Patents Assigned to Pennwalt Corporation
  • Method and apparatus for grading non-orienting articles
    Patent number: 4645080
    Abstract: A method and apparatus for grading generally spherical articles, and specifically fruit such a oranges, which do not orient along a predetermined axis when rotated on a roller conveyor comprises a pair of side scan cameras disposed on opposite sides of the fruit. An overhead camera provides plural data signals representative of the surface quality of the fruit. The side scan cameras provide data indicative of the surface quality of side portions of the fruit. A processor and processing algorithm computes a surface quality indication based upon the data from the overhead camera and modifies the surface quality indication depending upon the data provided by the side scan cameras.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: February 24, 1987
    Assignee: Pennwalt Corporation
    Inventor: Stephen D. Scopatz
  • Stable oxidant alpha-amylase concentrates for use in baking
    Patent number: 4642237
    Abstract: Storage stable oxidant-amylase pre-mix or additive formulations, when added to wheat floor, dough or bakery mixes, produce improved bakery products having fine grain and good cell structure and volume.
    Type: Grant
    Filed: April 24, 1985
    Date of Patent: February 10, 1987
    Assignee: Pennwalt Corporation
    Inventors: Vincent A. De Stefanis, Robert W. Erickson, Peter M. Ranum
  • Piezoelectric polymeric film balloon speaker
    Patent number: 4638207
    Abstract: Piezoelectric polymer film, when conformably adhered to inner or outer curved surfaces of an inflated balloon, for example, acts as a speaker when the metallized coatings of the film are suitably connected to the output of an audio device. The film may be in the form of an helical strip, or individual strips elastically serially connected, or may itself form the inflatable material. Amplifying and impedance matching means may be interposed between the audio output and film coatings.
    Type: Grant
    Filed: March 19, 1986
    Date of Patent: January 20, 1987
    Assignee: Pennwalt Corporation
    Inventor: Peter F. Radice
  • Polyurethane foams from isocyanate, polyester polyol and chlorodifluoromethane
    Patent number: 4636529
    Abstract: Process for manufacture of polyurethane and poly(urethane/isocyanate) foams utilizing higher levels of aromatic polyester polyols in the polyol component through the substitution of CHClF.sub.2 for at least a portion of the conventional blowing agents to provide a foamed product of lower combustibility and lower brittleness.
    Type: Grant
    Filed: May 13, 1985
    Date of Patent: January 13, 1987
    Assignee: Pennwalt Corporation
    Inventor: Richard M. Crooker
  • Foaming of unsaturated polyester resin at elevated temperatures
    Patent number: 4636528
    Abstract: Low density foams are prepared from an admixture which comprises an unsaturated polyester resin, a free radical initiator which initiator is activated at temperatures from about 100.degree. to about 400.degree. F., and a compound selected from a t-alkylhydrazinium salt or a carbonylhydrazine. The low density foams have uniform cell structure without cracks or voids and the process is efficient.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: January 13, 1987
    Assignee: Pennwalt Corporation
    Inventors: Ernest R. Kamens, John P. Cassoni
  • Hydroxy-t-alkyl peroxyester
    Patent number: 4634753
    Abstract: Hydroxy-t-akyl peroxyesters having the general structure ##STR1## where R, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 can be alkyl moieties and having 10 hour half-life temperatures below about 75.degree. C. (for example, 3-hydroxy-1,1-dimethylbutyl peroxyneodecanoate) are used as initiators for vinyl monomer polymerization and as catalysts for curing unsaturated polyester resins in order to improve the efficiency of the systems.
    Type: Grant
    Filed: March 29, 1985
    Date of Patent: January 6, 1987
    Assignee: Pennwalt Corporation
    Inventor: Jose Sanchez
  • Scorch resistant, crosslinkable composition containing mixture of copper and metal dithiocarbamates
    Patent number: 4632950
    Abstract: A crosslinkable composition of a polymeric thermoplastic and/or elastomeric material which is susceptible to scorching when processed at elevated temperatures, prior to crosslinking, in the presence of a free radical initiator, is protected against such scorching by the incorporation therein of a mixture of at least two metal salts of disubstituted dithiocarbamic acid, wherein one metal salt is based on copper.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: December 30, 1986
    Assignee: Pennwalt Corporation
    Inventors: Chester J. Kmiec, Michael F. Novits
  • Solenoid driven metering pump supply voltage compensation circuit
    Patent number: 4633362
    Abstract: Circuitry is provided for use with solenoid driven apparatus, such as a metering pump, for example, which is typically powered by direct current from a full wave rectifier. The circuit compensates for variations in the supply voltage by adjusting solenoid "on-time" in substantially inverse relationship to the supply voltage by powering an RC charging network of an integrated circuit directly from the secondary of a transformer supplying power to the solenoid.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: December 30, 1986
    Assignee: Pennwalt Corporation
    Inventor: David N. Saunders
  • Means for electrically connecting electrodes on different surfaces of piezoelectric polymeric films
    Patent number: 4633122
    Abstract: Electrodes with leads deposited on different surfaces of a piezoelectric polymeric film or films are easily and quickly electrically connected by forming a continuous channel through the film and lead to form a pierced lead, and then applying an electrically conductive material, by any one of several known processes, onto the film over the channel to thereby form a connecting lead, the conductive material being permitted to penetrate the channel to effect a continuity of conductive material between the pierced lead and connecting lead.
