Patents Represented by Law Firm Fischer, Tachner & Strauss
  • Patent number: 4451101
    Abstract: A combination cover plate and safety guard plate to be interfaced with a conventional electrical wall receptacle to prevent a child of tender years from gaining unauthorized access to the receptacle and sustaining serious injury from an electric shock as a consequence of an accidental contact with a current carrying wire. The cover plate is adapted to receive one or more of the electrical receptacles, so that the power can be supplied therefrom to an electrical appliance, or the like. The cover plate and safety guard plate are pivotably interconnected with one another at first ends thereof. Each of the second ends of the cover plate and safety guard plate includes respective spring-biased retaining means by which the cover and safety guard plates can be releaseably connected together. Accordingly, the safety guard plate may be rotated towards the cover plate and secured in a position across the face thereof, whereby to cover the receptacles and prevent unauthorized access thereto.
    Type: Grant
    Filed: June 21, 1982
    Date of Patent: May 29, 1984
    Inventor: Thomas A. Davis
  • Patent number: 4444714
    Abstract: There is disclosed a stable liquid gel of colorants useful for incorporation in thermoplastic and thermosetting resins. The liquid gel comprises a liquid vehicle which is a plasticizer for the resins and which is gelled by an organophilic, expanding lattice clay which is ion exchanged with alkyl ammonium ions. Preferably the gel is modified by the addition of certain hydroxyalkyl fatty amines or fatty imidazolium quaternaries. The clay is employed at a sufficient concentration to form a stable gel and is milled into the liquid vehicle to form a pre-gel of substantially lesser than the final, desired viscosity. Solid, subdivided colorants are blended into the pre-gel at a concentration from 10 to about 70 weight percent and the resultant mixture is milled to the final desired viscosity.
    Type: Grant
    Filed: June 24, 1982
    Date of Patent: April 24, 1984
    Assignee: American Organics Corporation
    Inventor: Irvin W. Martenson
  • Patent number: 4443520
    Abstract: There is disclosed a method of coating combustible material such as wood, plywood, shingles and the like with a flameproofing composition. The method employs a flame coating composition which is a mixture of a thermoplastic, ambient-temperature, film former such as a polyvinyl acrylic acetate latex, and alumina trihydrate and glass fibers. The ambient temperature film former is a conventional latex used for coating compositions and should have the property of softening at or below the dehydration temperature of alumina trihydrate (about 280 degrees F.) and be capable of forming a stable foam at such temperatures. The alumina, which comprises the major portion of the coating composition, dehydrates when subjected to flame temperatures and the water vapor released from the alumina forms a stable foam.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: April 17, 1984
    Inventor: Charles H. Braithwaite, Jr.
  • Patent number: 4439876
    Abstract: An apparatus for securing flexible interconnecting pipes primarily in a whirlpool bathtub or spa assembly and comprising an improved venturi fitting having a snap-in bracket for receiving an elongated semi-flexible rod around the outer periphery of the tub wall and a plurality of primary pipe support brackets each also having such a snap-in bracket and a pair of C-shaped retainers for receiving the air and water flexible pipes interconnecting the venturi fittings. The rod support brackets may be provided with an optional interconnecting member for receiving an additional C-shaped secondary bracket providing means for supporting additional flexible pipes such as the suction and drain lines of a whirlpool bathtub assembly.
    Type: Grant
    Filed: January 4, 1982
    Date of Patent: April 3, 1984
    Inventor: Philip E. Chalberg
  • Patent number: 4438165
    Abstract: Simulated stained and leaded glass windows which include bonded lead strips onto a pane of glass or plastic, forming design segments, and bonded coatings to the pane coincidental with the design segments simulating colored glass, and to a method for their preparation.
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: March 20, 1984
    Assignee: Stained Glass Overlay, Inc.
