  • Publication number: 20120318644
    Abstract: 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: Application
    Filed: December 15, 2011
    Publication date: December 20, 2012
    Applicant: LAITRAM, L.L.C.
    Inventors: Gilbert J. MacLachlan, David C. Weiser, Abraham L. Miller
  • Publication number: 20120298487
    Abstract: 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: Application
    Filed: December 15, 2011
    Publication date: November 29, 2012
    Applicant: LAITRAM, L.L.C.
    Inventors: Gilbert J. MacLachlan, David C. Weiser, Abraham L. Miller, Errol P. Knott, Timothy J. DeRoche, Jude G. Martin
  • Publication number: 20120298486
    Abstract: 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: Application
    Filed: May 23, 2011
    Publication date: November 29, 2012
    Applicant: LAITRAM, L.L.C.
    Inventors: Gilbert J. MacLachlan, David C. Weiser
  • Publication number: 20110284347
    Abstract: 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: Application
    Filed: January 11, 2010
    Publication date: November 24, 2011
    Applicant: LAITRAM, L.L.C.
    Inventors: Gilbert J. MacLachlan, David C. Weiser
  • Publication number: 20110278138
    Abstract: 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: Application
    Filed: August 18, 2010
    Publication date: November 17, 2011
    Applicant: LAITRAM, L.L.C.
    Inventors: David C. Weiser, Gilbert J. MacLachlan
  • Publication number: 20110278136
    Abstract: 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: Application
    Filed: April 11, 2011
    Publication date: November 17, 2011
    Applicant: LAITRAM, L.L.C.
    Inventors: David C. Weiser, Gilbert J. MacLachlan, Terral A. Ridgell
  • Patent number: 7540368
    Abstract: 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: Grant
    Filed: May 1, 2007
    Date of Patent: June 2, 2009
    Assignee: Laitram, L.L.C.
    Inventor: David C. Weiser