    Type: Grant
    Filed: June 18, 1985
    Date of Patent: December 30, 1986
    Assignee: Pennwalt Corporation
    Inventor: Peter F. Radice
  • Piezoelectric polymer keyboard apparatus
    Patent number: 4633123
    Abstract: An embodiment of a non-contact electrical keyboard switch which completely resists EMI and eliminates cross-talk comprises a pair of electrically insulating substrates having rows and columns of openings therethrough. A poled piezoelectric PVDF film is adhered to each substrate over the openings. The films have silk-screened ground electrodes deposited on one surface and signal generating key electrodes deposited on the other surface in registration with the openings. Leads connecting individual rows of key electrodes on one film and individual columns of key electrodes on other film are disposed orthogonally. An insulating sheet separates the films which have their key electrode surfaces facing each other. Leads are connected to ground and/or suitable electrical connectors to provide the keyboard switch. Processes are disclosed for fabricating embodiments of the keyboard switch.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: December 30, 1986
    Assignee: Pennwalt Corporation
    Inventor: Peter F. Radice
  • Method for adjusting weight breaks reactive to changes in distribution of object weight
    Patent number: 4632254
    Abstract: A method of operating an article sorting machine automatically adjusts weight cutoff values defining size grades to compensate for variations in weight distribution of the articles. The method comprises the steps of monitoring the actual average weight of the articles classified into each size grade, periodically comparing the actual average weight of the articles classified into each size grade to values indicative of the desired average weight of the articles classified into each size grade, and modifying ones of the weight cutoff values if the actual average weight of the articles classified into selected ones of the size grades differs from the desired average weight of the articles to be classified into the selected ones of the size grades.
    Type: Grant
    Filed: December 12, 1984
    Date of Patent: December 30, 1986
    Assignee: Pennwalt Corporation
    Inventor: Stephen D. Scopatz
  • 1,4-oxazinone derivatives
    Patent number: 4631340
    Abstract: 1,4-oxazinone derivatives of the structure: ##STR1## wherein one of R and R.sup.1 is hydrogen and the other is --CH.sub.2 CO.sub.2 R.sup.6 (R.sup.6 .dbd.alkyl) or R and R.sup.1 together represent the group .dbd.CHCO.sub.2 R.sup.6, R.sup.2 and R.sup.3 are hydrogen, alkyl, substituted alkyl, phenyl or substituted phenyl or R.sup.2 and R.sup.3 together represent a single adamantyl group, and R.sup.4 and R.sup.5 are hydrogen, alkyl, substituted alkyl, phenyl, substituted phenyl, or benzyl, are disclosed herein.
    Type: Grant
    Filed: October 18, 1985
    Date of Patent: December 23, 1986
    Assignee: Pennwalt Corporation
    Inventors: Vassil S. Georgiev, George B. Mullen
  • Buoy lantern system
    Patent number: 4626852
    Abstract: Lantern employs clear lens protective cover around the drum lens and a clear dome over the solar panel mounted above the lens. A heavily damped gimbal supported by the lantern housing mounts the lens, lampchanger, and flasher above a bank of batteries suspended from the gimbal. The weight of the batteries aids in providing a righting moment to the gimbal when the marine buoy, atop of which the lantern is secured, is tilted or inclined for sustained periods due to current and/or wind. Interior of the lantern is readily accessible by merely pivoting upwardly an annulus supporting the lens cover, solar panel, and dome.
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: December 2, 1986
    Assignee: Pennwalt Corporation
    Inventor: Robert J. Dodge
  • N-(phenyl) or N-(phenylcyclopropyl)-2,5-dihydro-2-oxo-4[(substituted phenyl)amino]-3-furancarboxamide derivatives
    Patent number: 4625040
    Abstract: Compounds which possess antiallergy activity have the formula: ##STR1## wherein R is selected from phenyl and phenyl mono or disubstituted with lower alkyl, nitro, halogenated methyl, halogen, lower alkoxy and combinations thereof;wherein R.sup.1 is selected from hydrogen and lower alkyl; andwhere R.sup.2 is selected from phenyl, phenyl monosubstituted with lower alkyl, nitro, halogenated methyl, halogen, and lower alkoxy, and trans-phenylcyclopropyl in which the phenyl group may be substituted with lower alkyl or halogen.
