Abstract: A process for the manufacture of acrylic acid comprising reacting propylene and oxygen (preferably in the form of air) in a reaction zone having a catalyst characterized by the following formula:
AaBbCcCadFeeBifMo12Ox
where
A=one or more of Li, Na, K, Rb and Cs
B=one or more of Mg, Sr, Mn, Ni, Co and Zn
C=one or more of Ce, Cr, Al, Sb, P, Ge, Sn, Cu, V and W
and
a=0.01 to 1.0; b and e =1.0-10
c=0 to 5.0, preferably 0.05 to 5.0, especially preferred being 0.05 to 4.0
d and f=0.05 to 5.0, and x is a number determined by the valence requirements of the other elements present;
at an elevated temperature to produce acrylic acid and acrolein.
Type:
Grant
Filed:
December 8, 1998
Date of Patent:
July 31, 2001
Assignee:
The Standard Oil Company
Inventors:
Dev Dhanaraj Suresh, Christos Paparizos, Patrick Eugene Mosier, Ying Wu, Maria Strada Friedrich, Michael J. Seely
Abstract: A method of controlling an expansion valve including the steps of: measuring a primary system condition; determining an error in the primary system condition; measuring a secondary system condition; determining an error in the secondary system condition; and modulating the expansion valve based upon the larger of the first or second error.
Type:
Grant
Filed:
January 10, 2000
Date of Patent:
July 31, 2001
Assignee:
American Standard International Inc.
Inventors:
Jonathan M. Meyer, Lee L. Sibik, Sean A. Smith
Abstract: In a battery case mounted on electronic equipment, the thickness of the battery case is reduced as obtaining the holding force of batteries with respect to vibration and impact by use of a case main body with a simple structure and a case cover.
Abstract: In a bandwidth-limiting apparatus, control is performed of the oscillation frequencies of each of three local oscillators of three intermediate-frequency circuits, and the passband is limited by adjusting the width of and shifting the IF, the intermediate frequency at the last stage being converted by a frequency conversion means to a low frequency suitable for processing, which is then bandwidth limited by a filter function of a digital signal processor. Control of each passband is performed in linked fashion by control stored in a microcomputer circuit, and the sharp shape factor of the digital signal processor is effectively used to eliminate noise from the deviation passband. Because noise is eliminated before the detection stage, there is no cause for the intrusion of wraparound noise, thereby eliminating the necessity to perform excessive bandwidth limiting.
Abstract: A heat exchanger within a sheet metal enclosure includes mounting structure that provides double vibration isolation to minimize noise. The mounting structure includes at least one resilient vibration isolator that couples the heat exchanger to a vibration isolation plate, and includes other similar isolators that couple the plate to the enclosure. The mass of the plate is sufficient to somewhat emulate a dual mass/spring system having two degrees of freedom. To this end, the plate is preferably thicker than the sheet metal walls of the enclosure. The double vibration isolated heat exchanger is especially applicable to systems having several heat pumps that are mounted overhead. In some embodiments, the heat pump's refrigerant compressor is also resiliently mounted to the vibration isolation plate.
Abstract: An air conditioning unit. The unit comprises a housing having a first side, a second side, a return air end wall, a supply air end wall, a return air interior, a supply air interior and a heat exchange coil operably connected to the first and second sides and separating the return air and supply air interiors. The first side includes a return air aperture and a supply air aperture, and the second side includes a return air aperture and a supply air aperture. The supply air end wall includes a supply air aperture wherein the supply air and return air apertures are of identical configuration. The air conditioning unit also includes chamfered corners, and a hanger assembly and a U-shaped channel bracket located at each chamfered corner.
Type:
Grant
Filed:
April 26, 2000
Date of Patent:
July 17, 2001
Assignee:
American Standard International Inc.
Inventors:
Mark E. Smith, Howard W. Newton, Armando A. Villafana
Abstract: The invention is a method for the reduction of ammonia breakthrough during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propane and isobutane; ammonia and an oxygen-containing gas into a lower portion of a fluid-bed reactor containing an ammoxidation catalyst to react in the presence of said catalyst to produce acrylonitrile. The method comprises introducing into the reactor at least one C2 to C5 olefin which will react with at least a portion of the unreacted ammonia and oxygen present in the reactor to substantially reduce the amount of ammonia present in the reactor effluent exiting the reactor.
Type:
Grant
Filed:
August 7, 2000
Date of Patent:
July 17, 2001
Assignee:
The Standard Oil Company
Inventors:
James F. Brazdil, Jr., Joseph P. Padolewski
Abstract: A method of controlling a variable speed draft inducer motor and fan in a gas furnace. The method comprises the steps of: detecting a first fault driving the motor to a maximum operating range; detecting a second fault forcing the motor to operate towards a minimum operating range; and generating a fault signal if both faults are detected substantially simultaneously.
Type:
Grant
Filed:
December 21, 1998
Date of Patent:
July 10, 2001
Assignee:
American Standard International Inc.
Inventors:
G. Jeffrey Hugghins, Robert W. Helt, Leonard W. Holmes, James T. Vershaw, Timothy W. Storm
Abstract: A thermally imagable business record, such as a form, label, tag, or the like is provided which may be activated to form human and/or machine readable images as well as different colored images. The record comprises a substrate having a thermally imagable coating on substantially its entire surface which forms a first color when activated, and having a desensitized area on at least one area of its surface which may be overcoated with a thermally imagable coating capable of forming a different color upon activation than the first thermally imagable coating. The first thermally imagable coating provides images which are of machine readable quality, while the additional thermally imagable coatings provide images of a different color to designate selected areas on the form or label to a user.
