Patents Assigned to The Fredericks Company
  • Patent number: 7886451
    Abstract: Fabrication methods are provided for an electrolytic tilt sensor which includes a containment envelope defining an interior space; at least first and second electrodes disposed along, and in contact with, a first interior surface portion of the containment envelope, said first and second electrodes being spaced apart from each other to define a gap between respective opposing edges of the first and second electrodes; at least a third electrode disposed along and in contact with a second interior surface portion of the containment envelope opposite said first interior surface portion; an electrolyte solution at least partially filling the interior space of the containment envelope to provide a bubble; and means for hermetically sealing the containment envelope.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: February 15, 2011
    Assignee: The Fredericks Company
    Inventors: Andrew Ruether, Joseph J. Seipp, Jr.
  • Patent number: 6688013
    Abstract: An electrolytic tilt sensor is disclosed which comprises a containment envelope having a metallic container and a header, the envelope defining a chamber and having at least one pair of apertures, an electrolytic solution partially filling the chamber, and at least one pair of electrodes, each electrode including an electrically active, transverse portion positioned within the chamber in a general horizontal alignment with one another defining a tilt axis, and a lead portion extending to the exterior of the envelope through the respective aperture. The tilt sensor may further include a sealing material disposed in each aperture of the providing a substantial fluid-tight seal about the respective electrode.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: February 10, 2004
    Assignee: The Fredericks Company
    Inventor: Charles E. Greway
  • Patent number: 6453571
    Abstract: A thermocouple tilt sensing device comprises a container being substantially gas-tight, a first sensing wire having a first and a second end, and a second sensing wire, having a first and a second end. The first end of the first sensing element is electrically connected to the first end of the second sensing wire thereby forming a thermocouple junction. A heater wire is disposed adjacent the thermocouple junction and is connected to an AC or DC power source. The heater wire provides thermal energy which induces a DC output voltage in the thermocouple. The first sensing wire, second sensing wire and the heater wire are disposed within the sealed container. An angle of a device provided with a thermocouple tilt sensing device is determined by measuring the output voltage from the thermocouple junction and comparing it to a known output voltage curve associated with the thermocouple tilt sensing device.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: September 24, 2002
    Assignee: The Fredericks Company
    Inventor: Wallace R. Crossan, Jr.
  • Patent number: 6257069
    Abstract: A Bayard-Alpert gas pressure measuring gauge with x-ray effect neutralization comprising collector and shield electrodes that comprise the same substantially inert electrically conductive substances. Said inert substance may be gold or another substance from the group consisting of platinum and rhodium, and mixtures thereof, and alloys comprising gold, platinum or rhodium; or said substance may be selected from the group consisting of the oxides of indium, chromium, vanadium and tin, mixtures thereof, and alloys comprising one of these. An electrical potential is applied to the shield that is more negative than the potential applied to the collector, said potential on the shield being in the range from about zero volts to about −50 volts when the collector is operated at a positive potential. Said negative potential with respect to the collector enhances the reverse x-ray effect for cancellation of the forward x-ray effect in the gauge.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: July 10, 2001
    Assignee: The Fredericks Company
    Inventors: Howard M. Brady, Emil Drubetsky, Ronald H. Goehner, Bruce R. F. Kendall
  • Patent number: 6249984