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: November 25, 1986
    Assignee: Pennwalt Corporation
    Inventors: Vassil S. Georgiev, Robert A. Mack
  • Polymeric thiadiazole lubricant additive
    Patent number: 4618438
    Abstract: Method of preparing an oil soluble lubricant additive composition which includes forming a stable reaction product of a polymer of 3,5-dimercapto-1,2,4-thiadiazole, a polyalkylene succinimide, a fatty acid, and a mercaptan of 8 to 15 carbon atoms.
    Type: Grant
    Filed: April 3, 1985
    Date of Patent: October 21, 1986
    Assignee: Pennwalt Corporation
    Inventors: Sameeh S. Toukan, James P. King
  • Foamable polyvinylidene fluoride and methods
    Patent number: 4615850
    Abstract: Foamable and foamed polyvinlyidene fluoride materials prepared by compounding the PVDF with a suitable nucleating agent of discreet insoluble particles, a blowing agent having an activation temperature above the melting point of the PVDF, and a dispersing aid to provide a substantially homogeneous powdered mixture that is then melt compounded with high shear melt blending means and then extruded and quenched to provide the foamable polyvinlyidene fluoride material which can then be extruded as an insulating material on wire at a temperature sufficiently high to activate the blowing agent.
    Type: Grant
    Filed: July 16, 1984
    Date of Patent: October 7, 1986
    Assignee: Pennwalt Corporation
    Inventor: Roger L. Pecsok
  • 4,5-dihydro-4-oxo-2-[(2-trans-phenylcyclopropyl)amino]-3-furancarboxylic acids and derivatives thereof
    Patent number: 4614810
    Abstract: 4,5-dihydro-4-oxo-2-[(2-trans-phenylcyclopropyl)amino]-3-furancarboxylic acids and derivatives are described.
    Type: Grant
    Filed: September 24, 1984
    Date of Patent: September 30, 1986
    Assignee: Pennwalt Corporation
    Inventors: Vassil S. Georgiev, Robert A. Mack, Clyde R. Kinsolving
  • Foaming and crosslinking of elastomeric and/or thermoplastic polymers
    Patent number: 4607060
    Abstract: Crosslinked elastomeric and/or thermoplastic closed-cell foams having low densities are prepared from an admixture which comprises a crosslinkable thermoplastic and/or elastomeric polymer, a free radical initiator which is activated at temperatures from about 50.degree. C. to about 350.degree. C., and a t-alkylhydrazinium salt or a carbonylhydrazine.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: August 19, 1986
    Assignee: Pennwalt Corporation
    Inventors: Chester J. Kmiec, Michael F. Novits, Edward P. Hibbard
  • Gas-releasing composition for tailoring gas evolution of system IR 2811
    Patent number: 4607059
    Abstract: A gas-releasing composition of a t-alkylhydrazinium salt and/or a carbonylhydrazine and at least one compound selected from free radical forming sources, metal oxides, and sulfur and/or sulfur donor compounds wherein when sulfur and/or a sulfur donor compound is used, the composition will also contain one or more members selected from sulfur accelerators, metal oxides, and amino-alcohols. This novel gas-releasing composition permits the selectively tailoring of the gas evolution of a system in order to meet a wide range of specific application areas polymer characteristics and conditions over a wide temperature range.
    Type: Grant
    Filed: September 25, 1985
    Date of Patent: August 19, 1986
    Assignee: Pennwalt Corporation
    Inventors: Chester J. Kmiec, Michael F. Novits
  • Immunomodulatory 3-(substituted aminobenzoyl)-3,4-dihydrophthalazin-1(2H)-ones
    Patent number: 4604464
    Abstract: The novel compound, 3-(o-aminobenzoyl)-3,4-dihydrophthalazin-1(2H)-one and novel 3-(substituted aminobenzoyl)-3,4-dihydro-phthalazin-1(2H)-ones, such as 3-(o-methylaminobenzoyl)-3,4-dihydro-phthalazin-1(2H)-one and 3-(o-benzylaminobenzoyl)-3,4-dihydro-phthalazin-1(2H)-one; useful as immunomodulators; and processes for the synthesis of the compounds.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: August 5, 1986
    Assignee: Pennwalt Corporation
    Inventor: Robert J. Murray