Patents by Inventor Mark W. Davidson
Mark W. Davidson 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: 7216758Abstract: A link is disclosed for a conveyor suitable for conveying objects along a transport direction. The link includes a body having a length extending across the direction of transport and a width extending along the direction of transport. The body has a conveying surface and two opposed gripping members extending from the conveying surface. Each gripping member is movable from a first opened position to a second gripping position. The gripping members each include a gripping arm configured to be pivotable relative to the conveying surface when the gripping members move from the first position to the second position. The gripping arms are located so as to be able to contact one of the objects when the gripping members are in the second position to hold the object relative to the link during transport. The link includes at least one spring member urging the gripping members toward the second position. Various other related options are disclosed, along with related conveyors.Type: GrantFiled: May 17, 2004Date of Patent: May 15, 2007Assignee: Hartness International, Inc.Inventors: Thomas P. Hartness, William R. Hartness, III, Mark W. Davidson, Frank Brennan, Robert C. Beesley
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Patent number: 7207434Abstract: A conveyor is disclosed suitable for conveying objects along a transport direction. The conveyor includes a plurality of connected links, each link having a length extending across the direction of transport and a width extending along the direction of transport. Each link has a conveying surface and at least one movable gripping member extending from the conveying surface of the link. Each gripping member is movable from a first opened position to a second gripping position. The gripping members each include a gripping arm having a pivot point, a gripping end spaced from the pivot point, and a cam follower extending outward from the gripping arm between the pivot point and the gripping end. The gripping arm is located so as to be able to contact one of the objects via the gripping end when the gripping member is in the second position to hold the object relative to the link during transport. Each link includes at least one spring member urging the gripping members toward the second position.Type: GrantFiled: September 23, 2004Date of Patent: April 24, 2007Assignee: Hartness International, Inc.Inventors: Thomas P. Hartness, William R. Hartness, III, Mark W. Davidson, Frank Brennan, Robert C. Beesley
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Patent number: 7114535Abstract: Continuous circular motion filling machine is provided for filling containers. The machine includes a rotating platform having an in-feed section disposed to receive empty containers and an out-feed section disposed to transfer filled containers from the rotating platform. A filling turret is disposed generally above the rotating platform and is rotatable at a speed corresponding generally to that of the rotating platform. The turret includes a plurality of filling elements movable between a rest position and a filling position as the turret rotates. Radially extensible and retractable indexing arms are spaced around the platform. The arms are at a retracted position at the in-feed section and are subsequently extended as the rotating platform rotates so as to index the containers into groups on the rotating platform between respective indexing arms. Each group of containers is arranged in a desired pattern and spacing between adjacent arms corresponding to a pattern and spacing of the filling elements.Type: GrantFiled: August 28, 2003Date of Patent: October 3, 2006Assignee: Hartness International, Inc.Inventors: Thomas P. Hartness, Mark W. Davidson
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Patent number: 7055677Abstract: A conveyor suitable for conveying objects along a transport direction, and related links, are disclosed. The conveyor includes a plurality of connected links, each link having a length extending across the direction of transport and a width extending along the direction of transport. Each link also has a body, a cam follower member, and at least one gripping member. A gear drive mechanism may be used to interconnect the cam follower member and the gripping member. The cam follower member is movable to selectively move the gripping member between a first position and a second position. The gripping member when in first position is disposed in an open position, and the gripping member when in the second position is disposed in a gripping position for contacting one of the objects to hold the object during transport. Gear-drive mechanisms of various designs may be used to interconnect the cam follower member and gripping member.Type: GrantFiled: March 30, 2004Date of Patent: June 6, 2006Assignee: Hartness International, Inc.Inventors: Thomas P. Hartness, William R. Hartness, III, Mark W. Davidson, Frank Brennan, Robert C. Beesley
