Patents Represented by Attorney Theodore B. Roessel

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  • Barium aluminum silicate filler for U.V. curable composites
    Patent number: 4192795
    Abstract: A single paste photopolymerizable dental restoration composition which utilizes a barium-aluminum-silicate glass filler material.
    Type: Grant
    Filed: September 29, 1977
    Date of Patent: March 11, 1980
    Assignee: Sybron Corporation
    Inventors: Narayanan Madhavan, Frank H. Freeman
  • Preheat circuit for X-ray tubes
    Patent number: 4191889
    Abstract: A circuit for use with a X-ray tube applies filament power to preheat the tube prior to the application of high voltage. The preheat duration is made to be in inverse relation to the line voltage. The desired result is when the tube starts to conduct the tube current and tube voltage is held within acceptable limits regardless of line voltage variations.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: March 4, 1980
    Assignee: Sybron Corporation
    Inventor: David Cowell
  • Body joint endoprosthesis
    Patent number: 4187559
    Abstract: A body joint endoprosthesis includes an anchoring member having a shaft anchored in a first bone and a pivot member connected to the anchoring member by a pivot joint. The pivot member includes a first body joint member and a support element that bears against a seating surface of the first bone. The first body joint member and a second body joint member, connected to the second bone, form the body implant joint.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: February 12, 1980
    Assignee: Sybron Corporation
    Inventors: Helmut Grell, Achim Engelhardt
  • Measuring sensor for capacitive measurement of liquids at selected levels
    Patent number: 4178623
    Abstract: The parts of a measuring sensor include an electrode mounted on a conductive body and insulated therefrom. Part of the electrical capacitance between the electrode and the body is determined by the dielectric constant and conductivity of the material in which the electrode and body are immersed. A screening band is provided along part of the length of the electrode so as to shield the electrode from the electrical effects of the material so that only selected levels of material will affect the capacitance.The sensor is ideal for use in enamelled steel vessels.
    Type: Grant
    Filed: April 17, 1978
    Date of Patent: December 11, 1979
    Assignee: Sybron Corporation
    Inventors: Bernd W. Emmerich, Rudolf Ehret, Gerhard Hoyer, Hans R. Trampert
  • Medical securement element with abrasive grains on thread surface
    Patent number: 4177524
    Abstract: A medical securement element with a self-tapping screw thread is provided with biocompatible abrasive grains at the surface of the thread. The grains are preferably embedded in a layer of porcelain enamel on a metal substrate.
    Type: Grant
    Filed: May 10, 1977
    Date of Patent: December 11, 1979
    Assignee: Pfaudler-Werke A.G.
    Inventors: Helmut Grell, Heinz Scharbach
  • Disposable dental tray
    Patent number: 4173219
    Abstract: Disclosed is a full dental tray for use in applying a fluoride gel simultaneously to both the upper and lower teeth. The tray is a disposable, laminated structure including a hydrophilic foam interior formed and heat bonded to a polyethylene foam substrate. The tray has upper and lower portions which are hinged together and are contoured to properly accommodate the particular tooth structure of the posterior and anterior teeth, and the general geometry of both the upper and lower jaws.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: November 6, 1979
    Assignee: Sybron Corporation
    Inventor: Frank N. Lentine
  • Feed distributor for glassed steel wiped film evaporator
    Patent number: 4173246
    Abstract: A glassed steel wiped film evaporator is provided with an improved feed distributor comprising a one piece circular non-metallic distribution chamber, attached to and rotating with the evaporator wiper assembly, and corrosion resistant feed conduits extending outwardly from said distribution chamber and terminating near the wall of the vessel. This distributor provides the efficiencies of distribution of previous flat plate alloy distributors; and at the same time it is of a sound construction that can be built at reasonable cost from commercially available fluorocarbon and other corrosion resistant materials.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: November 6, 1979
    Assignee: Sybron Corporation
    Inventors: Erwin J. Nunlist, James Mitchell
  • Method of making a disposable dental tray or the like by combining dissimilar foams
    Patent number: 4173505
    Abstract: Disclosed is a method of manufacturing a laminated plastic article such as a dental tray or the like having a hydrophilic foam formed and heat bonded to a polyethylene foam substrate. The dental tray has upper and lower portions hinged together, and contoured to properly accommodate the particular tooth structure of the posterior and anterior teeth and the general geometry of the upper and lower jaws. In a vacuum forming operation a laminated sheet is formed, the tray is appropriately contoured and the tray cut or blanked from the sheet.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: November 6, 1979
    Assignee: Sybron Corporation
    Inventor: I. Murray Jacobs
  • Apparatus for roto-molding
    Patent number: 4167382
    Abstract: Disclosed is apparatus for roto-molding, multi-layered plastic containers and the like.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: September 11, 1979
    Assignee: Sybron Corporation
    Inventors: Frank J. Freedman, Warren D. Fishbaugh
  • Measuring probe to determine the ion concentration in liquids
    Patent number: 4166020
    Abstract: A combination pH electrode uses an enameled steel structure. The reference electrode is replaceable and may be interchanged with a different type of electrode or a sealing plug.
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: August 28, 1979
    Assignee: Pfaudler-Werke A.G.
