Patents Represented by Attorney, Agent or Law Firm R. L. Schmalz
  • Rescue board
    Patent number: 5862547
    Abstract: This invention relates to rescue boards that are constructed of several individual pieces. Such structures of this type, generally, allow the rescue personnel to extricate an unconscious or injured person from a confined space through a small opening and onto a backboard for transport to a medical facility.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: January 26, 1999
    Assignee: Westvaco Corporation
    Inventors: Charles Allen Bartley, Robert Burks Scruggs, II
  • Heat sealed, ovenable food cartons and lids
    Patent number: 5855973
    Abstract: This invention relates to paperboard packages or cartons suitable for distributing, marketing and heating prepared food products. Such structures of this type, generally, include a coating which is mass stable below 400.degree. F., has chloroform-soluble extractives not exceeding 0.5 mg/in..sup.2 of a food contact surface when exposed to a food simulating solvent of 150.degree. F. for two hours and is flexible enough to withstand conventional scoring in a cross-direction with a 2 point male rule and a 0.062 inch channel while sustaining a crack length ratio of no greater than 0.1 and exhibits resistance to blocking when stacked under a load at ambient conditions of 0.5 lbs/sq. in or greater.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: January 5, 1999
    Assignee: Westvaco Corporation
    Inventors: Barry Gene Calvert, Jack Ronald Hornsby
  • Lid having a cured overprint varnish
    Patent number: 5853860
    Abstract: Paperboard lids for containers comprising of a paperboard substrate, a coating of particulate minerals, a printed layer, and a radiation cured overprint varnish wherein the overprint varnish is mass stable and heat resistant above 325.degree. F. and does not distort or stick during platen heat sealing.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: December 29, 1998
    Assignee: Westvaco Corporation
    Inventor: Barry Gene Calvert
  • Container and blank for "duckbill" elimination
    Patent number: 5851630
    Abstract: This invention relates to a blank, which when formed into a gable-top container with an extensible pouring spout, eliminates "duckbilling" and allows the gable-top container to form more easily. Such structures of this type, generally, eliminate "duckbilling" or the folding out of the pouring spout through the use of reverse or inverted score lines located in the top of the gable-top container.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: December 22, 1998
    Assignee: Westvaco Corporation
    Inventor: Denny Earl Davis, II
  • Breakaway scraper blade assembly for a pelletizer
    Patent number: 5820893
    Abstract: This pelletizer relates to pelletizer systems of the type that include a scraper blade. Such structures of this type, generally, employ a removable, replaceable, breakaway scraper blade that can be changed out easily and quickly without damaging the remainder of the blade assembly.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: October 13, 1998
    Assignee: Westvaco Corporation
    Inventor: Harry Wilson Robertson, IV
  • Laminating machine register-length and web tension controller
    Patent number: 5813587
    Abstract: A cascaded loop controller is used to control register or repeat lengths and web tension on laminating machines where the inner control loop utilizes register-length sensors near the unwind end of the laminating machine to make rapid adjustments in web tension that are necessary immediately following a reel splice and an outer control loop that provides a remote register-length set-point to the inner loop based upon a desired repeat length as measured near the rewind end of the laminating machine.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: September 29, 1998
    Assignee: Westvaco Corporation
    Inventor: Richard Eric Nordgren
  • Debarking and chipping folded whole-trees
    Patent number: 5803142
    Abstract: This invention relates to debarking and chipping folded whole trees. Such structures of this type, generally, increase wood recovery by making high-quality chips out of tree tops, branches, as well as, other larger portions of the tree.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: September 8, 1998
    Assignee: Westvaco Corporation
    Inventors: David Dwight Mulligan, James Ernest Salyers
  • Method for heat sealing paperboard substrates using a uniform energy distributed light energy beam
    Patent number: 5792301
    Abstract: This invention relates to a method and apparatus for heat sealing polymer coated paperboard substrates with light energy. Such structures of this type, generally, use lasers which allow a very accurate placement of the sealing energy and a controllable energy level.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: August 11, 1998
    Assignee: Westvaco Corporation
    Inventors: Barry Gene Calvert, Ralph Scott Peterson
  • Continuous coater blade
    Patent number: 5782976
    Abstract: This invention relates to coater blades which are employed in papermaking machines. Such structures of this type, generally, employ a continuous coater blade located across the width of the papermachine which provides a new section of blade at desired rates or intervals.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: July 21, 1998
    Assignee: Westvaco Corporation
    Inventors: Michael Lawrence Marziale, Steven Paul Metzler
  • Composite package structure for containing articles and method for producing thereof
    Patent number: 5775512
    Abstract: This invention relates to paperboard and plastic composite package structures that combine an intricate thermoformed shell with a paperboard base or cover. Such structures of this type, generally, provide a lightweight package with a good printing surface on the outside of the package.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: July 7, 1998
    Assignee: Westvaco Corporation
