Patents Represented by Attorney E. Leigh Hunt
  • Patent number: 4764550
    Abstract: Tetrahalophthalate esters are disclosed herein as flame retardant processing aids for polyphenylene ether resins.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: August 16, 1988
    Assignee: Pennwalt Corporation
    Inventors: Ronald F. Lovenguth, Joseph M. Bohen
  • Patent number: 4762861
    Abstract: Tetrahalophthalate esters are disclosed herein as flame retardant processing aids for polystyrene resins.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: August 9, 1988
    Assignee: Pennwalt Corporation
    Inventors: Joseph M. Bohen, Ronald F. Lovenguth
  • Patent number: 4464849
    Abstract: Disclosed is an improved heated can roll of high thermal efficiency for web or sheet processing machines, such as a papermaking machine. The improved can roll has means for insulating the ends of the internally heated can rolls to provide a segmental heat insulating part spaced from the roll end or head to provide an air space adjacent to the head or roll ends, resulting in a large reduction in heat loss. Improved means for attaching the insulator assembly to the end faces of the can roll includes use of panel assembly bolts screwed into threaded bores provided within thickened bolt heads of the can roll head bolts.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: August 14, 1984
    Inventor: James E. Gamble
  • Patent number: 4348819
    Abstract: Disclosed is an improved heated can roll for papermaking machines having a high thermal efficiency. The improvement is in a means for insulating the ends of the internally heated can rolls to provide segmental heat insulating part spaced from the roll end or head to provide an air space adjacent to the head or roll ends, resulting in a large reduction in heat loss through natural convection, convection due to rotation, forced convection due to air draft, and radiation and resulting in a more uniform drying surface temperature.
    Type: Grant
    Filed: September 18, 1978
    Date of Patent: September 14, 1982
    Inventor: James E. Gamble
  • Patent number: 4321759
    Abstract: Disclosed is an improved heated can roll of high thermal efficiency for web or sheet processing machines, such as a papermaking machine. The improved can roll has means for insulating the ends of the internally heated can rolls to provide a segmental heat insulating part spaced from the roll end or head to provide an air space adjacent to the head or roll ends, resulting in a large reduction in heat loss through natural convection, convection due to rotation, forced convection due to air draft, and radiation and resulting in a more uniform drying surface temperature. Improved clip means using a body bolt adapter are provided for attaching the insulating means directly onto the existing head bolts holding the can roll head onto the cylindrical portion of the can roll.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: March 30, 1982
    Inventor: James E. Gamble
  • Patent number: 4126627
    Abstract: A process for preparing alkaline earth metal mercaptides in a two-step process, useful as synergists for organotin stabilizers in halogen containing resins such as polyvinyl chloride, comprising: (1) reacting a metallic oxide or hydroxide of the metal desired in the final mercaptide; a magnesium, aluminum or calcium alkoxide; and an alcohol to provide an alkoxide of the metal of the final mercaptide; and then (2) reacting the final alkoxide of (1) with a mercaptan to provide the desired metal mercaptide.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: November 21, 1978
    Assignee: Pennwalt Corporation
    Inventor: Gerald H. Reifenberg
  • Patent number: 4050163
    Abstract: Disclosed is an apparatus and process for drying grains in situ immediately after harvesting without having to remove the moisture-containing grain from the truck or bin in which it was collected in the field during harvest. Perforated duct means are located longitudinally throughout the bin near the substantially air impervious floor of the bin, and this, in conjunction with perforated side panels within the bin, allows for heated air under pressure within the duct to be forced laterally outwardly through the grain and through the perforated side panels wherein the moisture-containing hot air is then allowed to exit upwardly through a flue space defined by the perforated side panels and the normal side panels of the bin or the like.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: September 27, 1977
    Inventor: Clifton Stanley Short
  • Patent number: 3995362
    Abstract: Disclosed is a taper pin remover comprising a housing having one end adapted to receive a hub assembly containing a tapered pin with a portion of the tip of the pin protruding from the exterior of the hub, said housing having a drive pin screw means arranged to press the hub against the opposite side of the hub receiving end to force the protruding tip of the taper pin backwardly to release the taper pin from its tight engagement with the hub and shaft passing therethrough.
    Type: Grant
    Filed: March 25, 1975
    Date of Patent: December 7, 1976
    Inventor: Wayne C. Hall
  • Patent number: D243427
    Type: Grant
    Filed: August 27, 1975
    Date of Patent: February 22, 1977
    Inventor: William R. Watts