Patents Assigned to Maryland Wire Belts, Inc.
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Patent number: 6732856Abstract: A modular conveyor belt assembly having a plurality of modular links, each of the modular links including a pair of first projecting legs and a pair of second projecting legs, the first projecting legs each having an inwardly projecting engagement element and the second projecting legs each having an engagement slot. The plurality of modular links are interconnected to form a conveyor belt through engagement of the engagement elements in the engagement slots.Type: GrantFiled: February 22, 2002Date of Patent: May 11, 2004Assignee: Maryland Wire Belts, Inc.Inventor: Robert E. Maine, Jr.
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Patent number: 6530469Abstract: A wire belt comprising having a plurality of wire strands, each of the plurality of wire strands being linked with at least one adjacent wire strand in the wire belt. Each of the plurality of wire strands includes a first end, a second end, and a plurality of linking portions between the first and second ends. The plurality of linking portions are linked with respective linking portions in at least one adjacent wire strand so as to form a plurality of joints in the wire belt. Each of the plurality of linking portions includes a compound Z-shape formation.Type: GrantFiled: January 16, 2001Date of Patent: March 11, 2003Assignee: Maryland Wire Belts, Inc.Inventor: George Howard Messick, Jr.
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Patent number: 6050394Abstract: Drive and related travel tension is decreased at selected locations in special purpose travel paths for woven-wire conveyor belts enabling decrease in tensile strength requirements of metal wire components as assembled into a woven-wire belt. Connector rod configurations with varying depth seats, at selected locations for individual helically-wound loops of interacting spiral wires, provide for expansion of belt length at selected locations where needed to decrease or eliminate metal wire component strain.Type: GrantFiled: January 6, 1997Date of Patent: April 18, 2000Assignee: Maryland Wire Belt, Inc.Inventors: Ronald G. Daringer, Richard A. Loeffler, Sr., H. William West
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Patent number: 6041916Abstract: A roll, along with methods of fabricating and using such roll, for driving a woven-wire conveyor belt, provide substantially-uniform drive across belt width, avoid disruption of belt drive, provide unidirection tracking of such belt, and avoid disruption of conveyed product during treatment of conveyed product at temperatures other than ambient. During conveyance of product for heating or cooling treatment, woven-wire conveyor belts and rolls driving such belts are often at differing temperatures, especially during start-up and shutdown of operations. Such temperature differentials can cause dimensional changes in a belt which change the relative location of belt recesses with respect to the roll surface. Selective shaping and dimensioning of roll protrusions from the widthwise center of a roll toward each lateral end of the roll eliminates mismatching of belt recesses due to changes in belt width during product processing at temperatures other than ambient.Type: GrantFiled: July 14, 1998Date of Patent: March 28, 2000Assignee: Maryland Wire Belts, Inc.Inventors: Ronald G. Daringer, Richard A. Loeffler, Sr., H. William West
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Patent number: 5816988Abstract: A roll, for driving a woven-wire conveyor belt, provides substantially-uniform drive across the belt width, avoids disruption of belt drive, provide unidirection tracking of the belt, and avoids disruption of conveyed products during treatment of conveyed products at temperatures other than ambient. During conveyance of a product for heating or cooling treatment, woven-wire conveyor belts and rolls driving the belts are often at differing temperatures, especially during start-up and shutdown of operations. Such temperature differentials can cause dimensional changes in a belt which change the relative location of belt recesses with respect to the roll surface. Selective shaping and dimensioning of roll protrusions from the widthwise center of a roll toward each lateral end of the roll eliminates mismatching of belt recesses due to changes in belt width during product processing at temperatures other than ambient.Type: GrantFiled: May 10, 1996Date of Patent: October 6, 1998Assignee: Maryland Wire Belts, Inc.Inventors: Ronald G. Daringer, Richard A. Loeffler, Sr., H. William West
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Patent number: 5590755Abstract: Method of manufacturing, assembling and fabricating a woven-wire belt with unitary vertically-oriented lateral edge flattened-wire helically-wound surfaces along each lateral edge for dynamic-frictional drive of the belt by a rotatable substantially-cylindrical drive surface in a helically-curved path, free of any mechanical drive connection while in the helical path. Lengthwise-directed tension control of the belt is exercised, while the belt is exterior to the helically-curved path, to achieve desired frictional drive contact within the drive surface. An exterior travel path for the belt between exit from and return to the helically-curved path provides an endless belt travel array.Type: GrantFiled: December 23, 1994Date of Patent: January 7, 1997Assignee: Maryland Wire Belts, Inc.Inventors: Ronald G. Daringer, Stephen D. Wilcox
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Patent number: 5562200Abstract: A weld-free belt is formed by inter-coupled modular assembly of individual unitary components including an elongated link portion and transversely-oriented connector which provides for self-coupling coaction forming an integral rod extending across the width of an assembled belt. The inter-locked components are articulated for relative rotational movement across the width of the belt facilitating orderly movement of an assembled belt around curved portions of an endless travel path. Dimensions of the components can be selected to determine the lengthwise-collected relative motion between inter-coupled unitary components to achieve desired travel in a substantially-horizontal curvilinear path, about a tower in stacked conveyor paths, with the internal-periphery lateral side of an assembled belt providing for dynamic frictional drive in the curved-path tower arrangement.Type: GrantFiled: March 25, 1994Date of Patent: October 8, 1996Assignee: Maryland Wire Belts, Inc.Inventor: Ronald G. Daringer