    Inventor: Donald R. Butler
  • Patent number: 4436277
    Abstract: There is disclosed a pinch valve of greatly improved performance. The pinch valve has a housing with end plates having apertures forming a through passageway to receive a flexible conduit. The housing is split through the apertures of the end plates, into two halves, forming upper and lower saddles that are detachably interconnected to permit assembly of the housing about a flexible conduit, thereby eliminating cutting or breaking of the flexible conduit to insert or to relocate the pinch valve. The upper half of the housing carries a stationary bar or anvil and a circular cam actuator moves the valve member through a complete, 360 degree, rotation in a sinusoidal action movement. This action gives the valve a great mechanical advantage at shutoff position, permitting use of a small, lightweight valve structure.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: March 13, 1984
    Inventors: Edward Robak, Carter K. Reh
  • Patent number: 4435030
    Abstract: There is disclosed a soap bar holding and dispensing device which comprises a housing having a top, sidewalls and an open bottom with a soap bar rack pivotally mounted within the housing. The rack is formed by at least one leg having a distal, laterally projecting foot which, when the arm swings to a closed position, engages beneath the soap bar to secure the bar within the housing. The housing also includes at least one rib on an inside sidewall in juxtaposition to the leg and projecting to the leading edge of the foot when the rack is pivoted into its open position, thereby stabilizing the soap bar when the rack is moved to its open position and permitting the soap bar to fall from the dispensing device into one's hand.
    Type: Grant
    Filed: July 14, 1981
    Date of Patent: March 6, 1984
    Inventor: James T. Haven
  • Patent number: 4434142
    Abstract: There is disclosed a method for the treatment of aluminum dross oxides which contain aluminum metal, aluminum carbide, aluminum nitride and salts such as potassium and sodium chloride. The method comprises the thermal treatment of an aqueous suspension of the dross oxides with agitation in the presence of a particulate grinding medium. The method is practiced in a stirred reactor vessel which contains a bed of refractory, ceramic balls that are agitated with a slurry to provide a sufficient abrading action on the aluminum metal particles to remove the aluminum hydroxide coating and continually expose the aluminum metal for reaction with the water. This invention comprises the introduction of a purge gas into the suspension, preferably air, during its thermal treatment to reduce the formation of foam during the treatment and to assist in liberation of ammonia formed by the decomposition of the aluminum nitride.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: February 28, 1984
    Assignee: Imperial West Chemical Company
    Inventor: John A. Huckabay
  • Patent number: 4432462
    Abstract: A reliable and low cost indicator to be associated with a receptacle filled with dosage forms (e.g. over-the-counter drugs) and a corresponding method by which to quickly and easily warn a consumer that an unauthorized tampering may have occurred to the receptacle and the contents thereof. The tampering indicator is preferably either attached to or integrally formed with a seal at the underside of a removable receptacle cap. The tampering indicator comprises a fluid filled reservoir, a tab having a chemically treated indicator strip thereat, and a fluid path by which fluid from the reservoir communicates with the indicator strip. The indicator is engaged by the rim of the receptacle when the cap is positioned thereover by the dosage form manufacturer. Accordingly, fluid is forced from the reservoir into the fluid path. However, the fluid path is initially blocked at the engagement thereof by the receptacle rim.
    Type: Grant
    Filed: October 18, 1982
    Date of Patent: February 21, 1984
    Inventor: Randall A. Newkirk
  • Patent number: 4431948
    Abstract: An apparatus for reducing the voltage applied to a load in an AC system utilizes an autotransformer and a relay or equivalent switching device between the common winding and the series winding. In each of the AC lines, the common winding and relay are connected between the load and the AC common while the series winding is connected between the input and the output. The relay is normally open to pass substantially full input voltage to the load, but when closed the relay permits current flow in the common winding to reduce voltage to the load. The relay or equivalent switching is therefore not in the direct flow of load current and can be of lower current rating and smaller size and cost as compared to prior art voltage reduction systems.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: February 14, 1984
    Assignee: Standun Controls, Inc.