Type:
Grant
Filed:
December 8, 1999
Date of Patent:
July 10, 2001
Assignee:
The Standard Register Company
Inventors:
Rajendra Mehta, Gary Doll, Mark Dotson, A. Dale Lakes, Rick L. Shields
Abstract: A heated high pressure air and/or a high pressure water are spouted through nozzles. Therefore, the coated layer is removed without crushing the bumper unlike in the conventional method, and therefore, a plurality of process steps can be skipped. Thus the bulk of the apparatus can be reduced, the operating cost can be lowered, and the environment can be protected. The method for removing a coated layer includes the step of installing a bumper to be subjected to a removal of the coated layer. Then the coated layer is removed from the bumper by spouting water and/or a pre-heated air to the bumper. Then the bumper is carried to a predetermined psition after removing the coated layer, and then the bumper is detached. The apparatus includes an installing/detaching means for installing/detaching the bumper to be subjected to a removal of the coated layer.
Type:
Grant
Filed:
November 2, 1999
Date of Patent:
July 10, 2001
Assignees:
Hyundai Motor Company, Agency for Technology and Standards, MOCIE
Inventors:
Hyong Ki Choi, Yong Moo Lee, John Hee Hong, Yang Soo Lim
Abstract: A hermetic reciprocating compressor employs a motor end cap through which suction gas passes in heat exchange contact with the compressor drive motor enroute to the compressor. The end cap has a suction gas aperture and employs apparatus for preventing the entry of debris thereinto and defines a closeable aperture through which the gap between the rotor and stator of the compressor drive motor is accessible during the compressor manufacturing process.
Type:
Grant
Filed:
September 2, 1998
Date of Patent:
July 3, 2001
Assignee:
American Standard Inc.
Inventors:
W. J. Sonnier, Jr., Kendall D. Davenport
Abstract: A security document is prepared by designating specialized tiling elements to be printed in selected image element cells across the face of the document. In accordance with one embodiment of the present invention, a method of preparing a security document is provided comprising the steps of: (i) designating a security image area on a face of a document; (ii) dividing the security image area into a plurality of image element cells, such that the image element cells define an array of image element cells across the security image area; and (iii) designating respective printed tiling elements to be printed in selected ones of the image element cells to define a printed security image and a printed complementary security image within the security image area. Individual ones of the respective printed tiling elements comprise printed units positioned within the respective image element cells.
Abstract: In a preferred embodiment, a single motor drives both oil and refrigerant pumps in a refrigeration chiller, the motor and oil pump being disposed in the chiller's oil supply tank and the refrigerant pump being disposed exterior thereof. The refrigerant pump pumps liquid refrigerant to the chiller's compressor section so as to cool the motor by which the compressor is driven while the oil pump pumps oil to chiller locations that require lubrication when the chiller is in operation. A uniquely designed impeller permits low pressure liquid refrigerant in its liquid state to be reliably pumped to a location of use, without significant flashing, from a source location which is at a height only a short distance above the pump inlet. A stand alone refrigerant pump embodiment is also described.
Abstract: In a preferred embodiment, a single motor drives both oil and refrigerant pumps in a refrigeration chiller, the motor and oil pump being disposed in the chiller's oil supply tank and the refrigerant pump being disposed exterior thereof. The refrigerant pump pumps liquid refrigerant to the chiller's compressor section so as to cool the motor by which the compressor is driven while the oil pump pumps oil to chiller locations that require lubrication when the chiller is in operation. A uniquely designed impeller permits low pressure liquid refrigerant in its liquid state to be reliably pumped to a location of use, without significant flashing, from a source location which is at a height only a short distance above the pump inlet. A stand alone refrigerant pump embodiment is also described.
Abstract: An apparatus for generating a spark, particularly for igniting the gas in a gas appliance. The apparatus includes a spark generator adjacent to a combustible gas burner. The spark generator consists of at least two spark electrodes connected to a high voltage transformer. The transformer and electrodes, preferably sealed or supported in an epoxy or ceramic shell, form one easily replaceable unit. A remote circuit is operatively associated with the high voltage transformer for igniting a spark. The transformer and electrodes are located at a distance from the spark initiating circuitry and other circuitry, which in combination with the epoxy or ceramic shell provides enhanced EMI protection for sensitive remote circuitry. The ignition system may also includes a flame sensing mechanism which detects when the burner is lit.
Abstract: A composition having at least one herbal compound and at least one homeopathic drug is useful for treating symptoms associated with menopause. Methods of preparing the composition and methods of treating, alleviating or otherwise mitigating the menopausal symptoms are also described.
Abstract: A stabilized wafer for monitoring and calibrating oxide charge test equipment. The stabilized wafer comprises; a silicon wafer, a SiO2 layer of at least 100 angstroms upon the silicon wafer, and a phosphosilicate glass layer containing phosphorus formed in the SiO2 layer for providing the stabilized wafer by stabilizing an SiO2 interface and containing oxygen ions. The stabilized wafer is used for monitoring and calibrating oxide charge test equipment.
Abstract: A tube and shell evaporator operable at near freezing includes a temperature sensor that senses the temperature of chilled water discharging from one or just a few of the very coldest tubes, whereby the sensed temperature is less than the average leaving chiller water temperature (LCWT). The result provides an exceptionally low LCWT, which can be especially desirable in district cooling systems where the chilled water is usually piped a great distance.
Type:
Grant
Filed:
January 21, 2000
Date of Patent:
June 12, 2001
Assignee:
American Standard International Inc.
Inventors:
Joel S. Duga, Steven J. Pitts, John H. Roberts