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Patent number: 5558204Abstract: Weld-free belt assembly in which elongated link modules are coupled in widthwise side-by-side relationship by transversely-oriented coupling modules. An internal cavity is defined within each link along with a surface configuration on each side of the link which defines an entry access portion for a coupler and slot portions for enabling relative longitudinal movement of the coupler while retaining the coupler within the internal cavity. The interfitting coaction of the links and couplers enables an assembled belt to move from linear planar travel into a curved path to establish an endless-belt configuration. The relative movement of couplers within a link cavity enables longitudinal collection of links along the inner circumference when the belt enters a curvilinear travel path in approximately the same plane and enables re-extension for return to linear travel.Type: GrantFiled: August 23, 1994Date of Patent: September 24, 1996Assignee: Maryland Wire Belts, Inc.Inventor: Ronald G. Daringer
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Patent number: 5375695Abstract: Fabricating method for an elongated woven-wire belt for direct-contact dynamic-frictional-drive along an inner perimeter lateral edge portion when the belt is moving in a path which is curved in a lateral direction with respect to its lengthwise direction. A curved path structure for support of such belt is disclosed along with methods of assembly and operation of curved path support structures. Lengthwise collection and extension uniformly across the width of the woven-wire belt is provided, along with selection of direction of movement providing for reversing direction of movement without requiring modification of the belt structure or curved path support structure. Provision is made for selectively controlling rates of movement of the woven-wire belt in a curved path support structure and for controlling rate of movement of the belt when exterior to a multi-layer curved-path tower structure.Type: GrantFiled: May 5, 1993Date of Patent: December 27, 1994Assignee: Maryland Wire Belts, Inc.Inventors: Ronald G. Daringer, Stephen D. Wilcox
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Patent number: 4491003Abstract: Methods and apparatus are disclosed for continuous-line fabrication of helically wound spirals of desired cross-sectional configuration, such as planar surface spirals, for assembly into conveyor belts. In-line wire shaping and handling procedures and apparatus enable consistently reliable production of uniformly shaped spirals at commercial production rates. Round wire from unsupported coils is shaped in line and controlled as directed to a winding mandrel. Orientation of the shaped wire about its central longitudinal axis, winding tension control, presetting a longitudinal camber in the shaped wire, and wire shaping control are used to compensate for changes in mechanical characteristics of the wire or wire diameter, which occur along the length of a coil, without affecting established winding machine parameters such as lead-in angle for the wire or longitudinal location along the mandrel for starting helical winding.Type: GrantFiled: June 23, 1981Date of Patent: January 1, 1985Assignee: Maryland Wire Belts, Inc.Inventors: George H. Messick, John C. Adkins
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Patent number: 4440367Abstract: A barrier-type metal wire fabric which is substantially free of transverse passages while providing desired travel path flexibility is disclosed along with methods and means for its manufacture. Shaped wire with at least two diametrically opposed planar surfaces is helically wound with a planar surface confronting the working surface of the winding mandrel. Left-hand wound and right-hand wound spirals are assembled with individual loop portions of each being nested within the loops of its next adjacent oppositely-wound spiral. A connector rod inserted within longitudinally overlapping internal loop portions of such spirals provides for pivotal relative movement between adjacent spirals and desired travel path flexibility while the dimensional relationships and assembly taught substantially eliminate non-rotational relative movement between metal wire elements of the fabric.Type: GrantFiled: June 13, 1983Date of Patent: April 3, 1984Assignee: Maryland Wire Belts, Inc.Inventor: Ronald G. Daringer
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Patent number: 4396041Abstract: A barrier-type metal wire fabric which is substantially free of transverse passages while providing desired travel path flexibility is disclosed along with methods and means for its manufacture. Shaped wire with at least two diametrically opposed planar surfaces is helically wound with a planar surface confronting the working surface of the winding mandrel. Left-hand wound and right-hand wound spirals are assembled with individual loop portions of each being nested within the loops of its next adjacent oppositely-wound spiral. A connector rod inserted within longitudinally overlapping internal loop portions of such spirals provides for pivotal relative movement between adjacent spirals and desired travel path flexibility while the dimensional relationships and assembly taught substantially eliminate non-rotational relative movement between metal wire elements of the fabric.Type: GrantFiled: January 23, 1981Date of Patent: August 2, 1983Assignee: Maryland Wire Belts, Inc.Inventor: Ronald G. Daringer
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Patent number: D443627Type: GrantFiled: August 15, 2000Date of Patent: June 12, 2001Assignee: Maryland Wire Belts, Inc.Inventor: H. William West