    Inventors: Delbert E. Elder, Gerald F. Forder, Albert J. Donnelly
  • Patent number: 4431675
    Abstract: The invention is a sugar solution-based, preferably molasses-based, animal feed supplement which is produced as a viscous liquid that is gelled into a hard solid by the addition of a soluble calcium salt or oxide, preferably calcium oxide, a soluble phosphate, and a substantial quantity of magnesium oxide. Prior to its solidification a limited amount of discrete cellulose fibers can also be added to reinforce the solid and prevent its cracking. The solid product is hard and water resistant and has a limited consumption rate.
    Type: Grant
    Filed: November 15, 1982
    Date of Patent: February 14, 1984
    Inventors: Jack J. Schroeder, John E. Findley
  • Patent number: 4425991
    Abstract: There is disclosed an improved automotive clutch utilizing a clutch cover assembly having a conventional conical spring diaphragm which develops the axial force for loading of the pressure plate and which is modified in accordance with the invention to utilize centrifugal weights which increase the force applied to the pressure plate with increasing engine speed.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: January 17, 1984
    Inventor: Bill J. Hays
  • Patent number: 4422720
    Abstract: There is disclosed an image orientation and projection system for use with stereoscopic viewing and projection systems.The preferred embodiment utilizes a stereoscopic viewing system of one or two prisms, preferably each having a plano face and an opposite face bearing a plurality of spaced-apart, straight and parallel V-grooves. Reflective surfaces are positioned in relation to said prisms to permit the employment of left and right stereoscopic images in their normal (left - right) and unreversed orientation to each other.
    Type: Grant
    Filed: October 9, 1980
    Date of Patent: December 27, 1983
    Inventors: David M. Sheiman, Elliot A. Rudell
  • Patent number: 4417212
    Abstract: A method of measuring relatively small amounts of saturated hydrocarbon oil in an essentially nonconductive liquid, comprises the steps of mixing the oil and liquid with a conductivity additive such as colloidal metal-containing particles to render the oil conductive without rendering the nonconductive liquid conductive and then measuring an electric current passed through the mixture to obtain an indication of the amount of oil in the mixture. The metal-containing particles may for example be selected from the group consisting of chromium dicarbide, chromium silicide and silver peroxide.
    Type: Grant
    Filed: July 8, 1981
    Date of Patent: November 22, 1983
    Inventor: Robert A. Baum
  • Patent number: 4413619
    Abstract: There is disclosed a portable cervical collar formed of an elongated band of stiff, flexible sheet material which can be formed into a cylindrical collar. The collar includes a chin support brace which is a generally C-shaped flat sheet that can be attached with its opposite ends secured to opposite sides of the formed collar thereby forming a concave, forwardly projecting support shelf to immobilize the wearer's chin. The collar is intended as a portable, compact collar for field use by paramedics and the like during transportation and initial examination of a patient.
    Type: Grant
    Filed: October 16, 1981
    Date of Patent: November 8, 1983
    Inventor: Geoffrey C. Garth
  • Patent number: 4413518
    Abstract: A bolt elongation measurement apparatus and method for measuring the length of bolts of all sizes and shapes. The apparatus utilizes a microprocessor-based digital system including a binary counter which counts pulses generated by a high frequency oscillator during the time interval between the entry into the bolt of a first pulse and exit from the bolt of a second pulse derived from the reflection return of ultrasonic energy from the opposite end of the bolt. The count is applied to a computer for calculation of bolt length or of bolt stretch due to mechanical stress. The calculation also incorporates data input via thumbwheel switches and corresponding to material velocity, stress correction factor, measurement temperature, and thermal correction factor. A unique digital filtering algorithm ensures an accurate and stable measurement.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: November 8, 1983
    Assignee: NDT Instruments, Inc.
    Inventor: Robert L. Jones
  • Patent number: D272044
    Type: Grant
    Filed: May 5, 1981
    Date of Patent: January 3, 1984
    Inventor: Thomas E. Fesler
  • Patent number: D273176
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: March 27, 1984
    Inventor: Thomas R. Abbott
  • Patent number: D274678
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: July 17, 1984
    Assignee: Bench Ad Company
    Inventors: Stanton H. Groman, Robert K. Hisel
  • Patent number: D279851
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: July 30, 1985
    Inventor: Michael A. Willis