    Abstract: An electrolytic tilt sensor and a method of assembling the tilt sensor. The tilt sensor includes a metallic envelope comprising a metal container and a metal header welded to the enclosure, hermetically sealing the envelope. The envelope defines a chamber that contains an electrolytic solution and a plurality of electrodes. The electrodes extending through the header from outside of the envelope into the chamber. Each electrode is located in a separate aperture within the header and is insulated from the envelope by an insulator located between the electrode and the header. The method of assembling the tilt sensor includes the steps of placing the electrolytic solution into the container through an opening, engaging the header with the opening and welding the container and header to one another to hermetically seal the envelope.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: June 26, 2001
    Assignee: The Fredericks Company
    Inventors: Barry E. Barsky, Lester E. Burgess, Francis R. Kull
  • Patent number: 5852878
    Abstract: An electrolytic toroidal tilt sensing device for electrical coupling to a measuring circuit, wherein the measuring circuit is responsive to the device and adapted to provide an output signal indicative of the tilting and direction of tilting associated with the device, includes: an electrolytic fluid; a housing body having a channel formed therein for containing the electrolytic fluid, the housing body serving as a common electrode when coupled to the measuring circuit; and a cover plate having two working electrodes with at least one electrode serving as a working electrode when coupled to an appropriate measuring circuit, the cover plate being to hermetically fitted in the channel of the housing body such that the cover plate and the housing body form a chamber wherein at least one electrode is at least partially immersed in the electrolytic fluid contained within the chamber.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: December 29, 1998
    Assignee: The Fredericks Company
    Inventors: Joseph J. Seipp, Jr., William R. Keller
  • Patent number: 5630280
    Abstract: A dual axis electrolytic tilt sensor is disclosed which includes a spherical enclosure that houses a plurality of electrodes partially immersed in an electrolytic solution. The electrodes have arcuate contact portions and the spherical inner surface of the enclosure defines a common electrode. When connected to an appropriate electrical circuit, the sensor produces a substantially linear output voltage in proportion to tilt angle.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: May 20, 1997
    Assignee: The Fredericks Company
    Inventor: Wallace R. Crossan, Jr.
  • Patent number: 5568053
    Abstract: A cold cathode ionization gauge includes a first and second electrode spaced apart and insulated from one another and having a common axis. A magnetic field generator surrounds the gauge and applies a non-time varying magnetic field along the common axis of the electrodes. The magnetic field generator includes at least one pair of opposed axially magnetized magnets adjacent each other. In one embodiment of the invention a non-magnetic annular spacer is placed between the opposed magnets. The magnet arrangement minimizes magnetic flux outside of the gauge while increasing the strength of the magnetic flux inside of the gauge. The magnetic arrangement also allows the gauge to be ignited in a very high vacuum, thereby extending the operating range of the gauge.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: October 22, 1996
    Assignee: The Fredericks Company
    Inventors: Emil Drubetsky, Donald R. Taylor, Jr.
  • Patent number: 5351551
    Abstract: A thermocouple vacuum gauge includes a first thermocouple element spaced below a second thermocouple element. The two thermocouple elements are electrically connected in series in a back-to-back manner by connecting together their respective negative ends. A pulse generator supplies a pulsing on-off current only to the first thermocouple element. During the off intervals, a switch connects the positive ends of both thermocouple elements to a voltage measuring and comparing circuit which measures a thermally generated voltage signal between the positive ends of the thermocouple elements and compares the measured voltage signal to a reference signal. The result of the comparison is used to vary the output current of the pulse generator so as to supply an amount of current to the first thermocouple element sufficient to cause the measured voltage signal to approach the reference signal.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: October 4, 1994