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Patent number: 7055676Abstract: A conveyor suitable for conveying objects along a transport direction, and a related link are disclosed. The link may include a link body having a length extending across the direction of transport and a width extending along the direction of transport, each link body having a conveying surface. At least one gripping member is movably secured to the link body and has a gripping arm extendable from the conveying surface of the link body. Each gripping member is moveable between a first opened position and a second gripping position. The gripping arm is located so as to be able to contact one of the objects when the gripping member is in the second position to hold the object relative to the link body during transport. Various options for link designs are disclosed, including slidable and/or pivotable designs.Type: GrantFiled: November 13, 2003Date of Patent: June 6, 2006Assignee: Hartness International, Inc.Inventors: Thomas P. Hartness, William R. Hartness, III, Mark W. Davidson, Frank Brennan, Robert C. Beesley
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Patent number: 7036658Abstract: Various conveyor designs suitable for conveying objects along a transport direction and various related link designs are disclosed. The conveyor may include a plurality of the connected links. Each link may have a length extending across the direction of transport and a width extending along the direction of transport, a conveying surface, and at least one gripping member moveable along at least a portion of length of the link from a first position to a second position. The gripping member when in the first position is disposed below the conveying surface of the link, and the gripping member when in the second position is disposed above the conveying surface of the link for contacting one of the objects to hold the object during transport. Various designs of gripping members and related elements are disclosed, including spring loaded, cam driven, rack and pinion, and overhead designs. Various elements of the disclosed designs may be combined in various ways to form numerous link and conveyor options.Type: GrantFiled: November 13, 2003Date of Patent: May 2, 2006Assignee: Hartness International, Inc.Inventors: Thomas P. Hartness, William R. Hartness, III, Mark W. Davidson, Frank Brennan, Robert C. Beesley
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Patent number: 7021453Abstract: Various conveyor designs are disclosed, along with related link designs, suitable for conveying objects along a transport direction. The conveyor may include a plurality of connected links. Each link may have a length extending across the direction of transport and a width extending along the direction of transport. Each link may have a body, a slider, at least one gripping member, and a gear drive mechanism interconnecting the slider and gripping member. The slider is slidable along the length of the body to selectively move the gripping member between a first position and a second position via the gear drive mechanism. The gripping member when in first position is disposed in an open position, and the gripping member when in the second position is disposed in a gripping position for contacting one of the objects to hold the object during transport.Type: GrantFiled: November 13, 2003Date of Patent: April 4, 2006Assignee: Hartness International, Inc.Inventors: Thomas P. Hartness, William R. Hartness, III, Mark W. Davidson, Frank Brennan, Robert C. Beesley
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Patent number: 6883296Abstract: A case packing and case flap separation apparatus is disclosed for packing articles into cases and closing the cases. The cases typically have first and second major and minor flaps interconnected by tab-locks and held in folded positions adjacent vertical ends and sides of the cases. The apparatus includes a conveyor having a radial transport path adapted to transport successive cases through an article insertion section, first and second tab slitting sections, and a case exit section. Tab slitters are associated with the first and second slitting sections adapted to sever the tab-locks so that the major and minor flaps can be separated. First and second flap guides are associated with the first and second slitting section adapted to engage and elevate the separated major flaps away from the vertical walls after the tab-locks have been severed.Type: GrantFiled: August 8, 2003Date of Patent: April 26, 2005Assignee: Hartness International, Inc.Inventors: Thomas P. Hartness, William R. Hartness, III, Mark W. Davidson, Robert Leslie Dillard, David Lee Scott
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Publication number: 20040068956Abstract: A case packing and case flap separation apparatus is disclosed for packing articles into cases and closing the cases. The cases typically have first and second major and minor flaps interconnected by tab-locks and held in folded positions adjacent vertical ends and sides of the cases. The apparatus includes a conveyor having a radial transport path adapted to transport successive cases through an article insertion section, first and second tab slitting sections, and a case exit section. Tab slitters are associated with the first and second slitting sections adapted to sever the tab-locks so that the major and minor flaps can be separated. First and second flap guides are associated with the first and second slitting section adapted to engage and elevate the separated major flaps away from the vertical walls after the tab-locks have been severed.Type: ApplicationFiled: August 8, 2003Publication date: April 15, 2004Inventors: Thomas P. Hartness, William R. Hartness, Mark W. Davidson, Robert Leslie Dillard, David Lee Scott