    Inventors: Brad Allen Jones, Ralph Scott Peterson
  • Spouted bed wood chip debarker/cleaner
    Patent number: 5769330
    Abstract: This invention relates to a spouted bed wood chip debarker/cleaner. Such structures of this type, generally, cause wood chips and bark to undergo attrition by accelerating the wood chips and bark with a jet of air. In particular, the accelerated wood chips and bark are impinged on a screen. When the wood chips hit the screen, bark and wood chips experience attrition. Small pieces of bark and other debris (sand, for example) will be exhausted through the screen which is too fine of a mesh to let desirable size wood chips be exhausted.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: June 23, 1998
    Assignee: Westvaco Corporation
    Inventor: Donald Frank Rogowski
  • Moisture resistant frozen food packaging using an over-print varnish
    Patent number: 5766732
    Abstract: This invention relates to moisture resistant frozen food packaging using highly-sized paperboard and press applied moisture resistant over-print varnishes. Such structures of this type, generally, employ a moisture-resistant coating which is placed between the food product and the paperboard in order to provide a barrier for the food from the board and also to prevent the paperboard from absorbing moisture. Also, edge-wick moisture absorption is minimized by the use of the highly-sized sheet.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: June 16, 1998
    Assignee: Westvaco Corporation
    Inventor: Robinson Camden Perkins Claytor
  • Lumen loading of hygienic end use paper fibers
    Patent number: 5759349
    Abstract: This invention relates to the application of an optically active dye or fluorecent whitening agent within a paper fiber such that the dye or whitening agent does not migrate out of the fiber at a level of toxicological concern. Such processes of this type, generally, allow the dye or whitening agent to be used in hygienic end use applications.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: June 2, 1998
    Assignee: Westvaco Corporation
    Inventors: James Joseph Foster, Roger Wayne Ogden
  • Composite package structure for containing articles and method for producing thereof
    Patent number: 5755079
    Abstract: This invention relates to making paperboard and plastic composite package structures that combine an intricate thermoformed shell with a paperboard base or cover. Such structures of this type, generally, provide a lightweight package with a good printing surface on the outside of the package.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: May 26, 1998
    Assignee: Westvaco Corporation
    Inventor: Ralph Scott Peterson
  • Paperboard packaging with an improved sizing layer including a styrene maleic anhydride binder for reducing edgewicking
    Patent number: 5747141
    Abstract: This invention relates to substrates for paperboard packing with an improved sizing layer including a styrene maleic anhydride binder for reducing edgewicking. Such structures of this type, generally, reduce the edgewick in the paperboard package such that catastrophic failure of the paperboard package is substantially reduced.
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: May 5, 1998
    Assignee: Westvaco Copration
    Inventor: Robinson Camden Perkins Claytor
  • Rescue board
    Patent number: 5745938
    Abstract: This invention relates to rescue boards that are constructed of several individual pieces. Such structures of this type, generally, allow the rescue personnel to extricate an unconscious or injured person from a confined space through a small opening and onto a backboard for transport to a medical facility.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: May 5, 1998
    Assignee: Westvaco Corporation
    Inventors: Charles Allen Bartley, Robert Burks Scruggs, II
  • Actuator assembly for coater blade load adjustment
    Patent number: 5738724
    Abstract: This invention relates to load adjustment systems for coater blades. Such structures of this type, generally, employ the use of an actuator assembly to control cross-direction (widthwise) coatweight profiles.
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: April 14, 1998
    Assignee: Westvaco Corporation
    Inventor: Steven Paul Metzler
  • Printing press controller
    Patent number: 5735205
    Abstract: This invention relates to controllers for printing presses. Such structures of this type, generally, utilize information gathered at earlier production stages, such as, the crease register to improve the through put of later stages, such as, printing.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: April 7, 1998
    Assignee: Westvaco Corporation
    Inventor: Richard Eric Nordgren
  • Apparatus for heat sealing paperboard substrates using a uniform energy distributed light energy beam
    Patent number: 5690775
    Abstract: This invention relates to a method and apparatus for heat sealing polymer coated paperboard substrates using a uniform energy distributed light energy beam. Such structures of this type, generally, use lasers which allow a very accurate placement of the sealing energy and a controllable energy level.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: November 25, 1997
    Assignee: Westvaco Corporation
    Inventors: Barry Gene Calvert, Ralph Scott Peterson
  • Apparatus and method for analyzing paper surface topography
    Patent number: 5684707
    Abstract: This invention relates to an apparatus and method for identifying periodic roughness variations on a paper surface. Such devices of this type, generally, collect topography data from the paper surface, analyze the data, and compare the data with known signature topographies of paper machine clothing and equipment to determine the location in the paper manufacturing process where the periodic roughness variations on the paper surface are being produced.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: November 4, 1997
    Assignee: Westvaco Corporation
    Inventor: Donald Frank Rogowski