    Assignee: The Fredericks Company
    Inventors: Emil Drubetsky, Donald R. Taylor, Jr., Leonard Woshczyn
  • Patent number: 4731457
    Abstract: Analgesic and anti-inflamatory compounds of the formula ##STR1## wherein n=0-1,X=Halo, lower Alkoxy, HO--, Lower Alkyl, andR= ##STR2##
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: March 15, 1988
    Assignee: The Purdue Frederick Company
    Inventors: Bola V. Shetty, Arthur McFadden, Peter Hofer
  • Patent number: 4639529
    Abstract: Analgesic and anti-inflammatory compounds are provided. These compounds possess the following general formula: ##STR1## wherein R=--COOR.sub.5, --CH.sub.2 CO.sub.2 H, ##STR2## wherein A and B=hydrogen, lower alkyl, hydroxy alkyl, lower alkyl amine, substituted lower alkyl amine, aminoalkyl, substituted aminoalkyl;R.sub.5 =lower alkyl;R.sub.1 =aryl, substituted aryl, aralkyl, alkyl, hydrogen, substituted aralkyl and heterocycle;R.sub.2 =aryl, substituted aryl, aralkyl, alkyl, substituted aralkyl, heterocycle, substituted heterocycle, biphenyl, substituted biphenyl, naphthyl, and substituted naphthyl;R.sub.3 =aryl, substituted aryl, hydrogen, aralkyl, substituted aralkyl, alkyl, heterocycle and substituted heterocycle;R.sub.2 and R.sub.3 together form a ring;R.sub.4 =hydrogen, phenyl, substituted phenyl, heterocycle; alkyl, substituted alkyl; or, R.sub.1 and R.sub.4 may form a ring; ##STR3## --CH.sub.2 --; Y=--S--CHR.sub.4 --, --O--OHR.sub.4 --,--CHR.sub.4 --, --CR.sub.6 R.sub.7 --CHR.sub.4, ##STR4## wherein R.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: January 27, 1987
    Assignee: The Purdue Frederick Company
    Inventors: Bola V. Shetty, Arthur McFadden, Peter Hofer
  • Patent number: 4476311
    Abstract: Analgesic and anti-inflammatory compounds are provided. These compounds possess the following general formula: ##STR1## wherein R=--COOR.sub.5, --CH.sub.2 CO.sub.2 H, ##STR2## wherein A and B=hydrogen, lower alkyl, hydroxy alkyl, lower alkyl amine, substituted lower alkyl amine, aminoalkyl, substituted aminoalkyl;R.sub.5 =lower alkyl;R.sub.1 =aryl, substituted aryl, aralkyl, alkyl, hydrogen, substituted aralkyl and heterocycle;R.sub.2 =aryl, substituted aryl, aralkyl, alkyl, substituted aralkyl, heterocycle, substituted heterocycle, biphenyl, substituted biphenyl, naphthyl, and substituted naphthyl;R.sub.3 =aryl, substituted aryl, hydrogen, aralkyl, substituted aralkyl, alkyl, heterocycle and substituted heterocycle;R.sub.2 and R.sub.3 together form a ring;R.sub.4 =hydrogen, phenyl, substituted phenyl, heterocycle; alkyl, substituted alkyl; or, R.sub.1 and R.sub.4 may form a ring;X=>C.dbd.O, --CH.sub.2 --;Y=--S--CHR.sub.4 --, --O--OHR.sub.4 --, --CHR.sub.4 --, --CR.sub.6 R.sub.7 --CHR.sub.
    Type: Grant
    Filed: February 19, 1982
    Date of Patent: October 9, 1984
    Assignee: The Purdue Frederick Company
    Inventors: Bola V. Shetty, Arthur McFadden, Peter Hofer
  • Patent number: 4445626
    Abstract: A cylindrical container for viscous material has a first open base end of a first diameter and a spaced opposite closed base end with an opening therethrough of a second diameter smaller than the first diameter. A cylindrical plunger of a third diameter slightly smaller than the first diameter is coaxially slidably mounted in the container in a snug manner. The plunger has a closed plunger head perpendicular to its axis. A positioning device selectively positions the plunger and the container relative to each other at a plurality of different axial positions. The plunger, at each of the axial positions, forces a predetermined measured amount of the viscous material out of the opening of the container.
    Type: Grant
    Filed: February 10, 1982
    Date of Patent: May 1, 1984
    Assignee: The Purdue Frederick Company
    Inventors: Cliff Steffen, Nicholas P. Cappelli
  • Patent number: 4443616
    Abstract: Pyrrolidin-2-ones are produced by hydrogenation of 3-pyrrolin-2-ones, which latter compounds could not prior to this invention be easily obtained. These 3-pyrrolin-2-ones with various substituents are produced by ring closure of N-aroylmethyl-acetamides. The ring closure is effected in basic media under nitrogen.