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Patent number: 6533103Abstract: An apparatus for the transfer of articles is provided. The apparatus includes a first conveyor that moves in a first direction and a second conveyor that moves in a second direction opposite from the first direction. The second conveyor is spaced from the first conveyor. A transfer device is substantially disposed between the first and second conveyors. The transfer device includes a transfer plate that is used to transfer articles between the first and second conveyors. The transfer plate overlaps more of the second conveyor than the first conveyor. The transfer plate may be under the first conveyor and over the second conveyor, and the axis of revolution may be in the middle or offset from the middle between the conveyors.Type: GrantFiled: July 27, 2001Date of Patent: March 18, 2003Assignee: Hartness InternationalInventors: Thomas P. Hartness, Robert C. Beesley, Mark W. Davidson
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Publication number: 20030019726Abstract: An apparatus for the transfer of articles is provided. The apparatus includes a first conveyor that moves in a first direction and a second conveyor that moves in a second direction opposite from the first direction. The second conveyor is spaced from the first conveyor. A transfer device is substantially disposed between the first and second conveyors. The transfer device includes a transfer plate that is used to transfer articles between the first and second conveyors. The transfer plate overlaps more of the second conveyor than the first conveyor. The transfer plate may be under the first conveyor and over the second conveyor, and the axis of revolution may be in the middle or offset from the middle between the conveyors.Type: ApplicationFiled: July 27, 2001Publication date: January 30, 2003Inventors: Thomas P. Hartness, Robert C. Beesley, Mark W. Davidson
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Patent number: 6474464Abstract: A modular conveyor belt (20) constructed of a series of rows (24, 25) of belt modules hingedly interlined by tapered oblong hinge pins (22) and suitable for following straight or curved conveyor paths. Aligned slots (30) formed in one set of hinge elements between successive rows are elongated in the direction of belt travel to allow the belt to fan out in turns. Fan-shaped apertures (38) formed in interleaved hinge elements of an adjacent row and aligned axially with the slots to admit a hinge pin (22) allow the belt to pivot at the hinge to articulate about a sprocket (181) or idler (186) or to enter and exit an incline. The oblong hinge pin has a first region at a first end (88) with a constant long axis to share the belt load among hinge elements encompassing the first region on straight runs.Type: GrantFiled: November 21, 2000Date of Patent: November 5, 2002Assignees: The Laitram Corporation, Hartness InternationalInventors: Paul L. Horton, David W. Bogle, John C. Hawkins, Jr., William R. Hartness, III, Mark W. Davidson
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Patent number: 6334528Abstract: A variable-width spacer for use in a conveying apparatus includes a first link and a second link on opposite widthwise side of the spacer. The links can move relative to each other in a widthwise direction of the spacer to vary its width. The spacer can be used to fill a gap between adjoining members of a conveying apparatus, such as between two conveyor belts.Type: GrantFiled: June 16, 2000Date of Patent: January 1, 2002Assignees: The Laitram Corporation, Hartness InternationalInventors: David W. Bogle, Mark W. Davidson
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Patent number: 6119848Abstract: A conveyor drive unit is provided for engaging and driving a belt type conveyor. The unit includes a motor drive unit and drive chain assembly having a drive chain driven by the motor along a drive path. The drive chain has drive lugs configured thereon to engage with drive dogs on the conveyor as the drive chain is driven along the drive path. The drive path defines the drive angle with respect to a straight path of the conveyor along the drive path. An adjustable positioning device is disposed relative to the drive chain assembly such that upon variable positioning of the drive chain assembly, the drive angle defined between the drive path of the chain and the straight path of the conveyor along the drive path varies. In this manner, the degree of engagement of the drive lugs with the drive dogs of the conveyor along the drive path can be adjusted by varying the drive angle.Type: GrantFiled: January 22, 1999Date of Patent: September 19, 2000Assignee: Hartness InternationalInventors: William R. Hartness, III, Paul L. Horton, Mark W. Davidson, David W. Bogle, John C. Hawkins, Jr.
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Patent number: 5937995Abstract: A laner is disclosed for a case packing machine which divides scrambled articles into single files with reduced jamming, malfunctioning, and breakage. The laner includes lane dividers which are spaced to provide a plurality of lanes having parallel sections with entry openings wide enough to receive at least 3 articles in a side-by-side arrangement. The lanes terminate in single file lanes having a spacing generally equal to the width of one article. A tapered transition section extends between the parallel sections and the single file sections for feeding the articles into the single file lanes. A racking device is included in each lane upstream from the single file sections which projects laterally into the lane to impart a wedging and racking force and action to the articles that assist in their single file arrangement in the single file sections of the lanes.Type: GrantFiled: November 15, 1996Date of Patent: August 17, 1999Assignee: Hartness International, Inc.Inventors: Thomas Patterson Hartness, Mark W. Davidson