    Inventor: Hans R. Trampert
  • Sight glass assembly and method for its production
    Patent number: 4162826
    Abstract: A high impact sight glass assembly and production method are described, in which the glass lens is fused into an enamel coated metal ring such that the glass lens is fused to the enamel coating and the entire glass area is under compression. The glass lens is placed in the bore of a flange, and the lens and flange ring are heated, whereby the lens flows to conform to the bore of the flange and is fused to the enamel coating.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: July 31, 1979
    Assignee: Sybron Corporation
    Inventors: Roland R. Van der Beck, James W. Chapman
  • Housing assembly for barometer or other instrument having a settable index
    Patent number: 4154110
    Abstract: A barometer having an index on the crystal. The crystal is freely rotatable for setting the index. The barometer case has spring fingers preventing the crystal from being removed therefrom unless the fingers are disengaged by means of a suitable tool.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: May 15, 1979
    Assignee: Sybron Corporation
    Inventors: Edward L. Peart, Charlie J. Howard
  • Dental apparatus with instrument holder
    Patent number: 4151648
    Abstract: A dental apparatus retracts supply hoses connected to associated dental instruments. A coil spring is used within a housing. The hose is interposed between the windings of the spring. When the hose is extended, the radius of the coil contracts causing control switches to be activated. A ratchet engages dogs on the spring preventing unwanted retraction. Upon release of the ratchet, the coil spring expands drawing the hose into the housing.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: May 1, 1979
    Assignee: Sybron Corporation
    Inventor: Emil Hirth
  • Fluid pressure measuring or testing system and bleed regulation thereof according to schedule
    Patent number: 4146018
    Abstract: A sphygmomanometer system having a cuff, etc, and including both a regulator valve which normally bleeds the cuff pressure down at a substantially constant slow rate, and an exhaust valve which is operable to provide three rates of bleed, to wit nil, fast (as compared to the regulator valve bleed rate) and dump, the two valves together providing cuff bleed in accordance with predetermined schedule. The exhaust valve includes an elastic annular member compressible to achieve the fast and dump rates.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: March 27, 1979
    Assignee: Sybron Corporation
    Inventors: Clarence F. Aldridge, Donald H. Peeler
  • Temperature measuring device for enameled equipment
    Patent number: 4146865
    Abstract: An enameled steel cone is the support for a heat sensitive resistor element. The resistive element is arranged upon the enameled base of the cone and with a layer of enamel. A hollow shaft extends from the apex of the cone. Wires connected to the resistive element are fed through the body of the cone and through the hollow shaft. The assembly may be enameled in place or otherwise secured to a prepared structure such as a enameled steel vessel or member.
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: March 27, 1979
    Assignee: Pfaudler-Werke A.G.
    Inventors: Heinz Scharbach, Hans R. Trampert
  • Bleedable pressure system for measuring or testing
    Patent number: 4139000
    Abstract: A sphygmomanometric system having a pump for pumping air into a sphygmomanometer cuff connected to the cuff via a regulator valve for bleeding the cuff pressure at a constant rate. The pump has a leak to atmosphere so that the regulator valve can bleed the cuff through the pump. An exhaust valve is also provided for dumping the cuff pressure to atmosphere and/or bleeding the cuff, independently of the regulator valve.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: February 13, 1979
    Assignee: Sybron Corporation
    Inventor: Donald H. Peeler
  • Balancing mechanism for manhole covers
    Patent number: 4137669
    Abstract: A balancing mechanism for manhole covers uses two sets of conical disc springs, one stronger than the other, mounted on a common pull rod, to balance the cover as it moves from the open vertical position to the closed position. This provides a progressive spring force curve that balances the manhole in any position between the closed position and the vertical position. The balancing mechanism is also provided with an additional set of disc springs that absorb shock when the cover is opened rapidly. The mechanism is preferably mounted on a nozzle protection ring, which allows the system to be installed on existing glass lined vessels without welding, drilling or similar operations which might damage the lining.
    Type: Grant
    Filed: February 8, 1978
    Date of Patent: February 6, 1979
    Assignee: Sybron Corporation
    Inventor: Erwin J. Nunlist
  • Leveling agent for floor polishes
    Patent number: 4131585
    Abstract: A novel leveling agent for self polishing dry-bright floor polishes having the following general structure is described: ##STR1## where R is either a non-linear aliphatic hydrocarbon or mixture of hydrocarbons containing 8 to 15 carbon atoms or an alkylbenzene moiety containing 8 to 12 carbon atoms in the alkyl chainA is either Oxygen or Sulfur atomR.sub.1 is either Hydrogen atom or CH.sub.3R.sub.2 is either Hydrogen atom or CH.sub.3a and b are small numbers or average numbers totaling no more than about 7 so that the solubility of the compounds is less than about 0.4% in water at room or application temperature, but when R is alkylbenzene moiety, A is oxygen atom only and R.sub.1 and R.sub.2 are hydrogen atoms only.
    Type: Grant
    Filed: April 21, 1978
    Date of Patent: December 26, 1978
    Assignee: Sybron Corporation
    Inventor: Robert Feigin
  • Fluid pressure measuring or testing system and bleed regulator valve therefor
    Patent number: 4130114
    Abstract: A sphygmomanometric system having a cuff, etc., and regulator valve for bleeding air out of the sphygmomanometer cuff so that the cuff pressure drops at a substantially constant rate. The valve is in the form of a closed rubber tube having a slit with a pin holding the slit slightly open. Air can therefore be freely pumped into the tube, out the slit and into the cuff, but cannot flow back except at a restricted rate.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: December 19, 1978
    Assignee: Sybron Corporation
    Inventor: Donald H. Peeler
  • Electrodialysis of pickle liquor
    Patent number: 4128465
    Abstract: The invention describes an electrodialytic (ED) process of converting soluble metal sulfates from a pickle liquor into insoluble metal oxides. The pickle liquor stream entering the pickle liquor chamber of ED apparatus under turbulent flow conditions is excited by acoustic energy causing the insoluble oxide to remain in suspension thus preventing the depositing of precipitate on the membrane and environs.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: December 5, 1978
    Assignee: Sybron Corporation
    Inventor: Richard N. Smith