    Type: Grant
    Filed: April 21, 1981
    Date of Patent: April 17, 1984
    Assignee: The Purdue Frederick Company
    Inventor: Peter Hofer
  • Patent number: 4420487
    Abstract: The invention relates to compounds which exhibit diuretic and antihypertensive properties and have the following structures: ##STR1## or pharmaceutically acceptable salts thereof, wherein: X=halogen or trifluoromethylY.sub.1 and Y.sub.2 =independently hydrogen, alkyl, acyl, aryl, substituted aryl or heterocycle,R.sub.1 =hydrogen, lower alkyl, aryl, substituted aryl, benzyl, substituted benzyl, aralkyl, heterocycle or substituted heterocycle,n=O or an integer from 1-4R.sub.2 =amino, substituted amino, guanidino, substituted guanidino, halogen, alkyl, substituted alkyl, aryl, substituted aryl or heterocycle, andR.sub.3 =hydrogen, lower alkyl, aryl, substituted aryl, benzyl, substituted benzyl, aralkyl, heterocycle, substituted heterocycle or acyl.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: December 13, 1983
    Assignee: The Purdue Frederick Company
    Inventors: Bola V. Shetty, Arthur McFadden
  • Patent number: 4395552
    Abstract: Antimicrobial compounds of the formulae: ##STR1## wherein R and R.sub.1 =H, lower alkyl, halogen, methoxy, hydroxy, nitro, carboxy, aryl (preferably phenyl) substituted aryl (preferably substituted by lower alkyl) and sulfamyl, R.sub.2 =hydrogen, lower alkyl, aryl (preferably phenyl) and substituted aryl (preferably substituted by lower alkyl) and wherein n is an integer from 2-20, are provided. Also provided are the method of producing such compounds.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: July 26, 1983
    Assignee: The Purdue Frederick Company
    Inventors: Bola V. Shetty, John E. Airey
  • Patent number: 4392492
    Abstract: Apparatus for storing and dispensing a medicated douche solution includes a sealed unitary packette as one of its components and which has a predetermined volume of liquid douche concentrate stored within a sealed interior volume defined thereby. The packette is formed of thin flexible plastic material and includes a container portion in which the douche concentrate is stored and a dispenser portion integral with the container portion and which is constituted by an elongated, small diameter tubular stem which has a constant transverse cross-section throughout its length and a separable terminal tip portion. The packette is openable through separation of the terminal tip portion from the dispenser portion whereupon the dispenser portion is inserted through an opening of a bottle containing a diluent so as to extend to a significant extent into the interior thereof. The concentrate is dispensed into the diluent by squeezing the container portion of the packette.
    Type: Grant
    Filed: July 10, 1981
    Date of Patent: July 12, 1983
    Assignee: The Purdue Frederick Company
    Inventor: Ernest Pick
  • Patent number: 4364929
    Abstract: Germicidal properties are provided for colloidal lubricating gels without destruction of the physical properties of the colloidal gel by the incorporation therein of an iodophor within strict limits as to the quantities and relative quantities of the iodophor-former, the iodine and the gel-forming colloid. These germicidal colloidal lubricating gels remain stable and retain their germicidal effectiveness. As a result, these compositions can be used for the lubrication of catheters and other instruments to facilitate their insertion into a body cavity and because these compositions do not cause pain or irritation their use reduces the risk of infection and tissue-trauma.
    Type: Grant
    Filed: April 30, 1980
    Date of Patent: December 21, 1982
    Assignee: The Purdue Frederick Company
    Inventors: Ernest J. Sasmor, Kenneth G. Rothwell
  • Patent number: 4309544
    Abstract: The invention relates to the production of compounds of the general formula: ##STR1## wherein X is selected from the group consisting of oxygen, CH.sub.2 and CH radicals, and when X designates oxygen, R designates alkyl, isoalkyl, aralkyl, and substituted aralkyl groups and when X designates CH.sub.2 then R designates alkyl, phenyl or substituted phenyl group, and A-B is a single bond, and when X designates CH.sub.2, R designates alkyl, phenyl or substituted phenyl groups and A-B is a double bond; and physiologically acceptable salts of these, and pharmaceutical composition containing the same as active ingredient.
    Type: Grant
    Filed: July 20, 1979
    Date of Patent: January 5, 1982
    Assignee: The Purdue Frederick Company
    Inventors: Sasson Cohen, Abraham Fisher
  • Patent number: D284088
    Type: Grant
    Filed: July 12, 1983
    Date of Patent: June 3, 1986
    Assignee: The Purdue Frederick Company
    Inventors: Erwig Pinter, Michael Oellerich, Gerhard W. Sybrecht